syzbot suspects this issue was fixed by commit:
commit c57a91fb1ccfa203ba3e31e5a389cb04de5b0561
Author: Pavel Begunkov <asml.silence@xxxxxxxxx>
Date: Wed Sep 8 19:49:17 2021 +0000
io_uring: fix missing mb() before waitqueue_active
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=143b46bf300000
start commit: 926de8c4326c Merge tag 'acpi-5.15-rc1-3' of git://git.kern..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=37df9ef5660a8387
dashboard link: https://syzkaller.appspot.com/bug?extid=bc2d90f602545761f287
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e4357d300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1173a663300000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: io_uring: fix missing mb() before waitqueue_active
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
