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 2200BC61DA4 for ; Mon, 6 Feb 2023 12:05:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229903AbjBFMFw (ORCPT ); Mon, 6 Feb 2023 07:05:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbjBFMFu (ORCPT ); Mon, 6 Feb 2023 07:05:50 -0500 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F309F12F1D for ; Mon, 6 Feb 2023 04:05:48 -0800 (PST) Received: by mail-il1-f199.google.com with SMTP id 9-20020a056e0220c900b0030f1b0dfa9dso7834008ilq.4 for ; Mon, 06 Feb 2023 04:05:48 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Yc5TaIw9e/++YKxo1Lt6L/DeNw+M003kD9JJ5QRXvXE=; b=jMoElF/uS6F7dH1I9VX60ZRw4JdWctwWx4S4O4NDipZAun4XwFb37o8qZ+Wu3NDDq7 dUsgW9ELhoj0klac8oG8kTtKN3drudfer+dkAPhfTKFBYqPDzqeFO/Nw06rvJyyBjML8 2BPx8WGw5YwUyW0ufkq5eFigqCFgDbLhHweC/56rcy99PTjpohhd+0Yv5JDPp0Om/bIA btmtMf4AxHirsFeAyN0IAiF5UHDEnA7fWiam6fDY7R4ohi4OIBdPykuga/vJkknmG0/m Lshmra2Gcr6s1VnLkG8PaAhSBr3c5xLU2yMtb0eZqTd6MYCE0PDMUmNe+GsVKE713NO1 aeFA== X-Gm-Message-State: AO0yUKUJgY2mA4kWJt5uUsnSfkCP5J2dXNx51Vst58rnLM4TlUPEn6Cp pT7X/Uwqz6TSe4K98HW1UeSD2735b8TgKots11XLQEUeNdQU X-Google-Smtp-Source: AK7set/dPyvOs92oygtpg+rFekRsU13zRFjJQ8iXuQiUWttVgG53X9wmWd1NcMn2VZ9uOOp6CjTDGqMSeQLMXYTF3Kgli5ZaW1pH MIME-Version: 1.0 X-Received: by 2002:a92:7011:0:b0:310:a12c:7898 with SMTP id l17-20020a927011000000b00310a12c7898mr4056030ilc.24.1675685148369; Mon, 06 Feb 2023 04:05:48 -0800 (PST) Date: Mon, 06 Feb 2023 04:05:48 -0800 In-Reply-To: <00000000000043c9a105ef4cccf7@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000062d6005f406daa8@google.com> Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfs_brec_find From: syzbot To: glider@google.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: eda666ff2276 kmsan: silence -Wmissing-prototypes warnings git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=17bbb96b480000 kernel config: https://syzkaller.appspot.com/x/.config?x=f27365aeb365b358 dashboard link: https://syzkaller.appspot.com/bug?extid=5ce571007a695806e949 compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project.git 610139d2d9ce6746b3c617fb3e2f7886272d26ff), GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15ac6175480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e00d23480000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fc16035efde4/disk-eda666ff.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/084efc06a321/vmlinux-eda666ff.xz kernel image: https://storage.googleapis.com/syzbot-assets/35c07fcfcbf2/bzImage-eda666ff.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/0f9e3b43e8ac/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5ce571007a695806e949@syzkaller.appspotmail.com WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= hfs: keylen 9474 too large ===================================================== BUG: KMSAN: uninit-value in hfs_brec_find+0x671/0x9b0 fs/hfs/bfind.c:141 hfs_brec_find+0x671/0x9b0 fs/hfs/bfind.c:141 hfs_brec_read+0x3b/0x190 fs/hfs/bfind.c:165 hfs_cat_find_brec+0xfb/0x450 fs/hfs/catalog.c:194 hfs_fill_super+0x1f49/0x2400 fs/hfs/super.c:419 mount_bdev+0x508/0x840 fs/super.c:1359 hfs_mount+0x49/0x60 fs/hfs/super.c:456 legacy_get_tree+0x10c/0x280 fs/fs_context.c:610 vfs_get_tree+0xa1/0x500 fs/super.c:1489 do_new_mount+0x694/0x1580 fs/namespace.c:3145 path_mount+0x71a/0x1eb0 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x734/0x840 fs/namespace.c:3674 __ia32_sys_mount+0xdf/0x140 fs/namespace.c:3674 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Local variable fd created at: hfs_fill_super+0x5e/0x2400 fs/hfs/super.c:381 mount_bdev+0x508/0x840 fs/super.c:1359 CPU: 0 PID: 4991 Comm: syz-executor151 Not tainted 6.2.0-rc6-syzkaller-80422-geda666ff2276 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 =====================================================