From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f69.google.com (mail-pl0-f69.google.com [209.85.160.69]) by kanga.kvack.org (Postfix) with ESMTP id 1DF026B02EA for ; Mon, 9 Jul 2018 10:36:13 -0400 (EDT) Received: by mail-pl0-f69.google.com with SMTP id p91-v6so10173009plb.12 for ; Mon, 09 Jul 2018 07:36:13 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id p3-v6si14583716plr.131.2018.07.09.07.36.11 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 09 Jul 2018 07:36:11 -0700 (PDT) Date: Mon, 9 Jul 2018 07:36:10 -0700 From: Matthew Wilcox Subject: Re: kernel BUG at mm/shmem.c:LINE! Message-ID: <20180709143610.GD2662@bombadil.infradead.org> References: <000000000000d624c605705e9010@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000d624c605705e9010@google.com> Sender: owner-linux-mm@kvack.org List-ID: To: syzbot Cc: hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com On Fri, Jul 06, 2018 at 06:19:02PM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 526674536360 Add linux-next specific files for 20180706 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=116d16fc400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c8d1cfc0cb798e48 > dashboard link: https://syzkaller.appspot.com/bug?extid=b8e0dfee3fd8c9012771 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=170e462c400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f1ba2c400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+b8e0dfee3fd8c9012771@syzkaller.appspotmail.com #syz fix: shmem: Convert shmem_add_to_page_cache to XArray