syzbot has bisected this bug to:

commit f4b3526d83c40dd8bf5948b9d7a1b2c340f0dcc8 Author: David Howells dhowells@redhat.com Date: Thu Nov 2 15:27:48 2017 +0000

afs: Connect up the CB.ProbeUuid

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1627a721e00000 start commit: d96d875e Merge tag 'fixes_for_v5.5-rc8' of git://git.kerne.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1527a721e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1127a721e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=83c00afca9cf5153 dashboard link: https://syzkaller.appspot.com/bug?extid=b904ba7c947a37b4b291 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c96185e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f859c9e00000

Reported-by: syzbot+b904ba7c947a37b4b291@syzkaller.appspotmail.com Fixes: f4b3526d83c4 ("afs: Connect up the CB.ProbeUuid")

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