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CFI violation in drivers/acpi/sysfs.c #1051

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nathanchance opened this issue Jun 12, 2020 · 3 comments
Closed

CFI violation in drivers/acpi/sysfs.c #1051

nathanchance opened this issue Jun 12, 2020 · 3 comments
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@nathanchance
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[BUG] linux A bug that should be fixed in the mainline kernel. [FEATURE] CFI Related to building the kernel with Clang Control Flow Integrity [FIXED][LINUX] 5.8 This bug was fixed in Linux 5.8

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@nathanchance
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This was reported to me by one of my WSL2 kernel users.

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   16.030397] ---[ end trace 7b1fa81dc897e418 ]---
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

I will be sending a patch shortly.
@nathanchance nathanchance added [BUG] linux A bug that should be fixed in the mainline kernel. [PATCH] Submitted A patch has been submitted for review [FEATURE] CFI Related to building the kernel with Clang Control Flow Integrity labels Jun 12, 2020
@nathanchance nathanchance self-assigned this Jun 12, 2020
@nathanchance
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Patch submitted: https://lore.kernel.org/lkml/20200612045149.1837-1-natechancellor@gmail.com/

nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 12, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
6a51f0b 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
fengguang pushed a commit to 0day-ci/linux that referenced this issue Jun 12, 2020
@nathanchance @intel-lab-lkp
ACPI: sysfs: Fix pm_profile_attr type
f63d173 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 13, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
2199df2 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 14, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
9d69407 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 16, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
405fa21 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 17, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
c313e4b 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 18, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
b5c5dcc 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 21, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
77141c8 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
nathanchance added a commit to nathanchance/WSL2-Linux-Kernel that referenced this issue Jun 22, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
1bfdfb9 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
fengguang pushed a commit to 0day-ci/linux that referenced this issue Jun 23, 2020
@nathanchance @rafaeljw
ACPI: sysfs: Fix pm_profile_attr type
e6d701d 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
@nathanchance
Copy link
Member Author

Accepted: https://git.kernel.org/next/linux-next/c/6e3178aa1dd50c2a402cc16cb4bc099d0dfbd64b

@nathanchance nathanchance added [PATCH] Accepted A submitted patch has been accepted upstream and removed [PATCH] Submitted A patch has been submitted for review labels Jun 24, 2020
hohoxu pushed a commit to hohoxu/n5kernel that referenced this issue Jun 27, 2020
@nathanchance @hohoxu
ACPI: sysfs: Fix pm_profile_attr type
a6a6b61 
When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
mrchapp pushed a commit to mrchapp/linux that referenced this issue Jun 30, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
ab636e2 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mrchapp pushed a commit to mrchapp/linux that referenced this issue Jun 30, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
21ef459 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mrchapp pushed a commit to mrchapp/linux that referenced this issue Jun 30, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
adc606e 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mrchapp pushed a commit to mrchapp/linux that referenced this issue Jun 30, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
24566af 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Whissi pushed a commit to Whissi/linux-stable that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
2aaf2d3 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Whissi pushed a commit to Whissi/linux-stable that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
2523f24 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kyvangka1610 pushed a commit to Kyvangka1610/android_kernel_xiaomi_ginkgo that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
f8902c3 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Whissi pushed a commit to Whissi/linux-stable that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
01b8089 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Whissi pushed a commit to Whissi/linux-stable that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
3c4f9a5 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Whissi pushed a commit to Whissi/linux-stable that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
5c566f7 
commit e6d701d upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Blacksuan19 pushed a commit to Blacksuan19/kernel_dark_ages_phoenix that referenced this issue Jul 1, 2020
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
0d68453 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
manteiga25 pushed a commit to manteiga25/rainbow-kernel that referenced this issue Jan 14, 2022
@nathanchance @manteiga25
ACPI: sysfs: Fix pm_profile_attr type
9d97129 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
krazey pushed a commit to krazey/android_kernel_motorola_exynos9610 that referenced this issue May 6, 2022
@nathanchance @krazey
ACPI: sysfs: Fix pm_profile_attr type
2a1c6ca 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
TenSeventy7 pushed a commit to FreshROMs/android_kernel_samsung_exynos9610_mint that referenced this issue May 8, 2022
@nathanchance @TenSeventy7
ACPI: sysfs: Fix pm_profile_attr type
6f03cdf 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: John Vincent <git@tensevntysevn.cf>
Signed-off-by: John Vincent <git@tenseventyseven.cf>
long266 pushed a commit to long266/android_kernel_samsung_a32 that referenced this issue May 24, 2022
@nathanchance @long266
ACPI: sysfs: Fix pm_profile_attr type
0763975 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
SonicBSV pushed a commit to SonicBSV/android_kernel_asus_sdm660 that referenced this issue Aug 23, 2022
@nathanchance @SonicBSV
ACPI: sysfs: Fix pm_profile_attr type
5863d40 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
BayerischeMotorenWerke pushed a commit to BayerischeMotorenWerke/kernel_xiaomi_tissot that referenced this issue Sep 10, 2022
@nathanchance @BayerischeMotorenWerke
ACPI: sysfs: Fix pm_profile_attr type
b47905d 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
bggRGjQaUbCoE pushed a commit to bggRGjQaUbCoE/android_kernel_samsung_sm8250-mohammad92 that referenced this issue Apr 5, 2023
@nathanchance @bggRGjQaUbCoE
ACPI: sysfs: Fix pm_profile_attr type
c7a4ceb 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rem01Gaming pushed a commit to Rem01Gaming/viviz_kernel_even that referenced this issue May 23, 2023
@nathanchance @Rem01Gaming
ACPI: sysfs: Fix pm_profile_attr type
8c37607 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rem01Gaming pushed a commit to Rem01Gaming/kernel_oplus_even that referenced this issue Jun 3, 2023
@nathanchance @Rem01Gaming
ACPI: sysfs: Fix pm_profile_attr type
e65ae63 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
GiovanYCringe pushed a commit to GiovanYCringe-Experiments/kernel_a50 that referenced this issue Jul 3, 2023
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
e73d089 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: John Vincent <git@tensevntysevn.cf>
Signed-off-by: John Vincent <git@tenseventyseven.cf>
mitsu00 pushed a commit to mitsu00/merlin-r-oss that referenced this issue Jul 10, 2023
@nathanchance @mitsu00
ACPI: sysfs: Fix pm_profile_attr type
8fed4b0 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ahnet-69 pushed a commit to ahnet-69/android_kernel_samsung_a32 that referenced this issue Jul 15, 2023
@nathanchance @ahnet-69
ACPI: sysfs: Fix pm_profile_attr type
bcd5d80 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
TQMatvey pushed a commit to TQMatvey/mcd_kernel_oneplus_sdm845 that referenced this issue Jul 16, 2023
@nathanchance @TQMatvey
ACPI: sysfs: Fix pm_profile_attr type
58bda9f 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ mcdachpappe#1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
JoysKo pushed a commit to JoysKo/HYBRID_CAF_kernel that referenced this issue Jul 17, 2023
@nathanchance @JoysKo
ACPI: sysfs: Fix pm_profile_attr type
fa8a99b 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
HoangLong-Lumi pushed a commit to HoangLong-Lumi/android_kernel_samsung_mt6768 that referenced this issue Aug 5, 2023
@nathanchance @HoangLong-Lumi
ACPI: sysfs: Fix pm_profile_attr type
622ab90 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
HoangLong-Lumi pushed a commit to HoangLong-Lumi/android_kernel_samsung_mt6768 that referenced this issue Aug 5, 2023
@nathanchance @HoangLong-Lumi
ACPI: sysfs: Fix pm_profile_attr type
e529828 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Shas45558 pushed a commit to Shas45558/shas-dream-oc-mt6768 that referenced this issue Dec 27, 2023
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
4d9c4da 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rrsetofamuris pushed a commit to rrsetofamuris/codespaces that referenced this issue Jan 9, 2024
@nathanchance @rrsetofamuris
ACPI: sysfs: Fix pm_profile_attr type
58e411e 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bakoubak pushed a commit to Bakoubak/old-android_kernel_lenovo_amar that referenced this issue Jan 23, 2024
@nathanchance @Bakoubak
ACPI: sysfs: Fix pm_profile_attr type
2b6a0f6 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kevios12 pushed a commit to kevios12/android_kernel_samsung_universal7885 that referenced this issue Feb 16, 2024
@nathanchance @kevios12
ACPI: sysfs: Fix pm_profile_attr type
2c90cb2 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
FlorinelulX pushed a commit to FlorinelulX/android_kernel_huawei_hi6250-8 that referenced this issue Feb 20, 2024
@nathanchance
ACPI: sysfs: Fix pm_profile_attr type
32a1758 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
LinuxGuy312 pushed a commit to LinuxGuy312/android_kernel_realme_RMX1805 that referenced this issue Mar 23, 2024
@nathanchance @LinuxGuy312
ACPI: sysfs: Fix pm_profile_attr type
4987afd 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
theshoqanebi pushed a commit to theshoqanebi/android_samsung_a12_kernel that referenced this issue Apr 1, 2024
@nathanchance @theshoqanebi
ACPI: sysfs: Fix pm_profile_attr type
83b630b 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
theshoqanebi pushed a commit to theshoqanebi/android_samsung_m12_kernel that referenced this issue Apr 4, 2024
@nathanchance @theshoqanebi
ACPI: sysfs: Fix pm_profile_attr type
5d50a6b 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AndroidHQ254 pushed a commit to A325F/kernel_samsung_a32-old that referenced this issue Apr 7, 2024
@nathanchance @AndroidHQ254
ACPI: sysfs: Fix pm_profile_attr type
e2f677d 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AndroidHQ254 pushed a commit to A325F/kernel_samsung_a32-old that referenced this issue Apr 7, 2024
@nathanchance @AndroidHQ254
ACPI: sysfs: Fix pm_profile_attr type
4fc40ab 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huawei-Dev pushed a commit to Huawei-Dev/android_kernel_huawei_hi3660 that referenced this issue Apr 12, 2024
@nathanchance @Huawei-Dev
ACPI: sysfs: Fix pm_profile_attr type
37276e6 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huawei-Dev pushed a commit to Huawei-Dev/android_kernel_huawei_hi3660 that referenced this issue Apr 12, 2024
@nathanchance @Huawei-Dev
ACPI: sysfs: Fix pm_profile_attr type
b01c624 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ExtremeXT pushed a commit to ExtremeXT/android_kernel_samsung_exynos990 that referenced this issue Apr 23, 2024
@nathanchance @ExtremeXT
ACPI: sysfs: Fix pm_profile_attr type
7c79c11 
commit e6d701dca9893990d999fd145e3e07223c002b06 upstream.

When running a kernel with Clang's Control Flow Integrity implemented,
there is a violation that happens when accessing
/sys/firmware/acpi/pm_profile:

$ cat /sys/firmware/acpi/pm_profile
0

$ dmesg
...
[   17.352564] ------------[ cut here ]------------
[   17.352568] CFI failure (target: acpi_show_profile+0x0/0x8):
[   17.352572] WARNING: CPU: 3 PID: 497 at kernel/cfi.c:29 __cfi_check_fail+0x33/0x40
[   17.352573] Modules linked in:
[   17.352575] CPU: 3 PID: 497 Comm: cat Tainted: G        W         5.7.0-microsoft-standard+ #1
[   17.352576] RIP: 0010:__cfi_check_fail+0x33/0x40
[   17.352577] Code: 48 c7 c7 50 b3 85 84 48 c7 c6 50 0a 4e 84 e8 a4 d8 60 00 85 c0 75 02 5b c3 48 c7 c7 dc 5e 49 84 48 89 de 31 c0 e8 7d 06 eb ff <0f> 0b 5b c3 00 00 cc cc 00 00 cc cc 00 85 f6 74 25 41 b9 ea ff ff
[   17.352577] RSP: 0018:ffffaa6dc3c53d30 EFLAGS: 00010246
[   17.352578] RAX: 331267e0c06cee00 RBX: ffffffff83d85890 RCX: ffffffff8483a6f8
[   17.352579] RDX: ffff9cceabbb37c0 RSI: 0000000000000082 RDI: ffffffff84bb9e1c
[   17.352579] RBP: ffffffff845b2bc8 R08: 0000000000000001 R09: ffff9cceabbba200
[   17.352579] R10: 000000000000019d R11: 0000000000000000 R12: ffff9cc947766f00
[   17.352580] R13: ffffffff83d6bd50 R14: ffff9ccc6fa80000 R15: ffffffff845bd328
[   17.352582] FS:  00007fdbc8d13580(0000) GS:ffff9cce91ac0000(0000) knlGS:0000000000000000
[   17.352582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.352583] CR2: 00007fdbc858e000 CR3: 00000005174d0000 CR4: 0000000000340ea0
[   17.352584] Call Trace:
[   17.352586]  ? rev_id_show+0x8/0x8
[   17.352587]  ? __cfi_check+0x45bac/0x4b640
[   17.352589]  ? kobj_attr_show+0x73/0x80
[   17.352590]  ? sysfs_kf_seq_show+0xc1/0x140
[   17.352592]  ? ext4_seq_options_show.cfi_jt+0x8/0x8
[   17.352593]  ? seq_read+0x180/0x600
[   17.352595]  ? sysfs_create_file_ns.cfi_jt+0x10/0x10
[   17.352596]  ? tlbflush_read_file+0x8/0x8
[   17.352597]  ? __vfs_read+0x6b/0x220
[   17.352598]  ? handle_mm_fault+0xa23/0x11b0
[   17.352599]  ? vfs_read+0xa2/0x130
[   17.352599]  ? ksys_read+0x6a/0xd0
[   17.352601]  ? __do_sys_getpgrp+0x8/0x8
[   17.352602]  ? do_syscall_64+0x72/0x120
[   17.352603]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   17.352604] ---[ end trace 7b1fa81dc897e419 ]---

When /sys/firmware/acpi/pm_profile is read, sysfs_kf_seq_show is called,
which in turn calls kobj_attr_show, which gets the ->show callback
member by calling container_of on attr (casting it to struct
kobj_attribute) then calls it.

There is a CFI violation because pm_profile_attr is of type
struct device_attribute but kobj_attr_show calls ->show expecting it
to be from struct kobj_attribute. CFI checking ensures that function
pointer types match when doing indirect calls. Fix pm_profile_attr to
be defined in terms of kobj_attribute so there is no violation or
mismatch.

Fixes: 362b646062b2 ("ACPI: Export FADT pm_profile integer value to userspace")
Link: ClangBuiltLinux/linux#1051
Reported-by: yuu ichii <byahu140@heisei.be>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[BUG] linux A bug that should be fixed in the mainline kernel. [FEATURE] CFI Related to building the kernel with Clang Control Flow Integrity [FIXED][LINUX] 5.8 This bug was fixed in Linux 5.8
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