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[Launchpad Bug Tracker <1896781@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package lttng-modules - 2.11.2-1ubuntu0.2

---------------
lttng-modules (2.11.2-1ubuntu0.2) focal; urgency=medium

  * Fix writeback_queue_io() modification (LP: #1896781):
    - d/p/compat-5.9/0001-fix-writeback-queue-io.patch

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Wed, 23 Sep 2020 18:21:58
+0200

** Changed in: lttng-modules (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1896781

Title:
  lttng-modules 2.11.2-1ubuntu0.1 ADT test failure with linux
  5.4.0-49.53

Status in ubuntu-kernel-tests:
  Confirmed
Status in lttng-modules package in Ubuntu:
  Fix Released
Status in lttng-modules source package in Xenial:
  Fix Committed
Status in lttng-modules source package in Bionic:
  Fix Committed
Status in lttng-modules source package in Focal:
  Fix Released

Bug description:
  [SRU Justification]

  == Impact ==
  An upstream change in v5.9 which was backported into all supported releases modified a function which lltng-modules uses. This causes the DKMS compilation to fail for all kernels which carry that fix.

  == Fix ==
  We add kernel version specific fixup code which allows to compile for previous and newer kernels.

  == Testcase ==
  DKMS build of lttng-modules will fail without the update and work with all kernels in updates and proposed.

  == Regression Potention ==
  The DKMS build might still fail (but beside of conditionally handling an additional argument to a function the code is unchanged).

  ---

  Testing failed on:
      amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/amd64/l/lttng-modules/20200923_104051_ff54e@/log.gz
      arm64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/arm64/l/lttng-modules/20200921_213835_75690@/log.gz
      ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/ppc64el/l/lttng-modules/20200922_003029_2408c@/log.gz
      s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/s390x/l/lttng-modules/20200921_174009_64208@/log.gz

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