Re: splat and freeze (2 instances)

From: Ilkka Prusi
Date: Sun Jul 12 2020 - 09:16:34 EST

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In reply to: Ilkka Prusi: "splat and freeze (2 instances)"
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Hi,

Here's a second splat with some additional tracing enabled.

Again this is gathered with phonecamera from frozen machine (dmesg -w) and full logs could not be saved.

Linux version 5.8.0-rc4+ (gcc (Debian 9.3.0-14) 9.3.0, GNU ld (GNU Binutils for Debian) 2.34.90.20200706) #95 SMP PREEMPT Sun Jul 12 12:29:16 EEST 2020

schedule_timeout+0x162/0x1a0
? trace_hardirqs_on+0x1c/0xf0
wait_for_completion+0x84/0xe0
virt_efi_query_variable_info+0x163/0x170
efi_query_variable_store+0x53/0x190
? _raw_spin_unlock_irqrestore+0x41/0x70
efivar_entry_set_safe+0xbf/0x210
efi_pstore_write+0x116/0x160/ [efi_pstore]
pstore_dump+0x10c/0x2e0
? kmsg_dump+0xd5/0x1c0
kmsg_dump+0x7b/0x1c0
oops_end+0x6f/0xc0
do_trap+0x8c/0x100
? do_futex+0x15e/0x560
do_error_trap+0x86/0x100
? do_futex+0x15e/0x560
? do_futex+0x15e/0x560
exc_invalid_op+0x4c/0x60
? do_futex+0x15e/0x560
asm_exc_invalid_op+0xf/0x20
RIP: 0010:do_futex+0x15e/0x560
Code: 85 c0 75 4b c7 84 24 a8 00 00 00 ff ff ff ff 41 b8 ff ff ff ff 4c 89 e9 44 89 f2 44 89 e6 48 89 ef e8 d6 e0 ff ff 48 98 e9 62 <ff> ff ff 83 f8 08 74 61 83 f8 09 75 18 44 8b 84 24 a8 00 00 00 eb
RSP: 0018:ffffc9000128fe08 EFLAGS: 00010282
RAX: 00000000ffffff92 RBX: 0000000000000000 RCX: 0000000000ae8b8c
RDX: ffff8887fe8dde80 RSI: ffff8887fa562720 RDI: ffffc9000128fd10
RBP: 0000000057b01018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000128fed0 R14: 0000000000000000 R15: 0000000000000000
? do_futex+0x15e/0x560
? lockdep_hardirqs_on_prepare+0xcf/0x170
? _raw_spin_unlock_irq+0x24/0x50
? trace_hardirqs_on+0x1c/0xf0
? _raw_spin_unlock_irq+0x35/0x50
? finish_task_switch+0x9e/0x280
? finish_task_switch+0x70/0x280
? __switch_to+0x361/0x480
? __switch_to_asm+0x36/0x70
__ia32_sys_futex_time32+0x13a/0x168
do_syscall_32_irqs_on+0x45/0x60
do_fast_syscall_32+0x6b/0xf0
entry_SYSCALL_compat_after_hwframe+0x45/0x4d
RIP: 0023:0xf7f06579
Code: Bad RIP value.
RSP: 002b:00000000be3faec0 EFLAGS: 00200282 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 0000000057b01018 RCX: 0000000000000089
RDX: 0000000000000000 RSI: 00000000be3faf90 RDI: 0000000000000000
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irq event stamp: 455331
hardirqs lastÂ enabled at (455331): [<ffffffff8102e03e>] do_error_trap+0xbe/0x100
hardirqs last disabled at (455330): [<ffffffff818b071d>] idtentry_enter_cond_rcu+0x1d/0x50
softirqs lastÂ enabled at (454086): [<ffffffff81c003aa>] __do_softirq+0x3aa/0x4af
softirqs last disabled at (454075): [<ffffffff81a00f82>] asm_call_on_stack+0x12/0x20
---[ end trace 87cc90f8d863ccc2 ]---

decode stacktrace:
$ cat ~/crashdata/580rc4/irq | ./scripts/decode_stacktrace.sh vmlinux . /lib/modules/5.8.0-rc4+/
schedule_timeout (/usr/src/linux/kernel/time/timer.c:1874)
? trace_hardirqs_on (/usr/src/linux/kernel/trace/trace_preemptirq.c:50 (discriminator 42))
wait_for_completion (/usr/src/linux/kernel/sched/completion.c:86 /usr/src/linux/kernel/sched/completion.c:106 /usr/src/linux/kernel/sched/completion.c:117 /usr/src/linux/kernel/sched/completion.c:138)
virt_efi_query_variable_info (/usr/src/linux/drivers/firmware/efi/runtime-wrappers.c:374 (discriminator 7))
efi_query_variable_store (/usr/src/linux/arch/x86/platform/efi/quirks.c:165 /usr/src/linux/arch/x86/platform/efi/quirks.c:151)
? _raw_spin_unlock_irqrestore (/usr/src/linux/./arch/x86/include/asm/preempt.h:102 /usr/src/linux/./include/linux/spinlock_api_smp.h:161 /usr/src/linux/kernel/locking/spinlock.c:191)
efivar_entry_set_safe (/usr/src/linux/drivers/firmware/efi/vars.c:784)
efi_pstore_write (/usr/src/linux/drivers/firmware/efi/efi-pstore.c:243) efi_pstore
pstore_dump (/usr/src/linux/fs/pstore/platform.c:456)
? kmsg_dump (/usr/src/linux/kernel/printk/printk.c:3221)
kmsg_dump (/usr/src/linux/kernel/printk/printk.c:3231 (discriminator 4))
oops_end (/usr/src/linux/arch/x86/kernel/dumpstack.c:348)
do_trap (/usr/src/linux/arch/x86/kernel/traps.c:119 /usr/src/linux/arch/x86/kernel/traps.c:157)
? do_futex (/usr/src/linux/kernel/futex.c:3811)
do_error_trap (/usr/src/linux/arch/x86/kernel/traps.c:83 /usr/src/linux/arch/x86/kernel/traps.c:178)
? do_futex (/usr/src/linux/kernel/futex.c:3811)
? do_futex (/usr/src/linux/kernel/futex.c:3811)
exc_invalid_op (/usr/src/linux/arch/x86/kernel/traps.c:262)
? do_futex (/usr/src/linux/kernel/futex.c:3811)
asm_exc_invalid_op (/usr/src/linux/./arch/x86/include/asm/idtentry.h:542)
RIP: 0010:do_futex (/usr/src/linux/kernel/futex.c:3811)
Code: 85 c0 75 4b c7 84 24 a8 00 00 00 ff ff ff ff 41 b8 ff ff ff ff 4c 89 e9 44 89 f2 44 89 e6 48 89 ef e8 d6 e0 ff ff 48 98 e9 62 <ff> ff ff 83 f8 08 74 61 83 f8 09 75 18 44 8b 84 24 a8 00 00 00 eb
All code
========
ÂÂ 0:ÂÂÂ 85 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ testÂÂ %eax,%eax
ÂÂ 2:ÂÂÂ 75 4bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x4f
ÂÂ 4:ÂÂÂ c7 84 24 a8 00 00 00 ÂÂÂ movlÂÂ $0xffffffff,0xa8(%rsp)
ÂÂ b:ÂÂÂ ff ff ff ff
ÂÂ f:ÂÂÂ 41 b8 ff ff ff ffÂÂÂ ÂÂÂ movÂÂÂ $0xffffffff,%r8d
Â 15:ÂÂÂ 4c 89 e9ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %r13,%rcx
Â 18:ÂÂÂ 44 89 f2ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %r14d,%edx
Â 1b:ÂÂÂ 44 89 e6ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %r12d,%esi
Â 1e:ÂÂÂ 48 89 efÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %rbp,%rdi
Â 21:ÂÂÂ e8 d6 e0 ff ffÂÂÂÂÂÂ ÂÂÂ callqÂ 0xffffffffffffe0fc
Â 26:ÂÂÂ 48 98ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ cltq
Â 28:*ÂÂÂ e9 62 ff ff ffÂÂÂÂÂÂ ÂÂÂ jmpqÂÂ 0xffffffffffffff8f ÂÂÂ <-- trapping instruction
Â 2d:ÂÂÂ 83 f8 08ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ cmpÂÂÂ $0x8,%eax
Â 30:ÂÂÂ 74 61ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jeÂÂÂÂ 0x93
Â 32:ÂÂÂ 83 f8 09ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ cmpÂÂÂ $0x9,%eax
Â 35:ÂÂÂ 75 18ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x4f
Â 37:ÂÂÂ 44 8b 84 24 a8 00 00 ÂÂÂ movÂÂÂ 0xa8(%rsp),%r8d
Â 3e:ÂÂÂ 00
Â 3f:ÂÂÂ ebÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0xeb

Code starting with the faulting instruction
===========================================
ÂÂ 0:ÂÂÂ ffÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ (bad)
ÂÂ 1:ÂÂÂ ffÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ (bad)
ÂÂ 2:ÂÂÂ ff 83 f8 08 74 61ÂÂÂ ÂÂÂ inclÂÂ 0x617408f8(%rbx)
ÂÂ 8:ÂÂÂ 83 f8 09ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ cmpÂÂÂ $0x9,%eax
ÂÂ b:ÂÂÂ 75 18ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x25
ÂÂ d:ÂÂÂ 44 8b 84 24 a8 00 00 ÂÂÂ movÂÂÂ 0xa8(%rsp),%r8d
Â 14:ÂÂÂ 00
Â 15:ÂÂÂ ebÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0xeb
RSP: 0018:ffffc9000128fe08 EFLAGS: 00010282
RAX: 00000000ffffff92 RBX: 0000000000000000 RCX: 0000000000ae8b8c
RDX: ffff8887fe8dde80 RSI: ffff8887fa562720 RDI: ffffc9000128fd10
RBP: 0000000057b01018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000128fed0 R14: 0000000000000000 R15: 0000000000000000
? do_futex (/usr/src/linux/kernel/futex.c:3811)
? lockdep_hardirqs_on_prepare (/usr/src/linux/kernel/locking/lockdep.c:3635 /usr/src/linux/kernel/locking/lockdep.c:3686)
? _raw_spin_unlock_irq (/usr/src/linux/./arch/x86/include/asm/paravirt.h:775 /usr/src/linux/./include/linux/spinlock_api_smp.h:168 /usr/src/linux/kernel/locking/spinlock.c:199)
? trace_hardirqs_on (/usr/src/linux/kernel/trace/trace_preemptirq.c:50 (discriminator 42))
? _raw_spin_unlock_irq (/usr/src/linux/./arch/x86/include/asm/preempt.h:102 /usr/src/linux/./include/linux/spinlock_api_smp.h:169 /usr/src/linux/kernel/locking/spinlock.c:199)
? finish_task_switch (/usr/src/linux/./arch/x86/include/asm/jump_label.h:25 /usr/src/linux/kernel/sched/core.c:3103 /usr/src/linux/kernel/sched/core.c:3296)
? finish_task_switch (/usr/src/linux/kernel/sched/core.c:3163 /usr/src/linux/kernel/sched/core.c:3291)
? __switch_to (/usr/src/linux/./arch/x86/include/asm/paravirt.h:283 /usr/src/linux/arch/x86/kernel/process_64.c:225 /usr/src/linux/arch/x86/kernel/process_64.c:274 /usr/src/linux/arch/x86/kernel/process_64.c:283 /usr/src/linux/arch/x86/kernel/process_64.c:482)
? __switch_to_asm (/usr/src/linux/arch/x86/entry/entry_64.S:252)
__ia32_sys_futex_time32 (/usr/src/linux/kernel/futex.c:4060 /usr/src/linux/kernel/futex.c:4034 /usr/src/linux/kernel/futex.c:4034)
do_syscall_32_irqs_on (/usr/src/linux/arch/x86/entry/common.c:428)
do_fast_syscall_32 (/usr/src/linux/arch/x86/entry/common.c:121 /usr/src/linux/arch/x86/entry/common.c:506)
entry_SYSCALL_compat_after_hwframe (/usr/src/linux/arch/x86/entry/entry_64_compat.S:256)
RIP: 0023:0xf7f06579
Code: Bad RIP value.
objdump: '/tmp/tmp.a5phocvdOL.o': No such file

Code starting with the faulting instruction
===========================================
RSP: 002b:00000000be3faec0 EFLAGS: 00200282 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 0000000057b01018 RCX: 0000000000000089
RDX: 0000000000000000 RSI: 00000000be3faf90 RDI: 0000000000000000
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irq event stamp: 455331
hardirqs last enabled at (455331): do_error_trap (/usr/src/linux/./arch/x86/include/asm/paravirt.h:775 /usr/src/linux/arch/x86/kernel/traps.c:78 /usr/src/linux/arch/x86/kernel/traps.c:176)
hardirqs last disabled at (455330): idtentry_enter_cond_rcu (/usr/src/linux/arch/x86/entry/common.c:652)
softirqs last enabled at (454086): __do_softirq (/usr/src/linux/./arch/x86/include/asm/preempt.h:26 /usr/src/linux/kernel/softirq.c:320)
softirqs last disabled at (454075): asm_call_on_stack (/usr/src/linux/arch/x86/entry/entry_64.S:719)
---[ end trace 87cc90f8d863ccc2 ]---

--

Â- Ilkka

Next message: Jonathan Cameron: "Re: [PATCH v8 6/6] IIO: Ingenic JZ47xx: Add touchscreen mode."
Previous message: madhuparnabhowmik10: "[PATCH 2/2] kvm: mmu: page_track: Fix RCU list API usage"
In reply to: Ilkka Prusi: "splat and freeze (2 instances)"
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