splat and freeze (2 instances)

From: Ilkka Prusi
Date: Sat Jul 11 2020 - 00:55:24 EST

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Hi,

I have to splats followed by freezing, first one was saved in logs but second one is only what I could gather from screen of frozen machine. First one is 5.7.7 and second with 5.8.0-rc4+.

Logs from second one could not be saved but part of it could be captured with phonecamera (dmesg -w).

Computer:

- AMD Ryzen 7 2700, [AMD] 400 Series Chipset

- efi: EFI v2.60 by American Megatrends
- efi: ACPI 2.0=0xd13f2000 ACPI=0xd13f2000 SMBIOS=0xdb647000 SMBIOS 3.0=0xdb646000 ESRT=0xd7bdd918 MEMATTR=0xd7c3e018
- SMBIOS 3.1.1 present.
- DMI: System manufacturer System Product Name/TUF B450-PLUS GAMING, BIOS 2008 12/06/2019
- gcc (Debian 9.3.0-14) 9.3.0

First one:

Linux version 5.7.7 (gcc version 9.3.0 (Debian 9.3.0-14), GNU ld (GNU Binutils for Debian) 2.34) #2 SMP PREEMPT Fri Jul 3 10:16:05 EEST 2020

[16835.276319][ÂÂÂ C3] rcu: INFO: rcu_preempt self-detected stall on CPU
[16835.276331][ÂÂÂ C3] rcu:Â 3-....: (5250 ticks this GP) idle=526/1/0x4000000000000002 softirq=1880877/1880877 fqs=2299
[16835.276338][ÂÂÂ C3]ÂÂÂÂÂÂ (t=5250 jiffies g=3603393 q=18733)
[16835.276342][ÂÂÂ C3] NMI backtrace for cpu 3
[16835.276347][ÂÂÂ C3] CPU: 3 PID: 26434 Comm: CJobMgr::m_Work Tainted: GÂÂÂÂÂÂÂÂÂÂÂ EÂÂÂÂ 5.7.7 #2
[16835.276351][ÂÂÂ C3] Hardware name: System manufacturer System Product Name/TUF B450-PLUS GAMING, BIOS 2008 12/06/2019
[16835.276353][ÂÂÂ C3] Call Trace:
[16835.276358][ÂÂÂ C3]Â <IRQ>
[16835.276367][ÂÂÂ C3]Â dump_stack+0x66/0x90
[16835.276373][ÂÂÂ C3]Â nmi_cpu_backtrace.cold+0x14/0x52
[16835.276378][ÂÂÂ C3]Â ? lapic_can_unplug_cpu.cold+0x40/0x40
[16835.276382][ÂÂÂ C3]Â nmi_trigger_cpumask_backtrace+0xfc/0x121
[16835.276388][ÂÂÂ C3]Â rcu_dump_cpu_stacks+0xa1/0xcf
[16835.276393][ÂÂÂ C3]Â rcu_sched_clock_irq.cold+0xab/0x16d
[16835.276397][ÂÂÂ C3]Â update_process_times+0x24/0x50
[16835.276402][ÂÂÂ C3]Â tick_sched_timer+0x5a/0x170
[16835.276405][ÂÂÂ C3]Â ? tick_switch_to_oneshot.cold+0x6f/0x6f
[16835.276409][ÂÂÂ C3]Â __hrtimer_run_queues+0xf6/0x2c0
[16835.276414][ÂÂÂ C3]Â hrtimer_interrupt+0x118/0x240
[16835.276421][ÂÂÂ C3]Â smp_apic_timer_interrupt+0x88/0x190
[16835.276425][ÂÂÂ C3]Â apic_timer_interrupt+0xf/0x20
[16835.276428][ÂÂÂ C3]Â </IRQ>
[16835.276433][ÂÂÂ C3] RIP: 0010:native_queued_spin_lock_slowpath+0x6a/0x200
[16835.276438][ÂÂÂ C3] Code: 73 f0 0f ba 2b 08 0f 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 03 30 e4 09 d0 a9 00 01 ff ff 75 4d 85 c0 74 0e 8b 03 84 c0 74 08 f3 90 <8b> 03 84 c0 75 f8 b8 01 00 00 00 66 89 03 5b 5d 41 5c 41 5d c3 8b
[16835.276441][ÂÂÂ C3] RSP: 0018:ffffc90003d57cb0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
[16835.276445][ÂÂÂ C3] RAX: 0000000000000105 RBX: ffff8887fabf6200 RCX: 0000000000000000
[16835.276447][ÂÂÂ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8887fabf6200
[16835.276449][ÂÂÂ C3] RBP: ffffc90003d57d08 R08: 0000000000000000 R09: 0000000000000000
[16835.276451][ÂÂÂ C3] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[16835.276454][ÂÂÂ C3] R13: 0000000000000000 R14: ffff8887fabf6200 R15: 00000000db007e1c
[16835.276461][ÂÂÂ C3]Â _raw_spin_lock+0x2c/0x30
[16835.276465][ÂÂÂ C3]Â futex_wait+0x102/0x220
[16835.276470][ÂÂÂ C3]Â ? hrtimer_init_sleeper+0xa0/0xa0
[16835.276476][ÂÂÂ C3]Â do_futex+0x15a/0x8b0
[16835.276481][ÂÂÂ C3]Â __ia32_sys_futex_time32+0x13a/0x168
[16835.276488][ÂÂÂ C3]Â do_fast_syscall_32+0x94/0x280
[16835.276492][ÂÂÂ C3] entry_SYSCALL_compat_after_hwframe+0x45/0x4d

And decode_stacktrace.sh gives me following:

$ cat ~/crashdata/577/rcustall | ./scripts/decode_stacktrace.sh vmlinux . /lib/modules/5.7.7/
[16835.276319][ÂÂÂ C3] rcu: INFO: rcu_preempt self-detected stall on CPU
[16835.276331][ÂÂÂ C3] rcu:Â 3-....: (5250 ticks this GP) idle=526/1/0x4000000000000002 softirq=1880877/1880877 fqs=2299
[16835.276338][ÂÂÂ C3]ÂÂÂÂÂÂ (t=5250 jiffies g=3603393 q=18733)
[16835.276342][ÂÂÂ C3] NMI backtrace for cpu 3
[16835.276347][ÂÂÂ C3] CPU: 3 PID: 26434 Comm: CJobMgr::m_Work Tainted: GÂÂÂÂÂÂÂÂÂÂÂ EÂÂÂÂ 5.7.7 #2
[16835.276351][ÂÂÂ C3] Hardware name: System manufacturer System Product Name/TUF B450-PLUS GAMING, BIOS 2008 12/06/2019
[16835.276353][ÂÂÂ C3] Call Trace:
[16835.276358][ÂÂÂ C3]Â <IRQ>
[16835.276367][ C3] dump_stack (/usr/src/linux-5.7.7/lib/dump_stack.c:120)
[16835.276373][ C3] nmi_cpu_backtrace.cold (/usr/src/linux-5.7.7/./include/linux/cpumask.h:350 /usr/src/linux-5.7.7/lib/nmi_backtrace.c:103)
[16835.276378][ C3] ? lapic_can_unplug_cpu.cold (/usr/src/linux-5.7.7/arch/x86/kernel/apic/hw_nmi.c:32)
[16835.276382][ C3] nmi_trigger_cpumask_backtrace (/usr/src/linux-5.7.7/lib/nmi_backtrace.c:62)
[16835.276388][ C3] rcu_dump_cpu_stacks (/usr/src/linux-5.7.7/kernel/rcu/tree_stall.h:252 (discriminator 5))
[16835.276393][ C3] rcu_sched_clock_irq.cold (/usr/src/linux-5.7.7/kernel/rcu/tree_stall.h:477 /usr/src/linux-5.7.7/kernel/rcu/tree_stall.h:549 /usr/src/linux-5.7.7/kernel/rcu/tree.c:3225 /usr/src/linux-5.7.7/kernel/rcu/tree.c:2296)
[16835.276397][ C3] update_process_times (/usr/src/linux-5.7.7/./arch/x86/include/asm/preempt.h:26 /usr/src/linux-5.7.7/kernel/time/timer.c:1729)
[16835.276402][ C3] tick_sched_timer (/usr/src/linux-5.7.7/kernel/time/tick-sched.c:177 /usr/src/linux-5.7.7/kernel/time/tick-sched.c:1320)
[16835.276405][ C3] ? tick_switch_to_oneshot.cold (/usr/src/linux-5.7.7/kernel/time/tick-sched.c:1307)
[16835.276409][ C3] __hrtimer_run_queues (/usr/src/linux-5.7.7/kernel/time/hrtimer.c:1520 /usr/src/linux-5.7.7/kernel/time/hrtimer.c:1584)
[16835.276414][ C3] hrtimer_interrupt (/usr/src/linux-5.7.7/kernel/time/hrtimer.c:1649)
[16835.276421][ C3] smp_apic_timer_interrupt (/usr/src/linux-5.7.7/./arch/x86/include/asm/jump_label.h:25 /usr/src/linux-5.7.7/./include/linux/jump_label.h:200 /usr/src/linux-5.7.7/./arch/x86/include/asm/trace/irq_vectors.h:56 /usr/src/linux-5.7.7/arch/x86/kernel/apic/apic.c:1139)
[16835.276425][ C3] apic_timer_interrupt (/usr/src/linux-5.7.7/arch/x86/entry/entry_64.S:829)
[16835.276428][ÂÂÂ C3]Â </IRQ>
[16835.276433][ C3] RIP: 0010:native_queued_spin_lock_slowpath (/usr/src/linux-5.7.7/./include/linux/compiler.h:199 /usr/src/linux-5.7.7/kernel/locking/qspinlock.c:382 /usr/src/linux-5.7.7/kernel/locking/qspinlock.c:315)
[16835.276438][ C3] Code: 73 f0 0f ba 2b 08 0f 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 03 30 e4 09 d0 a9 00 01 ff ff 75 4d 85 c0 74 0e 8b 03 84 c0 74 08 f3 90 <8b> 03 84 c0 75 f8 b8 01 00 00 00 66 89 03 5b 5d 41 5c 41 5d c3 8b
All code
========
ÂÂ 0:ÂÂÂ 73 f0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jaeÂÂÂ 0xfffffffffffffff2
ÂÂ 2:ÂÂÂ 0f ba 2b 08ÂÂÂÂÂÂÂÂÂ ÂÂÂ btslÂÂ $0x8,(%rbx)
ÂÂ 6:ÂÂÂ 0f 92 c0ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ setbÂÂ %al
ÂÂ 9:ÂÂÂ 0f b6 c0ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movzbl %al,%eax
ÂÂ c:ÂÂÂ c1 e0 08ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ shlÂÂÂ $0x8,%eax
ÂÂ f:ÂÂÂ 89 c2ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %eax,%edx
Â 11:ÂÂÂ 8b 03ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ (%rbx),%eax
Â 13:ÂÂÂ 30 e4ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ xorÂÂÂ %ah,%ah
Â 15:ÂÂÂ 09 d0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ orÂÂÂÂ %edx,%eax
Â 17:ÂÂÂ a9 00 01 ff ffÂÂÂÂÂÂ ÂÂÂ testÂÂ $0xffff0100,%eax
Â 1c:ÂÂÂ 75 4dÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x6b
Â 1e:ÂÂÂ 85 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ testÂÂ %eax,%eax
Â 20:ÂÂÂ 74 0eÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jeÂÂÂÂ 0x30
Â 22:ÂÂÂ 8b 03ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ (%rbx),%eax
Â 24:ÂÂÂ 84 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ testÂÂ %al,%al
Â 26:ÂÂÂ 74 08ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jeÂÂÂÂ 0x30
Â 28:ÂÂÂ f3 90ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ pause
Â 2a:*ÂÂÂ 8b 03ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ (%rbx),%eax <-- trapping instruction
Â 2c:ÂÂÂ 84 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ testÂÂ %al,%al
Â 2e:ÂÂÂ 75 f8ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x28
Â 30:ÂÂÂ b8 01 00 00 00ÂÂÂÂÂÂ ÂÂÂ movÂÂÂ $0x1,%eax
Â 35:ÂÂÂ 66 89 03ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %ax,(%rbx)
Â 38:ÂÂÂ 5bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %rbx
Â 39:ÂÂÂ 5dÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %rbp
Â 3a:ÂÂÂ 41 5cÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %r12
Â 3c:ÂÂÂ 41 5dÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %r13
Â 3e:ÂÂÂ c3ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ retq
Â 3f:ÂÂÂ 8bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0x8b

Code starting with the faulting instruction
===========================================
ÂÂ 0:ÂÂÂ 8b 03ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ (%rbx),%eax
ÂÂ 2:ÂÂÂ 84 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ testÂÂ %al,%al
ÂÂ 4:ÂÂÂ 75 f8ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0xfffffffffffffffe
ÂÂ 6:ÂÂÂ b8 01 00 00 00ÂÂÂÂÂÂ ÂÂÂ movÂÂÂ $0x1,%eax
ÂÂ b:ÂÂÂ 66 89 03ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %ax,(%rbx)
ÂÂ e:ÂÂÂ 5bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %rbx
ÂÂ f:ÂÂÂ 5dÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %rbp
Â 10:ÂÂÂ 41 5cÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %r12
Â 12:ÂÂÂ 41 5dÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ popÂÂÂ %r13
Â 14:ÂÂÂ c3ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ retq
Â 15:ÂÂÂ 8bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0x8b
[16835.276441][ÂÂÂ C3] RSP: 0018:ffffc90003d57cb0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
[16835.276445][ÂÂÂ C3] RAX: 0000000000000105 RBX: ffff8887fabf6200 RCX: 0000000000000000
[16835.276447][ÂÂÂ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8887fabf6200
[16835.276449][ÂÂÂ C3] RBP: ffffc90003d57d08 R08: 0000000000000000 R09: 0000000000000000
[16835.276451][ÂÂÂ C3] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[16835.276454][ÂÂÂ C3] R13: 0000000000000000 R14: ffff8887fabf6200 R15: 00000000db007e1c
[16835.276461][ C3] _raw_spin_lock (/usr/src/linux-5.7.7/./arch/x86/include/asm/paravirt.h:645 /usr/src/linux-5.7.7/./arch/x86/include/asm/qspinlock.h:50 /usr/src/linux-5.7.7/./include/asm-generic/qspinlock.h:81 /usr/src/linux-5.7.7/./include/linux/spinlock.h:182 /usr/src/linux-5.7.7/./include/linux/spinlock_api_smp.h:143 /usr/src/linux-5.7.7/kernel/locking/spinlock.c:151)
[16835.276465][ C3] futex_wait (/usr/src/linux-5.7.7/kernel/futex.c:2334 /usr/src/linux-5.7.7/kernel/futex.c:2742)
[16835.276470][ C3] ? hrtimer_init_sleeper (/usr/src/linux-5.7.7/kernel/time/hrtimer.c:1767)
[16835.276476][ C3] do_futex (/usr/src/linux-5.7.7/kernel/futex.c:3808)
[16835.276481][ C3] __ia32_sys_futex_time32 (/usr/src/linux-5.7.7/kernel/futex.c:4057 /usr/src/linux-5.7.7/kernel/futex.c:4031 /usr/src/linux-5.7.7/kernel/futex.c:4031)
[16835.276488][ C3] do_fast_syscall_32 (/usr/src/linux-5.7.7/arch/x86/entry/common.c:337 /usr/src/linux-5.7.7/arch/x86/entry/common.c:396)
[16835.276492][ C3] entry_SYSCALL_compat_after_hwframe (/usr/src/linux-5.7.7/arch/x86/entry/entry_64_compat.S:259)

Second one with kernel version: Linux version 5.8.0-rc4+ (gcc (Debian 9.3.0-14) 9.3.0, GNU ld (GNU Binutils for Debian) 2.34) #87 SMP PREEMPT Fri Jul 10 11:38:32 EEST 2020

I could not save logs from this instance so captured with phonecamera: I had dmesg -w in one terminal but window was too small to fit it entirely:

? _raw_spin_unlock_irqrestore+0x02/0x40

? try_to_wake_up+0x7a/0x460

wait_for_completion+0x84/0xe0

virt_efi_query_variable+0x141/0x150

efi_query_variable_store+0x53/0x190

? preempt_count_add+0x68/0xa0

? _raw_spin_lock_irqsave+0x26/0x50

efivar_entry_set_safe+0xbf/0x210

efi_pstore_write+0x116/0x160 [efi_pstore]

pstore_dump+0x10c/0x2e0

? wake_up_klogd.part.0+0x4f/0x70

kmsg_dump+0xb8/0xe0

oops_end+0x6f/0xc0

exc_general_protection+0x18f/0x2e0

asm_exc_general_protection+0x1b/0x20

RIP: 0010:do_syscall_64+0x34/0xb0

Code: 00 65 48 8b 04 25 c0 7b 01 00 48 8b 00 a9 c1 01 00 10 75 40 48 81 ff b7 01 00 00 77 4b 48 81 ff b8 01 00 48 19 c0 48 21 c7 <48> 8b 04 fd a0 02 c0 81 48 89 ef e8 4c 94 23 00 48 89 45 50 48 89

RSP: 0018:ffffc90003a1ff48 EFLAGS: 00010292
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 00000000018dafa4
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffc90003a1fd20
RBP: ffffc90003a1ff58 R08: 0000000000000000 R09: ffff8887f7b13c00
R10: 0000000000000057 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Â? do_syscall_64+0x34/0xb0
Âentry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7feedffe590a
Code: Bad RIP value.
RSP: 002b:00007feecee06b60 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000003245 RCX: 00007feedffe590a
RDX: 0000000000000000 RSI: 0000000000000089 RDI: 00007feedf8490e4
RBP: 00007feedf8490b8 R08: 0000000000000000 R09: 00000000ffffffff
R10: 00007feecee06c40 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feedf849088 R14: 00007feedf8490e4 R15: 00007feecee06ba0
----[ end trace 91dfe9f4af058936 ]---

This gives me:

$ cat ~/crashdata/580rc4/eficrash | ./scripts/decode_stacktrace.sh vmlinux . /lib/modules/5.8.0-rc4+/
? _raw_spin_unlock_irqrestore (/usr/src/linux/kernel/locking/spinlock.c:190)

? try_to_wake_up (/usr/src/linux/./arch/x86/include/asm/preempt.h:102 /usr/src/linux/kernel/sched/core.c:2669)

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 (??:?)

efi_query_variable_store (/usr/src/linux/arch/x86/platform/efi/quirks.c:165 /usr/src/linux/arch/x86/platform/efi/quirks.c:151)

? preempt_count_add (/usr/src/linux/./include/linux/ftrace.h:821 /usr/src/linux/kernel/sched/core.c:3851 /usr/src/linux/kernel/sched/core.c:3848 /usr/src/linux/kernel/sched/core.c:3876)

? _raw_spin_lock_irqsave (/usr/src/linux/./arch/x86/include/asm/atomic.h:204 /usr/src/linux/./include/asm-generic/atomic-instrumented.h:707 /usr/src/linux/./include/asm-generic/qspinlock.h:78 /usr/src/linux/./include/linux/spinlock.h:194 /usr/src/linux/./include/linux/spinlock_api_smp.h:119 /usr/src/linux/kernel/locking/spinlock.c:159)

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:266 (discriminator 6)) efi_pstore

pstore_dump (/usr/src/linux/fs/pstore/platform.c:456)

? wake_up_klogd.part.0 (/usr/src/linux/./arch/x86/include/asm/preempt.h:102 /usr/src/linux/kernel/printk/printk.c:3039)

kmsg_dump (/usr/src/linux/kernel/printk/printk.c:3231)

oops_end (/usr/src/linux/arch/x86/kernel/dumpstack.c:348)

exc_general_protection (/usr/src/linux/arch/x86/kernel/traps.c:83 /usr/src/linux/arch/x86/kernel/traps.c:596 /usr/src/linux/arch/x86/kernel/traps.c:523)

asm_exc_general_protection (/usr/src/linux/./arch/x86/include/asm/idtentry.h:538)

RIP: 0010:do_syscall_64 (/usr/src/linux/arch/x86/entry/common.c:384)

Code: 00 65 48 8b 04 25 c0 7b 01 00 48 8b 00 a9 c1 01 00 10 75 40 48 81 ff b7 01 00 00 77 4b 48 81 ff b8 01 00 48 19 c0 48 21 c7 <48> 8b 04 fd a0 02 c0 81 48 89 ef e8 4c 94 23 00 48 89 45 50 48 89
All code
========
ÂÂ 0:ÂÂÂ 00 65 48ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ addÂÂÂ %ah,0x48(%rbp)
ÂÂ 3:ÂÂÂ 8b 04 25 c0 7b 01 00 ÂÂÂ movÂÂÂ 0x17bc0,%eax
ÂÂ a:ÂÂÂ 48 8b 00ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ (%rax),%rax
ÂÂ d:ÂÂÂ a9 c1 01 00 10ÂÂÂÂÂÂ ÂÂÂ testÂÂ $0x100001c1,%eax
Â 12:ÂÂÂ 75 40ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jneÂÂÂ 0x54
Â 14:ÂÂÂ 48 81 ff b7 01 00 00 ÂÂÂ cmpÂÂÂ $0x1b7,%rdi
Â 1b:ÂÂÂ 77 4bÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ jaÂÂÂÂ 0x68
Â 1d:ÂÂÂ 48 81 ff b8 01 00 48 ÂÂÂ cmpÂÂÂ $0x480001b8,%rdi
Â 24:ÂÂÂ 19 c0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ sbbÂÂÂ %eax,%eax
Â 26:ÂÂÂ 48 21 c7ÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ andÂÂÂ %rax,%rdi
Â 29:*ÂÂÂ 48 8b 04 fd a0 02 c0 ÂÂÂ mov -0x7e3ffd60(,%rdi,8),%raxÂÂÂ ÂÂÂ <-- trapping instruction
Â 30:ÂÂÂ 81
Â 31:ÂÂÂ 48 89 efÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %rbp,%rdi
Â 34:ÂÂÂ e8 4c 94 23 00ÂÂÂÂÂÂ ÂÂÂ callqÂ 0x239485
Â 39:ÂÂÂ 48 89 45 50ÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %rax,0x50(%rbp)
Â 3d:ÂÂÂ 48ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ rex.W
Â 3e:ÂÂÂ 89ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0x89

Code starting with the faulting instruction
===========================================
ÂÂ 0:ÂÂÂ 48 8b 04 fd a0 02 c0 ÂÂÂ movÂÂÂ -0x7e3ffd60(,%rdi,8),%rax
ÂÂ 7:ÂÂÂ 81
ÂÂ 8:ÂÂÂ 48 89 efÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %rbp,%rdi
ÂÂ b:ÂÂÂ e8 4c 94 23 00ÂÂÂÂÂÂ ÂÂÂ callqÂ 0x23945c
Â 10:ÂÂÂ 48 89 45 50ÂÂÂÂÂÂÂÂÂ ÂÂÂ movÂÂÂ %rax,0x50(%rbp)
Â 14:ÂÂÂ 48ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ rex.W
Â 15:ÂÂÂ 89ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ ÂÂÂ .byte 0x89

RSP: 0018:ffffc90003a1ff48 EFLAGS: 00010292
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 00000000018dafa4
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffc90003a1fd20
RBP: ffffc90003a1ff58 R08: 0000000000000000 R09: ffff8887f7b13c00
R10: 0000000000000057 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
? do_syscall_64 (/usr/src/linux/arch/x86/entry/common.c:384)
entry_SYSCALL_64_after_hwframe (/usr/src/linux/arch/x86/entry/entry_64.S:124)
RIP: 0033:0x7feedffe590a
Code: Bad RIP value.
objdump: '/tmp/tmp.GTDYXyBfvG.o': No such file

Code starting with the faulting instruction
===========================================
RSP: 002b:00007feecee06b60 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000003245 RCX: 00007feedffe590a
RDX: 0000000000000000 RSI: 0000000000000089 RDI: 00007feedf8490e4
RBP: 00007feedf8490b8 R08: 0000000000000000 R09: 00000000ffffffff
R10: 00007feecee06c40 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feedf849088 R14: 00007feedf8490e4 R15: 00007feecee06ba0
----[ end trace 91dfe9f4af058936 ]---

--

Â- Ilkka

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