Failure loading h265 kernel module #144
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Kwiboo
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The SHA256 code we adopted from the OpenSSL project uses a rather peculiar way to take the address of the round constant table: it takes the address of the sha256_block_data_order() routine, and substracts a constant known quantity to arrive at the base of the table, which is emitted by the same assembler code right before the routine's entry point. However, recent versions of binutils have helpfully changed the behavior of references emitted via an ADR instruction when running in Thumb2 mode: it now takes the Thumb execution mode bit into account, which is bit 0 af the address. This means the produced table address also has bit 0 set, and so we end up with an address value pointing 1 byte past the start of the table, which results in crashes such as Unable to handle kernel paging request at virtual address bf825000 pgd = 42f44b11 [bf825000] *pgd=80000040206003, *pmd=5f1bd003, *pte=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP THUMB2 Modules linked in: sha256_arm(+) sha1_arm_ce sha1_arm ... CPU: 7 PID: 396 Comm: cryptomgr_test Not tainted 5.0.0-rc6+ rockchip-linux#144 Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 PC is at sha256_block_data_order+0xaaa/0xb30 [sha256_arm] LR is at __this_module+0x17fd/0xffffe800 [sha256_arm] pc : [<bf820bca>] lr : [<bf824ffd>] psr: 800b0033 sp : ebc8bbe8 ip : faaabe1c fp : 2fdd3433 r10: 4c5f1692 r9 : e43037df r8 : b04b0a5a r7 : c369d72 r6 : 39c3693e r5 : 7a013189 r4 : 1580d26b r3 : 8762a9b0 r2 : eea9c2cd r1 : 3e9ab536 r0 : 1dea4ae7 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment user Control: 70c5383d Table: 6b8467c0 DAC: dbadc0de Process cryptomgr_test (pid: 396, stack limit = 0x69e1fe23) Stack: (0xebc8bbe8 to 0xebc8c000) ... unwind: Unknown symbol address bf820bca unwind: Index not found bf820bca Code: 441a ea80 40f9 440a (f85e) 3b04 ---[ end trace e560cce92700ef8a ]--- Given that this affects older kernels as well, in case they are built with a recent toolchain, apply a minimal backportable fix, which is to emit another non-code label at the start of the routine, and reference that instead. (This is similar to the current upstream state of this file in OpenSSL) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Kwiboo
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Mar 10, 2019
The SHA512 code we adopted from the OpenSSL project uses a rather peculiar way to take the address of the round constant table: it takes the address of the sha256_block_data_order() routine, and substracts a constant known quantity to arrive at the base of the table, which is emitted by the same assembler code right before the routine's entry point. However, recent versions of binutils have helpfully changed the behavior of references emitted via an ADR instruction when running in Thumb2 mode: it now takes the Thumb execution mode bit into account, which is bit 0 af the address. This means the produced table address also has bit 0 set, and so we end up with an address value pointing 1 byte past the start of the table, which results in crashes such as Unable to handle kernel paging request at virtual address bf825000 pgd = 42f44b11 [bf825000] *pgd=80000040206003, *pmd=5f1bd003, *pte=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP THUMB2 Modules linked in: sha256_arm(+) sha1_arm_ce sha1_arm ... CPU: 7 PID: 396 Comm: cryptomgr_test Not tainted 5.0.0-rc6+ rockchip-linux#144 Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 PC is at sha256_block_data_order+0xaaa/0xb30 [sha256_arm] LR is at __this_module+0x17fd/0xffffe800 [sha256_arm] pc : [<bf820bca>] lr : [<bf824ffd>] psr: 800b0033 sp : ebc8bbe8 ip : faaabe1c fp : 2fdd3433 r10: 4c5f1692 r9 : e43037df r8 : b04b0a5a r7 : c369d72 r6 : 39c3693e r5 : 7a013189 r4 : 1580d26b r3 : 8762a9b0 r2 : eea9c2cd r1 : 3e9ab536 r0 : 1dea4ae7 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment user Control: 70c5383d Table: 6b8467c0 DAC: dbadc0de Process cryptomgr_test (pid: 396, stack limit = 0x69e1fe23) Stack: (0xebc8bbe8 to 0xebc8c000) ... unwind: Unknown symbol address bf820bca unwind: Index not found bf820bca Code: 441a ea80 40f9 440a (f85e) 3b04 ---[ end trace e560cce92700ef8a ]--- Given that this affects older kernels as well, in case they are built with a recent toolchain, apply a minimal backportable fix, which is to emit another non-code label at the start of the routine, and reference that instead. (This is similar to the current upstream state of this file in OpenSSL) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
rkchrome
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[ Upstream commit 69216a5 ] The SHA256 code we adopted from the OpenSSL project uses a rather peculiar way to take the address of the round constant table: it takes the address of the sha256_block_data_order() routine, and substracts a constant known quantity to arrive at the base of the table, which is emitted by the same assembler code right before the routine's entry point. However, recent versions of binutils have helpfully changed the behavior of references emitted via an ADR instruction when running in Thumb2 mode: it now takes the Thumb execution mode bit into account, which is bit 0 af the address. This means the produced table address also has bit 0 set, and so we end up with an address value pointing 1 byte past the start of the table, which results in crashes such as Unable to handle kernel paging request at virtual address bf825000 pgd = 42f44b11 [bf825000] *pgd=80000040206003, *pmd=5f1bd003, *pte=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP THUMB2 Modules linked in: sha256_arm(+) sha1_arm_ce sha1_arm ... CPU: 7 PID: 396 Comm: cryptomgr_test Not tainted 5.0.0-rc6+ #144 Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 PC is at sha256_block_data_order+0xaaa/0xb30 [sha256_arm] LR is at __this_module+0x17fd/0xffffe800 [sha256_arm] pc : [<bf820bca>] lr : [<bf824ffd>] psr: 800b0033 sp : ebc8bbe8 ip : faaabe1c fp : 2fdd3433 r10: 4c5f1692 r9 : e43037df r8 : b04b0a5a r7 : c369d72 r6 : 39c3693e r5 : 7a013189 r4 : 1580d26b r3 : 8762a9b0 r2 : eea9c2cd r1 : 3e9ab536 r0 : 1dea4ae7 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment user Control: 70c5383d Table: 6b8467c0 DAC: dbadc0de Process cryptomgr_test (pid: 396, stack limit = 0x69e1fe23) Stack: (0xebc8bbe8 to 0xebc8c000) ... unwind: Unknown symbol address bf820bca unwind: Index not found bf820bca Code: 441a ea80 40f9 440a (f85e) 3b04 ---[ end trace e560cce92700ef8a ]--- Given that this affects older kernels as well, in case they are built with a recent toolchain, apply a minimal backportable fix, which is to emit another non-code label at the start of the routine, and reference that instead. (This is similar to the current upstream state of this file in OpenSSL) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
rkchrome
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[ Upstream commit c643165 ] The SHA512 code we adopted from the OpenSSL project uses a rather peculiar way to take the address of the round constant table: it takes the address of the sha256_block_data_order() routine, and substracts a constant known quantity to arrive at the base of the table, which is emitted by the same assembler code right before the routine's entry point. However, recent versions of binutils have helpfully changed the behavior of references emitted via an ADR instruction when running in Thumb2 mode: it now takes the Thumb execution mode bit into account, which is bit 0 af the address. This means the produced table address also has bit 0 set, and so we end up with an address value pointing 1 byte past the start of the table, which results in crashes such as Unable to handle kernel paging request at virtual address bf825000 pgd = 42f44b11 [bf825000] *pgd=80000040206003, *pmd=5f1bd003, *pte=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP THUMB2 Modules linked in: sha256_arm(+) sha1_arm_ce sha1_arm ... CPU: 7 PID: 396 Comm: cryptomgr_test Not tainted 5.0.0-rc6+ #144 Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 PC is at sha256_block_data_order+0xaaa/0xb30 [sha256_arm] LR is at __this_module+0x17fd/0xffffe800 [sha256_arm] pc : [<bf820bca>] lr : [<bf824ffd>] psr: 800b0033 sp : ebc8bbe8 ip : faaabe1c fp : 2fdd3433 r10: 4c5f1692 r9 : e43037df r8 : b04b0a5a r7 : c369d72 r6 : 39c3693e r5 : 7a013189 r4 : 1580d26b r3 : 8762a9b0 r2 : eea9c2cd r1 : 3e9ab536 r0 : 1dea4ae7 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment user Control: 70c5383d Table: 6b8467c0 DAC: dbadc0de Process cryptomgr_test (pid: 396, stack limit = 0x69e1fe23) Stack: (0xebc8bbe8 to 0xebc8c000) ... unwind: Unknown symbol address bf820bca unwind: Index not found bf820bca Code: 441a ea80 40f9 440a (f85e) 3b04 ---[ end trace e560cce92700ef8a ]--- Given that this affects older kernels as well, in case they are built with a recent toolchain, apply a minimal backportable fix, which is to emit another non-code label at the start of the routine, and reference that instead. (This is similar to the current upstream state of this file in OpenSSL) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
0lvin
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syzkaller managed to trigger a use-after-free in tls like the following: BUG: KASAN: use-after-free in tls_push_record.constprop.15+0x6a2/0x810 [tls] Write of size 1 at addr ffff88037aa08000 by task a.out/2317 CPU: 3 PID: 2317 Comm: a.out Not tainted 4.17.0+ rockchip-linux#144 Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET47W (1.21 ) 11/28/2016 Call Trace: dump_stack+0x71/0xab print_address_description+0x6a/0x280 kasan_report+0x258/0x380 ? tls_push_record.constprop.15+0x6a2/0x810 [tls] tls_push_record.constprop.15+0x6a2/0x810 [tls] tls_sw_push_pending_record+0x2e/0x40 [tls] tls_sk_proto_close+0x3fe/0x710 [tls] ? tcp_check_oom+0x4c0/0x4c0 ? tls_write_space+0x260/0x260 [tls] ? kmem_cache_free+0x88/0x1f0 inet_release+0xd6/0x1b0 __sock_release+0xc0/0x240 sock_close+0x11/0x20 __fput+0x22d/0x660 task_work_run+0x114/0x1a0 do_exit+0x71a/0x2780 ? mm_update_next_owner+0x650/0x650 ? handle_mm_fault+0x2f5/0x5f0 ? __do_page_fault+0x44f/0xa50 ? mm_fault_error+0x2d0/0x2d0 do_group_exit+0xde/0x300 __x64_sys_exit_group+0x3a/0x50 do_syscall_64+0x9a/0x300 ? page_fault+0x8/0x30 entry_SYSCALL_64_after_hwframe+0x44/0xa9 This happened through fault injection where aead_req allocation in tls_do_encryption() eventually failed and we returned -ENOMEM from the function. Turns out that the use-after-free is triggered from tls_sw_sendmsg() in the second tls_push_record(). The error then triggers a jump to waiting for memory in sk_stream_wait_memory() resp. returning immediately in case of MSG_DONTWAIT. What follows is the trim_both_sgl(sk, orig_size), which drops elements from the sg list added via tls_sw_sendmsg(). Now the use-after-free gets triggered when the socket is being closed, where tls_sk_proto_close() callback is invoked. The tls_complete_pending_work() will figure that there's a pending closed tls record to be flushed and thus calls into the tls_push_pending_closed_record() from there. ctx->push_pending_record() is called from the latter, which is the tls_sw_push_pending_record() from sw path. This again calls into tls_push_record(). And here the tls_fill_prepend() will panic since the buffer address has been freed earlier via trim_both_sgl(). One way to fix it is to move the aead request allocation out of tls_do_encryption() early into tls_push_record(). This means we don't prep the tls header and advance state to the TLS_PENDING_CLOSED_RECORD before allocation which could potentially fail happened. That fixes the issue on my side. Fixes: 3c4d755 ("tls: kernel TLS support") Reported-by: syzbot+5c74af81c547738e1684@syzkaller.appspotmail.com Reported-by: syzbot+709f2810a6a05f11d4d3@syzkaller.appspotmail.com Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Dave Watson <davejwatson@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
friendlyarm
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Mar 1, 2022
commit 8b59b0a upstream. arm32 uses software to simulate the instruction replaced by kprobe. some instructions may be simulated by constructing assembly functions. therefore, before executing instruction simulation, it is necessary to construct assembly function execution environment in C language through binding registers. after kasan is enabled, the register binding relationship will be destroyed, resulting in instruction simulation errors and causing kernel panic. the kprobe emulate instruction function is distributed in three files: actions-common.c actions-arm.c actions-thumb.c, so disable KASAN when compiling these files. for example, use kprobe insert on cap_capable+20 after kasan enabled, the cap_capable assembly code is as follows: <cap_capable>: e92d47f0 push {r4, r5, r6, r7, r8, r9, sl, lr} e1a05000 mov r5, r0 e280006c add r0, r0, rockchip-linux#108 ; 0x6c e1a04001 mov r4, r1 e1a06002 mov r6, r2 e59fa090 ldr sl, [pc, rockchip-linux#144] ; ebfc7bf8 bl c03aa4b4 <__asan_load4> e595706c ldr r7, [r5, rockchip-linux#108] ; 0x6c e2859014 add r9, r5, rockchip-linux#20 ...... The emulate_ldr assembly code after enabling kasan is as follows: c06f1384 <emulate_ldr>: e92d47f0 push {r4, r5, r6, r7, r8, r9, sl, lr} e282803c add r8, r2, rockchip-linux#60 ; 0x3c e1a05000 mov r5, r0 e7e37855 ubfx r7, r5, rockchip-linux#16, #4 e1a00008 mov r0, r8 e1a09001 mov r9, r1 e1a04002 mov r4, r2 ebf35462 bl c03c6530 <__asan_load4> e357000f cmp r7, rockchip-linux#15 e7e36655 ubfx r6, r5, rockchip-linux#12, #4 e205a00f and sl, r5, rockchip-linux#15 0a000001 beq c06f13bc <emulate_ldr+0x38> e0840107 add r0, r4, r7, lsl #2 ebf3545c bl c03c6530 <__asan_load4> e084010a add r0, r4, sl, lsl #2 ebf3545a bl c03c6530 <__asan_load4> e2890010 add r0, r9, rockchip-linux#16 ebf35458 bl c03c6530 <__asan_load4> e5990010 ldr r0, [r9, rockchip-linux#16] e12fff30 blx r0 e356000f cm r6, rockchip-linux#15 1a000014 bne c06f1430 <emulate_ldr+0xac> e1a06000 mov r6, r0 e2840040 add r0, r4, rockchip-linux#64 ; 0x40 ...... when running in emulate_ldr to simulate the ldr instruction, panic occurred, and the log is as follows: Unable to handle kernel NULL pointer dereference at virtual address 00000090 pgd = ecb46400 [00000090] *pgd=2e0fa003, *pmd=00000000 Internal error: Oops: 206 [#1] SMP ARM PC is at cap_capable+0x14/0xb0 LR is at emulate_ldr+0x50/0xc0 psr: 600d0293 sp : ecd63af8 ip : 00000004 fp : c0a7c30c r10: 00000000 r9 : c30897f4 r8 : ecd63cd4 r7 : 0000000f r6 : 0000000a r5 : e59fa090 r4 : ecd63c98 r3 : c06ae294 r2 : 00000000 r1 : b7611300 r0 : bf4ec008 Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 32c5387d Table: 2d546400 DAC: 55555555 Process bash (pid: 1643, stack limit = 0xecd60190) (cap_capable) from (kprobe_handler+0x218/0x340) (kprobe_handler) from (kprobe_trap_handler+0x24/0x48) (kprobe_trap_handler) from (do_undefinstr+0x13c/0x364) (do_undefinstr) from (__und_svc_finish+0x0/0x30) (__und_svc_finish) from (cap_capable+0x18/0xb0) (cap_capable) from (cap_vm_enough_memory+0x38/0x48) (cap_vm_enough_memory) from (security_vm_enough_memory_mm+0x48/0x6c) (security_vm_enough_memory_mm) from (copy_process.constprop.5+0x16b4/0x25c8) (copy_process.constprop.5) from (_do_fork+0xe8/0x55c) (_do_fork) from (SyS_clone+0x1c/0x24) (SyS_clone) from (__sys_trace_return+0x0/0x10) Code: 0050a0e1 6c0080e2 0140a0e1 0260a0e1 (f801f0e7) Fixes: 35aa1df ("ARM kprobes: instruction single-stepping support") Fixes: 4210157 ("ARM: 9017/2: Enable KASan for ARM") Signed-off-by: huangshaobo <huangshaobo6@huawei.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
scpcom
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…ower_limit() [ Upstream commit 117dbed ] There is a global-out-of-bounds reported by KASAN: BUG: KASAN: global-out-of-bounds in _rtl8812ae_eq_n_byte.part.0+0x3d/0x84 [rtl8821ae] Read of size 1 at addr ffffffffa0773c43 by task NetworkManager/411 CPU: 6 PID: 411 Comm: NetworkManager Tainted: G D 6.1.0-rc8+ rockchip-linux#144 e15588508517267d37 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), Call Trace: <TASK> ... kasan_report+0xbb/0x1c0 _rtl8812ae_eq_n_byte.part.0+0x3d/0x84 [rtl8821ae] rtl8821ae_phy_bb_config.cold+0x346/0x641 [rtl8821ae] rtl8821ae_hw_init+0x1f5e/0x79b0 [rtl8821ae] ... </TASK> The root cause of the problem is that the comparison order of "prate_section" in _rtl8812ae_phy_set_txpower_limit() is wrong. The _rtl8812ae_eq_n_byte() is used to compare the first n bytes of the two strings from tail to head, which causes the problem. In the _rtl8812ae_phy_set_txpower_limit(), it was originally intended to meet this requirement by carefully designing the comparison order. For example, "pregulation" and "pbandwidth" are compared in order of length from small to large, first is 3 and last is 4. However, the comparison order of "prate_section" dose not obey such order requirement, therefore when "prate_section" is "HT", when comparing from tail to head, it will lead to access out of bounds in _rtl8812ae_eq_n_byte(). As mentioned above, the _rtl8812ae_eq_n_byte() has the same function as strcmp(), so just strcmp() is enough. Fix it by removing _rtl8812ae_eq_n_byte() and use strcmp() barely. Although it can be fixed by adjusting the comparison order of "prate_section", this may cause the value of "rate_section" to not be from 0 to 5. In addition, commit "21e4b0726dc6" not only moved driver from staging to regular tree, but also added setting txpower limit function during the driver config phase, so the problem was introduced by this commit. Fixes: 21e4b07 ("rtlwifi: rtl8821ae: Move driver from staging to regular tree") Signed-off-by: Li Zetao <lizetao1@huawei.com> Acked-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20221212025812.1541311-1-lizetao1@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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…ower_limit() [ Upstream commit 117dbed ] There is a global-out-of-bounds reported by KASAN: BUG: KASAN: global-out-of-bounds in _rtl8812ae_eq_n_byte.part.0+0x3d/0x84 [rtl8821ae] Read of size 1 at addr ffffffffa0773c43 by task NetworkManager/411 CPU: 6 PID: 411 Comm: NetworkManager Tainted: G D 6.1.0-rc8+ rockchip-linux#144 e15588508517267d37 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), Call Trace: <TASK> ... kasan_report+0xbb/0x1c0 _rtl8812ae_eq_n_byte.part.0+0x3d/0x84 [rtl8821ae] rtl8821ae_phy_bb_config.cold+0x346/0x641 [rtl8821ae] rtl8821ae_hw_init+0x1f5e/0x79b0 [rtl8821ae] ... </TASK> The root cause of the problem is that the comparison order of "prate_section" in _rtl8812ae_phy_set_txpower_limit() is wrong. The _rtl8812ae_eq_n_byte() is used to compare the first n bytes of the two strings from tail to head, which causes the problem. In the _rtl8812ae_phy_set_txpower_limit(), it was originally intended to meet this requirement by carefully designing the comparison order. For example, "pregulation" and "pbandwidth" are compared in order of length from small to large, first is 3 and last is 4. However, the comparison order of "prate_section" dose not obey such order requirement, therefore when "prate_section" is "HT", when comparing from tail to head, it will lead to access out of bounds in _rtl8812ae_eq_n_byte(). As mentioned above, the _rtl8812ae_eq_n_byte() has the same function as strcmp(), so just strcmp() is enough. Fix it by removing _rtl8812ae_eq_n_byte() and use strcmp() barely. Although it can be fixed by adjusting the comparison order of "prate_section", this may cause the value of "rate_section" to not be from 0 to 5. In addition, commit "21e4b0726dc6" not only moved driver from staging to regular tree, but also added setting txpower limit function during the driver config phase, so the problem was introduced by this commit. Fixes: 21e4b07 ("rtlwifi: rtl8821ae: Move driver from staging to regular tree") Signed-off-by: Li Zetao <lizetao1@huawei.com> Acked-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20221212025812.1541311-1-lizetao1@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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Hello,
I'm having issues working with the h265e driver, the kernel does not seem to find the h265e firmware module monet.bin referenced here, and this causes a crash when starting the hardware HEVC encoder:
Mind explaining where can I find the monet.bin firmware file?
Thanks.
Device: roc-rk3328-cc
Kernel: Linux firefly 4.4.114-00004-gdfc5669-dirty #32 SMP Thu May 24 19:38:23 HKT 2018 aarch64 GNU/Linux
(using the default debian build provided on the website)
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