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Kernel: Fix undefined signed overflow in KernelRng's RTC fallback

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Jean-Baptiste Boric 2021-02-11 19:26:00 +01:00 • committed by Andreas Kling
parent eedb6480df
commit f8c352a022
1 changed files with 3 additions and 3 deletions
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6
Kernel/Random.cpp
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@ -77,11 +77,11 @@ KernelRng::KernelRng()
} else { } else {
// Fallback to RTC // Fallback to RTC
klog() << "KernelRng: Using RTC as entropy source (bad!)"; klog() << "KernelRng: Using RTC as entropy source (bad!)";
time_t current_time = RTC::now(); auto current_time = static_cast<u64>(RTC::now());
for (size_t i = 0; i < resource().pool_count * resource().reseed_threshold; ++i) { for (size_t i = 0; i < resource().pool_count * resource().reseed_threshold; ++i) {
this->resource().add_random_event(current_time, i % 32); this->resource().add_random_event(current_time, i % 32);
current_time *= 0x574a; current_time *= 0x574au;
current_time += 0x40b2; current_time += 0x40b2u;
} }
} }
} }