From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kalle Valo Date: Tue, 29 Sep 2015 08:09:08 +0000 Subject: Re: [v2] mwifiex: fix mwifiex_rdeeprom_read() Message-Id: <20150929080908.CC1F813F7C4@smtp.codeaurora.org> List-Id: In-Reply-To: <20150921161953.GQ5004@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter Cc: Amitkumar Karwar , Nishant Sarmukadam , linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org > There were several bugs here. > > 1) The done label was in the wrong place so we didn't copy any > information out when there was no command given. > > 2) We were using PAGE_SIZE as the size of the buffer instead of > "PAGE_SIZE - pos". > > 3) snprintf() returns the number of characters that would have been > printed if there were enough space. If there was not enough space > (and we had fixed the memory corruption bug #2) then it would result > in an information leak when we do simple_read_from_buffer(). I've > changed it to use scnprintf() instead. > > I also removed the initialization at the start of the function, because > I thought it made the code a little more clear. > > Fixes: 5e6e3a92b9a4 ('wireless: mwifiex: initial commit for Marvell mwifiex driver') > Signed-off-by: Dan Carpenter > Acked-by: Amitkumar Karwar Thanks, applied to wireless-drivers-next.git. Kalle Valo