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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B83CBC83F2C for ; Mon, 4 Sep 2023 08:07:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237809AbjIDIHO (ORCPT ); Mon, 4 Sep 2023 04:07:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229821AbjIDIHN (ORCPT ); Mon, 4 Sep 2023 04:07:13 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75C8CF4; Mon, 4 Sep 2023 01:07:10 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 9E7A1CE0E16; Mon, 4 Sep 2023 08:07:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D87CC433C7; Mon, 4 Sep 2023 08:07:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1693814827; bh=18aR+82MNPgu4R0MFGlM/ZazYmgxYtjMznyLEpgnBOc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KZUU3avOxbQjNPqpQkVdQi70JSw1kIYFMfR1XJ+J+ys3xbEVAWjYA5Jmd0rCBbgKU 7PwHyzYYlbvmk+k0L9WQA5qNYWuJ3J4w26Fdsiz/RRoAK0SOPQmxxIhKLZ9Dplp3H+ 86R/D+OJeA3+PtDaN8TlVshHiKj+4jWflohoAm7yW7ZYX2RQ7MdgFZ8EW4a9/E/tWf Au0WJfdkat70lzUrmwzLb76e9B3SoOS8+AXTiUNXSij8Nwbw2v8hML55sSLmQ+X1C0 bZ9pOl46lBG9lPjjLKFICM+h4UEI6YND7htQjwNeZUkTJoF/m2ttfi6uZSCy/2uuoI W66GAKuWaWOVw== Date: Mon, 4 Sep 2023 10:07:02 +0200 From: Christian Brauner To: syzbot Cc: dhowells@redhat.com, jack@suse.cz, linux-afs@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, marc.dionne@auristor.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [afs?] KASAN: slab-use-after-free Read in afs_dynroot_test_super Message-ID: <20230904-sichel-elend-554e68a96d93@brauner> References: <0000000000003849fc0604607941@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <0000000000003849fc0604607941@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Sat, Sep 02, 2023 at 06:44:17AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 1c59d383390f Merge tag 'linux-kselftest-nolibc-6.6-rc1' of.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=13f80797a80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4940ad7c14cda5c7 > dashboard link: https://syzkaller.appspot.com/bug?extid=629c4f1a4cefe03f8985 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=115b0c70680000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170267b7a80000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/b6c588f544ac/disk-1c59d383.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/bab40745ca7b/vmlinux-1c59d383.xz > kernel image: https://storage.googleapis.com/syzbot-assets/9a8f42a5537c/bzImage-1c59d383.xz #syz fix: super: ensure valid info