syzbot has bisected this issue to:
commit 45d9c8dde4cd8589f9180309ec60f0da2ce486e4
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Thu Aug 12 13:14:12 2021 +0000
drm/vgem: use shmem helpers
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=147953cbb00000
start commit: 3f667b5d4053 Merge tag 'tty-5.16-rc6' of git://git.kernel...
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=167953cbb00000
console output: https://syzkaller.appspot.com/x/log.txt?x=127953cbb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa556098924b78f0
dashboard link: https://syzkaller.appspot.com/bug?extid=c8ae65286134dd1b800d
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16fd41ebb00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1483c7d5b00000
Reported-by: syzbot+c8ae65286134dd1b800d@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 45d9c8dde4cd ("drm/vgem: use shmem helpers")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
