From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 707F715B57A for ; Mon, 19 Aug 2024 09:32:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724059945; cv=none; b=P2rV5I/4U0uuoPKb09uv0sH3vbszE2aIgzHZF2jAQlIkDI6J5uL8aVPiwbxaCjf94oXLmZeBpIYFGstK+zeFRTXtvX65K25EWGqX8NJNdeqYudBO58ZcRnpPvtgKZmViB0YUCgl3G5N9tlEIKNy1/DfYcq0o09bTBmWSw4BzxmY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724059945; c=relaxed/simple; bh=5rMARzXfjykrfd6VRs6OIjWAzoKwx9rwjE22ch6ES3w=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=LU4eXPdbqBn+3h9ZQqICnChrDU8yOadZpDLJISc3glEtZgqvPU0IC929LhGTBaFLQ+dc87tlDVaBl4c5unqmdujDj5jjROZIufWocMCg7LlQX6Vb/CjiqDZtHONlRIeYMNL4BIDnuiuBZKxwjnb8n7DFdpGXXu74/frYnty0i50= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-8223aed78e2so419485439f.0 for ; Mon, 19 Aug 2024 02:32:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724059942; x=1724664742; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=31Ti/nVOY7JVVGXS7iHukqNPYzxM76JGPC6XDQTDHuY=; b=mcojzxo246hz8DgTRBF0uKbE6Gja8QW/YZ0B+OqHZUIZfvWhxDWk8rnoa6EyjxbBCi eK5fvu7k0j+RN08gODTpu8D2FAo9ZXsDW4f8LRbE4HI8TzRBGu/JMAGY+HDmhO83Tqks XB9Vcmo2N3XF7/EJCH9zsuPZTh+1BX3/JUeADMf6tJGW3GrA8DHESlv/cMdq5Unoschb HWmb7gkftV+2vm1Y27I4NmL8aMnoQYrc7lr3EoFBUF6NVe03jfeMxNdUMLkXmNjV9mbV Ff0Xr5tDzNSzJt1Fq7Qot3rAhkdJIo4pIefCl+8X6P4JsA8VYgag7mjVmuLFqb41836O HROg== X-Forwarded-Encrypted: i=1; AJvYcCVpG1ih9wZRmQEt25jdhrmzGAomkKsa8RH3lkli7yLGGfzbeK/9/uKH6tj5osjS+yJo3RDZG6qOSrHmCLHP3IYV7DCRVWkN3gYhcv+G X-Gm-Message-State: AOJu0YwTTeic5CWE13Ytzwh33/Nrk5R4zqzQUFTC83nmX6fBickeWm2d nH2Mtj+4vspTBphoiXE5J6AQwhUlG8Xc0YB3RuJT76PdoSnDS6TeYNvKYczkXVwN/Ugk9zhvA4s n7P489pvh6YpYHFDalbVCLC29SajtuByy8VHftM4K3PZREU26uGsRZMc= X-Google-Smtp-Source: AGHT+IF6qveUhN2bNVUNT25upCC6vqQ9wkR5DddErz2BaGezXnt0SC16TLAqfzkPEwvNmJUpTTVpZ5GjGO2r+Pd99XrDX74fqQFT Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:370f:b0:4b9:e5b4:67fd with SMTP id 8926c6da1cb9f-4cce15cdbd5mr540564173.1.1724059942654; Mon, 19 Aug 2024 02:32:22 -0700 (PDT) Date: Mon, 19 Aug 2024 02:32:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000742b9d062005fc1c@google.com> Subject: [syzbot] [ext4?] [ocfs2?] KASAN: null-ptr-deref Write in jbd2_journal_update_sb_log_tail From: syzbot To: jack@suse.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c3f2d783a459 Merge tag 'mm-hotfixes-stable-2024-08-17-19-3.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13736c29980000 kernel config: https://syzkaller.appspot.com/x/.config?x=7229118d88b4a71b dashboard link: https://syzkaller.appspot.com/bug?extid=05b9b39d8bdfe1a0861f 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=15f1b191980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1042525b980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-c3f2d783.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4d927f7c3cfd/vmlinux-c3f2d783.xz kernel image: https://storage.googleapis.com/syzbot-assets/ea54bdfad24b/bzImage-c3f2d783.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/562379f73e38/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+05b9b39d8bdfe1a0861f@syzkaller.appspotmail.com (syz-executor198,5100,0):ocfs2_check_volume:2481 ERROR: status = -22 (syz-executor198,5100,0):ocfs2_mount_volume:1821 ERROR: status = -22 ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:57 [inline] BUG: KASAN: null-ptr-deref in trylock_buffer include/linux/buffer_head.h:420 [inline] BUG: KASAN: null-ptr-deref in lock_buffer include/linux/buffer_head.h:426 [inline] BUG: KASAN: null-ptr-deref in jbd2_journal_update_sb_log_tail+0x19b/0x360 fs/jbd2/journal.c:1889 Write of size 8 at addr 0000000000000000 by task syz-executor198/5100 CPU: 0 UID: 0 PID: 5100 Comm: syz-executor198 Not tainted 6.11.0-rc3-syzkaller-00338-gc3f2d783a459 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_report+0xe8/0x550 mm/kasan/report.c:491 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:57 [inline] trylock_buffer include/linux/buffer_head.h:420 [inline] lock_buffer include/linux/buffer_head.h:426 [inline] jbd2_journal_update_sb_log_tail+0x19b/0x360 fs/jbd2/journal.c:1889 __jbd2_update_log_tail+0x48/0x3f0 fs/jbd2/journal.c:1079 jbd2_cleanup_journal_tail+0x230/0x2d0 fs/jbd2/checkpoint.c:334 jbd2_journal_flush+0x290/0xc10 fs/jbd2/journal.c:2479 ocfs2_journal_shutdown+0x443/0xbe0 fs/ocfs2/journal.c:1081 ocfs2_mount_volume+0x169f/0x1940 fs/ocfs2/super.c:1842 ocfs2_fill_super+0x483b/0x5880 fs/ocfs2/super.c:1084 mount_bdev+0x20a/0x2d0 fs/super.c:1679 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2a0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3472 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f69037ad16a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffed646ff58 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffed646ff70 RCX: 00007f69037ad16a RDX: 0000000020004480 RSI: 00000000200044c0 RDI: 00007ffed646ff70 RBP: 0000000000000004 R08: 00007ffed646ffb0 R09: 0000000000004470 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 R13: 00007ffed646ffb0 R14: 0000000000000003 R15: 0000000001000000 ================================================================== --- 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