syzbot has bisected this bug to:
commit 6d469a202ee73196d0df76025af80bd6a379e658
Author: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Date: Sun May 14 17:07:21 2017 +0000
Merge tag 'v4.12-rc1' into patchwork
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12639fd7200000
start commit: 6d469a20 Merge tag 'v4.12-rc1' into patchwork
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=15639fd7200000
console output: https://syzkaller.appspot.com/x/log.txt?x=11639fd7200000
kernel config: https://syzkaller.appspot.com/x/.config?x=d86f24333880b605
dashboard link: https://syzkaller.appspot.com/bug?extid=6c0effb5877f6b0344e2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1312062b400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=131bd093400000
Reported-by: syzbot+6c0effb5877f6b0344e2@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 6d469a20 ("Merge tag 'v4.12-rc1' into patchwork")
