Re: [syzbot] possible deadlock in io_poll_double_wake (3)

From: syzbot
Date: Fri Feb 11 2022 - 04:13:11 EST


syzbot suspects this issue was fixed by commit:

commit aa43477b040251f451db0d844073ac00a8ab66ee
Author: Pavel Begunkov <asml.silence@xxxxxxxxx>
Date: Wed Dec 15 22:08:48 2021 +0000

io_uring: poll rework

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=110d0baa700000
start commit: c9e6606c7fe9 Linux 5.16-rc8
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=4772459294eb89cc
dashboard link: https://syzkaller.appspot.com/bug?extid=e654d4e15e6b3b9deb53
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f87335b00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ac8a73b00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: io_uring: poll rework

For information about bisection process see: https://goo.gl/tpsmEJ#bisection