dlm: fix possible call to kfree() for non-initialized pointer

[ Upstream commit 58a923adf4d9aca8bf7205985c9c8fc531c65d72 ]

Technically dlm_config_nodes() could return error and keep nodes
uninitialized. After that on the fail path of we'll call kfree()
for that uninitialized value.

The patch is simple - we should just initialize nodes with NULL.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index cad6d85911a8021d616acacebb386f44215f44bb..0bc43b35d2c53c66453fd84236812a4fa3439f1f 100644 (file)
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -671,7 +671,7 @@ int dlm_ls_stop(struct dlm_ls *ls)
 int dlm_ls_start(struct dlm_ls *ls)
 {
        struct dlm_recover *rv, *rv_old;
-       struct dlm_config_node *nodes;
+       struct dlm_config_node *nodes = NULL;
        int error, count;
 
        rv = kzalloc(sizeof(*rv), GFP_NOFS);