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 7C9B318C91D for ; Mon, 4 Nov 2024 06:57:04 +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=1730703426; cv=none; b=mWhRFHF24UQO9COQpyp2VUIwAKmswt2eR6GaqxdeP/Tw9hIq8myZD0btJ1pBjcwaC20H3kvz5fdriqL4S9HI4xP5Jre0CjemlkiJkAzB+NplpjZEi3ZwV93DxEV9f///fp95z+9nRWLYFl/tZ10JZf6NvwUHGLxNteZnfRRebw4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730703426; c=relaxed/simple; bh=7u3PVP7XeLnXBb7y0pIyLPAOxq6idjR9oXlLVtoMRWk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=DN6d0+N0XHivwuf7hg8O89jya/qBu/hvCjGvuCoXPARKhkjKMXNY+/itDoLw///Rnfilc6pX6eIx4eRkk2koaxolJn10klyMsClpBIsj2g9bgUVsRrOoFFgiQu2ZSwG5QzYJA85Yl8HmovEBxltwdr2WZSUljpbKHLJduMxEGm8= 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-83abf68e7ffso426254339f.1 for ; Sun, 03 Nov 2024 22:57:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730703423; x=1731308223; 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=cS56byKtsj1CuaOp8CMIOFr+yZjq6JATOWy1qBHCB3Y=; b=EfiVOjJbId+rQAVL+b62MPK4YSYxiDBV04DkkFosm+0KhUlrMHG1d7Fs1dbpTWgy6z LIc5EWt5CWDKUHpiszveGUkiBZgtaliRktc9o1HCsnyzKKs1whZixHHLTt48anGC9zpa HXT+Dq2X6jpB30Nxy83/EyNfpH6zhbTPUPJ9FQMhgby5DgKYNCSVzZGl+p9kB7Q5IjLN /f8xCX5VjR0+zDapE8WginUIoz4KimPyjnGhmhjiPNLD+uoZcjKo08RT/NGcypsXzYF6 X213AojdfXLr/yGsDHs+jylXHG+7/3uOZJDsJhnyrCWKVo1W8CLoVi1X/52NIxVjh/Mc EnPA== X-Forwarded-Encrypted: i=1; AJvYcCXK/Xtps/TrH36G6s7t6aJu+mL6E5I6mJsV7JJYSFNWpV9+xzueugJzj2i+asJHZ3VvXiEpbcU/CHPqNpc=@vger.kernel.org X-Gm-Message-State: AOJu0YxDPVpzUcmxjVmJ6/2N4+oQAv7mxcV2ec7hcZAcADBXWnnV5clG 7t4+JQ1Vh5Dy5+tDL6MvJ9nrefRwHzojLFKEjxadyJy3WlrG2wIx0nYNq19h2nrn7AtWkBD8Kyx OcKPyklzQ6N1GvzNTtzE88I16n3hDKeoPCH+hZjohisupavK9utnwA1k= X-Google-Smtp-Source: AGHT+IF9NRi1wtC75+dFdmgUK+o3W5wazJccOcbwGFbyTRSX9gytRCMUlAFpjg5r+pEv3KgtFTrVdfHpgSJ+4xyJSfyYTUEE8Yeo Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:164d:b0:3a3:4122:b56e with SMTP id e9e14a558f8ab-3a4ed31449emr296904625ab.26.1730703423648; Sun, 03 Nov 2024 22:57:03 -0800 (PST) Date: Sun, 03 Nov 2024 22:57:03 -0800 In-Reply-To: <3c01986b19c041931fe7bb542b1b00069b2e458a.camel@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6728703f.050a0220.35b515.01b1.GAE@google.com> Subject: Re: [syzbot] [ocfs2?] VFS: Busy inodes after unmount (use-after-free) From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, sunjunchao2870@gmail.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: VFS: Busy inodes after unmount (use-after-free) ocfs2: Unmounting device (7,0) on (node local) VFS: Busy inodes after unmount of loop0 (ocfs2) ------------[ cut here ]------------ kernel BUG at fs/super.c:652! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6441 Comm: syz-executor Not tainted 6.12.0-rc6-syzkaller-g59b723cd2adb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 23 ed ff 48 8b 13 48 c7 c7 80 be 18 8c 4c 89 e6 e8 87 3f ad 09 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000354fd20 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8ee531e0 RCX: e6b6b127fe74ba00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f467cf0 R08: ffffffff8174a12c R09: fffffbfff1cf9fd0 R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: ffff88807a33e668 R13: dffffc0000000000 R14: ffffffff8c49f718 R15: ffff88807a33e780 FS: 0000555593ff6500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00221c000 CR3: 0000000060ea2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ed837fa47 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffcdc5c5528 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8ed837fa47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdc5c55e0 RBP: 00007ffcdc5c55e0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcdc5c6660 R13: 00007f8ed83f11cc R14: 000000000001b0d9 R15: 00007ffcdc5c66a0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 23 ed ff 48 8b 13 48 c7 c7 80 be 18 8c 4c 89 e6 e8 87 3f ad 09 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000354fd20 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8ee531e0 RCX: e6b6b127fe74ba00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f467cf0 R08: ffffffff8174a12c R09: fffffbfff1cf9fd0 R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: ffff88807a33e668 R13: dffffc0000000000 R14: ffffffff8c49f718 R15: ffff88807a33e780 FS: 0000555593ff6500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563a27431950 CR3: 0000000060ea2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Tested on: commit: 59b723cd Linux 6.12-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10202d5f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=dc23b43a0f2f7cf7 dashboard link: https://syzkaller.appspot.com/bug?extid=0af00f6a2cba2058b5db compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.