linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix to drop meta_inode's page cache in f2fs_put

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Date:   Wed, 20 Sep 2023 15:50:25 +0000
From:   patchwork-bot+f2fs@...nel.org
To:     Chao Yu <chao@...nel.org>
Cc:     jaegeuk@...nel.org,
        syzbot+ebd7072191e2eddd7d6e@...kaller.appspotmail.com,
        linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix to drop meta_inode's page cache in
 f2fs_put_super()

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@...nel.org>:

On Tue,  5 Sep 2023 12:57:53 +0800 you wrote:
> syzbot reports a kernel bug as below:
> 
> F2FS-fs (loop1): detect filesystem reference count leak during umount, type: 10, count: 1
> kernel BUG at fs/f2fs/super.c:1639!
> CPU: 0 PID: 15451 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-09338-ge0152e7481c6 #0
> RIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639
> Call Trace:
>  generic_shutdown_super+0x161/0x3c0 fs/super.c:693
>  kill_block_super+0x3b/0x70 fs/super.c:1646
>  kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879
>  deactivate_locked_super+0x9a/0x170 fs/super.c:481
>  deactivate_super+0xde/0x100 fs/super.c:514
>  cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
>  task_work_run+0x14d/0x240 kernel/task_work.c:179
>  resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
>  exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
>  exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
>  __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
>  syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
>  do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
>  entry_SYSCALL_64_after_hwframe+0x63/0xcd
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix to drop meta_inode's page cache in f2fs_put_super()
    https://git.kernel.org/jaegeuk/f2fs/c/a4639380bbe6

You are awesome, thank you!
-- 
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