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kern: fix resource leak bugs

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Michael Scire 2020-07-23 19:26:46 -07:00 committed by SciresM
parent 11d5353827
commit 46935fea80
4 changed files with 7 additions and 2 deletions
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1
libraries/libmesosphere/include/mesosphere/kern_k_memory_manager.hpp
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@ -77,6 +77,7 @@ namespace ams::kern {
void InitializeOptimizedMemory() { std::memset(GetVoidPointer(this->metadata_region), 0, CalculateOptimizedProcessOverheadSize(this->heap.GetSize())); }
void TrackAllocationForOptimizedProcess(KVirtualAddress block, size_t num_pages);
constexpr Pool GetPool() const { return this->pool; }
constexpr size_t GetSize() const { return this->heap.GetSize(); }
constexpr KVirtualAddress GetEndAddress() const { return this->heap.GetEndAddress(); }

3
libraries/libmesosphere/source/kern_k_device_address_space.cpp
View file

@ -75,6 +75,9 @@ namespace ams::kern {
KPageGroup pg(page_table->GetBlockInfoManager());
R_TRY(page_table->LockForDeviceAddressSpace(std::addressof(pg), process_address, size, ConvertToKMemoryPermission(device_perm), is_aligned));
/* Close the pages we opened when we're done with them. */
ON_SCOPE_EXIT { pg.Close(); };
/* Ensure that if we fail, we don't keep unmapped pages locked. */
ON_SCOPE_EXIT {
if (*out_mapped_size != size) {

2
libraries/libmesosphere/source/kern_k_process.cpp
View file

@ -796,7 +796,7 @@ namespace ams::kern {
R_UNLESS(stack_size + this->code_size >= this->code_size, svc::ResultOutOfMemory());
/* Place a tentative reservation of memory for our new stack. */
KScopedResourceReservation mem_reservation(this, ams::svc::LimitableResource_PhysicalMemoryMax);
KScopedResourceReservation mem_reservation(this, ams::svc::LimitableResource_PhysicalMemoryMax, stack_size);
R_UNLESS(mem_reservation.Succeeded(), svc::ResultLimitReached());
/* Allocate and map our stack. */

3
libraries/libmesosphere/source/kern_k_thread.cpp
View file

@ -143,7 +143,7 @@ namespace ams::kern {
this->num_kernel_waiters = 0;
this->entrypoint = reinterpret_cast<uintptr_t>(func);
/* We don't need a release (probably), and we've spent no time on the cpu. */
/* We haven't released our resource limit hint, and we've spent no time on the cpu. */
this->resource_limit_release_hint = 0;
this->cpu_time = 0;
@ -825,6 +825,7 @@ namespace ams::kern {
/* Release the thread resource hint from parent. */
if (this->parent != nullptr) {
this->parent->ReleaseResource(ams::svc::LimitableResource_ThreadCountMax, 0, 1);
this->resource_limit_release_hint = true;
}
/* Perform termination. */