From: YueHaibing <yuehaib...@huawei.com>
Date: Thu, 28 May 2020 22:34:07 +0800
> tipc_sendstream() may send zero length packet, then tipc_msg_append()
> do not alloc skb, skb_peek_tail() will get NULL, msg_set_ack_required
> will trigger NULL pointer dereference.
>
> Reported-by: syzbot+8eac6d030e7807c21...@syzkaller.appspotmail.com
> Fixes: 0a3e060f340d ("tipc: add test for Nagle algorithm effectiveness")
> Signed-off-by: YueHaibing <yuehaib...@huawei.com>
I spent some time reading this a few times and the Fixes: commit and
this change looks ok to me so I'm just going to apply this.
Thanks.
