diff mbox series

[net-next,v4,3/3] net: mac80211: check return value of rhashtable_init

Message ID 20210927033457.1020967-4-shjy180909@gmail.com (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series check return value of rhashtable_init in mlx5e, ipv6, mac80211 | expand

Commit Message

MichelleJin Sept. 27, 2021, 3:34 a.m. UTC
When rhashtable_init() fails, it returns -EINVAL.
However, since error return value of rhashtable_init is not checked,
it can cause use of uninitialized pointers.
So, fix unhandled errors of rhashtable_init.

Signed-off-by: MichelleJin <shjy180909@gmail.com>
---

v1->v2:
 - change commit message
 - fix possible memory leaks
v2->v3:
 - nothing changed
v3-> v4:
 - nothing changed

 net/mac80211/mesh_pathtbl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index efbefcbac3ac..7cab1cf09bf1 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -60,7 +60,10 @@  static struct mesh_table *mesh_table_alloc(void)
 	atomic_set(&newtbl->entries,  0);
 	spin_lock_init(&newtbl->gates_lock);
 	spin_lock_init(&newtbl->walk_lock);
-	rhashtable_init(&newtbl->rhead, &mesh_rht_params);
+	if (rhashtable_init(&newtbl->rhead, &mesh_rht_params)) {
+		kfree(newtbl);
+		return NULL;
+	}
 
 	return newtbl;
 }