kernel/svc: Handle error cases for svcArbitrateLock() and svcArbitrateUnlock()
The kernel does the equivalent of the following check before proceeding: if (address + 0x8000000000 < 0x7FFFE00000) { return ERR_INVALID_MEMORY_STATE; } which is essentially what our IsKernelVirtualAddress() function does. So we should also be checking for this. The kernel also checks if the given input addresses are 4-byte aligned, however our Mutex::TryAcquire() and Mutex::Release() functions already handle this, so we don't need to add code for this case.
This commit is contained in:
parent
a94b623dfb
commit
b6867602ca
1 changed files with 8 additions and 0 deletions
|
@ -280,6 +280,10 @@ static ResultCode ArbitrateLock(Handle holding_thread_handle, VAddr mutex_addr,
|
|||
"requesting_current_thread_handle=0x{:08X}",
|
||||
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();
|
||||
return Mutex::TryAcquire(handle_table, mutex_addr, holding_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) {
|
||||
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);
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue