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 53FF8C433FE for ; Mon, 28 Nov 2022 10:04:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230178AbiK1KEm (ORCPT ); Mon, 28 Nov 2022 05:04:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230168AbiK1KEl (ORCPT ); Mon, 28 Nov 2022 05:04:41 -0500 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A9E9EA3 for ; Mon, 28 Nov 2022 02:04:39 -0800 (PST) Received: by mail-il1-f197.google.com with SMTP id j20-20020a056e02219400b00300a22a7fe0so8417922ila.3 for ; Mon, 28 Nov 2022 02:04:39 -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:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=zkU8DKyT8h5uQbsxAZF6Th+TAqNYWVm8OMIsDSZWCoo=; b=8MxpbaT1ynfopi3+63+BW+yebhRzyCNv/GKg3gq/acrr3Or1bULHdud1XpLXk1Ewz5 3DkOl8UAefOhp9gDX7pGV804JXMferW1EM+nfvb4q7PjcJGiZBRknjp2UKG7yXVusPdH ThIQREyewhhggv0m2VIo26c/u/MJupYEYI9NLz+CIQSUgPkuqxuHJR81Livx7KZV0/QU DXkWuL3s7x1B2uo8FVPUwaWde4odLTzmphMCa5J+waUrrFFbAbaz1DjKZc29AXP/DK66 9194tbyvCrVdLIo7inrPuSt8GOP27B7ZBjvMpIrTEP42edpjDGmhN7fakUBuNDqY16Qh sQ0g== X-Gm-Message-State: ANoB5pl3Pas+cvrYi/o7my5v4kj94zfpQ9iQYuylYhRY6wwhhh68ik+j D9AMRisrBPlAFixd4CjqVaiSxnLzfnw6DW7IquKGuBlxDqEv X-Google-Smtp-Source: AA0mqf7/JMFO/itGaijjg7p+PTEZcydslt3sHG0FopbTI3QI3qLt+xT7D2m2c5G9p+fU+Wi0v6dwzpYU+l4IrrmsNRPI2Uje9/y0 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:505:b0:303:148c:692c with SMTP id d5-20020a056e02050500b00303148c692cmr1143004ils.114.1669629878863; Mon, 28 Nov 2022 02:04:38 -0800 (PST) Date: Mon, 28 Nov 2022 02:04:38 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d60fa905ee84ff8d@google.com> Subject: [syzbot] KMSAN: uninit-value in hfsplus_attr_bin_cmp_key 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 Hello, syzbot found the following issue on: HEAD commit: a472f15b3d1e kmsan: allow using __msan_instrument_asm_stor.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=14886381880000 kernel config: https://syzkaller.appspot.com/x/.config?x=1429f86b132e6d40 dashboard link: https://syzkaller.appspot.com/bug?extid=c6d8e1bffb0970780d5c 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 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a8bf743ab4c3/disk-a472f15b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7248eae68bc7/vmlinux-a472f15b.xz kernel image: https://storage.googleapis.com/syzbot-assets/0e33e55592a5/bzImage-a472f15b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c6d8e1bffb0970780d5c@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in hfsplus_attr_bin_cmp_key+0xed/0x180 fs/hfsplus/attributes.c:42 hfsplus_attr_bin_cmp_key+0xed/0x180 fs/hfsplus/attributes.c:42 hfs_find_rec_by_key+0xac/0x240 fs/hfsplus/bfind.c:100 __hfsplus_brec_find+0x27a/0x7d0 fs/hfsplus/bfind.c:135 hfsplus_brec_find+0x46a/0x9d0 fs/hfsplus/bfind.c:195 hfsplus_find_attr+0x308/0x380 __hfsplus_getxattr+0x380/0xe50 fs/hfsplus/xattr.c:522 hfsplus_getxattr+0x11f/0x1d0 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x4f/0x60 fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x699/0x6f0 fs/xattr.c:407 cap_inode_need_killpriv+0x52/0xb0 security/commoncap.c:301 security_inode_need_killpriv+0x8f/0x140 security/security.c:1422 dentry_needs_remove_privs+0x1b4/0x3f0 fs/inode.c:1995 do_truncate+0x11f/0x2d0 fs/open.c:57 handle_truncate fs/namei.c:3216 [inline] do_open fs/namei.c:3561 [inline] path_openat+0x4cf7/0x5600 fs/namei.c:3713 do_filp_open+0x249/0x660 fs/namei.c:3740 do_sys_openat2+0x1f0/0x910 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __ia32_sys_creat+0xed/0x160 fs/open.c:1396 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 Uninit was created at: slab_post_alloc_hook mm/slab.h:742 [inline] slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x6ee/0xc90 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0x11d/0x3c0 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] hfsplus_find_init+0x8d/0x250 fs/hfsplus/bfind.c:21 __hfsplus_getxattr+0x2d1/0xe50 fs/hfsplus/xattr.c:516 hfsplus_getxattr+0x11f/0x1d0 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x4f/0x60 fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x699/0x6f0 fs/xattr.c:407 cap_inode_need_killpriv+0x52/0xb0 security/commoncap.c:301 security_inode_need_killpriv+0x8f/0x140 security/security.c:1422 dentry_needs_remove_privs+0x1b4/0x3f0 fs/inode.c:1995 do_truncate+0x11f/0x2d0 fs/open.c:57 handle_truncate fs/namei.c:3216 [inline] do_open fs/namei.c:3561 [inline] path_openat+0x4cf7/0x5600 fs/namei.c:3713 do_filp_open+0x249/0x660 fs/namei.c:3740 do_sys_openat2+0x1f0/0x910 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __ia32_sys_creat+0xed/0x160 fs/open.c:1396 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 CPU: 0 PID: 3846 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-63555-ga472f15b3d1e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 ===================================================== --- This report is generated by a bot. 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