* Re: [syzbot] [cgroups?] possible deadlock in console_lock_spinning_enable (5)
[not found] <0000000000001e66f5061fe3b883@google.com>
@ 2025-01-17 12:34 ` syzbot
2025-01-21 18:29 ` Michal Koutný
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2025-01-17 12:34 UTC (permalink / raw)
To: andrii, ast, bpf, cgroups, daniel, davem, elic, gregkh, hannes,
hawk, jasowang, jirislaby, john.fastabend, kafai, kpsingh, kuba,
len.brown, linux-kernel, linux-pm, linux-serial, mingo, mkoutny,
mst, netdev, parav, pavel, rafael, rostedt, songliubraving,
syzkaller-bugs, tj, yhs
syzbot has bisected this issue to:
commit bc0d90ee021f1baecd6aaa010d787eb373aa74dd
Author: Parav Pandit <parav@nvidia.com>
Date: Tue Jan 5 10:32:02 2021 +0000
vdpa: Enable user to query vdpa device info
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1440c2b0580000
start commit: 619f0b6fad52 Merge tag 'seccomp-v6.13-rc8' of git://git.ke..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=1640c2b0580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1240c2b0580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d1cb4a1f148c0861
dashboard link: https://syzkaller.appspot.com/bug?extid=622acb507894a48b2ce9
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175029df980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f29a18580000
Reported-by: syzbot+622acb507894a48b2ce9@syzkaller.appspotmail.com
Fixes: bc0d90ee021f ("vdpa: Enable user to query vdpa device info")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [syzbot] [cgroups?] possible deadlock in console_lock_spinning_enable (5)
2025-01-17 12:34 ` [syzbot] [cgroups?] possible deadlock in console_lock_spinning_enable (5) syzbot
@ 2025-01-21 18:29 ` Michal Koutný
0 siblings, 0 replies; 2+ messages in thread
From: Michal Koutný @ 2025-01-21 18:29 UTC (permalink / raw)
To: syzbot
Cc: andrii, ast, bpf, cgroups, daniel, davem, elic, gregkh, hannes,
hawk, jasowang, jirislaby, john.fastabend, kafai, kpsingh, kuba,
len.brown, linux-kernel, linux-pm, linux-serial, mingo, mst,
netdev, parav, pavel, rafael, rostedt, songliubraving,
syzkaller-bugs, tj, yhs
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On Fri, Jan 17, 2025 at 04:34:03AM -0800, syzbot <syzbot+622acb507894a48b2ce9@syzkaller.appspotmail.com> wrote:
> syzbot has bisected this issue to:
>
> commit bc0d90ee021f1baecd6aaa010d787eb373aa74dd
> Author: Parav Pandit <parav@nvidia.com>
> Date: Tue Jan 5 10:32:02 2021 +0000
>
> vdpa: Enable user to query vdpa device info
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1440c2b0580000
syzbot got this somehow wrong, it started with the lockdep bug but then
switched to a different
| crash: BUG: unable to handle kernel paging request in bpf_trace_run3
so the bisecting session yielded (I believe) random commit, didn't it?
(The lockdep appears valid, with PSI enabled and the fault injection at
unfortunate place (with BPF'd tracepoint).)
Michal
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-01-17 12:34 ` [syzbot] [cgroups?] possible deadlock in console_lock_spinning_enable (5) syzbot
2025-01-21 18:29 ` Michal Koutný
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