From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 BEAA21CD24 for ; Fri, 28 Jun 2024 03:49:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719546562; cv=none; b=oYLi4fQPLY2TJ0+YuHtQZfwCOgZ2+qyIyOPOHOeWRo84z72IwujWIevxyXTXq2DRGuN8dHGetFJxjxeiziWbW1sPidE8d711CzpcHcRntDC51XDhCqgtwfY4qPvh/HpL2ok7Z2bvLHMr/QwK10J33C+M23UPcOB0IJvvdeLThAs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719546562; c=relaxed/simple; bh=4Ez0imzoqhZIdaqAVS88s2ruIY/vU2ZK5QKbU0p7CbY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=u4hT49OtZsfrwBTfmwMAjIwnC+7aUUSFeagu09Wr9raZQVRkIFhQeNzRjwbMEcLywTVBvKS0OBScdh27itRO+wSUEJGZLkHaRxFVLu4yIC8EmIEAL7jpWaUhzLPE1ITBEION5ib8cCxSoH1rJaYi59Wa+FpURwP0HU3RV9jg+4w= 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=209.85.166.207 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-f207.google.com with SMTP id e9e14a558f8ab-376282b0e2bso2530875ab.1 for ; Thu, 27 Jun 2024 20:49:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719546560; x=1720151360; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=8JwdNQNfgAC6JzHWGdFGw8Z+WdShuiruUP5M7wkwIME=; b=jeAW6Mk1igSXU2usDpc0uhzY1hMbUfDdv0Bu7p2sz8KQZsRdO88e8gzWzMVlVVID3m nq/y8Vq/Z6pOGgsw2p2XZIED5JtNXL4H1xqquVehyGfU8XZf3/amp3WaX+/sXFwCWZl/ T8cPIU4hksYwrs9g4X17DEtI/SHUGFvB0rMbVi+MYs+kd36YTlY5PhgFhYiBP4eC8T7E OxpD85ZMHV8re8APXlkSQ2tqBpunpES1fXDtdA0bpicSTEM+wY3pReC7ewj0wyDv5qsP 5tPeOlj9V6LCkq2439B4J6yzudn3eHPRuUwP8KOb+BxxcT4tfmLx6iSKmk9eXBbPut6S SyAA== X-Forwarded-Encrypted: i=1; AJvYcCW1Qb/1PN8mQUefyzEDyRnJZ6WmKsXioJmfaLhbacW6jyQtYX/rMdDt77log+okAa/ujk1jZxrYQQsevbhnAlQI5UKftXnDby4iZr4QXZI= X-Gm-Message-State: AOJu0Yx81t+V7i+ILn4m62pkuR68HHE3sJQ7xIAP9jbSqy2vdrBeQlEz nCeDPeyxeuEFgel6uNkjRUBOqdfJeOH4YXQ5/dPDxkPMo53v1VxqqhrzsZRT2zoDksnZS/Ialow AZ//yEICFM0n3PB9rrcVTKXuJZiv3o2GcHFt0Ly8iSu2K3rihV3JoCoo= X-Google-Smtp-Source: AGHT+IEkL5gP1IvIpaLOnicTHd8Z6eZvBNeImYEDjaKPNLyjvTjKkfkc3XxebFdZD1YGsey8BlMlvF8le/v7EKcIVT5lP1Ba8rbO Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:ced2:0:b0:379:86a8:e438 with SMTP id e9e14a558f8ab-37986a8e630mr1580725ab.2.1719546559890; Thu, 27 Jun 2024 20:49:19 -0700 (PDT) Date: Thu, 27 Jun 2024 20:49:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e097b1061beb2182@google.com> Subject: [syzbot] [bcachefs?] kernel BUG in bch2_fs_release (2) 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: f2661062f16b Linux 6.10-rc5 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=159df741980000 kernel config: https://syzkaller.appspot.com/x/.config?x=53ab35b556129242 dashboard link: https://syzkaller.appspot.com/bug?extid=9db8552458d57264a358 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-f2661062.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c8274ddce14a/vmlinux-f2661062.xz kernel image: https://storage.googleapis.com/syzbot-assets/e3623ed3bb77/bzImage-f2661062.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9db8552458d57264a358@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/bcachefs/super.c:567! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 5232 Comm: syz-executor.1 Not tainted 6.10.0-rc5-syzkaller #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+0x722/0x870 fs/bcachefs/super.c:605 Code: 89 ee e8 c1 85 79 fd 4d 85 ed 75 20 e8 87 8a 79 fd 31 ff 4c 89 f6 e8 ad 85 79 fd 4d 85 f6 0f 84 4f fb ff ff e8 6f 8a 79 fd 90 <0f> 0b e8 67 8a 79 fd bf 07 00 00 00 f3 49 0f bc c5 89 c6 41 89 c5 RSP: 0018:ffffc90002f47d38 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888060900068 RCX: ffffffff84150573 RDX: ffff888020248000 RSI: ffffffff84150581 RDI: 0000000000000007 RBP: ffff888060900000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000607f8106a5d8 R13: 0000000000000008 R14: 0000000000000001 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:0000000057322400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000032434000 CR3: 0000000047630000 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 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 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+0x278/0x2a0 kernel/entry/common.c:218 __do_fast_syscall_32+0x80/0x120 arch/x86/entry/common.c:389 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf72c2579 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:00000000ff88f5f8 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ff88f6a0 RCX: 0000000000000009 RDX: 00000000f7418ff4 RSI: 00000000f7369361 RDI: 00000000ff890744 RBP: 00000000ff88f6a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 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+0x722/0x870 fs/bcachefs/super.c:605 Code: 89 ee e8 c1 85 79 fd 4d 85 ed 75 20 e8 87 8a 79 fd 31 ff 4c 89 f6 e8 ad 85 79 fd 4d 85 f6 0f 84 4f fb ff ff e8 6f 8a 79 fd 90 <0f> 0b e8 67 8a 79 fd bf 07 00 00 00 f3 49 0f bc c5 89 c6 41 89 c5 RSP: 0018:ffffc90002f47d38 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888060900068 RCX: ffffffff84150573 RDX: ffff888020248000 RSI: ffffffff84150581 RDI: 0000000000000007 RBP: ffff888060900000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000607f8106a5d8 R13: 0000000000000008 R14: 0000000000000001 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:0000000057322400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000032434000 CR3: 0000000047630000 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