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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 48B06C433EF for ; Tue, 21 Sep 2021 12:44:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1720F61166 for ; Tue, 21 Sep 2021 12:44:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1720F61166 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=54Ro4O2rhzkVJ/clBnyhUORZ4/pB76fceutLv58u3Sw=; b=TH89CtnG/uv7GH dZnUSBr9R5Wj9HXLinGCo0TRUlJl46+kJIywXKQorjBZAwy91b6eWlvxcgMew9TLtVYg68wf9tvrc BcUErIAQQ3ooQgmqYQRW9HzvjscmB1PtNY91xhSOezXxiyyd2VGam2QXKZ4p0B9PvXa4X6k2Amluw HyTjqXF35s418XdBs19LHYc2yFcXp/UikUyh2oJAs0sz9ELWju5ihQnQABCWrZVzDDnFyasZ8Bbrp j9es9nbs3f8ruc7bpFJIzznbQR/fJm8UDZ0PLGx+v7vgg0WcNMc3gywlK7iECCnqtA67XRQ6PKBru lzEux4Y9sHKxcsxGW8LA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mSf5p-004TQB-5w; Tue, 21 Sep 2021 12:41:49 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mSf5k-004TPK-Nv for linux-arm-kernel@lists.infradead.org; Tue, 21 Sep 2021 12:41:46 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4112F61100; Tue, 21 Sep 2021 12:41:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632228104; bh=4Rvx3u9HCP441RTjiHrvCRRwauhtSwEWIhzMrD3GJIk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JlKXwDIBNap74zCnEhXMgxiublDocy3uzTUFXF4wLpkIwOPwYBPfMaNnn9Y1ZZQ3q J0+wP0eLaD0JCaF/D11G8ZLrORPgtDWoh3fURT1q3UQJfA6udsu9wBHOid32rFbSxZ HcWM44BghlLd+aIM6vvTA/pu4P+I5TYegDDvmI3dOmrsS1RxCc0u9YGoJ1Y1zmST5t iOnA65shHi6DbkZI2p91BRWr/Qs+l0Ry+uXLpzKfmer8aSjVegtXyJFNW7WF+xu5F8 4qhJJo2gFWn8v5M7BrtT+IqOVLQuO+5Btr8vmBvAWiZnYTD7lokhhHo726gYslrqqT 1MDNBpxoR6aFw== Date: Tue, 21 Sep 2021 13:41:39 +0100 From: Will Deacon To: Dmitry Vyukov Cc: syzbot , Linux ARM , Will Deacon , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] upstream test error: WARNING in __do_kernel_fault Message-ID: <20210921124138.GA13537@willie-the-truck> References: <000000000000f8d56e05cb50a541@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210921_054144_841969_BC478D2D X-CRM114-Status: GOOD ( 13.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Sep 17, 2021 at 10:20:40AM +0200, Dmitry Vyukov wrote: > On Mon, 6 Sept 2021 at 11:55, syzbot > wrote: > > > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: f1583cb1be35 Merge tag 'linux-kselftest-next-5.15-rc1' of .. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=17756315300000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=5fe535c85e8d7384 > > dashboard link: https://syzkaller.appspot.com/bug?extid=e6bda7e03e329ed0b1db > > compiler: aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 > > userspace arch: arm64 > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+e6bda7e03e329ed0b1db@syzkaller.appspotmail.com > > +Will, you added this WARNING in 42f91093b04333. > This now crashes periodically on syzbot. I'm still inclined to chalk this one down to a QEMU bug. We're not seeing it anywhere else, and last time you looked at it I seem to remember that it depended upon QEMU configuration [1]. Will [1] https://lore.kernel.org/all/CAAeHK+wDz8aSLyjq1b=q3+HG9aJXxwYR6+gN_fTttMN5osM5gg@mail.gmail.com/ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel