INFO: rcu detected stall in expire_timers
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syzbot
Jun 21, 2020, 2:49:15 AM6/21/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 3fc89857 Linux 4.19.128
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11e3de0d100000
kernel config: https://syzkaller.appspot.com/x/.config?x=6c6e6bf14f2aabf
dashboard link: https://syzkaller.appspot.com/bug?extid=384aabb0673df057485b
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+384aab...@syzkaller.appspotmail.com
aoe: packet could not be sent on ipvlan1. consider increasing tx_queue_len
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10499 ticks this GP) idle=33a/1/0x4000000000000004 softirq=485132/485132 fqs=2
rcu: (t=10501 jiffies g=508517 q=168)
NMI backtrace for cpu 0
aoe: packet could not be sent on ipvlan1. consider increasing tx_queue_len
CPU: 0 PID: 27145 Comm: syz-executor.2 Not tainted 4.19.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x170/0x1bb kernel/rcu/tree.c:1340
print_cpu_stall kernel/rcu/tree.c:1478 [inline]
check_cpu_stall kernel/rcu/tree.c:1550 [inline]
__rcu_pending kernel/rcu/tree.c:3293 [inline]
rcu_pending kernel/rcu/tree.c:3336 [inline]
rcu_check_callbacks.cold+0x634/0xddc kernel/rcu/tree.c:2682
update_process_times+0x2a/0x70 kernel/time/timer.c:1638
tick_sched_handle.isra.0+0x91/0x180 kernel/time/tick-sched.c:168
tick_sched_timer+0x44/0x130 kernel/time/tick-sched.c:1278
__run_hrtimer kernel/time/hrtimer.c:1401 [inline]
__hrtimer_run_queues+0x2ec/0xd20 kernel/time/hrtimer.c:1463
hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1521
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x50/0x90 kernel/locking/spinlock.c:192
Code: c0 d8 57 b2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 21 40 94 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 66 1e 28 fa 65 8b 05 ff d5 e3 78 85 c0 74 02 5d
RSP: 0018:ffff8880ae607dd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1164afb RBX: dffffc0000000000 RCX: 1ffff110124ae97d
RDX: dffffc0000000000 RSI: ffff888092574bc8 RDI: ffff888092574bc4
RBP: ffff8880ae623a40 R08: ffff888092574340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85afa480
R13: ffff8880ae623a40 R14: ffff8880ae607e70 R15: 1ffff11015cc0fce
expire_timers+0x244/0x4f0 kernel/time/timer.c:1362
__run_timers kernel/time/timer.c:1684 [inline]
run_timer_softirq+0x218/0x660 kernel/time/timer.c:1697
__do_softirq+0x26c/0x93d kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x17b/0x1c0 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:101
Code: 0a 41 bc f4 ff ff ff e8 1a a4 eb ff 48 c7 05 86 92 06 0a 00 00 00 00 e9 24 ec ff ff 90 48 8b 34 24 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 fc 52 9a 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83
RSP: 0018:ffff88820252fb20 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffff888092574340 RBX: ffff888098836a40 RCX: ffffffff831827cb
RDX: 0000000000000006 RSI: ffffffff8318277f RDI: 0000000000000004
RBP: 0000000000000007 R08: ffff888092574340 R09: fffffbfff16fdef3
R10: fffffbfff16fdef2 R11: ffffffff8b7ef793 R12: ffff888099fe5388
R13: dffffc0000000000 R14: 0000000000000006 R15: 1ffff110133fca72
security_compute_sid.part.0+0x85f/0x13c0 security/selinux/ss/services.c:1772
security_compute_sid security/selinux/ss/services.c:1825 [inline]
security_transition_sid+0x123/0x190 security/selinux/ss/services.c:1825
socket_sockcreate_sid security/selinux/hooks.c:4561 [inline]
socket_sockcreate_sid security/selinux/hooks.c:4553 [inline]
selinux_socket_create+0x3ff/0x580 security/selinux/hooks.c:4595
security_socket_create+0x78/0xc0 security/security.c:1375
__sock_create+0x88/0x740 net/socket.c:1231
sock_create net/socket.c:1316 [inline]
__sys_socket+0xef/0x200 net/socket.c:1346
__do_sys_socket net/socket.c:1355 [inline]
__se_sys_socket net/socket.c:1353 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1353
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca59
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe7d28a5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000508060 RCX: 000000000045ca59
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000bb7 R14: 00000000004ce162 R15: 00007fe7d28a66d4
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc rtc0: __rtc_set_alarm: err=-22
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 3fc89857 Linux 4.19.128
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11e3de0d100000
kernel config: https://syzkaller.appspot.com/x/.config?x=6c6e6bf14f2aabf
dashboard link: https://syzkaller.appspot.com/bug?extid=384aabb0673df057485b
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+384aab...@syzkaller.appspotmail.com
aoe: packet could not be sent on ipvlan1. consider increasing tx_queue_len
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10499 ticks this GP) idle=33a/1/0x4000000000000004 softirq=485132/485132 fqs=2
rcu: (t=10501 jiffies g=508517 q=168)
NMI backtrace for cpu 0
aoe: packet could not be sent on ipvlan1. consider increasing tx_queue_len
CPU: 0 PID: 27145 Comm: syz-executor.2 Not tainted 4.19.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x170/0x1bb kernel/rcu/tree.c:1340
print_cpu_stall kernel/rcu/tree.c:1478 [inline]
check_cpu_stall kernel/rcu/tree.c:1550 [inline]
__rcu_pending kernel/rcu/tree.c:3293 [inline]
rcu_pending kernel/rcu/tree.c:3336 [inline]
rcu_check_callbacks.cold+0x634/0xddc kernel/rcu/tree.c:2682
update_process_times+0x2a/0x70 kernel/time/timer.c:1638
tick_sched_handle.isra.0+0x91/0x180 kernel/time/tick-sched.c:168
tick_sched_timer+0x44/0x130 kernel/time/tick-sched.c:1278
__run_hrtimer kernel/time/hrtimer.c:1401 [inline]
__hrtimer_run_queues+0x2ec/0xd20 kernel/time/hrtimer.c:1463
hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1521
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x50/0x90 kernel/locking/spinlock.c:192
Code: c0 d8 57 b2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 21 40 94 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 66 1e 28 fa 65 8b 05 ff d5 e3 78 85 c0 74 02 5d
RSP: 0018:ffff8880ae607dd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1164afb RBX: dffffc0000000000 RCX: 1ffff110124ae97d
RDX: dffffc0000000000 RSI: ffff888092574bc8 RDI: ffff888092574bc4
RBP: ffff8880ae623a40 R08: ffff888092574340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85afa480
R13: ffff8880ae623a40 R14: ffff8880ae607e70 R15: 1ffff11015cc0fce
expire_timers+0x244/0x4f0 kernel/time/timer.c:1362
__run_timers kernel/time/timer.c:1684 [inline]
run_timer_softirq+0x218/0x660 kernel/time/timer.c:1697
__do_softirq+0x26c/0x93d kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x17b/0x1c0 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:101
Code: 0a 41 bc f4 ff ff ff e8 1a a4 eb ff 48 c7 05 86 92 06 0a 00 00 00 00 e9 24 ec ff ff 90 48 8b 34 24 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 fc 52 9a 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83
RSP: 0018:ffff88820252fb20 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffff888092574340 RBX: ffff888098836a40 RCX: ffffffff831827cb
RDX: 0000000000000006 RSI: ffffffff8318277f RDI: 0000000000000004
RBP: 0000000000000007 R08: ffff888092574340 R09: fffffbfff16fdef3
R10: fffffbfff16fdef2 R11: ffffffff8b7ef793 R12: ffff888099fe5388
R13: dffffc0000000000 R14: 0000000000000006 R15: 1ffff110133fca72
security_compute_sid.part.0+0x85f/0x13c0 security/selinux/ss/services.c:1772
security_compute_sid security/selinux/ss/services.c:1825 [inline]
security_transition_sid+0x123/0x190 security/selinux/ss/services.c:1825
socket_sockcreate_sid security/selinux/hooks.c:4561 [inline]
socket_sockcreate_sid security/selinux/hooks.c:4553 [inline]
selinux_socket_create+0x3ff/0x580 security/selinux/hooks.c:4595
security_socket_create+0x78/0xc0 security/security.c:1375
__sock_create+0x88/0x740 net/socket.c:1231
sock_create net/socket.c:1316 [inline]
__sys_socket+0xef/0x200 net/socket.c:1346
__do_sys_socket net/socket.c:1355 [inline]
__se_sys_socket net/socket.c:1353 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1353
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca59
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe7d28a5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000508060 RCX: 000000000045ca59
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000bb7 R14: 00000000004ce162 R15: 00007fe7d28a66d4
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc_cmos 00:00: Alarms can be up to one day in the future
rtc rtc0: __rtc_set_alarm: err=-22
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
May 23, 2021, 6:04:15 AM5/23/21
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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