syzbot has bisected this bug to:
commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31
Author: Russell Currey <ruscur@xxxxxxxxxx>
Date: Mon Feb 8 04:08:20 2016 +0000
powerpc/powernv: Remove support for p5ioc2
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=127a042ae00000
start commit: 76bb8b05 Merge tag 'kbuild-v5.5' of git://git.kernel.org/p..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=117a042ae00000
console output: https://syzkaller.appspot.com/x/log.txt?x=167a042ae00000
kernel config: https://syzkaller.appspot.com/x/.config?x=dd226651cb0f364b
dashboard link: https://syzkaller.appspot.com/bug?extid=4455ca3b3291de891abc
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11181edae00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=105cbb7ae00000
Reported-by: syzbot+4455ca3b3291de891abc@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 2de50e9674fc ("powerpc/powernv: Remove support for p5ioc2")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
