Re: [syzbot] UBSAN: shift-out-of-bounds in xfrm_get_default

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+b2be9dd8ca6f6c73ee2d@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         9e9fb765 Merge tag 'net-next-5.15' of git://git.kernel..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git master
kernel config:  https://syzkaller.appspot.com/x/.config?x=bd61edfef9fa14b1
dashboard link: https://syzkaller.appspot.com/bug?extid=b2be9dd8ca6f6c73ee2d
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
patch:          https://syzkaller.appspot.com/x/patch.diff?x=12546ba9300000

Note: testing is done by a robot and is best-effort only.