syzbot has bisected this issue to:
commit 5106f4a8acff480e244300bc5097c0ad7048c3a2
Author: Dmitry Safonov <dima@xxxxxxxxxx>
Date: Mon Sep 21 14:36:55 2020 +0000
xfrm/compat: Add 32=>64-bit messages translator
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16cefa8a500000
start commit: 3cea11cd Linux 5.10-rc2
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=15cefa8a500000
console output: https://syzkaller.appspot.com/x/log.txt?x=11cefa8a500000
kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
dashboard link: https://syzkaller.appspot.com/bug?extid=c43831072e7df506a646
userspace arch: i386
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1388676c500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=158f642c500000
Reported-by: syzbot+c43831072e7df506a646@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 5106f4a8acff ("xfrm/compat: Add 32=>64-bit messages translator")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
