syzbot has bisected this issue to:
commit 4d004099a668c41522242aa146a38cc4eb59cb1e
Author: Peter Zijlstra <pet...@infradead.org>
Date: Fri Oct 2 09:04:21 2020 +0000
lockdep: Fix lockdep recursion
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=174a766f900000
start commit: 9ff9b0d3 Merge tag 'net-next-5.10' of git://git.kernel.org..
git tree: net-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=14ca766f900000
console output: https://syzkaller.appspot.com/x/log.txt?x=10ca766f900000
kernel config: https://syzkaller.appspot.com/x/.config?x=d13c3fa80bc4bcc1
dashboard link: https://syzkaller.appspot.com/bug?extid=53f8ce8bbc07924b6417
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15b63310500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1565657f900000
Reported-by: syzbot+53f8ce8bbc07924b6...@syzkaller.appspotmail.com
Fixes: 4d004099a668 ("lockdep: Fix lockdep recursion")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
