[f2fs-dev] [Bug 215929] New: kernel deadlocks while performing file operations

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215929

            Bug ID: 215929
           Summary: kernel deadlocks while performing file operations
           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 300864
  --> https://bugzilla.kernel.org/attachment.cgi?id=300864&action=edit
case.c, contains file operations

I'd mounted a F2FS image with several mount options. When I was performing file
operations on the mount point, the kernel hangs, and the process cannot be
killed.

The file operations are in case.c, and the image is provided at
(https://drive.google.com/file/d/1be1SyKJwBWvQKSnhD0Y05ZquEIPT62-W/view?usp=sharing).

This issue can be reproduced by running the following commands:
losetup /dev/loop0 case.img
mount -o
"background_gc=sync,active_logs=4,disable_ext_identify,inline_dentry,data_flush,fsync_mode=posix"
/dev/loop0 /mnt/test/
gcc -o case case.c
./case

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