** Changed in: linux (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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

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https://bugs.launchpad.net/bugs/1842479

Title:
  timer_create will fail with invalid error code

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Disco:
  Won't Fix
Status in linux source package in Eoan:
  Won't Fix

Bug description:
  [Impact]
  On some OpenPower systems, RTC does not support set_alarm, and 
timer_create(CLOCK_REALTIME_ALARM, ...) will fail with ENOTSUPP instead of 
EOPNOTSUPP. This will break some regression testing that expects the later 
value.

  [Test cases]
  Run LTP syscalls regression testing, which we do before releasing kernels.

  [Regression potential]
  This should not break any userspace, as none should be using/expecting 
ENOTSUPP for any call. In order to do so, they would have to go out of their 
way as it's not defined on libc headers.

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