From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 AD9B91EEE6 for ; Sun, 25 May 2025 10:51:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748170294; cv=none; b=V3/RxbqHlzHNCkRAAmAyjsw9P5EQw4USSslHzgEtY2toaBpQqRnhVBPDele0krjRfk3W8AVkO5HReCEluwb5IciLuSWlhMi7UUu+E6yH8ZUJ2Ib4ATsp8shlcWP96THS4RgqO/uIuuCMKwS04E29LYwx7uutAq33yZWhKmQlqQs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748170294; c=relaxed/simple; bh=Oa34/m9hCBxB+jJeUi3f27Wm/DyeXjvNCF008TtGAQQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=UcQJPTa3WXEYWrIYPAjIuz2W+JhEj5nj7r4QqABOvMqxj8I7InvYphiPU6vDsk/URGkraEGyQq1eT663YMwvo3aZCEf2Doblxmg1u4crH0brVwJZUMFqI+fP0X7qlbTBIgsSD8HLlS9XWcqIEBRipPR0bf1UIyfpbtLONCC94YI= 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=209.85.166.77 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-f77.google.com with SMTP id ca18e2360f4ac-85b3888569bso111317539f.1 for ; Sun, 25 May 2025 03:51:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748170292; x=1748775092; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=xtRZa0aVmC1OpZ7OQyz5QGz3z13z+YI/OAolGa309pI=; b=n/O4wagBUxkXNQ3Dv/ZcB2NpRTCyX/C93kQV/Loq13jUoBQLMXI6E/q6AyVf/yVa/H UxrWZSuscVGXE4ETix3GVzGwZPuZF+sc9iT27Bya/DpaGaQBrwPIDOXAmhva5/RBpi1E zUZZ5RcfnY9m7SUkmzjVoA5R43Dwd1B/PA53o9m24T3WxEerFeFbLV21o4DT5phDVMUA JnjqliNoOeyfPX+CrNfKQVvTeTbDDXFSgLTVqApS6AQtTxsYd1y0FwRHmxLI4XzH9+/V lNr7uuCEKzv8AlAFHK+PuzIgXPJxKSIXkloEYAtC9KsL3tA1XdL2+KqPS/qq3NEbAahS UAzw== X-Forwarded-Encrypted: i=1; AJvYcCXA729NwGf3TwY7Wpm5N/ulMm7zJMVMJiRYPcMVtpDrJF7uoB8h9kK1zoxpSGh3p/T21Kk8GOveQjXghKY=@vger.kernel.org X-Gm-Message-State: AOJu0Yz65jTfFm7NgIL/WY0nsEj+X9MPHTJAeZPIAQsEPx228tGGSqrj Hj+FMNaZZgwgKHv2TBb/5ZyKnJDGPB0aRoExhoet0tr+lKBcZTDmQ3ZV8eVj53r+qg+8RMsRF0Z puJY7mcmFaIYCzdYJX2j+JGDqd/J6iGX7l75mAICI6+3zNygFXd688nVJMgY= X-Google-Smtp-Source: AGHT+IFlld98JAlDwwVSrgQIBcz+fyTpGDHPtAwKORBWq9vFvptyfXeFQkTa1r8prfYf6v4+YiyxhlSPv5x/c9mOWMAzySwJIv7W Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:360b:b0:85b:4310:a91c with SMTP id ca18e2360f4ac-86cbb5eedc9mr565893239f.1.1748170291751; Sun, 25 May 2025 03:51:31 -0700 (PDT) Date: Sun, 25 May 2025 03:51:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6832f633.a70a0220.253bc2.0087.GAE@google.com> Subject: [syzbot] [ocfs2?] kernel BUG in __ocfs2_decrease_refcount 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: b36ddb9210e6 Merge tag 'for-linus-6.15-ofs2' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12fb69f4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9fd1c9848687d742 dashboard link: https://syzkaller.appspot.com/bug?extid=7774dd506af3f6fb5df5 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-b36ddb92.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2e5bf04315bb/vmlinux-b36ddb92.xz kernel image: https://storage.googleapis.com/syzbot-assets/14f603b88226/bzImage-b36ddb92.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7774dd506af3f6fb5df5@syzkaller.appspotmail.com (syz.0.0,5319,0):ocfs2_dio_end_io:2398 ERROR: Direct IO failed, bytes = -28 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/refcounttree.c:2242! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.15.0-rc7-syzkaller-00002-gb36ddb9210e6 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__ocfs2_decrease_refcount+0x1603/0x1780 fs/ocfs2/refcounttree.c:2242 Code: fe c6 05 07 19 cb 0b 01 90 48 c7 c7 40 5b aa 8b e8 52 34 e6 fd 90 0f 0b 90 90 e9 a7 eb ff ff e8 43 6c b8 07 e8 ae d7 21 fe 90 <0f> 0b e8 a6 d7 21 fe 90 0f 0b e8 9e d7 21 fe 90 0f 0b e8 96 d7 21 RSP: 0018:ffffc9000d3b6880 EFLAGS: 00010287 RAX: ffffffff839e1a22 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e613000 RSI: 0000000000004b6e RDI: 0000000000004b6f RBP: ffffc9000d3b6b40 R08: ffff88801f6da440 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000002 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc9000d3b6930 R15: 0000000000000001 FS: 00007f9d9ebc46c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555b9e1cb168 CR3: 00000000353f0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_decrease_refcount+0x573/0x730 fs/ocfs2/refcounttree.c:2312 ocfs2_remove_btree_range+0x11c0/0x1540 fs/ocfs2/alloc.c:5791 ocfs2_commit_truncate+0xb64/0x21d0 fs/ocfs2/alloc.c:7373 ocfs2_truncate_file+0xca2/0x1420 fs/ocfs2/file.c:509 ocfs2_setattr+0x1520/0x1b40 fs/ocfs2/file.c:1212 notify_change+0xb36/0xe40 fs/attr.c:552 do_truncate+0x19a/0x220 fs/open.c:65 handle_truncate fs/namei.c:3501 [inline] do_open fs/namei.c:3884 [inline] path_openat+0x306c/0x3830 fs/namei.c:4039 do_filp_open+0x1fa/0x410 fs/namei.c:4066 do_sys_openat2+0x121/0x1c0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_creat fs/open.c:1522 [inline] __se_sys_creat fs/open.c:1516 [inline] __x64_sys_creat+0x8f/0xc0 fs/open.c:1516 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9d9dd8e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9d9ebc4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f9d9dfb6080 RCX: 00007f9d9dd8e969 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 00002000000002c0 RBP: 00007f9d9de10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9d9dfb6080 R15: 00007ffeb64bb688 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_decrease_refcount+0x1603/0x1780 fs/ocfs2/refcounttree.c:2242 Code: fe c6 05 07 19 cb 0b 01 90 48 c7 c7 40 5b aa 8b e8 52 34 e6 fd 90 0f 0b 90 90 e9 a7 eb ff ff e8 43 6c b8 07 e8 ae d7 21 fe 90 <0f> 0b e8 a6 d7 21 fe 90 0f 0b e8 9e d7 21 fe 90 0f 0b e8 96 d7 21 RSP: 0018:ffffc9000d3b6880 EFLAGS: 00010287 RAX: ffffffff839e1a22 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e613000 RSI: 0000000000004b6e RDI: 0000000000004b6f RBP: ffffc9000d3b6b40 R08: ffff88801f6da440 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000002 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc9000d3b6930 R15: 0000000000000001 FS: 00007f9d9ebc46c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555b9e1cb168 CR3: 00000000353f0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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 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