On 7/7/25 17:27, syzbot wrote:
syzbot has bisected this issue to:
commit 2af89abda7d9c2aeb573677e2c498ddb09f8058a
Author: Pavel Begunkov <asml.silence@xxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 2af89abda7d9 ("io_uring: add option to remove SQ indirection")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
--
Pavel Begunkov
