syzbot has bisected this issue to:
commit a8b76910e465d718effce0cad306a21fa4f3526b
Author: Valentin Schneider <valentin.schneider@xxxxxxx>
Date: Wed Nov 10 20:24:44 2021 +0000
preempt: Restore preemption model selection configs
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1633aaf0680000
start commit: 58390c8ce1bd Merge tag 'iommu-updates-v6.4' of git://git.k..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=1533aaf0680000
console output: https://syzkaller.appspot.com/x/log.txt?x=1133aaf0680000
kernel config: https://syzkaller.appspot.com/x/.config?x=5eadbf0d3c2ece89
dashboard link: https://syzkaller.appspot.com/bug?extid=427fed3295e9a7e887f2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=172bead8280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d01d08280000
Reported-by: syzbot+427fed3295e9a7e887f2@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a8b76910e465 ("preempt: Restore preemption model selection configs")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
