From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: [PATCH 4/4] compress: fix arithmetic exception in compress_get_hpointer Date: Mon, 18 Feb 2013 19:45:15 +0530 Message-ID: <1361196915-12121-4-git-send-email-vinod.koul@intel.com> References: <1361196915-12121-1-git-send-email-vinod.koul@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by alsa0.perex.cz (Postfix) with ESMTP id B1679265099 for ; Mon, 18 Feb 2013 15:16:05 +0100 (CET) In-Reply-To: <1361196915-12121-1-git-send-email-vinod.koul@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org Cc: Vinod Koul , Xuemin Su , He Bo List-Id: alsa-devel@alsa-project.org From: Xuemin Su In compress_get_hpointer, check for invalid sample rate to prevent devide-by-zero exceptions Signed-off-by: Xuemin Su Signed-off-by: He Bo Signed-off-by: Vinod Koul --- compress.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/compress.c b/compress.c index b035e4a..27c03d9 100644 --- a/compress.c +++ b/compress.c @@ -286,6 +286,8 @@ int compress_get_hpointer(struct compress *compress, if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &kavail)) return oops(compress, errno, "cannot get avail"); + if (0 == kavail.tstamp.sampling_rate) + return oops(compress, errno, "invalid paramter"); *avail = (unsigned int)kavail.avail; time = kavail.tstamp.pcm_io_frames / kavail.tstamp.sampling_rate; tstamp->tv_sec = time; -- 1.7.0.4