[Bug 2065856] Re: SEGFAULTs in v4.3

[Nick O'Connor]

** Description changed:

  [ 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, but it doesn't seem to fix the issue on v4.3. I'm
- unsure of how to fix this issue without upgrading this package to v5 or
- later.
+ pointer deference.
  
  [ Test Plan ]
  
   * The triggers for the issue are difficult to replicate and have to do
  with the timing of Ganesha communicating with Gluster.
  
  [ 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

** Patch added: "fix-null-ptr-ref-in-free-space.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/nfs-ganesha/+bug/2065856/+attachment/5779216/+files/fix-null-ptr-ref-in-free-space.debdiff

** Patch removed: "fix-null-ptr-ref-in-free-space.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/nfs-ganesha/+bug/2065856/+attachment/5778939/+files/fix-null-ptr-ref-in-free-space.debdiff

** Summary changed:

- SEGFAULTs in v4.3
+ SEGFAULTs in v4.3 with GlusterFS

** Summary changed:

- SEGFAULTs in v4.3 with GlusterFS
+ SEGFAULTs in v4.3 with Gluster

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https://bugs.launchpad.net/bugs/2065856

Title:
  SEGFAULTs in v4.3 with GlusterFS

Status in nfs-ganesha package in Ubuntu:
  New

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 ]

   * The triggers for the issue are difficult to replicate and have to
  do with the timing of Ganesha communicating with Gluster.

  [ 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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