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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
.github CODEOWNERS: Make @orivej a {cc,bintools}-wrapper codeowner 2018-01-19 16:18:27 -05:00
doc A note about scheme-* in texlive.combine 2018-03-07 22:25:01 +01:00
lib lib.isStorePath: Fix derivation detection 2018-03-09 17:21:31 -05:00
maintainers maintainers/scripts/update.nix: use saner nubbing 2018-03-13 18:04:47 +01:00
nixos nixos/tests/virtualbox: Work around test failures 2018-03-13 22:00:56 +01:00
pkgs hackage: update database snapshot to latest version 2018-03-13 21:42:54 +01:00
.editorconfig Do not trim trailing whitespace in patch files 2017-01-12 23:44:26 +01:00
.gitignore kde5: consolidate packages into desktops/kde-5 2016-03-01 10:36:00 -06:00
.version 18.03 -> 18.09 2018-03-05 19:47:39 +01:00
COPYING 2018 will be the year of NixOS 2018-01-04 17:59:52 -05:00
default.nix default.nix: Provide correct instructions how to upgrade Nix 2017-03-18 21:04:07 +02:00
README.md README: Use HTTPS for all hyperlinks 2017-11-22 19:51:40 +01:00

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Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:

% git remote add channels git://github.com/NixOS/nixpkgs-channels.git

For stability and maximum binary package support, it is recommended to maintain custom changes on top of one of the channels, e.g. nixos-17.09 for the latest release and nixos-unstable for the latest successful build of master:

% git remote update channels
% git rebase channels/nixos-17.09

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