netdev - [patch] vxge: potential NULL dereference

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Message-ID: <20100910115423.GC5959@bicker>
Date:	Fri, 10 Sep 2010 13:54:23 +0200
From:	Dan Carpenter <error27@...il.com>
To:	Ramkrishna Vepa <ramkrishna.vepa@...r.com>
Cc:	Sivakumar Subramani <sivakumar.subramani@...r.com>,
	Sreenivasa Honnur <sreenivasa.honnur@...r.com>,
	Jon Mason <jon.mason@...r.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] vxge: potential NULL dereference

At the start of the function we test whether the "vpath" is NULL but we
need another test here as well.

Signed-off-by: Dan Carpenter <error27@...il.com>
---
This is a static checker bug, I'm not sure if we ever pass a NULL
pointer for "vpath".

diff --git a/drivers/net/vxge/vxge-traffic.c b/drivers/net/vxge/vxge-traffic.c
index cedf08f..1790748 100644
--- a/drivers/net/vxge/vxge-traffic.c
+++ b/drivers/net/vxge/vxge-traffic.c
@@ -2157,7 +2157,8 @@ out2:
 		(alarm_event == VXGE_HW_EVENT_UNKNOWN))
 		return VXGE_HW_OK;
 
-	__vxge_hw_device_handle_error(hldev, vpath->vp_id, alarm_event);
+	if (vpath)
+		__vxge_hw_device_handle_error(hldev, vpath->vp_id, alarm_event);
 
 	if (alarm_event == VXGE_HW_EVENT_SERR)
 		return VXGE_HW_ERR_CRITICAL;
--
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