mwifiex: fix NULL pointer dereference during hidden SSID scan
authorAniket Nagarnaik <aniketn@marvell.com>
Fri, 18 Sep 2015 13:32:09 +0000 (06:32 -0700)
committerKalle Valo <kvalo@codeaurora.org>
Tue, 29 Sep 2015 07:47:36 +0000 (10:47 +0300)
commit17e524b1b60f4390d24a51d9524d1648cf5d1447
tree2f866799c487cca1c11168e88d69c7c566d3eaed
parent2c3da961268ff7f4a6c958fee081c58aef2e5c1d
mwifiex: fix NULL pointer dereference during hidden SSID scan

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@vger.kernel.org> [v4.2+]
Signed-off-by: Aniket Nagarnaik <aniketn@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/mwifiex/scan.c