From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
This patch fixes an oops in several failure paths in key allocation. This
Oops occurs when freeing a key that has not been linked yet, so the
key->sdata is not set.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
net/mac80211/key.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index d4893bd..6597c77 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -387,6 +387,15 @@ void ieee80211_key_free(struct ieee80211_key *key)
if (!key)
return;
+ if (!key->sdata) {
+ /* The key has not been linked yet, simply free it
+ * and don't Oops */
+ if (key->conf.alg == ALG_CCMP)
+ ieee80211_aes_key_free(key->u.ccmp.tfm);
+ kfree(key);
+ return;
+ }
+
spin_lock_irqsave(&key->sdata->local->key_lock, flags);
__ieee80211_key_free(key);
spin_unlock_irqrestore(&key->sdata->local->key_lock, flags);
--
1.5.4.1
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