syzbot suspects this issue was fixed by commit:
commit b7ddce3cbf010edbfac6c6d8cc708560a7bcd7a4
Author: Pavel Begunkov <asml.silence@xxxxxxxxx>
Date: Sat Sep 5 21:45:14 2020 +0000
io_uring: fix cancel of deferred reqs with ->files
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=173d9b0d900000
start commit: 9123e3a7 Linux 5.9-rc1
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=3d400a47d1416652
dashboard link: https://syzkaller.appspot.com/bug?extid=6338dcebf269a590b668
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1573f116900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144d3072900000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: io_uring: fix cancel of deferred reqs with ->files
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
