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[Bug 1650336] Re: NFS client : kernel 4.4.0-57 crash with nfsv4 enries in /etc/fstab

 

** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Released

** Changed in: linux (Ubuntu Xenial)
     Assignee: Joseph Salisbury (jsalisbury) => Seth Forshee (sforshee)

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https://bugs.launchpad.net/bugs/1650336

Title:
  NFS client : kernel 4.4.0-57 crash with nfsv4 enries in /etc/fstab

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  In Progress

Bug description:
  SRU Justification

  Impact: A commit from upstream 4.4 stable introduced a regression in
  refcounting auth_gss messages which can lead to an oops.

  Fix: Cherry pick upstream commit
  1cded9d2974fe4fe339fc0ccd6638b80d465ab2c "SUNRPC: fix refcounting
  problems with auth_gss messages."

  Regresssion Potential: Test results confirm that the commit fixes an
  existing regression. It's pretty straightforward and is already
  present in some upstream stable kernels, so I think the potential for
  regressions is minimal.

  ---

  On (K)ubuntu 16.04.01 (Xenial) Upgrading to kernel 4.4.0-57 the kernel
  crash on boot when in /etc/fstab a nfsv4 entry is active

  When comment the line or set to noauto the kernel boot with no error
  and mounting the nfs shares (after uncomment ) is also possible
  without error

  4.4.0-54 boots without this problem.

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