From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id 1FBCC6B025E for ; Wed, 18 Oct 2017 07:16:56 -0400 (EDT) Received: by mail-wr0-f199.google.com with SMTP id z99so530320wrc.15 for ; Wed, 18 Oct 2017 04:16:56 -0700 (PDT) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id a134si8527367wmd.9.2017.10.18.04.16.54 for (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 18 Oct 2017 04:16:54 -0700 (PDT) Subject: Re: KASAN: use-after-free Read in do_get_mempolicy References: From: Vlastimil Babka Message-ID: Date: Wed, 18 Oct 2017 13:16:52 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Dmitry Vyukov , Chase Bertke Cc: LKML , syzkaller , Andrew Morton , Michal Hocko , David Rientjes , "linux-mm@kvack.org" On 10/17/2017 05:55 PM, Dmitry Vyukov wrote: > On Tue, Oct 17, 2017 at 5:38 PM, Chase Bertke wrote: >> Hello, >> >> I would like to report a bug found via syzkaller on version 4.13.0-rc4. I >> have searched the syzkaller mailing list and did not see any other reports >> for this bug. >> >> Please see below: >> >> ================================================================== >> BUG: KASAN: use-after-free in do_get_mempolicy+0x1d4/0x740 >> Read of size 8 at addr ffff88006d32fb28 by task syz-executor0/1422 >> >> CPU: 0 PID: 1422 Comm: syz-executor0 Not tainted 4.13.0-rc4+ #0 Most likely already fixed by 73223e4e2e38 ("mm/mempolicy: fix use after free when calling get_mempolicy") which landed in v4.13-rc6. Please focus the fuzzing the latest 4.14-rcX instead :) Vlastimil -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org