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apport-collect 1727251

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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1727251

Title:
  ubuntu_lttng_smoke_test failed on A-hwe kernel

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Kernel 4.13.0-16.19~16.04.3

  4 tests failed for the ubuntu_lttng_smoke_test with amd64 / arm64 / i386 / 
ppc64le systems:
   == lttng smoke test of session create/destroy ==
   Session test-kernel-session created.
   Traces will be written in /tmp/lttng-kernel-trace-21869-session
   PASSED (lttng create)
   Session test-kernel-session destroyed
   PASSED (lttng destroy)

   == lttng smoke test list kernel events ==
   Error: Unable to list kernel events: Kernel tracer not available
   Error: Command error
   FAILED (lttng list --kernel)
   FAILED (lttng list --kernel more output expected)

   == lttng smoke test trace open/close system calls ==
   Session test-kernel-session created.
   Traces will be written in /tmp/lttng-kernel-trace-21869-session
   PASSED (lttng create)
   Error: Event open: Kernel tracer not available (channel channel0, session 
test-kernel-session)
   Error: Event openat: Kernel tracer not available (channel channel0, session 
test-kernel-session)
   Error: Event close: Kernel tracer not available (channel channel0, session 
test-kernel-session)
   FAILED (lttng enable-event)
   Session test-kernel-session destroyed

   == lttng smoke test trace context switches ==
   Session test-kernel-session created.
   Traces will be written in /tmp/lttng-kernel-trace-21869-session
   PASSED (lttng create)
   Error: Event sched_switch: Kernel tracer not available (channel channel0, 
session test-kernel-session)
   FAILED (lttng enable-event)

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