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google-compute-image: fix Yama LSM option conflict

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Having fixed the Google Compute Engine image build process's copying
of store paths in PR #24264, I ran `nixos-rebuild --upgrade switch`...
and the GCE image broke again, because it sets the NixOS configuration
option for the sysctl variable `kernel.yama.ptrace_scope` to
`mkDefault "1"`, i.e., with override priority 1000, and now the
`sysctl` module sets the same option to `mkDefault "0"` (this was
changed in commit 86721a5f78).

This patch raises the override priority of the Google Compute Engine
image configuration's definition of the Yama sysctl option to 500
(still lower than the priority of an unmodified option definition).

I have tested that this patch allows the Google Compute Engine image
to again build successfully for me.
This commit is contained in:
c74d 2017-03-24 01:27:49 +00:00 committed by Franz Pletz
parent 7eb867794e
commit a4ac5506f5
1 changed files with 1 additions and 1 deletions
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2
nixos/modules/virtualisation/google-compute-image.nix
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@ -261,7 +261,7 @@ in
"kernel.kptr_restrict" = mkDefault "1";
# set ptrace protections
"kernel.yama.ptrace_scope" = mkDefault "1";
"kernel.yama.ptrace_scope" = mkOverride 500 "1";
# set perf only available to root
"kernel.perf_event_paranoid" = mkDefault "2";