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UserspaceEmulator: Don't audit accesses in calloc() and libsystem.so

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These generate a lot of false positives and nothing of value.
This commit is contained in:
Andreas Kling 2021-03-09 13:24:03 +01:00
parent a457b90733
commit 38fc522f5d
3 changed files with 20 additions and 1 deletions
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12
Userland/DevTools/UserspaceEmulator/Emulator.h
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@ -64,6 +64,7 @@ public:
bool is_in_malloc_or_free() const;
bool is_in_loader_code() const;
bool is_in_libsystem() const;
void did_receive_signal(int signum) { m_pending_signals |= (1 << signum); }
@ -189,11 +190,16 @@ private:
FlatPtr m_malloc_symbol_end { 0 };
FlatPtr m_realloc_symbol_start { 0 };
FlatPtr m_realloc_symbol_end { 0 };
FlatPtr m_calloc_symbol_start { 0 };
FlatPtr m_calloc_symbol_end { 0 };
FlatPtr m_free_symbol_start { 0 };
FlatPtr m_free_symbol_end { 0 };
FlatPtr m_malloc_size_symbol_start { 0 };
FlatPtr m_malloc_size_symbol_end { 0 };
FlatPtr m_libsystem_start { 0 };
FlatPtr m_libsystem_end { 0 };
sigset_t m_pending_signals { 0 };
sigset_t m_signal_mask { 0 };
@ -218,11 +224,17 @@ private:
RangeAllocator m_range_allocator;
};
ALWAYS_INLINE bool Emulator::is_in_libsystem() const
{
return m_cpu.base_eip() >= m_libsystem_start && m_cpu.base_eip() < m_libsystem_end;
}
ALWAYS_INLINE bool Emulator::is_in_malloc_or_free() const
{
return (m_cpu.base_eip() >= m_malloc_symbol_start && m_cpu.base_eip() < m_malloc_symbol_end)
|| (m_cpu.base_eip() >= m_free_symbol_start && m_cpu.base_eip() < m_free_symbol_end)
|| (m_cpu.base_eip() >= m_realloc_symbol_start && m_cpu.base_eip() < m_realloc_symbol_end)
|| (m_cpu.base_eip() >= m_calloc_symbol_start && m_cpu.base_eip() < m_calloc_symbol_end)
|| (m_cpu.base_eip() >= m_malloc_size_symbol_start && m_cpu.base_eip() < m_malloc_size_symbol_end);
}