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Kernel segfault when running grep -r / #101

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nickgarvey opened this issue Jan 1, 2023 · 4 comments
Closed

Kernel segfault when running grep -r / #101

nickgarvey opened this issue Jan 1, 2023 · 4 comments

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@nickgarvey
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Here's the output from dmesg

I ran this command to cause it: sudo grep -lre 'asahi-linux' /

[Sat Dec 31 22:07:04 2022] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[Sat Dec 31 22:07:04 2022] Mem abort info:
[Sat Dec 31 22:07:04 2022]   ESR = 0x0000000086000004
[Sat Dec 31 22:07:04 2022]   EC = 0x21: IABT (current EL), IL = 32 bits
[Sat Dec 31 22:07:04 2022]   SET = 0, FnV = 0
[Sat Dec 31 22:07:04 2022]   EA = 0, S1PTW = 0
[Sat Dec 31 22:07:04 2022]   FSC = 0x04: level 0 translation fault
[Sat Dec 31 22:07:04 2022] user pgtable: 16k pages, 48-bit VAs, pgdp=00000008111da130
[Sat Dec 31 22:07:04 2022] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
[Sat Dec 31 22:07:04 2022] Internal error: Oops: 0000000086000004 [#2] PREEMPT SMP
[Sat Dec 31 22:07:04 2022] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device rfcomm rpcsec_gss_krb5 joydev usbhid bnep des_generic libdes md4 nls_iso8859_1 hci_bcm4377 bluetooth tg3 xhci_pci ptp xhci_hcd brcmfmac brcmutil ecdh_generic ecc macsmc_hid apple_piodma appledrm macsmc_power snd_soc_macaudio macsmc_reboot cfg80211 snd_soc_cs42l83_i2c snd_soc_cs42l42 rfkill asahi apple_dcp snd_soc_tas2770 snd_soc_apple_mca drm_dma_helper apple_admac clk_apple_nco apple_soc_cpufreq crypto_user fuse nvmem_spmi_mfd rtc_macsmc gpio_macsmc tps6598x simple_mfd_spmi regmap_spmi pcie_apple pci_host_common phy_apple_atc typec dwc3 udc_core macsmc_rtkit macsmc mfd_core nvmem_apple_efuses spmi_apple_controller pinctrl_apple_gpio i2c_apple apple_dart nvme_apple apple_sart apple_rtkit apple_mailbox
[Sat Dec 31 22:07:04 2022] CPU: 7 PID: 1815 Comm: grep Tainted: G S    D            6.1.0-asahi-2-2-edge-ARCH #2
[Sat Dec 31 22:07:04 2022] Hardware name: Apple Mac mini (M1, 2020) (DT)
[Sat Dec 31 22:07:04 2022] pstate: 00400009 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[Sat Dec 31 22:07:04 2022] pc : 0x0
[Sat Dec 31 22:07:04 2022] lr : psci_debugfs_read+0x20/0x60
[Sat Dec 31 22:07:04 2022] sp : ffff80000a19bbd0
[Sat Dec 31 22:07:04 2022] x29: ffff80000a19bbd0 x28: ffff000011c4eae0 x27: 0000000000400cc0
[Sat Dec 31 22:07:04 2022] x26: 000000007fffc000 x25: ffff000011c4ead0 x24: 0000000000000000
[Sat Dec 31 22:07:04 2022] x23: ffff80000a19bca0 x22: ffff80000a19bcc8 x21: 0000000000000001
[Sat Dec 31 22:07:04 2022] x20: ffff000011c4eaa8 x19: ffff000011c4eaa8 x18: 0000000000000000
[Sat Dec 31 22:07:04 2022] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[Sat Dec 31 22:07:04 2022] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[Sat Dec 31 22:07:04 2022] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
[Sat Dec 31 22:07:04 2022] x8 : 00000000ffffffff x7 : 0000000000400cc0 x6 : 0000000000000001
[Sat Dec 31 22:07:04 2022] x5 : ffff000011c3c000 x4 : 0000000000000000 x3 : 0000000000000000
[Sat Dec 31 22:07:04 2022] x2 : ffff8000088548e0 x1 : ffff800009469000 x0 : 0000000000000000
[Sat Dec 31 22:07:04 2022] Call trace:
[Sat Dec 31 22:07:04 2022]  0x0
[Sat Dec 31 22:07:04 2022]  seq_read_iter+0x164/0x450
[Sat Dec 31 22:07:04 2022]  seq_read+0x84/0xc0
[Sat Dec 31 22:07:04 2022]  full_proxy_read+0x60/0xbc
[Sat Dec 31 22:07:04 2022]  vfs_read+0xc0/0x2a0
[Sat Dec 31 22:07:04 2022]  ksys_read+0x6c/0x100
[Sat Dec 31 22:07:04 2022]  __arm64_sys_read+0x1c/0x30
[Sat Dec 31 22:07:04 2022]  invoke_syscall.constprop.0+0x50/0xf0
[Sat Dec 31 22:07:04 2022]  do_el0_svc+0xbc/0xe0
[Sat Dec 31 22:07:04 2022]  el0_svc+0x30/0x120
[Sat Dec 31 22:07:04 2022]  el0t_64_sync_handler+0xf4/0x120
[Sat Dec 31 22:07:04 2022]  el0t_64_sync+0x18c/0x190
[Sat Dec 31 22:07:04 2022] Code: bad PC value
[Sat Dec 31 22:07:04 2022] ---[ end trace 0000000000000000 ]---

This is easily reproducible, let me know if there is any other information I can provide.
@nickgarvey
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[ngarvey@macmini ~]$ sudo grep -lre 'asahi-linux' /
/home/ngarvey/.bash_history
/home/ngarvey/.viminfo
/home/ngarvey/.Xauthority
/home/ngarvey/.config/emailidentities
/home/ngarvey/.config/kdeconnect/config
/home/ngarvey/.local/share/akonadi/db_data/aria_log.00000001
/home/ngarvey/.local/share/akonadi/db_data/mysql/proxies_priv.MAD
/home/ngarvey/.local/share/akonadi/db_data/mysql/proxies_priv.MAI
/home/ngarvey/.local/share/akonadi/db_data/mysql/global_priv.MAI
/home/ngarvey/.local/share/akonadi/db_data/mysql/global_priv.MAD
grep: /sys/kernel/mm/hugepages/hugepages-32768kB/demote: Permission denied
grep: /sys/kernel/mm/hugepages/hugepages-1048576kB/demote: Permission denied
grep: /sys/kernel/security/apparmor/revision: Resource temporarily unavailable
grep: /sys/kernel/security/apparmor/.remove: Invalid argument
grep: /sys/kernel/security/apparmor/.replace: Invalid argument
grep: /sys/kernel/security/apparmor/.load: Invalid argument

@marcan
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marcan commented Jan 5, 2023

Looks like it crashes reading /sys/kernel/debug/psci. That's an upstream bug (this is not a PSCI platform so there is no PSCI support).

@marcan
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marcan commented Jan 5, 2023

Upstream patch: https://lore.kernel.org/lkml/20230105090834.630238-1-maz@kernel.org/

@marcan
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marcan commented Jun 15, 2023

Should be fixed these days.

@marcan marcan closed this as completed Jun 15, 2023
svenpeter42 pushed a commit that referenced this issue Apr 17, 2024
@gregkh
drm/amdgpu: Skip do PCI error slot reset during RAS recovery
395ca10 
[ Upstream commit 601429c ]

Why:
    The PCI error slot reset maybe triggered after inject ue to UMC multi times, this
    caused system hang.
    [  557.371857] amdgpu 0000:af:00.0: amdgpu: GPU reset succeeded, trying to resume
    [  557.373718] [drm] PCIE GART of 512M enabled.
    [  557.373722] [drm] PTB located at 0x0000031FED700000
    [  557.373788] [drm] VRAM is lost due to GPU reset!
    [  557.373789] [drm] PSP is resuming...
    [  557.547012] mlx5_core 0000:55:00.0: mlx5_pci_err_detected Device state = 1 pci_status: 0. Exit, result = 3, need reset
    [  557.547067] [drm] PCI error: detected callback, state(1)!!
    [  557.547069] [drm] No support for XGMI hive yet...
    [  557.548125] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Device state = 1 pci_status: 0. Enter
    [  557.607763] mlx5_core 0000:55:00.0: wait vital counter value 0x16b5b after 1 iterations
    [  557.607777] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Device state = 1 pci_status: 1. Exit, err = 0, result = 5, recovered
    [  557.610492] [drm] PCI error: slot reset callback!!
    ...
    [  560.689382] amdgpu 0000:3f:00.0: amdgpu: GPU reset(2) succeeded!
    [  560.689546] amdgpu 0000:5a:00.0: amdgpu: GPU reset(2) succeeded!
    [  560.689562] general protection fault, probably for non-canonical address 0x5f080b54534f611f: 0000 [#1] SMP NOPTI
    [  560.701008] CPU: 16 PID: 2361 Comm: kworker/u448:9 Tainted: G           OE     5.15.0-91-generic #101-Ubuntu
    [  560.712057] Hardware name: Microsoft C278A/C278A, BIOS C2789.5.BS.1C11.AG.1 11/08/2023
    [  560.720959] Workqueue: amdgpu-reset-hive amdgpu_ras_do_recovery [amdgpu]
    [  560.728887] RIP: 0010:amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu]
    [  560.736891] Code: ff 41 89 c6 e9 1b ff ff ff 44 0f b6 45 b0 e9 4f ff ff ff be 01 00 00 00 4c 89 e7 e8 76 c9 8b ff 44 0f b6 45 b0 e9 3c fd ff ff <48> 83 ba 18 02 00 00 00 0f 84 6a f8 ff ff 48 8d 7a 78 be 01 00 00
    [  560.757967] RSP: 0018:ffa0000032e53d80 EFLAGS: 00010202
    [  560.763848] RAX: ffa00000001dfd10 RBX: ffa0000000197090 RCX: ffa0000032e53db0
    [  560.771856] RDX: 5f080b54534f5f07 RSI: 0000000000000000 RDI: ff11000128100010
    [  560.779867] RBP: ffa0000032e53df0 R08: 0000000000000000 R09: ffffffffffe77f08
    [  560.787879] R10: 0000000000ffff0a R11: 0000000000000001 R12: 0000000000000000
    [  560.795889] R13: ffa0000032e53e00 R14: 0000000000000000 R15: 0000000000000000
    [  560.803889] FS:  0000000000000000(0000) GS:ff11007e7e800000(0000) knlGS:0000000000000000
    [  560.812973] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [  560.819422] CR2: 000055a04c118e68 CR3: 0000000007410005 CR4: 0000000000771ee0
    [  560.827433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [  560.835433] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
    [  560.843444] PKRU: 55555554
    [  560.846480] Call Trace:
    [  560.849225]  <TASK>
    [  560.851580]  ? show_trace_log_lvl+0x1d6/0x2ea
    [  560.856488]  ? show_trace_log_lvl+0x1d6/0x2ea
    [  560.861379]  ? amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu]
    [  560.867778]  ? show_regs.part.0+0x23/0x29
    [  560.872293]  ? __die_body.cold+0x8/0xd
    [  560.876502]  ? die_addr+0x3e/0x60
    [  560.880238]  ? exc_general_protection+0x1c5/0x410
    [  560.885532]  ? asm_exc_general_protection+0x27/0x30
    [  560.891025]  ? amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu]
    [  560.898323]  amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu]
    [  560.904520]  process_one_work+0x228/0x3d0
How:
    In RAS recovery, mode-1 reset is issued from RAS fatal error handling and expected
    all the nodes in a hive to be reset. no need to issue another mode-1 during this procedure.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@marcan @nickgarvey