From: Aniket Nagarnaik <[email protected]> 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: <[email protected]> [v4.2+] Signed-off-by: Aniket Nagarnaik <[email protected]> Signed-off-by: Amitkumar Karwar <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
