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Kernel: Fix assertion when releasing contiguous memory region

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There is no guarantee that the memory manager lock is held when
physical pages are released, so just acquire the memory manager
lock.
This commit is contained in:
Tom 2020-08-20 16:41:05 -06:00 • committed by Andreas Kling
parent 4dfe797263
commit cf8ce839da
1 changed files with 1 additions and 1 deletions
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2
Kernel/VM/MemoryManager.cpp
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@ -453,7 +453,7 @@ RefPtr<PhysicalPage> MemoryManager::allocate_user_physical_page(ShouldZeroFill s
void MemoryManager::deallocate_supervisor_physical_page(PhysicalPage&& page)
{
ASSERT(s_mm_lock.is_locked());
ScopedSpinLock lock(s_mm_lock);
for (auto& region : m_super_physical_regions) {
if (!region.contains(page)) {
klog() << "MM: deallocate_supervisor_physical_page: " << page.paddr() << " not in " << region.lower() << " -> " << region.upper();