From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 77FD2195 for ; Sat, 12 Apr 2025 03:16:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744427784; cv=none; b=Q5GuCiIRRQNCTfZUwg7/FacDgKn42onwNKwCawdEScDUinivlX443azNp6tmWssDvQatgc9ssbmrwtwXl5cqC8sQyc69wOu5sy2KG95K9awgKyQLVTiIJqyh8TjP6WFYshX/cl3ofAG9IdMyotittHaIOuQ5MzkLUCtuIidTwBo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744427784; c=relaxed/simple; bh=AgDXfnsTK8+YguBIAfkD2mLlbxgmGPX/sqDsMJs5mRk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=IH16oG4bpi7+Vbq43qhVsCPeGsbMl2sTuqb982ImGew2drun+wqknFo+nFdqhHrD27NOM2dpUJlv8nKLy1rsd9nXIhTq/DwjgMFMpMLh08ixzKhRQw+r7V31xgNRwcuHmvT5AKwIN19ZF6Vk4cdbDvFRvcNccHgcdAeiSamBo00= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-3d438be189bso24787005ab.3 for ; Fri, 11 Apr 2025 20:16:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744427781; x=1745032581; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=r6zi2RrzRY7UuAAecIJ8rYOOGjA2CcvwJYV7rTH538w=; b=goa+UkTOsHZ94c3w3gQXKZAA7uNCPJeJ8B39ful710CzzZNTqFpGRPooGsgDZcMld0 tCplU8FigP4kp57T6/ZF8egQ2YEgCZ73FyCxIdgSgelL5ZAjY2bMs8VpbD+Jc6tDWP7Y KzEabhvibEyftl82/UPETeKS+OrmQr3VB/OpAm5cP96eVEYt59ERrqYh9Fcf8gPtQ1I/ 45QnUrJqdZEJX+yiYPpYbVZm8iciFB7+MadPTgx/F7jLIIgNniS/HV6cYZGsZlTYjmbC Zs4gl89OjmZb23fFIFHQbmCB4FPrEgbD46POXUEsrITcQmUzbI3Ucu14yMX7jk040pco IMPw== X-Forwarded-Encrypted: i=1; AJvYcCV7FpQHHpB3Rf815eG0fVTliJGz1foLMFCqbeCQ9c58nBpocVjQEFKiD1ZfP5tZ7oIJzDdbuPKk7RZS2ws=@vger.kernel.org X-Gm-Message-State: AOJu0YynYUOBWW+uMj2guIPRwyrLOc4l3Zll71oNXPeKSlTyTCQFVEKC r8IW65ou9D3AcjnWZRuEtn7OyxA8HzBfTXtJOVIAvDr42gTTSTAn2qgMQtc3/o/jgVIuQloTQmH QpaOrp9nwtZmIsXUMgMJCAVDMzY3atvZnaRra8Azw27xzyTCfLCEAhBw= X-Google-Smtp-Source: AGHT+IEq826wkvnIK8SjQD79IkL4KhtGSaNCTmn1wcJNjdchRYnl5H3yFn0YXsQe6TF4pKOrIeC4ehQfzIN5dEIbI7nIlo+i8ZqJ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2603:b0:3d5:d6ad:286a with SMTP id e9e14a558f8ab-3d7ec225f5amr50705875ab.13.1744427781538; Fri, 11 Apr 2025 20:16:21 -0700 (PDT) Date: Fri, 11 Apr 2025 20:16:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67f9db05.050a0220.379d84.0004.GAE@google.com> Subject: [syzbot] [f2fs?] kernel BUG in f2fs_put_super (3) From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, 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: 0af2f6be1b42 Linux 6.15-rc1 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=11464c04580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cd7cb758c9c7b24c dashboard link: https://syzkaller.appspot.com/bug?extid=1badb065d3258a08f5e2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d136202c0eb5/disk-0af2f6be.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3adf5299bf86/vmlinux-0af2f6be.xz kernel image: https://storage.googleapis.com/syzbot-assets/3f351885eecb/Image-0af2f6be.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1badb065d3258a08f5e2@syzkaller.appspotmail.com F2FS-fs (loop2): detect filesystem reference count leak during umount, type: 9, count: 4 ------------[ cut here ]------------ kernel BUG at fs/f2fs/super.c:1674! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6486 Comm: syz-executor Not tainted 6.15.0-rc1-syzkaller-g0af2f6be1b42 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : f2fs_put_super+0xea4/0xef0 fs/f2fs/super.c:1672 lr : f2fs_put_super+0xea4/0xef0 fs/f2fs/super.c:1672 sp : ffff8000a0c17960 x29: ffff8000a0c17a50 x28: ffff8000a0c17980 x27: dfff800000000000 x26: ffff700014182f30 x25: ffff0000cac24000 x24: 0000000000002ff5 x23: ffff0000cc3a6087 x22: ffff0000cc3a6087 x21: 0000000000000004 x20: 0000000000000009 x19: ffff0000c6fc0000 x18: 0000000000000008 x17: 00000000fffffffa x16: ffff8000833376cc x15: 0000000000000001 x14: 1ffff00014182e60 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : 6e36701c3beb6900 x8 : 6e36701c3beb6900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a0c16fd8 x4 : ffff800090035280 x3 : ffff8000832c7c3c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000058 Call trace: f2fs_put_super+0xea4/0xef0 fs/f2fs/super.c:1672 (P) generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 kill_f2fs_super+0x2b4/0x590 fs/f2fs/super.c:5032 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1435 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442 task_work_run+0x230/0x2e0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: aa1303e0 2a1f03e1 2a1403e3 97ff825f (d4210000) ---[ 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