From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4528EC6778A for ; Mon, 9 Jul 2018 14:36:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E26372086A for ; Mon, 9 Jul 2018 14:36:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="FDLxTc3F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E26372086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933077AbeGIOgM (ORCPT ); Mon, 9 Jul 2018 10:36:12 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:58538 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932633AbeGIOgL (ORCPT ); Mon, 9 Jul 2018 10:36:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=do65+p/1fwKe/HUlk44JmPxnFidFLJM3iwwMNZoCfDc=; b=FDLxTc3FRzszE3tHxEjpVzdJV 2eKLlUgx/tLtsbR0tCKDEkHI31oBNVKY0hd8zuB+W3bUz4h0NmdmIaIWP++Or82xdKYGED8FB/+YT bOmx4xXXQZPkcjmMJPrTA7t4GP45Ij8QLkWmUgfaftui4+nqk9lwE7ASPWmDfnKSxjK3sPfwVXqrC UzIZWeyFu/b12Gv0tqGYoVMj4nEL7yp1FIFnT85pudSSaFtSLEW8F/uQeINaWyzWxdrc/M7Eh3JEJ vq7g1MKU9VN/kQXHuLK9SY4U464BWUt/e7Y90BSA1YCk4xWxZ7ld0ttiZC6lqmKryizwsMWNWAOc7 Ay2weGF/Q==; Received: from willy by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1fcXGs-00057E-7I; Mon, 09 Jul 2018 14:36:10 +0000 Date: Mon, 9 Jul 2018 07:36:10 -0700 From: Matthew Wilcox To: syzbot Cc: hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com 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> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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