From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752810AbbJRFK6 (ORCPT ); Sun, 18 Oct 2015 01:10:58 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:45832 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752676AbbJRFK4 (ORCPT ); Sun, 18 Oct 2015 01:10:56 -0400 Date: Sat, 17 Oct 2015 22:10:56 -0700 From: Greg Kroah-Hartman To: Rohit Vaswani Cc: Andrew Morton , Marek Szyprowski , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation Message-ID: <20151018051056.GB20643@kroah.com> References: <1444854232-4085-1-git-send-email-rvaswani@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1444854232-4085-1-git-send-email-rvaswani@codeaurora.org> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 14, 2015 at 01:23:51PM -0700, Rohit Vaswani wrote: > This was found during userspace fuzzing test when a large size > dma cma allocation is made by driver(like ion) through userspace. > > show_stack+0x10/0x1c > dump_stack+0x74/0xc8 > kasan_report_error+0x2b0/0x408 > kasan_report+0x34/0x40 > __asan_storeN+0x15c/0x168 > memset+0x20/0x44 > __dma_alloc_coherent+0x114/0x18c > > Signed-off-by: Rohit Vaswani Acked-by: Greg Kroah-Hartman