dpdk 16.11.2-3 ADT test failure with linux 4.12.0-4.5

[Seth Forshee]

Testing failed on:
    amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-unstable/artful/amd64/d/dpdk/20170627_064501_52f8e@/log.gz
    i386: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-unstable/artful/i386/d/dpdk/20170627_064839_52f8e@/log.gz
    ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-unstable/artful/ppc64el/d/dpdk/20170627_071552_52f8e@/log.gz

[Christian Ehrhardt  (paelzer)]

Thanks for the report, yeah 4.12 we didn't care about yet.

Background in Kernel remove pci_enable_msix:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aff171641d18
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=4244de1c64de

Fix in dpdk needs to be backported:
http://dpdk.org/browse/dpdk/commit/?id=99bb58f3adc73046b538874a0944578146ee1189

[Christian Ehrhardt  (paelzer)]

HWE into Xenial -> no dkms packages
4.12 for Artful well might happen or at least people might install it on their own.
But TL;DR no SRU needed - just artful for now.

[Christian Ehrhardt  (paelzer)]

Test builds ok, found no other regression.

[Christian Ehrhardt  (paelzer)]

Without the fix I could confirm the issue as expected (via daily mainlin 4.12-rc7):
/var/lib/dkms/dpdk-igb-uio/16.11.2/build/igb_uio.c:383:7: error: implicit declaration of function ‘pci_enable_msix’ [-Werror=implicit-function-declaration]
   if (pci_enable_msix(dev, &msix_entry, 1) == 0) {
       ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

[Christian Ehrhardt  (paelzer)]

With the fix former 4.10 and 4.12 build dkms module just fine:

Setting up dpdk-igb-uio-dkms (16.11.2-4~git1) ...
Loading new dpdk-igb-uio-16.11.2 DKMS files...
Building for 4.10.0-22-generic 4.12.0-041200rc7-generic
Building initial module for 4.10.0-22-generic
Done.

igb_uio:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.10.0-22-generic/updates/dkms/

depmod...

DKMS: install completed.
Building initial module for 4.12.0-041200rc7-generic
Done.

igb_uio:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/4.12.0-041200rc7-generic/updates/dkms/

depmod...

DKMS: install completed.

[Christian Ehrhardt  (paelzer)]

Submitted fixes for peer review to deb_dpdk and from there they can be picked up into Debian which will sync to artful.

[Christian Ehrhardt  (paelzer)]

Since this is "only" for 4.12 I will wait until this is picked up the normal way, if for whatever reason we need that faster (=add ubuntu delta for now) please let me know.

[Seth Forshee (sforshee)]

Thanks! It should be at least a couple of weeks before we're trying to get a 4.12 kernel into the archive, so there's still some time.

[Launchpad Janitor (janitor)]

This bug was fixed in the package dpdk - 16.11.2-4

---------------
dpdk (16.11.2-4) unstable; urgency=medium

  [ Christian Ehrhardt ]
  * d/p/igb_uio-switch-to-new-irq-function-for-MSI-X.patch: fix dkms issue
    in kernel 4.12 (LP: #1700768)

  [ Luca Boccassi ]
  * Add patches to make the documentation and linker script builds fully
    reproducible.
  * Add patches to make the libraries and PMDs builds fully reproducible,
    by making the listing order of headers, source files and objects in
    the makefiles stable (via sorting).

 -- Luca Boccassi <email address hidden> Fri, 30 Jun 2017 12:09:59 +0100