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