linux-kernel - [PATCH 3.12 030/181] dlm: keep listening connection alive with sctp mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 30 Jun 2014 13:50:51 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Lidong Zhong <lzhong@...e.com>,
	David Teigland <teigland@...hat.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 030/181] dlm: keep listening connection alive with sctp mode

From: Lidong Zhong <lzhong@...e.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 883854c5457a97190f7b0ee20f03bcd9664fc0c2 upstream.

The connection struct with nodeid 0 is the listening socket,
not a connection to another node.  The sctp resend function
was not checking that the nodeid was valid (non-zero), so it
would mistakenly get and resend on the listening connection
when nodeid was zero.

Signed-off-by: Lidong Zhong <lzhong@...e.com>
Signed-off-by: David Teigland <teigland@...hat.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 fs/dlm/lowcomms.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index a5e34dd6a32c..1381d3fb3738 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -617,6 +617,11 @@ static void retry_failed_sctp_send(struct connection *recv_con,
 	int nodeid = sn_send_failed->ssf_info.sinfo_ppid;
 
 	log_print("Retry sending %d bytes to node id %d", len, nodeid);
+	
+	if (!nodeid) {
+		log_print("Shouldn't resend data via listening connection.");
+		return;
+	}
 
 	con = nodeid2con(nodeid, 0);
 	if (!con) {
-- 
2.0.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/