[Bug 988055] Re: rpc.gssd memory leak

Adam Stokes adam.stokes at canonical.com
Tue Sep 18 17:29:18 UTC 2012

** Changed in: nfs-utils (Ubuntu)
   Importance: Undecided => High

** Changed in: nfs-utils (Ubuntu)
     Assignee: (unassigned) => Adam Stokes (adam-stokes)

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  rpc.gssd memory leak

Status in “nfs-utils” package in Ubuntu:

Bug description:
  rpc.gssd appears to be leaking a small amount of memory every time
  it's used to authenticate a kerberized nFS mount.  I can reproduce by

  while sleep 1; do mount -o sec=krb5 nfsserver:/remotepath /mnt; umount
  /mnt; done

  While running this in a loop, you can observe from rpc.gssd's
  /proc/<pid>/status file that its VmRSS grows indefinitely, generally
  by about 4 kB per mount request.  On some of our servers that have a
  high turn-over rate of kerberized NFS mounts, we've seen the rpc.gssd
  process grow to more than 600 MB!

  This happens on lucid with nfs-common 1:1.2.0-4ubuntu4.2.

  I haven't been able to reproduce on precise with nfs-common
  1:1.2.5-3ubuntu3, but this is still an important bug for lucid.

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