From: syzbot <syzbot+30189c98403be62bc05a@syzkaller.appspotmail.com>
To: acme@kernel.org, alexander.shishkin@linux.intel.com,
andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org,
daniel@iogearbox.net, john.fastabend@gmail.com, jolsa@redhat.com,
kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org,
mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org,
netdev@vger.kernel.org, peterz@infradead.org,
songliubraving@fb.com, syzkaller-bugs@googlegroups.com,
yhs@fb.com
Subject: [syzbot] WARNING in task_ctx_sched_out
Date: Mon, 17 May 2021 08:10:19 -0700 [thread overview]
Message-ID: <000000000000e65b5d05c287fddc@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 18a3c5f7 Merge tag 'for_linus' of git://git.kernel.org/pub..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes
console output: https://syzkaller.appspot.com/x/log.txt?x=1569c027d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b8ac1fe5995f69d7
dashboard link: https://syzkaller.appspot.com/bug?extid=30189c98403be62bc05a
userspace arch: riscv64
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+30189c98403be62bc05a@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8711 at kernel/events/core.c:2668 task_ctx_sched_out+0x5c/0x60 kernel/events/core.c:2668
Modules linked in:
CPU: 0 PID: 8711 Comm: syz-executor.0 Not tainted 5.12.0-rc8-syzkaller-00011-g18a3c5f7abfd #0
Hardware name: riscv-virtio,qemu (DT)
epc : task_ctx_sched_out+0x5c/0x60 kernel/events/core.c:2668
ra : task_ctx_sched_out+0x5c/0x60 kernel/events/core.c:2668
epc : ffffffe00027ccf0 ra : ffffffe00027ccf0 sp : ffffffe0067abb80
gp : ffffffe0045883c0 tp : ffffffe00db797c0 t0 : ffffffc400b23834
t1 : 0000000000000001 t2 : 00000000000f4240 s0 : ffffffe0067abbb0
s1 : ffffffe066d59e00 a0 : ffffffe066d59fa8 a1 : 00000000000f0000
a2 : 0000000000000002 a3 : ffffffe00027ccf0 a4 : ffffffe00db7a7c0
a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffe00028fc4c
s2 : ffffffe00877e400 s3 : 0000000000000003 s4 : ffffffe00df38800
s5 : ffffffe00db7ab48 s6 : ffffffe00db7aab8 s7 : ffffffe00877e408
s8 : 0000000000000000 s9 : 0000000000000025 s10: ffffffe00db797c0
s11: ffffffe0067abe30 t3 : 1ef9635ec2383300 t4 : ffffffc404c957b2
t5 : ffffffc404c957ba t6 : 0000000000040000
status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003
Call Trace:
[<ffffffe00027ccf0>] task_ctx_sched_out+0x5c/0x60 kernel/events/core.c:2668
[<ffffffe00028fc98>] perf_event_exit_task_context kernel/events/core.c:12483 [inline]
[<ffffffe00028fc98>] perf_event_exit_task+0x214/0x708 kernel/events/core.c:12541
[<ffffffe000031fc4>] do_exit+0x77a/0x1846 kernel/exit.c:834
[<ffffffe00003319a>] do_group_exit+0xa0/0x198 kernel/exit.c:922
[<ffffffe00004c558>] get_signal+0x31e/0x14ba kernel/signal.c:2781
[<ffffffe000007e06>] do_signal arch/riscv/kernel/signal.c:271 [inline]
[<ffffffe000007e06>] do_notify_resume+0xa8/0x930 arch/riscv/kernel/signal.c:317
[<ffffffe000005586>] ret_from_exception+0x0/0x14
irq event stamp: 3704
hardirqs last enabled at (3703): [<ffffffe002a9a784>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last enabled at (3703): [<ffffffe002a9a784>] _raw_spin_unlock_irqrestore+0x68/0x98 kernel/locking/spinlock.c:191
hardirqs last disabled at (3704): [<ffffffe002a9a41c>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline]
hardirqs last disabled at (3704): [<ffffffe002a9a41c>] _raw_spin_lock_irq+0x5c/0x5e kernel/locking/spinlock.c:167
softirqs last enabled at (3672): [<ffffffe002a9b578>] __do_softirq+0x5e0/0x8c4 kernel/softirq.c:372
softirqs last disabled at (3667): [<ffffffe00003507e>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (3667): [<ffffffe00003507e>] invoke_softirq kernel/softirq.c:228 [inline]
softirqs last disabled at (3667): [<ffffffe00003507e>] __irq_exit_rcu kernel/softirq.c:422 [inline]
softirqs last disabled at (3667): [<ffffffe00003507e>] irq_exit+0x1a0/0x1b6 kernel/softirq.c:446
---[ end trace 2de0fbf815e6ece8 ]---
---
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next reply other threads:[~2021-05-17 15:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 15:10 syzbot [this message]
2021-05-17 15:42 ` [syzbot] WARNING in task_ctx_sched_out Dmitry Vyukov
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