// Copyright 2014 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // This file contains the default options for various compiler-based dynamic // tools. #include "build/build_config.h" #if defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \ defined(MEMORY_SANITIZER) || defined(THREAD_SANITIZER) || \ defined(UNDEFINED_SANITIZER) // The callbacks we define here will be called from the sanitizer runtime, but // aren't referenced from the Chrome executable. We must ensure that those // callbacks are not sanitizer-instrumented, and that they aren't stripped by // the linker. #define SANITIZER_HOOK_ATTRIBUTE \ extern "C" \ __attribute__((no_sanitize("address", "memory", "thread", "undefined"))) \ __attribute__((visibility("default"))) \ __attribute__((used)) // Functions returning default options are declared weak in the tools' runtime // libraries. To make the linker pick the strong replacements for those // functions from this module, we explicitly force its inclusion by passing // -Wl,-u_sanitizer_options_link_helper // SANITIZER_HOOK_ATTRIBUTE instead of just `extern "C"` solely to make the // symbol externally visible, for ToolsSanityTest.LinksSanitizerOptions. SANITIZER_HOOK_ATTRIBUTE void _sanitizer_options_link_helper() {} #endif #if defined(ADDRESS_SANITIZER) // Default options for AddressSanitizer in various configurations: // strip_path_prefix=/../../ - prefixes up to and including this // substring will be stripped from source file paths in symbolized reports // fast_unwind_on_fatal=1 - use the fast (frame-pointer-based) stack unwinder // to print error reports. V8 doesn't generate debug info for the JIT code, // so the slow unwinder may not work properly. // detect_stack_use_after_return=1 - use fake stack to delay the reuse of // stack allocations and detect stack-use-after-return errors. // symbolize=1 - enable in-process symbolization. // external_symbolizer_path=... - provides the path to llvm-symbolizer // relative to the main executable #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) const char kAsanDefaultOptions[] = "strip_path_prefix=/../../ fast_unwind_on_fatal=1 " "detect_stack_use_after_return=1 symbolize=1 detect_leaks=0 " "external_symbolizer_path=%d/../../third_party/llvm-build/Release+Asserts/" "bin/llvm-symbolizer"; #elif BUILDFLAG(IS_APPLE) const char* kAsanDefaultOptions = "strip_path_prefix=/../../ fast_unwind_on_fatal=1 " "detect_stack_use_after_return=1 "; #elif BUILDFLAG(IS_WIN) const char* kAsanDefaultOptions = "strip_path_prefix=\\..\\..\\ fast_unwind_on_fatal=1 " "detect_stack_use_after_return=1 symbolize=1 " "external_symbolizer_path=%d/../../third_party/" "llvm-build/Release+Asserts/bin/llvm-symbolizer.exe"; #endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_APPLE) || \ BUILDFLAG(IS_WIN) // Allow NaCl to override the default asan options. extern const char* kAsanDefaultOptionsNaCl; __attribute__((weak)) const char* kAsanDefaultOptionsNaCl = nullptr; SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_options() { if (kAsanDefaultOptionsNaCl) return kAsanDefaultOptionsNaCl; return kAsanDefaultOptions; } extern char kASanDefaultSuppressions[]; SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_suppressions() { return kASanDefaultSuppressions; } #endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_APPLE) // || BUILDFLAG(IS_WIN) #endif // ADDRESS_SANITIZER #if defined(THREAD_SANITIZER) && (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)) // Default options for ThreadSanitizer in various configurations: // second_deadlock_stack=1 - more verbose deadlock reports. // report_signal_unsafe=0 - do not report async-signal-unsafe functions // called from signal handlers. // report_thread_leaks=0 - do not report unjoined threads at the end of // the program execution. // print_suppressions=1 - print the list of matched suppressions. // history_size=7 - make the history buffer proportional to 2^7 (the maximum // value) to keep more stack traces. // strip_path_prefix=/../../ - prefixes up to and including this // substring will be stripped from source file paths in symbolized reports. // external_symbolizer_path=... - provides the path to llvm-symbolizer // relative to the main executable const char kTsanDefaultOptions[] = "second_deadlock_stack=1 report_signal_unsafe=0 " "report_thread_leaks=0 print_suppressions=1 history_size=7 " "strip_path_prefix=/../../ external_symbolizer_path=%d/../../third_party/" "llvm-build/Release+Asserts/bin/llvm-symbolizer"; SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_options() { return kTsanDefaultOptions; } extern char kTSanDefaultSuppressions[]; SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_suppressions() { return kTSanDefaultSuppressions; } #endif // defined(THREAD_SANITIZER) && (BUILDFLAG(IS_LINUX) || // BUILDFLAG(IS_CHROMEOS)) #if defined(MEMORY_SANITIZER) // Default options for MemorySanitizer: // strip_path_prefix=/../../ - prefixes up to and including this // substring will be stripped from source file paths in symbolized reports. // external_symbolizer_path=... - provides the path to llvm-symbolizer // relative to the main executable const char kMsanDefaultOptions[] = "strip_path_prefix=/../../ " #if !BUILDFLAG(IS_APPLE) "external_symbolizer_path=%d/../../third_party/llvm-build/Release+Asserts/" "bin/llvm-symbolizer" #endif ; SANITIZER_HOOK_ATTRIBUTE const char *__msan_default_options() { return kMsanDefaultOptions; } #endif // MEMORY_SANITIZER #if defined(LEAK_SANITIZER) // Default options for LeakSanitizer: // strip_path_prefix=/../../ - prefixes up to and including this // substring will be stripped from source file paths in symbolized reports. // external_symbolizer_path=... - provides the path to llvm-symbolizer // relative to the main executable // use_poisoned=1 - Scan poisoned memory. This is useful for Oilpan (C++ // garbage collection) which wants to exclude its managed memory from being // reported as leaks (through root regions) and also temporarily poisons // memory regions before calling destructors of objects to avoid destructors // cross-referencing memory in other objects. Main thread termination in // Blink is not graceful and leak checks may be emitted at any time, which // means that the garbage collector may be in a state with poisoned memory, // leading to false-positive reports. const char kLsanDefaultOptions[] = "strip_path_prefix=/../../ use_poisoned=1 " #if !BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_FUCHSIA) "external_symbolizer_path=%d/../../third_party/llvm-build/Release+Asserts/" "bin/llvm-symbolizer " #endif #if defined(ARCH_CPU_64_BITS) // When pointer compression in V8 is enabled the external pointers in the // heap are guaranteed to be only 4 bytes aligned. So we need this option // in order to ensure that LSAN will find all the external pointers. // TODO(crbug.com/328552): see updates from 2019. "use_unaligned=1 " #endif // ARCH_CPU_64_BITS ; SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_options() { return kLsanDefaultOptions; } // TODO(https://fxbug.dev/102967): Remove when Fuchsia supports // module-name-based and function-name-based suppression. #if !BUILDFLAG(IS_FUCHSIA) extern char kLSanDefaultSuppressions[]; SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_suppressions() { return kLSanDefaultSuppressions; } #endif // !BUILDFLAG(IS_FUCHSIA) #endif // LEAK_SANITIZER #if defined(UNDEFINED_SANITIZER) // Default options for UndefinedBehaviorSanitizer: // print_stacktrace=1 - print the stacktrace when UBSan reports an error. const char kUbsanDefaultOptions[] = "print_stacktrace=1 strip_path_prefix=/../../ " #if !BUILDFLAG(IS_APPLE) "external_symbolizer_path=%d/../../third_party/llvm-build/Release+Asserts/" "bin/llvm-symbolizer" #endif ; SANITIZER_HOOK_ATTRIBUTE const char* __ubsan_default_options() { return kUbsanDefaultOptions; } #endif // UNDEFINED_SANITIZER