diff options
| author | Luis R. Rodriguez <lrodriguez@atheros.com> | 2009-07-24 19:57:25 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-27 15:24:19 -0400 |
| commit | 21f5fc75deca63bc41c9d13007d35981d4485622 (patch) | |
| tree | 13b451930a6ff36ae651e52e5c359ea4387a7ea4 | |
| parent | ac88b6ecdfa629fd1261dab1504d78a56fd4cabf (diff) | |
mac80211: fix oops due to missing private data
This was caused by patch:
"mac80211: cooperate more with network namespaces"
The version of the patch applied doesn't match Johannes' latest:
http://johannes.sipsolutions.net/patches/kernel/all/LATEST/NNN-mac80211-netns.patch
The skb->cb virtual interface data wasn't being reset for
reuse so ath9k pooped out when trying to dereference the
private rate control info from the skb.
BUG: unable to handle kernel NULL pointer dereference
RIP: 0010:[<ffffffffa0258173>] ath_tx_rc_status+0x33/0x150 [ath9k]
<-- snip etc -->
Reported-by: Davide Pesavento <davidepesa@gmail.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | net/mac80211/tx.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index edacad1fb1dc..9e5dff1c8f27 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1170,13 +1170,15 @@ static int __ieee80211_tx(struct ieee80211_local *local, } ret = drv_tx(local, skb); - info->control.vif = &sdata->vif; if (WARN_ON(ret != NETDEV_TX_OK && skb->len != len)) { dev_kfree_skb(skb); ret = NETDEV_TX_OK; } - if (ret != NETDEV_TX_OK) + if (ret != NETDEV_TX_OK) { + info->control.vif = &sdata->vif; return IEEE80211_TX_AGAIN; + } + *skbp = skb = next; ieee80211_led_tx(local, 1); fragm = true; |