build/sanitizers/sanitizer_options.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // This file contains the default options for various compiler-based dynamic
   6 // tools.
   7
   8 #include "build/build_config.h"
   9
  10 // Functions returning default options are declared weak in the tools' runtime
  11 // libraries. To make the linker pick the strong replacements for those
  12 // functions from this module, we explicitly force its inclusion by passing
  13 // -Wl,-u_sanitizer_options_link_helper
  14 extern "C"
  15 void _sanitizer_options_link_helper() { }
  16
  17 #if defined(ADDRESS_SANITIZER)
  18 // Default options for AddressSanitizer in various configurations:
  19 //   strict_memcmp=1 - disable the strict memcmp() checking
  20 //     (http://crbug.com/178677 and http://crbug.com/178404).
  21 //   malloc_context_size=5 - limit the size of stack traces collected by ASan
  22 //     for each malloc/free by 5 frames. These stack traces tend to accumulate
  23 //     very fast in applications using JIT (v8 in Chrome's case), see
  24 //     https://code.google.com/p/address-sanitizer/issues/detail?id=177
  25 //   symbolize=false - disable the in-process symbolization, which isn't 100%
  26 //     compatible with the existing sandboxes and doesn't make much sense for
  27 //     stripped official binaries.
  28 //   legacy_pthread_cond=1 - run in the libpthread 2.2.5 compatibility mode to
  29 //     work around libGL.so using the obsolete API, see
  30 //     http://crbug.com/341805. This may break if pthread_cond_t objects are
  31 //     accessed by both instrumented and non-instrumented binaries (e.g. if
  32 //     they reside in shared memory). This option is going to be deprecated in
  33 //     upstream AddressSanitizer and must not be used anywhere except the
  34 //     official builds.
  35 //   replace_intrin=0 - do not intercept memcpy(), memmove() and memset() to
  36 //     work around http://crbug.com/162461 (ASan report in OpenCL on Mac).
  37 //   check_printf=1 - check the memory accesses to printf (and other formatted
  38 //     output routines) arguments.
  39 //   use_sigaltstack=1 - handle signals on an alternate signal stack. Useful
  40 //     for stack overflow detection.
  41 //   strip_path_prefix=Release/../../ - prefixes up to and including this
  42 //     substring will be stripped from source file paths in symbolized reports
  43 //     (if symbolize=true, which is set when running with LeakSanitizer).
  44 #if defined(OS_LINUX)
  45 #if defined(GOOGLE_CHROME_BUILD)
  46 // Default AddressSanitizer options for the official build. These do not affect
  47 // tests on buildbots (which don't set GOOGLE_CHROME_BUILD) or non-official
  48 // Chromium builds.
  49 const char kAsanDefaultOptions[] =
  50     "legacy_pthread_cond=1 malloc_context_size=5 strict_memcmp=0 "
  51     "symbolize=false check_printf=1 use_sigaltstack=1 detect_leaks=0 "
  52     "strip_path_prefix=Release/../../ ";
  53 #else
  54 // Default AddressSanitizer options for buildbots and non-official builds.
  55 const char *kAsanDefaultOptions =
  56     "strict_memcmp=0 symbolize=false check_printf=1 use_sigaltstack=1 "
  57     "detect_leaks=0 strip_path_prefix=Release/../../ ";
  58 #endif  // GOOGLE_CHROME_BUILD
  59
  60 #elif defined(OS_MACOSX)
  61 const char *kAsanDefaultOptions =
  62     "strict_memcmp=0 replace_intrin=0 check_printf=1 use_sigaltstack=1 "
  63     "strip_path_prefix=Release/../../ ";
  64 #endif  // OS_LINUX
  65
  66 #if defined(OS_LINUX) || defined(OS_MACOSX)
  67 extern "C"
  68 __attribute__((no_sanitize_address))
  69 __attribute__((visibility("default")))
  70 // The function isn't referenced from the executable itself. Make sure it isn't
  71 // stripped by the linker.
  72 __attribute__((used))
  73 const char *__asan_default_options() {
  74   return kAsanDefaultOptions;
  75 }
  76 #endif  // OS_LINUX || OS_MACOSX
  77 #endif  // ADDRESS_SANITIZER
  78
  79 #if defined(THREAD_SANITIZER) && defined(OS_LINUX)
  80 // Default options for ThreadSanitizer in various configurations:
  81 //   detect_deadlocks=1 - enable deadlock (lock inversion) detection.
  82 //   second_deadlock_stack=1 - more verbose deadlock reports.
  83 //   report_signal_unsafe=0 - do not report async-signal-unsafe functions
  84 //     called from signal handlers.
  85 //   report_thread_leaks=0 - do not report unjoined threads at the end of
  86 //     the program execution.
  87 //   print_suppressions=1 - print the list of matched suppressions.
  88 //   history_size=7 - make the history buffer proportional to 2^7 (the maximum
  89 //     value) to keep more stack traces.
  90 //   strip_path_prefix=Release/../../ - prefixes up to and including this
  91 //     substring will be stripped from source file paths in symbolized reports.
  92 const char kTsanDefaultOptions[] =
  93     "detect_deadlocks=1 second_deadlock_stack=1 report_signal_unsafe=0 "
  94     "report_thread_leaks=0 print_suppressions=1 history_size=7 "
  95     "strip_path_prefix=Release/../../ ";
  96
  97 extern "C"
  98 __attribute__((no_sanitize_thread))
  99 __attribute__((visibility("default")))
 100 // The function isn't referenced from the executable itself. Make sure it isn't
 101 // stripped by the linker.
 102 __attribute__((used))
 103 const char *__tsan_default_options() {
 104   return kTsanDefaultOptions;
 105 }
 106
 107 extern "C" char kTSanDefaultSuppressions[];
 108
 109 extern "C"
 110 __attribute__((no_sanitize_thread))
 111 __attribute__((visibility("default")))
 112 // The function isn't referenced from the executable itself. Make sure it isn't
 113 // stripped by the linker.
 114 __attribute__((used))
 115 const char *__tsan_default_suppressions() {
 116   return kTSanDefaultSuppressions;
 117 }
 118
 119 #endif  // THREAD_SANITIZER && OS_LINUX