XFS issues "possible memory allocation deadlock in kmem_alloc" messages

Solution Unverified - Updated -

Issue

  • Seeing file system access issues on XFS based file systems.
    dmesg shows continuous entries with:

    XFS: possible memory allocation deadlock in kmem_alloc (mode:0x250)
    

    A reboot to try to run xfs_check kept hanging and a force core dump from virtual serial console was required.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • XFS

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