dkms module fails to build with: error: implicit declaration of function ‘get_io_context’

[James Page]

Probably a compatibility issue between iscsitarget and the 3.5 kernel:

DKMS make.log for iscsitarget-1.4.20.2 for kernel 3.5.0-13-generic (x86_64)
Tue Sep 4 10:06:39 BST 2012
make: Entering directory `/usr/src/linux-headers-3.5.0-13-generic'
  LD /var/lib/dkms/iscsitarget/1.4.20.2/build/built-in.o
  LD /var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/built-in.o
  CC [M] /var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/tio.o
  CC [M] /var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/iscsi.o
  CC [M] /var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/nthread.o
/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/nthread.c: In function ‘do_recv’:
/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/nthread.c:145:1: warning: the frame size of 1104 bytes is larger than 1024 bytes [-Wframe-larger-than=]
  CC [M] /var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/wthread.o
/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/wthread.c: In function ‘worker_thread’:
/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/wthread.c:76:3: error: implicit declaration of function ‘get_io_context’ [-Werror=implicit-function-declaration]
/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/wthread.c:76:21: warning: assignment makes pointer from integer without a cast [enabled by default]
cc1: some warnings being treated as errors
make[2]: *** [/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel/wthread.o] Error 1
make[1]: *** [/var/lib/dkms/iscsitarget/1.4.20.2/build/kernel] Error 2
make: *** [_module_/var/lib/dkms/iscsitarget/1.4.20.2/build] Error 2
make: Leaving directory `/usr/src/linux-headers-3.5.0-13-generic'

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: iscsitarget-dkms 1.4.20.2-5ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu4
Architecture: amd64
Date: Tue Sep 4 10:07:15 2012
PackageArchitecture: all
SourcePackage: iscsitarget
UpgradeStatus: Upgraded to quantal on 2012-06-11 (84 days ago)

[Launchpad Janitor (janitor)]

This bug was fixed in the package iscsitarget - 1.4.20.2-10ubuntu1

---------------
iscsitarget (1.4.20.2-10ubuntu1) quantal; urgency=low

  * Merge from Debian testing. Remaining changes:
    - d/iscsitarget.init: If module unloading fails after stopping ietd,
      report it but still exit zero since this doesn't justify causing
      package operations to fail.
    - d/docs: Install README.initiators and README.mcs.
    - d/p/fix-send-data-rsp.patch: Pick change @462 from upstream svn to
      prevent a assertion failure in iscsi.c@492.
    - d/p/linux-3.2-includes.patch: Add additional includes of linux/export.h
      and linux/module.h, resolving dkms build failures with > linux 3.2.
    - d/p/fix-dkms.patch: Add missing patch entries to the dkms.conf file.
  * Fix DKMS compatibility with Linux 3.5 kernel (LP: #1045706):
    - d/p/iscsitarget-svn{444,471}.patch: Cherry picked patches from
      upstream VCS trunk, resolving dkms build failures with > linux 3.5.
    - d/p/fix-linux3.5.patch: Rework usage of ioc_task_link, resolving
      dkms build failures with > linux 3.5.
  * Ensure ietadm can detect inactive sessions (LP: #967984):
    - d/p/iscsitarget-svn478.patch: Cherry picked patch from upstream
      VCS trunk which ensures that events are propagated correctly to
      ietd.

iscsitarget (1.4.20.2-10) unstable; urgency=low

  * [2bebbc2] don't prompt on modified conffiles.
    Thanks to Andreas Beckmann (Closes: #661397)
  * Upload to unstable

iscsitarget (1.4.20.2-9) experimental; urgency=low

  * [7ad9219] Clean up old sysctl knob.
    Thanks to Martin Braure de Calignon (Closes: #645582)
  * [0802fff] Use corrent message type.
    Thanks to Vincent Pelletier (Closes: #647923)
  * [dcab13f] Drop unmaintained iscsitarget-source package
  * [099cc1a] add quilt header to patch
  * [93dc585] Fix LSB Headers

iscsitarget (1.4.20.2-8) experimental; urgency=low

  * [735c872] Add patch to fix build on 3.2 kernels (Closes: #659560)

iscsitarget (1.4.20.2-7) unstable; urgency=low

  * [6ea2c52] Patch clean-up
  * [627d8e4] Enable hardened build flags.
    Thanks to Moritz Muehlenhoff (Closes: #656867)

iscsitarget (1.4.20.2-6) unstable; urgency=low

  * SVN 1.4.20@453 - Co-ordinated with upstream on the stability of the tree
  * [494142b] Drop double installation of upstream changelog.
    Thanks to Christian Pernegger (Closes: #633005)
  * [71de4f8] Add package linux-headers to Recommends.
    Thanks to George Shuklin (Closes: 636157, 628428)
  * [8344c44] Add support to provide daemon options.
    Thanks to Alfredo Sola, Robbert Rijkse (Closes: 609582, 545536)
  * [8208ade] Drop debian/30-iscsitarget.conf. (Closes: 636497)
    We should not play with kernel sysct knobs right from the package.
    Setting those values will depend on a per machine basis
  * [0e96f0e] Update Standards Version to 3.9.2. No changes required
 -- James Page <email address hidden> Tue, 04 Sep 2012 13:43:21 +0100