syzbot has bisected this issue to:
commit c99c2171fc61476afac0dfb59fb2c447a01fb1e0
Author: David Howells <dhowe...@redhat.com>
Date: Thu Nov 1 23:07:27 2018 +0000
afs: Use fs_context to pass parameters over automount
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10679fa9900000
start commit: abb3438d Merge tag 'm68knommu-for-v5.9-rc3' of git://git.k..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=12679fa9900000
console output: https://syzkaller.appspot.com/x/log.txt?x=14679fa9900000
kernel config: https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650
dashboard link: https://syzkaller.appspot.com/bug?extid=f59c67285cb61166a0cf
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d97d46900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14eb9fa9900000
Reported-by: syzbot+f59c67285cb61166a...@syzkaller.appspotmail.com
Fixes: c99c2171fc61 ("afs: Use fs_context to pass parameters over automount")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
