syzbot has bisected this issue to:
commit 6647e76ab623b2b3fb2efe03a86e9c9046c52c33
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Thu Dec 1 00:10:52 2022 +0000
v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=115987c5480000
start commit: e4cf7c25bae5 Merge tag 'kbuild-fixes-v6.2' of git://git.ke..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=135987c5480000
console output: https://syzkaller.appspot.com/x/log.txt?x=155987c5480000
kernel config: https://syzkaller.appspot.com/x/.config?x=2651619a26b4d687
dashboard link: https://syzkaller.appspot.com/bug?extid=59a71007ccac79e8bb69
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ee1934480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=101b997c480000
Reported-by: syzbot+59a71007ccac79e8bb69@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 6647e76ab623 ("v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
