1 files changed, 5 insertions, 1 deletions

diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index 4aa47d074a79..1243d1db5c59 100644
--- a/net/mac80211/debugfs_key.c
+++ b/net/mac80211/debugfs_key.c
@@ -203,9 +203,13 @@ static ssize_t key_key_read(struct file *file, char __user *userbuf,
                             size_t count, loff_t *ppos)
 {
         struct ieee80211_key *key = file->private_data;
-        int i, res, bufsize = 2 * key->conf.keylen + 2;
+        int i, bufsize = 2 * key->conf.keylen + 2;
         char *buf = kmalloc(bufsize, GFP_KERNEL);
         char *p = buf;
+        ssize_t res;
+
+        if (!buf)
+                return -ENOMEM;
 
         for (i = 0; i < key->conf.keylen; i++)
                 p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);