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 520F0C4332F for ; Fri, 25 Nov 2022 09:58:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229477AbiKYJ6F (ORCPT ); Fri, 25 Nov 2022 04:58:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230020AbiKYJ5q (ORCPT ); Fri, 25 Nov 2022 04:57:46 -0500 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE6DB14D0D for ; Fri, 25 Nov 2022 01:56:33 -0800 (PST) Received: by mail-io1-f70.google.com with SMTP id t2-20020a6b6402000000b006dea34ad528so1864018iog.1 for ; Fri, 25 Nov 2022 01:56:33 -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=hUSkP76cq3aYcTr4I+ixSY0EUlW3U5c4YEXhWdyd9B4=; b=pJFr9XxIZXMZkggp1SoAiQOi+m772IJptbxiwRd3K9cqeAaY3OViXOrID4KzAR8W2G 3anhTaYTnDLkijcr2PVENCvSotQV7lJERmNnNozudR0p+Uhs7ODWg8ZWWk5V3zuX+/g7 qN5wYUdvKY+2PPiRIDZPKxMo1jRwxrsI25PcIgrRsM6xIuU8UkHtr1wuX/aJpwt7zGpD CWUGYPO4+LZv2dpt/e2nbb69XxIzd5yWZmGT2MtHR+xVlpZwfFZAGcr+LAYpJRa7OjMg 7usa5diWKztAGRgm9eKqLoHjxCe3qCZB/gaLfNXRdOJYFnH5XSFBVVI/DSSbHbvZ/t28 A4Gg== X-Gm-Message-State: ANoB5pm+vUKMzH855jG50cyO4c7San7qet82frRNpYKfworjH+klVOEW YA0/9dPdiZQv4T1WewbWX/sdVXFluxu0Z5RQdeRwDuVuwRrB X-Google-Smtp-Source: AA0mqf5Ckrc3x5yhpe1j8Yn+Gh0gZFYldrZQnZXsdZ0y96ljxWUOxmpZU2foN2GcIhNE3MAGXkxQB0+VouF7o8qaCRnhiN2bsfrm MIME-Version: 1.0 X-Received: by 2002:a02:9469:0:b0:363:afc3:b405 with SMTP id a96-20020a029469000000b00363afc3b405mr9631171jai.243.1669370193038; Fri, 25 Nov 2022 01:56:33 -0800 (PST) Date: Fri, 25 Nov 2022 01:56:33 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005ad04005ee48897f@google.com> Subject: [syzbot] KMSAN: uninit-value in hfs_revalidate_dentry 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=1206a7fd880000 kernel config: https://syzkaller.appspot.com/x/.config?x=1429f86b132e6d40 dashboard link: https://syzkaller.appspot.com/bug?extid=3ae6be33a50b5aae4dab 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+3ae6be33a50b5aae4dab@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 64 ===================================================== BUG: KMSAN: uninit-value in hfs_revalidate_dentry+0x17f/0x3e0 fs/hfs/sysdep.c:30 hfs_revalidate_dentry+0x17f/0x3e0 fs/hfs/sysdep.c:30 d_revalidate fs/namei.c:856 [inline] lookup_open fs/namei.c:3345 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x115a/0x5600 fs/namei.c:3710 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_compat_sys_openat fs/open.c:1386 [inline] __se_compat_sys_openat fs/open.c:1384 [inline] __ia32_compat_sys_openat+0x2a7/0x330 fs/open.c:1384 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: __alloc_pages+0x9f1/0xe80 mm/page_alloc.c:5578 alloc_pages+0xaae/0xd80 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x1b5/0x1010 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x10c3/0x2d60 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x6f3/0xb30 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3117 [inline] hfs_alloc_inode+0x56/0xc0 fs/hfs/super.c:165 alloc_inode+0x83/0x440 fs/inode.c:259 iget_locked+0x2a1/0xe20 fs/inode.c:1286 hfs_btree_open+0x162/0x1ab0 fs/hfs/btree.c:38 hfs_mdb_get+0x207d/0x29b0 fs/hfs/mdb.c:199 hfs_fill_super+0x1d13/0x2400 fs/hfs/super.c:406 mount_bdev+0x508/0x840 fs/super.c:1401 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:1531 do_new_mount+0x694/0x1580 fs/namespace.c:3040 path_mount+0x71a/0x1eb0 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x734/0x840 fs/namespace.c:3568 __ia32_sys_mount+0xdf/0x140 fs/namespace.c:3568 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: 4234 Comm: syz-executor.0 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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