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After verifying that vDSO getrandom does work, which ensures that the RNG is initialized, test to see if it also works inside of a time namespace. This is important to test, because the vvar pages get swizzled around there. If the arch code isn't careful, the RNG will appear uninitialized inside of a time namespace. Because broken code makes the RNG appear uninitialized, test that everything works by issuing a call to vgetrandom from a fork in a time namespace, and use ptrace to ensure that the actual syscall getrandom doesn't get called. If it doesn't get called, then the test succeeds. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
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| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
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| include | ||
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| laptop | ||
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| lib | ||
| memory-model | ||
| mm | ||
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| perf | ||
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| tracing | ||
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| wmi | ||
| workqueue | ||
| writeback | ||
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