| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 089/143] iscsi-target: Fix memory corruption in iscsit_logout_post_handler_diffcid | Date | Fri, 3 Oct 2014 14:34:44 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Nicholas Bellinger <nab@linux-iscsi.org>
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 <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -4453,6 +4453,7 @@ 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; @@ -4461,12 +4462,13 @@ 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)
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