From: Roland Vossen <rvossen@xxxxxxxxxxxx>
Mac80211 can transmit packets where the control.sta field is NULL.
The driver dereferenced this. Bugfix was to only dereference a non NULL
ieee80211_sta pointer.
Signed-off-by: Roland Vossen <rvossen@xxxxxxxxxxxx>
Reviewed-by: Arend van Spriel <arend@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/staging/brcm80211/brcmsmac/wlc_main.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/staging/brcm80211/brcmsmac/wlc_main.c b/drivers/staging/brcm80211/brcmsmac/wlc_main.c
index cb1e142..8bee149 100644
--- a/drivers/staging/brcm80211/brcmsmac/wlc_main.c
+++ b/drivers/staging/brcm80211/brcmsmac/wlc_main.c
@@ -6613,7 +6613,8 @@ wlc_dotxstatus(struct wlc_info *wlc, tx_status_t *txs, u32 frm_tx2)
tx_info = IEEE80211_SKB_CB(p);
h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
- scb = (struct scb *)tx_info->control.sta->drv_priv;
+ if (tx_info->control.sta)
+ scb = (struct scb *)tx_info->control.sta->drv_priv;
if (N_ENAB(wlc->pub)) {
u8 *plcp = (u8 *) (txh + 1);
--
1.7.4.1
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