mac80211: fix failure to check kmalloc return value in key_key_read

[cascardo/linux.git] / net / mac80211 / debugfs_key.c

diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index 4aa47d0..1243d1d 100644 (file)
--- 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]);