From: Kalle Valo Date: Sun, 28 Aug 2005 19:46:57 +0000 (+0300) Subject: [PATCH] hostap: Fix null pointer dereference in prism2_pccard_card_present() X-Git-Tag: v2.6.14-rc1~1017^2~2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a8eef8a22232e64be76410100c52038b21bda7ed;p=linux-2.6 [PATCH] hostap: Fix null pointer dereference in prism2_pccard_card_present() With my Buffalo WLI-CF-S11G PC Card kernel oopses every time in prism2_interrupt() when I try load the hostap module. local->hw_priv is null during the first call to prism2_interrupt(). It feels like interrupts are enabled too early, or something. This patch fixes the symptom, but not the cause. Signed-off-by: Kalle Valo Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/wireless/hostap/hostap_cs.c b/drivers/net/wireless/hostap/hostap_cs.c index 491cf49042..e1f1eb8e48 100644 --- a/drivers/net/wireless/hostap/hostap_cs.c +++ b/drivers/net/wireless/hostap/hostap_cs.c @@ -212,7 +212,7 @@ static int prism2_event(event_t event, int priority, static int prism2_pccard_card_present(local_info_t *local) { struct hostap_cs_priv *hw_priv = local->hw_priv; - if (hw_priv->link != NULL && + if (hw_priv != NULL && hw_priv->link != NULL && ((hw_priv->link->state & (DEV_PRESENT | DEV_CONFIG)) == (DEV_PRESENT | DEV_CONFIG))) return 1;