syzbot suspects this issue was fixed by commit:
commit f123cffdd8fe8ea6c7fded4b88516a42798797d0
Author: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx>
Date: Mon Nov 29 17:53:27 2021 +0000
net: netlink: af_netlink: Prevent empty skb by adding a check on len.
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=107b5472700000
start commit: cd02217a5d81 Merge tag 'for-linus' of git://git.kernel.org..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11
dashboard link: https://syzkaller.appspot.com/bug?extid=b3b5c64f4880403edd36
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116f8172900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1145d1b1900000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: net: netlink: af_netlink: Prevent empty skb by adding a check on len.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
