SRU request submitted:
https://lists.ubuntu.com/archives/kernel-team/2018-June/093315.html

** Description changed:

+ == SRU Justification ==
  Description:  kernel: Fix memory leak on CCA and EP11 CPRB processing.
  Symptom:      Kernel memory not freed when CCA or EP11 CPRB processing fails.
  Problem:      kfree() in code error path missing.
  Solution:     Slight rework of the malloc and free places.
  Reproduction: Run application which sends CCA or EP11 crypto requests
-               to the crypto card(s). Now switch the cards offline with
-               the help of chzcrypt. Monitor top or free output.
+               to the crypto card(s). Now switch the cards offline with
+               the help of chzcrypt. Monitor top or free output.
  
  Upstream commit(s): kernel 4.18
  89a0c0ec0d2e3ce0ee9caa00f60c0c26ccf11c21
+ 
+ == Fix ==
+ 89a0c0ec0d2e ("s390/zcrypt: Fix CCA and EP11 CPRB processing failure memory 
leak.")
+ 
+ == Regression Potential ==
+ Low.  Limited to s390.
+ 
+ == Test Case ==
+ Verified upfront by IBM during upstream integration.

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https://bugs.launchpad.net/bugs/1775390

Title:
  kernel: Fix memory leak on CCA and EP11 CPRB processing.

Status in Ubuntu on IBM z Systems:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Bionic:
  In Progress

Bug description:
  == SRU Justification ==
  Description:  kernel: Fix memory leak on CCA and EP11 CPRB processing.
  Symptom:      Kernel memory not freed when CCA or EP11 CPRB processing fails.
  Problem:      kfree() in code error path missing.
  Solution:     Slight rework of the malloc and free places.
  Reproduction: Run application which sends CCA or EP11 crypto requests
                to the crypto card(s). Now switch the cards offline with
                the help of chzcrypt. Monitor top or free output.

  Upstream commit(s): kernel 4.18
  89a0c0ec0d2e3ce0ee9caa00f60c0c26ccf11c21

  == Fix ==
  89a0c0ec0d2e ("s390/zcrypt: Fix CCA and EP11 CPRB processing failure memory 
leak.")

  == Regression Potential ==
  Low.  Limited to s390.

  == Test Case ==
  Verified upfront by IBM during upstream integration.

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