Re: possible deadlock in io_submit_one (3)

[syzbot]

syzbot has bisected this bug to:

commit 7bc3e6e55acf065500a24621f3b313e7e5998acf
Author: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Date:   Thu Feb 20 00:22:26 2020 +0000

    proc: Use a list of inodes to flush from proc

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12b3c9c7e00000
start commit:   7e634208 Merge tag 'acpi-5.7-rc1-2' of git://git.kernel.or..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=11b3c9c7e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=16b3c9c7e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=12205d036cec317f
dashboard link: https://syzkaller.appspot.com/bug?extid=343f75cdeea091340956
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=105d592be00000

Reported-by: syzbot+343f75cdeea091340956@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 7bc3e6e55acf ("proc: Use a list of inodes to flush from proc")

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