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Date: Mon, 01 Jun 2020 11:34:13 -0700 (PDT) From: David Miller <davem@...emloft.net> To: yuehaibing@...wei.com Cc: jmaloy@...hat.com, ying.xue@...driver.com, kuba@...nel.org, tuong.t.lien@...tech.com.au, netdev@...r.kernel.org, tipc-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: Re: [PATCH net-next] tipc: Fix NULL pointer dereference in __tipc_sendstream() From: YueHaibing <yuehaibing@...wei.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+8eac6d030e7807c21d32@...kaller.appspotmail.com > Fixes: 0a3e060f340d ("tipc: add test for Nagle algorithm effectiveness") > Signed-off-by: YueHaibing <yuehaibing@...wei.com> Can a TIPC expert please review this? Thank you.
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