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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT 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 A7D20C64EBC for ; Tue, 2 Oct 2018 23:40:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D894206B2 for ; Tue, 2 Oct 2018 23:40:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=thunk.org header.i=@thunk.org header.b="uhw1AhTs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5D894206B2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-security-module-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725724AbeJCG0i (ORCPT ); Wed, 3 Oct 2018 02:26:38 -0400 Received: from imap.thunk.org ([74.207.234.97]:48444 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725198AbeJCG0i (ORCPT ); Wed, 3 Oct 2018 02:26:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=thunk.org; s=ef5046eb; 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=GfC3Lyv+bxJ55Ur2LIsRWDjgP1Y4L4aB2JULTtefsS8=; b=uhw1AhTs5Eq3FZ/DegQwxorb9x Cq8EhSRXH1fR7bAciSvRJhdDflw/6AcrXaRefe6cLEEnuM4ESdZxaZ3qvXJ/ja5nCwgU+2pzR1NFt /SF61PoqrTWHAhFkhq9DFLGal55hQ5DTrrY5lMSldVoamqQ2kS+xPwdUHwVans20q+wM=; Received: from root (helo=callcc.thunk.org) by imap.thunk.org with local-esmtp (Exim 4.89) (envelope-from ) id 1g7UHS-0001GC-K3; Tue, 02 Oct 2018 23:40:42 +0000 Received: by callcc.thunk.org (Postfix, from userid 15806) id E2AAA7A5186; Tue, 2 Oct 2018 19:40:41 -0400 (EDT) Date: Tue, 2 Oct 2018 19:40:41 -0400 From: "Theodore Y. Ts'o" To: syzbot Cc: dmitry.kasatkin@gmail.com, jlayton@kernel.org, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, mjg59@google.com, serge@hallyn.com, sudeep.holla@arm.com, syzkaller-bugs@googlegroups.com, zohar@linux.vnet.ibm.com Subject: Re: general protection fault in rb_erase Message-ID: <20181002234041.GC2483@thunk.org> Mail-Followup-To: "Theodore Y. Ts'o" , syzbot , dmitry.kasatkin@gmail.com, jlayton@kernel.org, jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, mjg59@google.com, serge@hallyn.com, sudeep.holla@arm.com, syzkaller-bugs@googlegroups.com, zohar@linux.vnet.ibm.com References: <00000000000041b4c20576baae46@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000041b4c20576baae46@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: On Tue, Sep 25, 2018 at 04:44:03PM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 846e8dd47c26 Merge tag 'scsi-fixes' of git://git.kernel.or.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15c874a1400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=dfb440e26f0a6f6f > dashboard link: https://syzkaller.appspot.com/bug?extid=e81ccd4744c6c4f71354 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15bddd2a400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1293d3fa400000 Fixed with this patch: http://patchwork.ozlabs.org/patch/978083/