YueHaibing 4c21daae3d tipc: Fix NULL pointer dereference in __tipc_sendstream()
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+8eac6d030e7807c21d32@syzkaller.appspotmail.com
Fixes: 0a3e060f340d ("tipc: add test for Nagle algorithm effectiveness")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-01 15:33:24 -07:00
..
2018-03-23 13:12:18 -04:00
2018-08-29 18:04:54 -07:00