k_system_control: Fix data race
`return distribution(gen)` is a data race between a read and a write in two threads, reported by TSan. Remove static random number generators so they aren't using the same generator.
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@ -148,9 +148,9 @@ u64 GenerateUniformRange(u64 min, u64 max, F f) {
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} // Anonymous namespace
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u64 KSystemControl::GenerateRandomU64() {
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static std::random_device device;
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static std::mt19937 gen(device());
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static std::uniform_int_distribution<u64> distribution(1, std::numeric_limits<u64>::max());
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std::random_device device;
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std::mt19937 gen(device());
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std::uniform_int_distribution<u64> distribution(1, std::numeric_limits<u64>::max());
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return distribution(gen);
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}
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