From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Magenheimer Date: Thu, 06 Sep 2012 16:32:54 +0000 Subject: RE: [patch] staging: ramster: fix range checks in zcache_autocreate_pool() Message-Id: List-Id: References: <20120906124020.GA28946@elgon.mountain> <20120906162515.GA423@kroah.com> In-Reply-To: <20120906162515.GA423@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Greg Kroah-Hartman , Dan Carpenter Cc: devel@driverdev.osuosl.org, linux-mm@kvack.org, kernel-janitors@vger.kernel.org, Konrad Wilk > From: Greg Kroah-Hartman [mailto:gregkh@linuxfoundation.org] > Subject: Re: [patch] staging: ramster: fix range checks in zcache_autocreate_pool() > > On Thu, Sep 06, 2012 at 03:40:20PM +0300, Dan Carpenter wrote: > > If "pool_id" is negative then it leads to a read before the start of the > > array. If "cli_id" is out of bounds then it leads to a NULL dereference > > of "cli". GCC would have warned about that bug except that we > > initialized the warning message away. > > > > Also it's better to put the parameter names into the function > > declaration in the .h file. It serves as a kind of documentation. > > > > Signed-off-by: Dan Carpenter > > --- > > BTW, This file has a ton of GCC warnings. This function returns -1 > > on error which is a nonsense return code but the return value is not > > checked anyway. *Grumble*. > > I agree, it's very messy. Dan Magenheimer should have known better, and > he better be sending me a patch soon to remove these warnings (hint...) On its way soon. Dan