diff options
| author | Jouni Malinen <j@w1.fi> | 2008-10-11 03:29:55 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-10-14 21:08:11 -0400 |
| commit | d048e503a2b01e771ee87921c24d89d7ec3f0c2f (patch) | |
| tree | 71df617d24f8ba4cc349b3588e9ee87a5b891b7a /net/mac80211/scan.c | |
| parent | c25bab54fe30d26a2cddf7058d77da72be630b23 (diff) | |
| download | lwn-d048e503a2b01e771ee87921c24d89d7ec3f0c2f.tar.gz lwn-d048e503a2b01e771ee87921c24d89d7ec3f0c2f.zip | |
mac80211: Fix scan RX processing oops
ieee80211_bss_info_update() can return NULL. Verify that this is not the
case before calling ieee802111_rx_bss_put() which would trigger an oops
in interrupt context in atomic_dec_and_lock().
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benoit Papillault <benoit.papillault@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/scan.c')
| -rw-r--r-- | net/mac80211/scan.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 8e6685e7ae85..416bb41099f3 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -388,7 +388,8 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, bss = ieee80211_bss_info_update(sdata->local, rx_status, mgmt, skb->len, &elems, freq, beacon); - ieee80211_rx_bss_put(sdata->local, bss); + if (bss) + ieee80211_rx_bss_put(sdata->local, bss); dev_kfree_skb(skb); return RX_QUEUED; |