From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (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 AC4DC82C60 for ; Sun, 19 Jan 2025 22:03:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737324214; cv=none; b=NoF2q0TCV3Onkc17IufUc/Tue0xjUuK7Dq8guuV1FgANxv6Zg/t1zSK1Oiu9mRRtd9kTzyxD9NJafTcS3Xlw0P0klkRS1jaILkuJYnGyQzbF0iOMVZD54M9Q+i2md8RczdZmEU0TobaN45/tb2JjuCTXpSJ2eQ9LJZS3f4LYe7k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737324214; c=relaxed/simple; bh=kcTBnACwqiR5RhIh5GQJXoRfg+nATtusZG4ye1SwuJo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=YzWkvFP5Eqtxo5lHSAP2JgkYfTgp+HvTgKTF0dQfEYvZtgIcqTSc4D2e7SkP7o0t6lULXAMinr2rOgj1vN5zl3LY+f91+uHYZ0RkReH8dhK6JjiFOq6KM7WUSQ2Gp7FpEek+zWA4nmSaoTlxh+rgKE+aievwYLvDp6bnz+FL+TI= 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=209.85.166.79 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-f79.google.com with SMTP id ca18e2360f4ac-844d54c3e74so263098739f.1 for ; Sun, 19 Jan 2025 14:03:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737324212; x=1737929012; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=BlqWaevAUucuVz/opMtu0ru8kwaa7JZP5AgG2JxrB8o=; b=duK2XKdfxv4H0qa/nXw9OnJFgJkZ1G7a5AckX1oESZx+h4L4HJrit8YeMuIzyP4Nk4 7ZNyCzUwvT7qhu3ImuDmIx2FEiIJ0C+va5+EsGV0qFKbAGZ5sl7QPE74yqImv8x+lFvw xWFVCdOI9rTNebnfdjZNl9KYq8JksczJci5nkiaa3lYrThCam10cgVNyGZry+QMqIipd 2vRvWaxU9GTAvGLkEE4ZGImcdIr5oEUD1WL1L6DQUDlX/JVcyF/SvVd97HFXeDv+73Lq j8+hV0jr43yhNBVCi3TEd/XBRUaiqv6LPFFIXkhrcpvVZZETfyOmgm6JlcobTa5WUg3t zlGQ== X-Forwarded-Encrypted: i=1; AJvYcCXm9APXwyxgqvCc5rtyRFO/AqYJO12jC4WlUr5vCj222us9IhgZCvt55WidOjpsJItZkTWUiJrOs0D6pT0=@vger.kernel.org X-Gm-Message-State: AOJu0Yyfymrje/Lc2lkCzQ6Y6lDT6lurThkvo040Ap2xG7klcUU99Tak GSLOUCJNuTxavNWrzJaEDleEyn9WPlbI223Me/GJZpi3Sa3wZ8JRFB2WFuoKXvMGqpgtIlkNZzW TIlX2i/GPADlKcUt0/4epWdtQDFhk4ZrUbAOLbdD6gssUfyrJEWD4Lyk= X-Google-Smtp-Source: AGHT+IFwOUUB/gy9lZmJApPHDXcGZ1QWs+KOZn1hq5/YWfO/Ft77Tc9feVUG50atALQue624QKobatc5W0izjFP4s6pYWYyMz6W5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:219b:b0:3ce:665b:cdf7 with SMTP id e9e14a558f8ab-3cf7447c268mr71889605ab.14.1737324211835; Sun, 19 Jan 2025 14:03:31 -0800 (PST) Date: Sun, 19 Jan 2025 14:03:31 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <678d76b3.050a0220.303755.0060.GAE@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_fs_btree_cache_exit (2) From: syzbot To: 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: 619f0b6fad52 Merge tag 'seccomp-v6.13-rc8' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1484fcb0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c676c8e1379fdfaa dashboard link: https://syzkaller.appspot.com/bug?extid=cb21e918562a9fa8ba88 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a9c9c3056af4/disk-619f0b6f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/558f94c52108/vmlinux-619f0b6f.xz kernel image: https://storage.googleapis.com/syzbot-assets/595b7ae81ee0/bzImage-619f0b6f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cb21e918562a9fa8ba88@syzkaller.appspotmail.com bcachefs (loop0): shutdown complete ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_cache.c:608! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 9344 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-00043-g619f0b6fad52 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:bch2_fs_btree_cache_exit+0x1449/0x1530 fs/bcachefs/btree_cache.c:607 Code: fd 90 0f 0b e8 c8 53 89 fd 90 0f 0b e8 c0 53 89 fd 90 0f 0b e8 b8 53 89 fd 90 0f 0b e8 b0 53 89 fd 90 0f 0b e8 a8 53 89 fd 90 <0f> 0b e8 a0 53 89 fd 90 0f 0b e8 98 53 89 fd 90 0f 0b e8 90 53 89 RSP: 0000:ffffc90002f07c38 EFLAGS: 00010293 RAX: ffffffff84161e78 RBX: 0000000000001000 RCX: ffff88802e72da00 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000000 RBP: ffff888029cec8b0 R08: ffffffff841613ec R09: 1ffff1100539d916 R10: dffffc0000000000 R11: ffffed100539d917 R12: ffff888029ceca28 R13: ffff88803009ba28 R14: 1ffff1100539d916 R15: 1ffff1100539d945 FS: 000055557c781500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f53d8c51000 CR3: 000000004c752000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bch2_fs_free fs/bcachefs/super.c:557 [inline] bch2_fs_release+0x20e/0x7d0 fs/bcachefs/super.c:611 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22f/0x480 lib/kobject.c:737 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fca2c387057 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:00007fffeac39e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fca2c387057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffeac39f30 RBP: 00007fffeac39f30 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffeac3afb0 R13: 00007fca2c4018f4 R14: 00007fffeac3aff0 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- --- 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