From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Joern Engel , Nicholas Bellinger Subject: [PATCH 3.14 149/238] iscsi-target: Fix memory corruption in iscsit_logout_post_handler_diffcid Date: Fri, 3 Oct 2014 14:31:04 -0700 Message-Id: <20141003212918.446730880@linuxfoundation.org> In-Reply-To: <20141003212913.680985295@linuxfoundation.org> References: <20141003212913.680985295@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicholas Bellinger commit b53b0d99d6fbf7d44330395349a895521cfdbc96 upstream. This patch fixes a bug in iscsit_logout_post_handler_diffcid() where a pointer used as storage for list_for_each_entry() was incorrectly being used to determine if no matching entry had been found. This patch changes iscsit_logout_post_handler_diffcid() to key off bool conn_found to determine if the function needs to exit early. Reported-by: Joern Engel Signed-off-by: Nicholas Bellinger Signed-off-by: Greg Kroah-Hartman --- drivers/target/iscsi/iscsi_target.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -4513,6 +4513,7 @@ static void iscsit_logout_post_handler_d { struct iscsi_conn *l_conn; struct iscsi_session *sess = conn->sess; + bool conn_found = false; if (!sess) return; @@ -4521,12 +4522,13 @@ static void iscsit_logout_post_handler_d list_for_each_entry(l_conn, &sess->sess_conn_list, conn_list) { if (l_conn->cid == cid) { iscsit_inc_conn_usage_count(l_conn); + conn_found = true; break; } } spin_unlock_bh(&sess->conn_lock); - if (!l_conn) + if (!conn_found) return; if (l_conn->sock)