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mac80211: fix an oops in several failure paths in key allocation 

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@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2008-06-26 12:13:46 +03:00 committed by John W. Linville
parent 5f4a6fae46
commit 00eb7fe77e
1 changed files with 9 additions and 0 deletions
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9
net/mac80211/key.c
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@ -380,6 +380,15 @@ 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);