From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 E662323CE for ; Sat, 25 May 2024 03:50:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716609023; cv=none; b=Eq1u/1V2zPSkhAFDJy22ioJ/DbJW53a84dvrdigMCH963Htw49GAfhOUAma8dYg4Hzp5Rbk8MJ4yzafzYsC7DPvPYkSO8HjlDKSrMBvfPYZsA0/0mzFs2SAqa8bm0wkesnR9Ib/HogqBZT9BRX//GO+sWPXwIFyyTq8puKwJviU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716609023; c=relaxed/simple; bh=04e0iFaLdmXGkZM8lqn+cCR6xiFvZ0L31j1DmpefSIo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=OwzZUqjbAEtsglyccsbRZes5hdH82jkdzDmXiXlsjwBXpBixzs2iFzQLl359Gw5T6612xhigzixmL8Qr5iGB/NqIAhTJlJ6HNQ56JAEV3MqP91zmBsmWcKZ7us1PhbQTvG7r++h8U1AL4A9Jz/kkF4sM35z1XUItCohSufuP490= 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=209.85.166.205 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-il1-f205.google.com with SMTP id e9e14a558f8ab-3737b3db665so16726025ab.3 for ; Fri, 24 May 2024 20:50:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716609021; x=1717213821; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QKPNbdGh9u9aMJeo1SjEg9KsR8vOcDWPVbRPuND0hu4=; b=GbGDK4WgiB/o+arA/MIMVIoERCkfNGocszifXYDQPHBvqaZTvjMvlYHIu0ylEHGKT+ 81JuNtwcEe+M0wujUYhWGnjWtESjaxS+klAilATrvDOukPZI1vb/jep7ZYDun+ncaDzA eZP3hVTk5+i2hmAUt2NItmtK+PiAA0qt+I9PDsrMQVapH4IjaF/7samnvBoF0XSroOCQ pls/yHealy6rj/hdqjQ6IsVVbXy6lryzxKSMGd1sXnd41KObwCIOXhyiflDpcJFcgY33 f/bSvHMFAeXzJng2Xea8Sqi9PknFmiVSEs08qI4pC+DBzC5Qy/RfnJc1HE5zOnZElJcj aNTA== X-Forwarded-Encrypted: i=1; AJvYcCUuGNgSD8fUcQ/re9/k6sKd/1H426P4QyM35Re7NNxD+zwRGbtEZXh7snOcd/tXXGmMc2AmVdEHUA5LOlO7M32llj2WEk1+knamF1vdvtI= X-Gm-Message-State: AOJu0YyrZkPyKVp3tf3DiEAV+2EercIqSaEXt0FFAyeNhBxNUoDggQD+ 1oqk1aq1QKVDMoPuE7WJ+1jpzsrniJIZbtkngHgbtq3U+RER+p0MOL4qcNWFIANhtDWgAVc/hXi BWKjNG8tCVFcYCwu2p2DocjIUu00yZzhzVchgo4DMASmKR99UcMqGRqo= X-Google-Smtp-Source: AGHT+IF7TcmogvrdNsmxOquvj+MVvTJgA3T0scIpC00VYn64lUjbviyQ8Gk7LvqUQ85n7AWGIU1dX8i9UryPKmu5j7Fbwt5Y87oH Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c8d:b0:36d:a793:51a with SMTP id e9e14a558f8ab-3737b330202mr2949695ab.3.1716609021228; Fri, 24 May 2024 20:50:21 -0700 (PDT) Date: Fri, 24 May 2024 20:50:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000edcc7906193f2e93@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_fs_release From: syzbot To: bfoster@redhat.com, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6e51b4b5bbc0 Merge tag 'mips_6.10' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1499dbe4980000 kernel config: https://syzkaller.appspot.com/x/.config?x=5d5d254b2919253a dashboard link: https://syzkaller.appspot.com/bug?extid=a8074a75b8d73328751e compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-6e51b4b5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4a78abf5bef3/vmlinux-6e51b4b5.xz kernel image: https://storage.googleapis.com/syzbot-assets/283fe971fc00/bzImage-6e51b4b5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a8074a75b8d73328751e@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 workqueue: Failed to create a rescuer kthread for wq "bcachefs": -EINTR bcachefs (076a1832-646e-4f3c-b13d-b3e266154efd): shutdown complete ------------[ cut here ]------------ kernel BUG at fs/bcachefs/super.c:567! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 6873 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-09868-g6e51b4b5bbc0 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__bch2_fs_free fs/bcachefs/super.c:567 [inline] RIP: 0010:bch2_fs_release+0x6b0/0x810 fs/bcachefs/super.c:603 Code: 89 ee e8 63 7d 7b fd 48 85 ed 75 34 e8 29 82 7b fd 31 ff 4c 89 ee e8 4f 7d 7b fd 4d 85 ed 0f 84 02 fc ff ff e8 11 82 7b fd 90 <0f> 0b e8 09 82 7b fd 48 8b 7c 24 10 e8 7f 63 d9 ff e9 cb fa ff ff RSP: 0000:ffffc9000e047410 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888061080068 RCX: ffffc90003f21000 RDX: 0000000000040000 RSI: ffffffff8412febf RDI: 0000000000000007 RBP: 0000000000000008 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e8fb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000edabe000 CR3: 00000000120f0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1fa/0x5b0 lib/kobject.c:737 bch2_fs_alloc+0xe49/0x2550 fs/bcachefs/super.c:954 bch2_fs_open+0x713/0x10f0 fs/bcachefs/super.c:2102 bch2_mount+0xd41/0x1090 fs/bcachefs/fs.c:1917 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1779 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf729d579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e8f400 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f5e8f460 RCX: 0000000020000080 RDX: 0000000020011a00 RSI: 0000000001200014 RDI: 00000000f5e8f4a0 RBP: 00000000f5e8f460 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_fs_free fs/bcachefs/super.c:567 [inline] RIP: 0010:bch2_fs_release+0x6b0/0x810 fs/bcachefs/super.c:603 Code: 89 ee e8 63 7d 7b fd 48 85 ed 75 34 e8 29 82 7b fd 31 ff 4c 89 ee e8 4f 7d 7b fd 4d 85 ed 0f 84 02 fc ff ff e8 11 82 7b fd 90 <0f> 0b e8 09 82 7b fd 48 8b 7c 24 10 e8 7f 63 d9 ff e9 cb fa ff ff RSP: 0000:ffffc9000e047410 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888061080068 RCX: ffffc90003f21000 RDX: 0000000000040000 RSI: ffffffff8412febf RDI: 0000000000000007 RBP: 0000000000000008 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e8fb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000edabe000 CR3: 00000000120f0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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