linux-kernel - [Patch] Dereference in drivers/usb/misc/adutux.c

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Date:	Thu, 05 Oct 2006 12:01:29 +0200
From:	Eric Sesterhenn <snakebyte@....de>
To:	linux-kernel@...r.kernel.org
Cc:	netwiz@....id.au
Subject: [Patch] Dereference in drivers/usb/misc/adutux.c

hi,

in two of the error cases, dev is still NULL,
and we dereference it. Spotted by coverity (cid#1428, 1429)

Signed-off-by: Eric Sesterhenn <snakebyte@....de>

--- linux-2.6.19-rc1/drivers/usb/misc/adutux.c.orig	2006-10-05 11:57:52.000000000 +0200
+++ linux-2.6.19-rc1/drivers/usb/misc/adutux.c	2006-10-05 11:58:19.000000000 +0200
@@ -370,7 +370,8 @@ static int adu_release(struct inode *ino
 	retval = adu_release_internal(dev);
 
 exit:
-	up(&dev->sem);
+	if(dev)
+		up(&dev->sem);
 	dbg(2," %s : leave, return value %d", __FUNCTION__, retval);
 	return retval;
 }


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