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virtual_memory: Ensure mapped addresses stay inside the user area

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* Fixes LLE Libc crashing on linux
This commit is contained in:
GPUCode 2024-04-13 22:31:31 +03:00
parent 40e2d8b9cf
commit 1332c8497b
1 changed files with 2 additions and 1 deletions
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3
src/core/virtual_memory.cpp
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@ -170,7 +170,8 @@ u64 memory_alloc_aligned(u64 address, u64 size, MemoryMode mode, u64 alignment)
}
return ptr;
#else
void* hint_address = reinterpret_cast<void*>(AlignUp(address, alignment));
void* hint_address = address == 0 ? reinterpret_cast<void*>(USER_MIN)
: reinterpret_cast<void*>(AlignUp(address, alignment));
void* ptr = mmap(hint_address, size, convertMemoryMode(mode), MAP_ANON | MAP_PRIVATE, -1, 0);
ASSERT(ptr != MAP_FAILED);
return reinterpret_cast<u64>(ptr);