* Re: [syzbot] [fs?] INFO: task hung in do_coredump (3)
[not found] <6710d2a2.050a0220.d9b66.0189.GAE@google.com>
@ 2025-07-07 16:27 ` syzbot
2025-07-08 8:24 ` Pavel Begunkov
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2025-07-07 16:27 UTC (permalink / raw)
To: anna-maria, asml.silence, axboe, brauner, frederic, gregkh,
hdanton, io-uring, jack, linux-fsdevel, linux-kernel, luto,
peterz, syzkaller-bugs, tglx, tj, viro
syzbot has bisected this issue to:
commit 2af89abda7d9c2aeb573677e2c498ddb09f8058a
Author: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu Aug 24 22:53:32 2023 +0000
io_uring: add option to remove SQ indirection
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ec9582580000
start commit: 05df91921da6 Merge tag 'v6.16-rc4-smb3-client-fixes' of gi..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=16ec9582580000
console output: https://syzkaller.appspot.com/x/log.txt?x=12ec9582580000
kernel config: https://syzkaller.appspot.com/x/.config?x=45bd916a213c79bb
dashboard link: https://syzkaller.appspot.com/bug?extid=a8cdfe2d8ad35db3a7fd
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11a2228c580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d48bd4580000
Reported-by: syzbot+a8cdfe2d8ad35db3a7fd@syzkaller.appspotmail.com
Fixes: 2af89abda7d9 ("io_uring: add option to remove SQ indirection")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [syzbot] [fs?] INFO: task hung in do_coredump (3)
2025-07-07 16:27 ` [syzbot] [fs?] INFO: task hung in do_coredump (3) syzbot
@ 2025-07-08 8:24 ` Pavel Begunkov
0 siblings, 0 replies; 2+ messages in thread
From: Pavel Begunkov @ 2025-07-08 8:24 UTC (permalink / raw)
To: syzbot, anna-maria, axboe, brauner, frederic, gregkh, hdanton,
io-uring, jack, linux-fsdevel, linux-kernel, luto, peterz,
syzkaller-bugs, tglx, tj, viro
On 7/7/25 17:27, syzbot wrote:
> syzbot has bisected this issue to:
>
> commit 2af89abda7d9c2aeb573677e2c498ddb09f8058a
> Author: Pavel Begunkov <asml.silence@gmail.com>
> Date: Thu Aug 24 22:53:32 2023 +0000
>
> io_uring: add option to remove SQ indirection
Doesn't look like the cause, the previous repro from 28 Oct 2024 didn't
even have any io_uring, and the patch only reduces sizes of some
allocations. The common part b/w programs is
prctl(PR_SET_SYSCALL_USER_DISPATCH_ON), might be related to that.
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ec9582580000
> start commit: 05df91921da6 Merge tag 'v6.16-rc4-smb3-client-fixes' of gi..
> git tree: upstream
> final oops: https://syzkaller.appspot.com/x/report.txt?x=16ec9582580000
> console output: https://syzkaller.appspot.com/x/log.txt?x=12ec9582580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=45bd916a213c79bb
> dashboard link: https://syzkaller.appspot.com/bug?extid=a8cdfe2d8ad35db3a7fd
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11a2228c580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d48bd4580000
>
> Reported-by: syzbot+a8cdfe2d8ad35db3a7fd@syzkaller.appspotmail.com
> Fixes: 2af89abda7d9 ("io_uring: add option to remove SQ indirection")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
--
Pavel Begunkov
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-07-07 16:27 ` [syzbot] [fs?] INFO: task hung in do_coredump (3) syzbot
2025-07-08 8:24 ` Pavel Begunkov
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