From 535f2e7df820d84fd8a4395bb52f19846f6a2290 Mon Sep 17 00:00:00 2001 From: Rickard Strandqvist Date: Sat, 7 Feb 2015 15:56:10 +0100 Subject: [PATCH] staging: rtl8192u: r8192U_core: Fix driver_info dereference as a null pointer Fix possible use of use of driver_info as a null pointer in query_rxdesc_status() This could happen if stats->RxIs40MHzPacket still has the default value of zero. Signed-off-by: Rickard Strandqvist Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8192u/r8192U_core.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c index 0d64d2dfd38c..8f7a3219eff1 100644 --- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -4476,13 +4476,10 @@ static void query_rxdesc_status(struct sk_buff *skb, skb_pull(skb, stats->RxBufShift + stats->RxDrvInfoSize); } - /* for debug 2008.5.29 */ - - //added by vivi, for MP, 20080108 - stats->RxIs40MHzPacket = driver_info->BW; - if (stats->RxDrvInfoSize != 0) + if (driver_info) { + stats->RxIs40MHzPacket = driver_info->BW; TranslateRxSignalStuff819xUsb(skb, stats, driver_info); - + } } static void rtl8192_rx_nomal(struct sk_buff *skb) -- 2.30.2