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=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 autolearn=unavailable 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 25669C76191 for ; Fri, 26 Jul 2019 02:46:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDEC122CB9 for ; Fri, 26 Jul 2019 02:46:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726141AbfGZCqp (ORCPT ); Thu, 25 Jul 2019 22:46:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:39880 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725942AbfGZCqp (ORCPT ); Thu, 25 Jul 2019 22:46:45 -0400 Received: from oasis.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E14462238C; Fri, 26 Jul 2019 02:46:42 +0000 (UTC) Date: Thu, 25 Jul 2019 22:46:41 -0400 From: Steven Rostedt To: syzbot Cc: bsingharora@gmail.com, coreteam@netfilter.org, davem@davemloft.net, dri-devel@lists.freedesktop.org, duwe@suse.de, dvyukov@google.com, kaber@trash.net, kadlec@blackhole.kfki.hu, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mingo@redhat.com, mpe@ellerman.id.au, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, sumit.semwal@linaro.org, syzkaller-bugs@googlegroups.com Subject: Re: memory leak in dma_buf_ioctl Message-ID: <20190725224641.5d8baeb7@oasis.local.home> In-Reply-To: <00000000000005dbbc058e8c608d@google.com> References: <000000000000b68e04058e6a3421@google.com> <00000000000005dbbc058e8c608d@google.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org On Thu, 25 Jul 2019 19:34:01 -0700 syzbot wrote: > syzbot has bisected this bug to: > > commit 04cf31a759ef575f750a63777cee95500e410994 > Author: Michael Ellerman > Date: Thu Mar 24 11:04:01 2016 +0000 > > ftrace: Make ftrace_location_range() global It's sad that I have yet to find a single syzbot bisect useful. Really? setting a function from static to global will cause a memory leak in a completely unrelated area of the kernel? I'm about to set these to my /dev/null folder. -- Steve > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=154293f4600000 > start commit: abdfd52a Merge tag 'armsoc-defconfig' of git://git.kernel... > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=174293f4600000 > console output: https://syzkaller.appspot.com/x/log.txt?x=134293f4600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d31de3d88059b7fa > dashboard link: https://syzkaller.appspot.com/bug?extid=b2098bc44728a4efb3e9 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12526e58600000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161784f0600000 > > Reported-by: syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com > Fixes: 04cf31a759ef ("ftrace: Make ftrace_location_range() global") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection