From: Aniket Nagarnaik <aniketn@xxxxxxxxxxx>
This NULL pointer dereference is observed during suspend resume
stress test. All pending commands are cancelled when system goes
into suspend state. There a corner case in which host may receive
response for last scan command after this and try to trigger extra
active scan for hidden SSIDs.
The issue is fixed by adding a NULL check to skip that extra scan.
Fixes: 2375fa2b36feaf34 (mwifiex: fix unable to connect hidden SSID..)
Cc: <stable@xxxxxxxxxxxxxxx> [v4.2+]
Signed-off-by: Aniket Nagarnaik <aniketn@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index 3675730..c20017c 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1893,7 +1893,7 @@ mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv)
u8 id = 0;
struct mwifiex_user_scan_cfg *user_scan_cfg;
- if (adapter->active_scan_triggered) {
+ if (adapter->active_scan_triggered || !priv->scan_request) {
adapter->active_scan_triggered = false;
return 0;
}
--
1.8.1.4
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