* [syzbot] riscv/fixes boot error: INFO: rcu detected stall in corrupted
@ 2023-02-15 0:24 ` syzbot
0 siblings, 0 replies; 4+ messages in thread
From: syzbot @ 2023-02-15 0:24 UTC (permalink / raw)
To: aou, brauner, bristot, bsegall, dietmar.eggemann, juri.lelli,
linux-kernel, linux-riscv, mgorman, mingo, palmer, paul.walmsley,
peterz, rostedt, syzkaller-bugs, vincent.guittot, vschneid
Hello,
syzbot found the following issue on:
HEAD commit: 950b879b7f02 riscv: Fixup race condition on PG_dcache_clea..
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=137aaec0c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=b3cd714c8e9a6e01
dashboard link: https://syzkaller.appspot.com/bug?extid=42670398d6ddb118138f
compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: riscv64
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=9960
(detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
Task dump for CPU 0:
task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
Call Trace:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=28261
(detected by 1, t=122009 jiffies, g=14713, q=4 ncpus=2)
Task dump for CPU 0:
task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
Call Trace:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
---
This report 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 syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [syzbot] riscv/fixes boot error: INFO: rcu detected stall in corrupted
@ 2023-02-15 0:24 ` syzbot
0 siblings, 0 replies; 4+ messages in thread
From: syzbot @ 2023-02-15 0:24 UTC (permalink / raw)
To: aou, brauner, bristot, bsegall, dietmar.eggemann, juri.lelli,
linux-kernel, linux-riscv, mgorman, mingo, palmer, paul.walmsley,
peterz, rostedt, syzkaller-bugs, vincent.guittot, vschneid
Hello,
syzbot found the following issue on:
HEAD commit: 950b879b7f02 riscv: Fixup race condition on PG_dcache_clea..
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=137aaec0c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=b3cd714c8e9a6e01
dashboard link: https://syzkaller.appspot.com/bug?extid=42670398d6ddb118138f
compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: riscv64
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=9960
(detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
Task dump for CPU 0:
task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
Call Trace:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=28261
(detected by 1, t=122009 jiffies, g=14713, q=4 ncpus=2)
Task dump for CPU 0:
task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
Call Trace:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
---
This report 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 syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] riscv/fixes boot error: INFO: rcu detected stall in corrupted
2023-02-15 0:24 ` syzbot
@ 2023-02-15 8:46 ` Dmitry Vyukov
-1 siblings, 0 replies; 4+ messages in thread
From: Dmitry Vyukov @ 2023-02-15 8:46 UTC (permalink / raw)
To: syzbot
Cc: aou, brauner, bristot, bsegall, dietmar.eggemann, juri.lelli,
linux-kernel, linux-riscv, mgorman, mingo, palmer, paul.walmsley,
peterz, rostedt, syzkaller-bugs, vincent.guittot, vschneid,
Alex Ghiti
On Wed, 15 Feb 2023 at 01:24, syzbot
<syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 950b879b7f02 riscv: Fixup race condition on PG_dcache_clea..
> 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=137aaec0c80000
> kernel config: https://syzkaller.appspot.com/x/.config?x=b3cd714c8e9a6e01
> dashboard link: https://syzkaller.appspot.com/bug?extid=42670398d6ddb118138f
> compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: riscv64
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com
>
> rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=9960
> (detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
> Task dump for CPU 0:
> task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
> Call Trace:
> [<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
> [<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
> rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=28261
> (detected by 1, t=122009 jiffies, g=14713, q=4 ncpus=2)
> Task dump for CPU 0:
> task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
> Call Trace:
> [<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
> [<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
Humm... initially I thought this may be related to the riscv issue
with too short command line (commit "riscv: Bump COMMAND_LINE_SIZE
value to 1024").
But it seems this actually fired after 300 seconds, right? (300
seconds is the intended timeout on syzbot):
> (detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] riscv/fixes boot error: INFO: rcu detected stall in corrupted
@ 2023-02-15 8:46 ` Dmitry Vyukov
0 siblings, 0 replies; 4+ messages in thread
From: Dmitry Vyukov @ 2023-02-15 8:46 UTC (permalink / raw)
To: syzbot
Cc: aou, brauner, bristot, bsegall, dietmar.eggemann, juri.lelli,
linux-kernel, linux-riscv, mgorman, mingo, palmer, paul.walmsley,
peterz, rostedt, syzkaller-bugs, vincent.guittot, vschneid,
Alex Ghiti
On Wed, 15 Feb 2023 at 01:24, syzbot
<syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 950b879b7f02 riscv: Fixup race condition on PG_dcache_clea..
> 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=137aaec0c80000
> kernel config: https://syzkaller.appspot.com/x/.config?x=b3cd714c8e9a6e01
> dashboard link: https://syzkaller.appspot.com/bug?extid=42670398d6ddb118138f
> compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: riscv64
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com
>
> rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=9960
> (detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
> Task dump for CPU 0:
> task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
> Call Trace:
> [<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
> [<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
> rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=28261
> (detected by 1, t=122009 jiffies, g=14713, q=4 ncpus=2)
> Task dump for CPU 0:
> task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008
> Call Trace:
> [<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
> [<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
Humm... initially I thought this may be related to the riscv issue
with too short command line (commit "riscv: Bump COMMAND_LINE_SIZE
value to 1024").
But it seems this actually fired after 300 seconds, right? (300
seconds is the intended timeout on syzbot):
> (detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2)
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-02-15 8:46 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2023-02-15 0:24 [syzbot] riscv/fixes boot error: INFO: rcu detected stall in corrupted syzbot
2023-02-15 0:24 ` syzbot
2023-02-15 8:46 ` Dmitry Vyukov
2023-02-15 8:46 ` Dmitry Vyukov
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