nixpkgs-suyu/nixos
aszlig ba816ee087
nixos/tests/virtualbox: Work around test failures
I've started digging into the actual cause of the problem a week ago but
didn't continue fixing this.

The reason why the tests are failing is because
torvalds/linux/commit/72f5e08dbba2d01aa90b592cf76c378ea233b00b has
remapped the location of the TSS into the CPU entry area and we did
update our default kernel to version 4.14 in NixOS/nixpkgs@88530e02b6.

Back to VirtualBox: The guru meditation happens in
selmRCGuestTssPostWriteCheck, which I think is only a followup error. I
believe the right location couldn't be determined by VirtualBox and thus
the write check function triggers that panic because it's reading from
the wrong location.

So the actual problem *only* surfaces whenever we use software
virtualization, which we do for our tests because we don't have nested
virtualization available.

Our tests are also for testing the functionality of VirtualBox itself
and not certain kernel versions or kernel features, so for the time
being and until this is fixed, let's actually use kernel version 4.9 for
the guests within the VM tests. Kernel 4.9 didn't have the mentioned
change of the TSS location and thus the tests succeed.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @dtzWill
2018-03-13 22:00:56 +01:00
..
doc/manual nixos doc: give context and definition re NIXOS_LUSTRATE 2018-03-07 01:23:20 +00:00
lib Merge pull request #35844 from adisbladis/jquery-mv 2018-03-06 15:34:34 +08:00
maintainers nixos/make-disk-image.nix: Support EFI images 2018-01-22 11:18:23 +02:00
modules Merge pull request #36850 from teto/virtualisation 2018-03-13 13:40:33 +00:00
tests nixos/tests/virtualbox: Work around test failures 2018-03-13 22:00:56 +01:00
COPYING
default.nix nixos: export packages of the current configuration (its pkgs argument) 2018-02-09 19:35:27 +00:00
README
release-combined.nix nixos/release: fix evaluation if missing x86 2018-03-07 16:06:30 +01:00
release-small.nix Add the boot test to release-small.nix 2018-02-27 20:09:07 +01:00
release.nix nixos release: more evaluation fixes 2018-03-07 17:29:02 +01:00

*** NixOS ***

NixOS is a Linux distribution based on the purely functional package
management system Nix.  More information can be found at
http://nixos.org/nixos and in the manual in doc/manual.