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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 34690C433DF for ; Wed, 10 Jun 2020 21:10:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 08A4D2072E for ; Wed, 10 Jun 2020 21:10:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08A4D2072E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9F5478D004A; Wed, 10 Jun 2020 17:10:31 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9A5B28D0033; Wed, 10 Jun 2020 17:10:31 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8BAF38D004A; Wed, 10 Jun 2020 17:10:31 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0233.hostedemail.com [216.40.44.233]) by kanga.kvack.org (Postfix) with ESMTP id 70B988D0033 for ; Wed, 10 Jun 2020 17:10:31 -0400 (EDT) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 33991180AEF50 for ; Wed, 10 Jun 2020 21:10:31 +0000 (UTC) X-FDA: 76914545862.24.lift24_2a0694626dce Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin24.hostedemail.com (Postfix) with ESMTP id 020FBD4618 for ; Wed, 10 Jun 2020 21:10:30 +0000 (UTC) X-HE-Tag: lift24_2a0694626dce X-Filterd-Recvd-Size: 1510 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Wed, 10 Jun 2020 21:10:30 +0000 (UTC) Received: from callcc.thunk.org (pool-100-0-195-244.bstnma.fios.verizon.net [100.0.195.244]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 05ALAJJG020633 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 Jun 2020 17:10:21 -0400 Received: by callcc.thunk.org (Postfix, from userid 15806) id 4F88C4200DD; Wed, 10 Jun 2020 17:10:19 -0400 (EDT) Date: Wed, 10 Jun 2020 17:10:19 -0400 From: "Theodore Y. Ts'o" To: syzbot Cc: adilger.kernel@dilger.ca, akpm@linux-foundation.org, dan.j.williams@intel.com, jack@suse.cz, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Subject: Re: BUG: unable to handle kernel NULL pointer dereference in generic_perform_write (2) Message-ID: <20200610211019.GJ1347934@mit.edu> References: <00000000000016a67305a33a11f7@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000016a67305a33a11f7@google.com> X-Rspamd-Queue-Id: 020FBD4618 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5b8b9d0c6d0e0f1993c6c56deaf9646942c49d94