linux-ext4 - [Bug 215932] New: kernel hangs after mounting the image

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Message-ID: <bug-215932-13602@https.bugzilla.kernel.org/>
Date:   Mon, 02 May 2022 06:24:20 +0000
From:   bugzilla-daemon@...nel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 215932] New: kernel hangs after mounting the image

https://bugzilla.kernel.org/show_bug.cgi?id=215932

            Bug ID: 215932
           Summary: kernel hangs after mounting the image
           Product: File System
           Version: 2.5
    Kernel Version: 5.17.5
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
          Assignee: fs_ext4@...nel-bugs.osdl.org
          Reporter: yanming@....edu.cn
        Regression: No

Created attachment 300866
  --> https://bugzilla.kernel.org/attachment.cgi?id=300866&action=edit
compressed image

I have mounted a Ext4 image with several mount options. When I try to create a
file on the mount point, the kernel hangs. The process even cannot be killed. I
am wondering whether there is a bug in the file system?

This issue can be reproduced by running the following commands:
losetup /dev/loop0 case.img
mount -o
"acl,oldalloc,user_xattr,jqfmt=vfsv1,nojournal_checksum,nobarrier,inode_readahead_blks=8,journal_ioprio=7,auto_da_alloc,init_itable=0,noblock_validity,dioread_lock,minixdf,errors=remount-ro"
/dev/loop0 /mnt/test/
touch /mnt/test/test

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