[Bug 2065856] Re: SEGFAULTs in v4.3 with GlusterFS

[Christian Ehrhardt ]

State -> incomplete only as I wait for your answers - set it back to new
or confirmed once provided.

Thanks in advance!
Christian

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Title:
  SEGFAULTs in v4.3 with GlusterFS

Status in nfs-ganesha package in Ubuntu:
  Incomplete
Status in nfs-ganesha source package in Mantic:
  Won't Fix
Status in nfs-ganesha source package in Noble:
  Incomplete
Status in nfs-ganesha source package in Oracular:
  Incomplete

Bug description:
  [ Impact ]

   * Users experience SEGFAULTs when Ganesha fails to communicate with
  Gluster, causing the NFS share to disappear.

   * The patch refactors how free_space() is called to avoid the null
  pointer deference.

  [ Test Plan ]

   * I experienced crashes about once per day on volumes with heavy
  large file random access. I've been running the proposed patch since
  2024-05-16 and haven't experienced a single crash.

   * The test plan is to run the packages from proposed for at least 5
  days, under the same load as when the bug happened, and confirm that
  the crashes reported in this bug no longer happen.

  [ Other Info ]

   * Commit which added this patch: https://github.com/nfs-ganesha/nfs-ganesha/commit/336abcba0b9e0dae0aadb4657c311d04862f2028
   * Issue discussion: https://github.com/nfs-ganesha/nfs-ganesha/issues/904

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