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=164ae51fe00000 start commit: 7be97138 Merge tag 'xfs-5.7-merge-8' of git://git.kernel.o.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=154ae51fe00000 console output: https://syzkaller.appspot.com/x/log.txt?x=114ae51fe00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ec722f9d4eb221d2 dashboard link: https://syzkaller.appspot.com/bug?extid=832aabf700bc3ec920b9 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f37663e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16feb91fe00000 Reported-by: syzbot+832aabf700bc3ec920b9@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 7bc3e6e55acf ("proc: Use a list of inodes to flush from proc") For information about bisection process see: https://goo.gl/tpsmEJ#bisection