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mac80211: fix possible NULL pointer dereference

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This patch moves 'key' dereference after BUG_ON(!key) so that when key is NULL
we will see proper trace instead of oops.

Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mariusz Kozlowski 2011-03-26 18:58:51 +01:00 committed by John W. Linville
parent 1f951a7f8b
commit 67aa030c0d
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/key.c
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@ -400,11 +400,12 @@ int ieee80211_key_link(struct ieee80211_key *key,
{
struct ieee80211_key *old_key;
int idx, ret;
bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
bool pairwise;
BUG_ON(!sdata);
BUG_ON(!key);
pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
idx = key->conf.keyidx;
key->local = sdata->local;
key->sdata = sdata;