lkml.org 
[lkml]   [2014]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3.4 47/91] iscsi-target: Fix memory corruption in iscsit_logout_post_handler_diffcid
Date
From: Nicholas Bellinger <nab@linux-iscsi.org>

3.4.105-rc1 review patch. If anyone has any objections, please let me know.

------------------


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: Zefan Li <lizefan@huawei.com>
---
drivers/target/iscsi/iscsi_target.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index d7ac2c0..56d02e0 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4297,6 +4297,7 @@ static void iscsit_logout_post_handler_diffcid(
{
struct iscsi_conn *l_conn;
struct iscsi_session *sess = conn->sess;
+ bool conn_found = false;

if (!sess)
return;
@@ -4305,12 +4306,13 @@ static void iscsit_logout_post_handler_diffcid(
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)
--
1.9.1


\
 
 \ /
  Last update: 2014-11-27 10:41    [W:0.240 / U:1.812 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site