This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-focal

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1908498

Title:
  ip_defrag.sh in net from ubuntu_kernel_selftests failed with Resource
  temporarily unavailable on F-oem-5.6

Status in ubuntu-kernel-tests:
  In Progress
Status in linux-oem-5.6 package in Ubuntu:
  Invalid
Status in linux-oem-5.6 source package in Focal:
  Fix Committed

Bug description:
  [Impact]
  Failure to run ip_defrag deterministically.
   # selftests: net: ip_defrag.sh
   # ipv4 defrag
   # PASS
   # seed = 1608066927
   # ipv4 defrag with overlaps
   # PASS
   # seed = 1608066928
   # ipv6 defrag
   # PASS
   # seed = 1608066933
   # ipv6 defrag with overlaps
   # PASS
   # seed = 1608066933
   # ipv6 nf_conntrack defrag
   # seed = 1608066941
   # ./ip_defrag: recv: payload_len = 9990 max_frag_len = 8: Resource 
temporarily unavailable
   not ok 18 selftests: net: ip_defrag.sh # exit=1

  [Fix]
  * 065fcfd49763ec ("selftests: net: ip_defrag: ignore EPERM")
  Use smaller packets and ignore EPERM.

  This fix has already landed on other generic kernels in bug 1826848

  [Test case]
  Run the ip_defrag.sh multiple times without observing failures.

  [Where problems could occur]
  Fix is limited to the testing tool, it won't affect kernel functionality but 
the worst case is if the test fix is incorrect, it will cause us to miss real 
kernel bugs.

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