syzbot has bisected this issue to:

commit de4f5fed3f231a8ff4790bf52975f847b95b85ea
Author: Jens Axboe [off-list ref]
Date:   Wed Mar 29 14:52:15 2023 +0000

    iov_iter: add iter_iovec() helper

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17424730580000
start commit:   96b6fcc0ee41 Merge branch 'net-dsa-cleanup-eee-part-1'
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14c24730580000
console output: https://syzkaller.appspot.com/x/log.txt?x=10c24730580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1362a5aee630ff34
dashboard link: https://syzkaller.appspot.com/bug?extid=4f66250f6663c0c1d67e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=166944f8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1287ecdf980000

Reported-by: syzbot+4f66250f6663c0c1d67e@syzkaller.appspotmail.com
Fixes: de4f5fed3f23 ("iov_iter: add iter_iovec() helper")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection