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Fix virtual memory allocation being out of range (#2464)

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gdkchan 2021-07-11 16:24:31 -03:00 committed by GitHub
parent 0d841c8d51
commit b5190f1681
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1 changed files with 7 additions and 4 deletions
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11
Ryujinx.HLE/HOS/Kernel/Memory/KPageTableBase.cs
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@ -2411,9 +2411,11 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
{ {
if (info.State == MemoryState.Unmapped) if (info.State == MemoryState.Unmapped)
{ {
ulong currBaseAddr = info.Address + reservedSize; ulong currBaseAddr = info.Address <= regionStart ? regionStart : info.Address;
ulong currEndAddr = info.Address + info.Size - 1; ulong currEndAddr = info.Address + info.Size - 1;
currBaseAddr += reservedSize;
ulong address = BitUtils.AlignDown(currBaseAddr, alignment) + reservedStart; ulong address = BitUtils.AlignDown(currBaseAddr, alignment) + reservedStart;
if (currBaseAddr > address) if (currBaseAddr > address)
@ -2423,9 +2425,10 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
ulong allocationEndAddr = address + totalNeededSize - 1; ulong allocationEndAddr = address + totalNeededSize - 1;
if (allocationEndAddr <= regionEndAddr && if (info.Address <= address &&
allocationEndAddr <= currEndAddr && address < allocationEndAddr &&
address < allocationEndAddr) allocationEndAddr <= regionEndAddr &&
allocationEndAddr <= currEndAddr)
{ {
return address; return address;
} }