syzbot has bisected this issue to:
commit 1592c4b9935fa8a3b7c297955bb872a357e5a3b6
Author: Linhua Xu <linhua.xu@xxxxxxxxxx>
Date: Wed Mar 25 08:25:28 2020 +0000
pinctrl: sprd: Add pin high impedance mode support
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=111050d3900000
start commit: 325d0eab Merge branch 'akpm' (patches from Andrew)
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=131050d3900000
console output: https://syzkaller.appspot.com/x/log.txt?x=151050d3900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b12e84189082991c
dashboard link: https://syzkaller.appspot.com/bug?extid=690cb1e51970435f9775
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15705a3d900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117b3281900000
Reported-by: syzbot+690cb1e51970435f9775@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 1592c4b9935f ("pinctrl: sprd: Add pin high impedance mode support")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
