From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Sat, 21 Apr 2012 14:51:41 +0000 Subject: Re: [patch] wireless: at76c50x: allocating too much data Message-Id: <20120421145140.GU6498@mwanda> List-Id: References: <20120420064705.GE22649@elgon.mountain> <20120420091449.GI27101@mwanda> <87vcku9sob.fsf@purkki.adurom.net> <20120421124523.GS6498@mwanda> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Julia Lawall Cc: Kalle Valo , Julian Calaby , "John W. Linville" , linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org On Sat, Apr 21, 2012 at 03:51:44PM +0200, Julia Lawall wrote: > Looking for x = ... sizeof(x) ... I get 9 reports. In most cases it > looks like sizeof(x) is coincidentally the same as the size that is > wanted. Two cases that look like they could have some noticible > effect are: > > arch/xtensa/platforms/iss/network.c, line 789 > drivers/block/cciss.c, line 4211 > Clever. You'd need to restrict it to places where x was a pointer. That's better than my check which was specific to kmalloc(). (So uh... I'm going to rewrite mine as well to be more generic. :P) regards, dan carpenter