Re: WARNING in ext4_set_page_dirty

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 7dfbf8a07cf8c936b0d6cc810df6ae7923954d5b
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date:   Tue Jun 30 15:27:24 2020 +0000

    drm/i915: Skip stale object handle for debugfs per-file-stats

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=153d895f900000
start commit:   46cf053e Linux 5.5-rc3
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=ed9d672709340e35
dashboard link: https://syzkaller.appspot.com/bug?extid=9a44753ac327c557796a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10055799e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15b852c6e00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: drm/i915: Skip stale object handle for debugfs per-file-stats

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