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Return EINVAL if mmap is called with length 0 (#3496)

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This commit is contained in:
Stephen Miller
2025-08-31 18:14:51 -05:00
committed by GitHub
parent be8c35eef1
commit bcea7a02c3
1 changed files with 6 additions and 0 deletions
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6
src/core/libraries/kernel/memory.cpp
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@@ -575,6 +575,12 @@ void* PS4_SYSV_ABI posix_mmap(void* addr, u64 len, s32 prot, s32 flags, s32 fd,
"called addr = {}, len = {:#x}, prot = {:#x}, flags = {:#x}, fd = {}, phys_addr = {:#x}", "called addr = {}, len = {:#x}, prot = {:#x}, flags = {:#x}, fd = {}, phys_addr = {:#x}",
fmt::ptr(addr), len, prot, flags, fd, phys_addr); fmt::ptr(addr), len, prot, flags, fd, phys_addr);
if (len == 0) {
// If length is 0, mmap returns EINVAL.
ErrSceToPosix(ORBIS_KERNEL_ERROR_EINVAL);
return reinterpret_cast<void*>(-1);
}
void* addr_out; void* addr_out;
auto* memory = Core::Memory::Instance(); auto* memory = Core::Memory::Instance();
const auto mem_prot = static_cast<Core::MemoryProt>(prot); const auto mem_prot = static_cast<Core::MemoryProt>(prot);