[f2fs-dev] [Bug 215900] New: kernel hangs when running commands on F2FS file system

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215900

            Bug ID: 215900
           Summary: kernel hangs when running commands on F2FS file system
           Product: File System
           Version: 2.5
    Kernel Version: 5.17
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: f2fs
          Assignee: filesystem_f2fs@kernel-bugs.kernel.org
          Reporter: yanming@tju.edu.cn
        Regression: No

Created attachment 300824
  --> https://bugzilla.kernel.org/attachment.cgi?id=300824&action=edit
case.c

I have mounted a F2FS image on the Linux system. When I was performing file
operations on the mounted directory, the kernel hangs. I tried to kill the
running process but failed. Any operations on the directory have no response. I
am wondering whether a deadlock is in the kernel.

This issue can be reproduced by running the following scripts:

gcc -o case case.c
losetup /dev/loop0 case.img
mount -o
"disable_ext_identify,inline_data,nobarrier,extent_cache,grpquota,fsync_mode=nobarrier,test_dummy_encryption"
-t f2fs /dev/loop0 /root/mnt
./case

The image can be found at
(https://drive.google.com/file/d/1bjCQR_-Sz6iF_wshMGU3wWZDQ8tQIFdj/view?usp=sharing)

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