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UserspaceEmulator: Don't audit accesses in calloc() and libsystem.so
These generate a lot of false positives and nothing of value.
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a457b90733
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3 changed files with 20 additions and 1 deletions
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@ -1057,6 +1057,10 @@ u32 Emulator::virt$mmap(u32 params_addr)
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bool rc = find_malloc_symbols(*region);
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VERIFY(rc);
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}
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if (region->name() == "libsystem.so: .text") {
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m_libsystem_start = final_address;
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m_libsystem_end = final_address + final_size;
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}
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mmu().add_region(move(region));
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}
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@ -1818,6 +1822,7 @@ bool Emulator::find_malloc_symbols(const MmapRegion& libc_text)
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auto malloc_symbol = image.find_demangled_function("malloc");
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auto free_symbol = image.find_demangled_function("free");
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auto realloc_symbol = image.find_demangled_function("realloc");
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auto calloc_symbol = image.find_demangled_function("calloc");
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auto malloc_size_symbol = image.find_demangled_function("malloc_size");
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if (!malloc_symbol.has_value() || !free_symbol.has_value() || !realloc_symbol.has_value() || !malloc_size_symbol.has_value())
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return false;
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@ -1828,6 +1833,8 @@ bool Emulator::find_malloc_symbols(const MmapRegion& libc_text)
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m_free_symbol_end = m_free_symbol_start + free_symbol.value().size();
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m_realloc_symbol_start = realloc_symbol.value().value() + libc_text.base();
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m_realloc_symbol_end = m_realloc_symbol_start + realloc_symbol.value().size();
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m_calloc_symbol_start = calloc_symbol.value().value() + libc_text.base();
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m_calloc_symbol_end = m_calloc_symbol_start + calloc_symbol.value().size();
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m_malloc_size_symbol_start = malloc_size_symbol.value().value() + libc_text.base();
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m_malloc_size_symbol_end = m_malloc_size_symbol_start + malloc_size_symbol.value().size();
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return true;
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