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UserspaceEmulator: Honor alignment requests in virt$mmap(MAP_RANDOMIZED)

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This commit is contained in:
Andreas Kling 2021-03-09 14:42:49 +01:00
parent 0bf457f715
commit 397f564144
Notes: sideshowbarker 2024-07-18 21:34:46 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/397f564144f
1 changed files with 1 additions and 2 deletions
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Userland/DevTools/UserspaceEmulator/RangeAllocator.cpp
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@ -81,8 +81,7 @@ Optional<Range> RangeAllocator::allocate_randomized(size_t size, size_t alignmen
// FIXME: I'm sure there's a smarter way to do this.
static constexpr size_t maximum_randomization_attempts = 1000;
for (size_t i = 0; i < maximum_randomization_attempts; ++i) {
VirtualAddress random_address { get_random<FlatPtr>() };
random_address.mask(PAGE_MASK);
VirtualAddress random_address { round_up_to_power_of_two(get_random<FlatPtr>(), alignment) };
if (!m_total_range.contains(random_address, size))
continue;