From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arend van Spriel Date: Fri, 06 Apr 2018 08:45:00 +0000 Subject: Re: [PATCH v2] rsi: remove unecessary PTR_ALIGN()s Message-Id: <5AC7338C.3000307@broadcom.com> List-Id: References: <20180406083717.GA21857@mwanda> In-Reply-To: <20180406083717.GA21857@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter , Kalle Valo Cc: Amitkumar Karwar , Prameela Rani Garnepudi , Karun Eagalapati , Siva Rebbagondla , linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org On 4/6/2018 10:37 AM, Dan Carpenter wrote: > The issue here is that we allocate "data" and then set > "data = PTR_ALIGN(data, 8);" and then we free the aligned pointer > instead of the original pointer. > > kmalloc() pointers are already ARCH_SLAB_MINALIGN aligned which is 8 or > more on everything except certain Xtensa variants. We decided that if > the Xtensa people ever notice a bug here then we'll tell them the bug is > on their side. ;) I am not sure if it was decided to be a xtensa bug, but just to ignore the issue until it would arise. Anyway, not sure if the last sentence is useful in the commit message. Regards, Arend