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165 lines
6.9 KiB
C++
165 lines
6.9 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// This file contains the default options for various compiler-based dynamic
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// tools.
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#include "build/build_config.h"
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#if defined(ADDRESS_SANITIZER) && defined(OS_MACOSX)
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#include <crt_externs.h> // for _NSGetArgc, _NSGetArgv
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#include <string.h>
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#endif // ADDRESS_SANITIZER && OS_MACOSX
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#if defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \
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defined(MEMORY_SANITIZER) || defined(THREAD_SANITIZER)
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// Functions returning default options are declared weak in the tools' runtime
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// libraries. To make the linker pick the strong replacements for those
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// functions from this module, we explicitly force its inclusion by passing
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// -Wl,-u_sanitizer_options_link_helper
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extern "C"
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void _sanitizer_options_link_helper() { }
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// The callbacks we define here will be called from the sanitizer runtime, but
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// aren't referenced from the Chrome executable. We must ensure that those
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// callbacks are not sanitizer-instrumented, and that they aren't stripped by
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// the linker.
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#define SANITIZER_HOOK_ATTRIBUTE \
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extern "C" \
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__attribute__((no_sanitize_address)) \
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__attribute__((no_sanitize_memory)) \
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__attribute__((no_sanitize_thread)) \
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__attribute__((visibility("default"))) \
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__attribute__((used))
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#endif
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#if defined(ADDRESS_SANITIZER)
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// Default options for AddressSanitizer in various configurations:
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// malloc_context_size=5 - limit the size of stack traces collected by ASan
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// for each malloc/free by 5 frames. These stack traces tend to accumulate
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// very fast in applications using JIT (v8 in Chrome's case), see
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// https://code.google.com/p/address-sanitizer/issues/detail?id=177
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// symbolize=false - disable the in-process symbolization, which isn't 100%
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// compatible with the existing sandboxes and doesn't make much sense for
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// stripped official binaries.
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// legacy_pthread_cond=1 - run in the libpthread 2.2.5 compatibility mode to
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// work around libGL.so using the obsolete API, see
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// http://crbug.com/341805. This may break if pthread_cond_t objects are
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// accessed by both instrumented and non-instrumented binaries (e.g. if
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// they reside in shared memory). This option is going to be deprecated in
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// upstream AddressSanitizer and must not be used anywhere except the
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// official builds.
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// check_printf=1 - check the memory accesses to printf (and other formatted
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// output routines) arguments.
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// use_sigaltstack=1 - handle signals on an alternate signal stack. Useful
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// for stack overflow detection.
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// strip_path_prefix=Release/../../ - prefixes up to and including this
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// substring will be stripped from source file paths in symbolized reports
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// (if symbolize=true, which is set when running with LeakSanitizer).
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// fast_unwind_on_fatal=1 - use the fast (frame-pointer-based) stack unwinder
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// to print error reports. V8 doesn't generate debug info for the JIT code,
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// so the slow unwinder may not work properly.
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// detect_stack_use_after_return=1 - use fake stack to delay the reuse of
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// stack allocations and detect stack-use-after-return errors.
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#if defined(OS_LINUX)
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#if defined(GOOGLE_CHROME_BUILD)
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// Default AddressSanitizer options for the official build. These do not affect
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// tests on buildbots (which don't set GOOGLE_CHROME_BUILD) or non-official
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// Chromium builds.
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const char kAsanDefaultOptions[] =
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"legacy_pthread_cond=1 malloc_context_size=5 "
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"symbolize=false check_printf=1 use_sigaltstack=1 detect_leaks=0 "
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"strip_path_prefix=Release/../../ fast_unwind_on_fatal=1";
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#else
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// Default AddressSanitizer options for buildbots and non-official builds.
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const char *kAsanDefaultOptions =
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"symbolize=false check_printf=1 use_sigaltstack=1 "
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"detect_leaks=0 strip_path_prefix=Release/../../ fast_unwind_on_fatal=1 "
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"detect_stack_use_after_return=1 ";
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#endif // GOOGLE_CHROME_BUILD
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#elif defined(OS_MACOSX)
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const char *kAsanDefaultOptions =
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"check_printf=1 use_sigaltstack=1 "
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"strip_path_prefix=Release/../../ fast_unwind_on_fatal=1 "
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"detect_stack_use_after_return=1 detect_odr_violation=0 ";
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static const char kNaClDefaultOptions[] = "handle_segv=0";
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static const char kNaClFlag[] = "--type=nacl-loader";
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#endif // OS_LINUX
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#if defined(OS_LINUX) || defined(OS_MACOSX)
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SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_options() {
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#if defined(OS_MACOSX)
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char*** argvp = _NSGetArgv();
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int* argcp = _NSGetArgc();
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if (!argvp || !argcp) return kAsanDefaultOptions;
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char** argv = *argvp;
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int argc = *argcp;
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for (int i = 0; i < argc; ++i) {
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if (strcmp(argv[i], kNaClFlag) == 0) {
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return kNaClDefaultOptions;
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}
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}
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#endif
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return kAsanDefaultOptions;
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}
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extern "C" char kASanDefaultSuppressions[];
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SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_suppressions() {
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return kASanDefaultSuppressions;
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}
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#endif // OS_LINUX || OS_MACOSX
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#endif // ADDRESS_SANITIZER
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#if defined(THREAD_SANITIZER) && defined(OS_LINUX)
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// Default options for ThreadSanitizer in various configurations:
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// detect_deadlocks=1 - enable deadlock (lock inversion) detection.
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// second_deadlock_stack=1 - more verbose deadlock reports.
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// report_signal_unsafe=0 - do not report async-signal-unsafe functions
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// called from signal handlers.
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// report_thread_leaks=0 - do not report unjoined threads at the end of
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// the program execution.
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// print_suppressions=1 - print the list of matched suppressions.
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// history_size=7 - make the history buffer proportional to 2^7 (the maximum
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// value) to keep more stack traces.
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// strip_path_prefix=Release/../../ - prefixes up to and including this
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// substring will be stripped from source file paths in symbolized reports.
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const char kTsanDefaultOptions[] =
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"detect_deadlocks=1 second_deadlock_stack=1 report_signal_unsafe=0 "
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"report_thread_leaks=0 print_suppressions=1 history_size=7 "
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"strip_path_prefix=Release/../../ ";
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SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_options() {
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return kTsanDefaultOptions;
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}
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extern "C" char kTSanDefaultSuppressions[];
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SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_suppressions() {
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return kTSanDefaultSuppressions;
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}
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#endif // THREAD_SANITIZER && OS_LINUX
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#if defined(LEAK_SANITIZER)
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// Default options for LeakSanitizer:
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// print_suppressions=1 - print the list of matched suppressions.
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// strip_path_prefix=Release/../../ - prefixes up to and including this
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// substring will be stripped from source file paths in symbolized reports.
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const char kLsanDefaultOptions[] =
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"print_suppressions=1 strip_path_prefix=Release/../../ ";
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SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_options() {
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return kLsanDefaultOptions;
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}
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extern "C" char kLSanDefaultSuppressions[];
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SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_suppressions() {
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return kLSanDefaultSuppressions;
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}
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#endif // LEAK_SANITIZER
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