Improve user namespace detection#689
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jkloetzke merged 4 commits intoBobBuildTool:masterfrom Dec 31, 2025
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On Ubuntu, the usage of mount namespaces is apparently restricted in unprivileged user namespaces. In particular, if /proc/sys/kernel/apparmor_restrict_unprivileged_userns_complain is enabled, the clone() or unshare() call succeeds but the following mount() call to make the mount namespace private is rejected.
Make sure the namespace-sandbox binary is up-to-date before any of the test runs. Some of the blackbox tests call it directly and they could accidentally call an outdated version.
Add the Ubuntu procfs knob and actually test for the current value to give a more precise hint of what is going on.
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #689 +/- ##
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- Coverage 89.38% 89.26% -0.12%
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Files 50 50
Lines 16404 16417 +13
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- Hits 14662 14655 -7
- Misses 1742 1762 +20 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Detect Ubuntu restrictions...