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Merge pull request #1343 from lioncash/mutex

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kernel/svc: Handle invalid address cases within svcArbitrateLock() and svcArbitrateUnlock()
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bunnei 2018-09-18 14:25:00 -04:00 committed by GitHub
commit 733c47623b
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2 changed files with 10 additions and 2 deletions
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4
src/core/hle/kernel/mutex.cpp
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@ -62,7 +62,7 @@ ResultCode Mutex::TryAcquire(HandleTable& handle_table, VAddr address, Handle ho
Handle requesting_thread_handle) { Handle requesting_thread_handle) {
// The mutex address must be 4-byte aligned // The mutex address must be 4-byte aligned
if ((address % sizeof(u32)) != 0) { if ((address % sizeof(u32)) != 0) {
return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidAddress); return ERR_INVALID_ADDRESS;
} }
SharedPtr<Thread> holding_thread = handle_table.Get<Thread>(holding_thread_handle); SharedPtr<Thread> holding_thread = handle_table.Get<Thread>(holding_thread_handle);
@ -100,7 +100,7 @@ ResultCode Mutex::TryAcquire(HandleTable& handle_table, VAddr address, Handle ho
ResultCode Mutex::Release(VAddr address) { ResultCode Mutex::Release(VAddr address) {
// The mutex address must be 4-byte aligned // The mutex address must be 4-byte aligned
if ((address % sizeof(u32)) != 0) { if ((address % sizeof(u32)) != 0) {
return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidAddress); return ERR_INVALID_ADDRESS;
} }
auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(GetCurrentThread(), address); auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(GetCurrentThread(), address);

8
src/core/hle/kernel/svc.cpp
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@ -280,6 +280,10 @@ static ResultCode ArbitrateLock(Handle holding_thread_handle, VAddr mutex_addr,
"requesting_current_thread_handle=0x{:08X}", "requesting_current_thread_handle=0x{:08X}",
holding_thread_handle, mutex_addr, requesting_thread_handle); holding_thread_handle, mutex_addr, requesting_thread_handle);
if (Memory::IsKernelVirtualAddress(mutex_addr)) {
return ERR_INVALID_ADDRESS_STATE;
}
auto& handle_table = Core::System::GetInstance().Kernel().HandleTable(); auto& handle_table = Core::System::GetInstance().Kernel().HandleTable();
return Mutex::TryAcquire(handle_table, mutex_addr, holding_thread_handle, return Mutex::TryAcquire(handle_table, mutex_addr, holding_thread_handle,
requesting_thread_handle); requesting_thread_handle);
@ -289,6 +293,10 @@ static ResultCode ArbitrateLock(Handle holding_thread_handle, VAddr mutex_addr,
static ResultCode ArbitrateUnlock(VAddr mutex_addr) { static ResultCode ArbitrateUnlock(VAddr mutex_addr) {
LOG_TRACE(Kernel_SVC, "called mutex_addr=0x{:X}", mutex_addr); LOG_TRACE(Kernel_SVC, "called mutex_addr=0x{:X}", mutex_addr);
if (Memory::IsKernelVirtualAddress(mutex_addr)) {
return ERR_INVALID_ADDRESS_STATE;
}
return Mutex::Release(mutex_addr); return Mutex::Release(mutex_addr);
} }