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Kernel: Propagate overflow errors from Memory::page_round_up

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Fixes #11402.
This commit is contained in:
Guilherme Goncalves 2021-12-24 11:22:11 -03:00 • committed by Andreas Kling
parent 11599a3342
commit 33b78915d3
31 changed files with 112 additions and 100 deletions
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6
Kernel/Memory/AddressSpace.cpp
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@ -131,7 +131,7 @@ ErrorOr<void> AddressSpace::unmap_mmap_range(VirtualAddress addr, size_t size)
ErrorOr<VirtualRange> AddressSpace::try_allocate_range(VirtualAddress vaddr, size_t size, size_t alignment)
{
vaddr.mask(PAGE_MASK);
size = page_round_up(size);
size = TRY(page_round_up(size));
if (vaddr.is_null())
return page_directory().range_allocator().try_allocate_anywhere(size, alignment);
return page_directory().range_allocator().try_allocate_specific(vaddr, size);
@ -222,8 +222,8 @@ Region* AddressSpace::find_region_from_range(VirtualRange const& range)
if (!found_region)
return nullptr;
auto& region = *found_region;
size_t size = page_round_up(range.size());
if (region->size() != size)
auto rounded_range_size = page_round_up(range.size());
if (rounded_range_size.is_error() || region->size() != rounded_range_size.value())
return nullptr;
m_region_lookup_cache.range = range;
m_region_lookup_cache.region = *region;