From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (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 245C9145B0B for ; Wed, 25 Sep 2024 01:28:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727227707; cv=none; b=ffHlA8mZ/Rx1jOWGrNo04sHG8FQDixBhQQa1JaVkV9Otd8t/tTpvDGhsu6Cj0pbR+pnPMC5re7E7AOhMnR8JmK8MwEc16IBobXO0+6986mNlPoSfcJA+RdHf82c2GElS96Bow29/KtKpbB5CdeXRuTz4wCAsXbKzGd5uuA50aos= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727227707; c=relaxed/simple; bh=5n942yHYYWOIIk0LfIm2nfmYfyORxFjSQXjeLhFsLV8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=DS+AscqHfHllaQcpHTIwv0PzxZUN99V1BdX0EAASsd5bA5Qi1hfwfUXDPS74MnRr+c3198/MLAMVyJ3jW0eu5/GyikGuHkSowbQmEPLnmfwaHyNQ6L52GYMNbCze1dcNfogEI8qOm5z//n7lamyBMcHL6DDz3KX/Vv6cvW1lyLE= 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=209.85.166.72 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-f72.google.com with SMTP id ca18e2360f4ac-82cdb749571so622556539f.1 for ; Tue, 24 Sep 2024 18:28:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727227705; x=1727832505; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=6iVNGliU2YEWa4+d/A9WhHN0EgbELWDz/lD1nQdQndo=; b=f/yjdc13nvQNNa9Svsx2+URzsVh2OwGjUHo6ynQnKUOwrxIKLryxReWR6YOEXRANFq KYfZRzApsJYcRrux5gGwt1hkOsO7VFWnJxJCeRXA9q+O050+REzXLUY5423zmqhOxuHP TpYycjK+/LN0EQPmCCyWTXvOvwUvVGtK6mci6He5cw7RHdeSJUGc8KL8jkE0PoZYwWUW yj9h0eD9fxDQ7W3jCVLZfu2SBtZIB7ydU/AkHAAz3MK7sU19Ft+P/EBBvWhsj6rMGQhE zwbK60xXOuW2G+2y9RnZevT5EvY64xbK+i1jFXL49gGHDhrYJpohXfqnrAaqqAomNaVD sa1w== X-Forwarded-Encrypted: i=1; AJvYcCV51nT2Qu2DPUmLIxQqtZYkRD8iIXOMbjqTE0YQ6Lyucq+5nP4GoyDXABM2Go1m/Tasz4u7vOeHKRlz0EI=@vger.kernel.org X-Gm-Message-State: AOJu0Yw5/nFdglf4JSHt6pon6STb3hpGmWGDp+dvnkmCdTeST9oSWeGN n0pi2iOOJg27urDOnpYQEdRBQbyxt+BQV7w0c6BtAkZjf7+fD71ItN1844FEJPmkKeAOUHrt1VU OHZ+P3TcP678NXR/AkkYa8S7e1pRgkr1l1RHfkK8EAADVmbHgg8CZTEI= X-Google-Smtp-Source: AGHT+IGcKJDS1W6/v9uEM44JZcc/aG8tZxBooFdmswhFeCLD7+c5rrnNFzYQiO/fRcwKR+Wa7SNMU3bLrJhzxmxLr80gpNQf2bCY Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1d97:b0:3a0:90c7:f1b with SMTP id e9e14a558f8ab-3a26d773085mr12755805ab.12.1727227705228; Tue, 24 Sep 2024 18:28:25 -0700 (PDT) Date: Tue, 24 Sep 2024 18:28:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66f36739.050a0220.30ac7d.0004.GAE@google.com> Subject: [syzbot] [ocfs2?] KMSAN: uninit-value in ocfs2_get_block From: syzbot To: jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: baeb9a7d8b60 Merge tag 'sched-rt-2024-09-17' of git://git... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=172af607980000 kernel config: https://syzkaller.appspot.com/x/.config?x=acaa65be5f19fc5a dashboard link: https://syzkaller.appspot.com/bug?extid=9709e73bae885b05314b 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=161e2ca9980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151bff00580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cac89ddb3388/disk-baeb9a7d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ddec90b149ab/vmlinux-baeb9a7d.xz kernel image: https://storage.googleapis.com/syzbot-assets/f8db8244cc07/bzImage-baeb9a7d.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/25ed405f5727/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9709e73bae885b05314b@syzkaller.appspotmail.com OCFS2: ERROR (device loop0): int __ocfs2_find_path(struct ocfs2_caching_info *, struct ocfs2_extent_list *, u32, path_insert_t *, void *): Owner 17 has empty extent list at depth 312 On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: Returning error to the calling process. (syz-executor337,5180,0):ocfs2_find_leaf:1940 ERROR: status = -30 (syz-executor337,5180,0):ocfs2_get_clusters_nocache:421 ERROR: status = -30 (syz-executor337,5180,0):ocfs2_get_clusters:624 ERROR: status = -30 (syz-executor337,5180,0):ocfs2_extent_map_get_blocks:671 ERROR: status = -30 ===================================================== BUG: KMSAN: uninit-value in ocfs2_get_block+0xed2/0x2710 fs/ocfs2/aops.c:159 ocfs2_get_block+0xed2/0x2710 fs/ocfs2/aops.c:159 do_mpage_readpage+0xc45/0x2780 fs/mpage.c:225 mpage_readahead+0x43f/0x840 fs/mpage.c:374 ocfs2_readahead+0x269/0x320 fs/ocfs2/aops.c:381 read_pages+0x193/0x1110 mm/readahead.c:160 page_cache_ra_unbounded+0x901/0x9f0 mm/readahead.c:273 do_page_cache_ra mm/readahead.c:303 [inline] force_page_cache_ra+0x3b1/0x4b0 mm/readahead.c:332 force_page_cache_readahead mm/internal.h:347 [inline] generic_fadvise+0x6b0/0xa90 mm/fadvise.c:106 vfs_fadvise mm/fadvise.c:185 [inline] ksys_fadvise64_64 mm/fadvise.c:199 [inline] __do_sys_fadvise64 mm/fadvise.c:214 [inline] __se_sys_fadvise64 mm/fadvise.c:212 [inline] __x64_sys_fadvise64+0x1fb/0x3a0 mm/fadvise.c:212 x64_sys_call+0xe11/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:222 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 Local variable p_blkno created at: ocfs2_get_block+0xc7/0x2710 fs/ocfs2/aops.c:140 do_mpage_readpage+0xc45/0x2780 fs/mpage.c:225 CPU: 0 UID: 0 PID: 5180 Comm: syz-executor337 Not tainted 6.11.0-syzkaller-07341-gbaeb9a7d8b60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup