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Kernel: Remove unnecessary wraparound check in Process::validate_read()

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This will be checked moments later by MM.validate_user_read().
This commit is contained in:
Andreas Kling 2020-01-03 01:27:47 +01:00
parent 587b80bf0f
commit 8345f51a24
1 changed files with 0 additions and 3 deletions
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3
Kernel/Process.cpp
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@ -2024,9 +2024,6 @@ bool Process::validate_read(const void* address, ssize_t size) const
{ {
ASSERT(size >= 0); ASSERT(size >= 0);
VirtualAddress first_address((u32)address); VirtualAddress first_address((u32)address);
VirtualAddress last_address = first_address.offset(size - 1);
if (last_address < first_address)
return false;
if (is_ring0()) { if (is_ring0()) {
auto kmc_result = check_kernel_memory_access(first_address, false); auto kmc_result = check_kernel_memory_access(first_address, false);
if (kmc_result == KernelMemoryCheckResult::AccessGranted) if (kmc_result == KernelMemoryCheckResult::AccessGranted)