[Bug 1732746] Re: [Trusty] iscsitarget-dkms 1.4.20.3+svn499-0ubuntu2.3 fails to build on linux-lts-xenial kernel

[Mathew Hodson]

** Changed in: iscsitarget (Ubuntu)
   Importance: Undecided => Medium

** Changed in: iscsitarget (Ubuntu Xenial)
   Importance: Undecided => Medium

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Title:
  [Trusty] iscsitarget-dkms 1.4.20.3+svn499-0ubuntu2.3 fails to build on
  linux-lts-xenial kernel

Status in iscsitarget package in Ubuntu:
  Fix Released
Status in iscsitarget source package in Trusty:
  In Progress
Status in iscsitarget source package in Xenial:
  Fix Released

Bug description:
  [Impact]
  iscsitarget-dkms will fail to build for 4.4.0 kernels on trusty, when their ABI start with 1, like in -100 or -101.

  [Test Case]
  Install different kernels, including 3.13, and 4.4, and 4.4.0-78, 4.4.0-81 and 4.4.0-101. That means different kernel base versions, different ABIs, including the offending one (that starts with 1), and the one that had not have the sock_recvmsg signature changed. All build successfully.

  [Regression Potential]
  Builds could fail with a future kernel or an old kernel we haven't tested with. A similar solution has already been applied to xenial. Some other way of calling dkms could make the build fail. Different ways have been tested in this case.


  iscsitarget ADT tests are failing on Trusty with linux-meta-lts-xenial
  4.4.0-101.124~14.04.1 due to iscsitarget-dkms
  1.4.20.3+svn499-0ubuntu2.3 compilation failure.

  amd64:
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-
  trusty/trusty/amd64/i/iscsitarget/20171115_174514_4fc3d@/log.gz

  i386:
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-
  trusty/trusty/i386/i/iscsitarget/20171115_174142_4fc3d@/log.gz

  ppc64el:
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-
  trusty/trusty/ppc64el/i/iscsitarget/20171115_174421_4fc3d@/log.gz

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