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svc: Check for word alignment of addresses within svcArbitrateLock/svcArbitrateUnlock 

The kernel itself checks whether or not the provided addresses are word
aligned before continuing, so we should be doing the same.
This commit is contained in:
Lioncash 2018-10-18 13:01:26 -04:00
parent 541e9624eb
commit 4b5ae8dbaa
1 changed files with 8 additions and 0 deletions
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8
src/core/hle/kernel/svc.cpp
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@ -350,6 +350,10 @@ static ResultCode ArbitrateLock(Handle holding_thread_handle, VAddr mutex_addr,
return ERR_INVALID_ADDRESS_STATE; return ERR_INVALID_ADDRESS_STATE;
} }
if (!Common::IsWordAligned(mutex_addr)) {
return ERR_INVALID_ADDRESS;
}
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);
@ -363,6 +367,10 @@ static ResultCode ArbitrateUnlock(VAddr mutex_addr) {
return ERR_INVALID_ADDRESS_STATE; return ERR_INVALID_ADDRESS_STATE;
} }
if (!Common::IsWordAligned(mutex_addr)) {
return ERR_INVALID_ADDRESS;
}
return Mutex::Release(mutex_addr); return Mutex::Release(mutex_addr);
} }