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SubjectRe: possible deadlock in io_submit_one (3)
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syzbot has bisected this bug to:

commit 7bc3e6e55acf065500a24621f3b313e7e5998acf
Author: Eric W. Biederman <ebiederm@xmission.com>
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@syzkaller.appspotmail.com
Fixes: 7bc3e6e55acf ("proc: Use a list of inodes to flush from proc")

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

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