From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 379C584FAD for ; Mon, 24 Mar 2025 02:23:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742782987; cv=none; b=IBuBW0kf6J/YzCmmlqW4iL8U5qAM4qNzocIn1hOz+M1QHG9IDr76iHQrTVTYl1npnYv+9Zn3bLdIzUMZH24oeMMmiKeZ6XnrQUbLjcYg/5bXmvpgVT0Rye4erv3W0QO4JYlgQRkgqAQSxG2i5LKbvK0w6MVrILbIS8DKQZhkIfA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742782987; c=relaxed/simple; bh=+e5ffWsoJaBNl4TqcP2TPhMnuCc9KE+HiMolKSFB1Cg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=NZCKZe3MTd2+7HzTtQesjGzuaEEf8PiLzTVgs+2UGri4zKNBkS5zdoIzGIjXEHbphskdcLZCPgE0ybPBJ3m8C2Ht5Rg+kCtJ80ZtcTCHbVC4DHhrQsSEnH0l5JxRxA1Mo9GTguAXLVx1FTqIkk1pppDk+9Efo1JbUfr5eA87tcw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-85b418faf73so920248839f.1 for ; Sun, 23 Mar 2025 19:23:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742782985; x=1743387785; 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=Gi5ySRgdQ/KxJgbcKLB5tqrU5XZ/08vGTpnyucIbSM0=; b=fM3mSnjfTBiz1p5++V4inP+SGSaJH7mLg+MbgLmNBNxQHx9CnpNhjNgG6w/1Zsfe7p 8MQKuCReHch+d5pp3fbWmrQ+4S03BSp0yNOQGFelK2DCHnVQlvkAidFjxJ/5qwCBh2t0 FQpvFN5ig7cYyHJgCGgsuqImu5v+BPERXtzWPZct8/SWgbOiEkA9Yb3EuGSDCDcPeQ+C YkRAV93TBJi/ol1HL5XXowt9XVxmIbVq3A1Vdvb15YEEIO/28iI+umWdz0KQOOKG/o8A B+KCrvhExWkBYYONsDFD2ZoiipIs3PVVg6PA303Qj0+nWXQl/iOW8k4ircvt3ZMAvWdp YGZw== X-Gm-Message-State: AOJu0YyTUCZhm3m6Jcj0FcvBNrnQu3BRENjKRz3xVviXNJyMxQySHqlC QXJhCVcSI0vUhTURcCn+hdx8b86LrK4/cKN46XTLMuLEvc+rQgRwsFRx7+jABYtUhEPsLbkAyWb 9G7tZkRKc+xDYJFF9rtXhDesUL30FNsUtYNJHBJqVjwxpI/En6ajoI98= X-Google-Smtp-Source: AGHT+IG/IFeUaYJV9AEQfw9cPnmJhz1ZuRlTzrivPYH5Oad5lW+P7Aj5g0H+N9yX96okV3Z6l7NRsh/lkUDizSMLno1gBSKJnSgz Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1525:b0:3d3:dfa2:4642 with SMTP id e9e14a558f8ab-3d59611b1famr89894995ab.13.1742782985182; Sun, 23 Mar 2025 19:23:05 -0700 (PDT) Date: Sun, 23 Mar 2025 19:23:05 -0700 In-Reply-To: <20250324013855.2122966-1-lizhi.xu@windriver.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67e0c209.050a0220.a7ebc.000a.GAE@google.com> Subject: Re: [syzbot] [ocfs2?] KMSAN: uninit-value in _find_next_bit From: syzbot To: linux-kernel@vger.kernel.org, lizhi.xu@windriver.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: KMSAN: uninit-value in _find_next_bit (syz.0.16,6650,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ===================================================== BUG: KMSAN: uninit-value in _find_next_bit+0x11c/0x130 lib/find_bit.c:145 _find_next_bit+0x11c/0x130 lib/find_bit.c:145 find_next_bit include/linux/find.h:69 [inline] ocfs2_add_recovery_chunk fs/ocfs2/quota_local.c:313 [inline] ocfs2_recovery_load_quota+0x68e/0x1350 fs/ocfs2/quota_local.c:362 ocfs2_local_read_info+0x139e/0x2c10 fs/ocfs2/quota_local.c:755 dquot_load_quota_sb+0xa35/0xdc0 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x662/0x9f0 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x1d4/0x6e0 fs/ocfs2/super.c:930 ocfs2_fill_super+0xa6b7/0xb550 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x6ec/0x910 fs/super.c:1636 get_tree_bdev+0x37/0x50 fs/super.c:1659 ocfs2_get_tree+0x34/0x40 fs/ocfs2/super.c:1184 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814 do_new_mount+0x71f/0x15e0 fs/namespace.c:3560 path_mount+0x742/0x1f10 fs/namespace.c:3887 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x71f/0x800 fs/namespace.c:4088 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4088 x64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4121 [inline] slab_alloc_node mm/slub.c:4164 [inline] __do_kmalloc_node mm/slub.c:4293 [inline] __kmalloc_noprof+0x923/0x1230 mm/slub.c:4306 kmalloc_noprof include/linux/slab.h:905 [inline] ocfs2_add_recovery_chunk fs/ocfs2/quota_local.c:305 [inline] ocfs2_recovery_load_quota+0x404/0x1350 fs/ocfs2/quota_local.c:362 ocfs2_local_read_info+0x139e/0x2c10 fs/ocfs2/quota_local.c:755 dquot_load_quota_sb+0xa35/0xdc0 fs/quota/dquot.c:2459 dquot_load_quota_inode+0x662/0x9f0 fs/quota/dquot.c:2496 ocfs2_enable_quotas+0x1d4/0x6e0 fs/ocfs2/super.c:930 ocfs2_fill_super+0xa6b7/0xb550 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x6ec/0x910 fs/super.c:1636 get_tree_bdev+0x37/0x50 fs/super.c:1659 ocfs2_get_tree+0x34/0x40 fs/ocfs2/super.c:1184 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814 do_new_mount+0x71f/0x15e0 fs/namespace.c:3560 path_mount+0x742/0x1f10 fs/namespace.c:3887 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x71f/0x800 fs/namespace.c:4088 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4088 x64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 6650 Comm: syz.0.16 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ===================================================== Tested on: commit: 586de923 Merge tag 'i2c-for-6.14-rc8' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=157bfe98580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d4644c4063c5098 dashboard link: https://syzkaller.appspot.com/bug?extid=7ea0b96c4ddb49fd1a70 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=1613fe98580000