aboutsummaryrefslogtreecommitdiff
path: root/lib/msan/msan.cc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/msan/msan.cc')
-rw-r--r--lib/msan/msan.cc44
1 files changed, 36 insertions, 8 deletions
diff --git a/lib/msan/msan.cc b/lib/msan/msan.cc
index ed6efbdd682f..163d59dabfa8 100644
--- a/lib/msan/msan.cc
+++ b/lib/msan/msan.cc
@@ -26,6 +26,8 @@
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "sanitizer_common/sanitizer_symbolizer.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
+#include "ubsan/ubsan_flags.h"
+#include "ubsan/ubsan_init.h"
// ACHTUNG! No system header includes in this file.
@@ -133,11 +135,6 @@ static void RegisterMsanFlags(FlagParser *parser, Flags *f) {
}
static void InitializeFlags() {
- Flags *f = flags();
- FlagParser parser;
- RegisterMsanFlags(&parser, f);
- RegisterCommonFlags(&parser);
-
SetCommonFlagsDefaults();
{
CommonFlags cf;
@@ -151,14 +148,35 @@ static void InitializeFlags() {
OverrideCommonFlags(cf);
}
+ Flags *f = flags();
f->SetDefaults();
+ FlagParser parser;
+ RegisterMsanFlags(&parser, f);
+ RegisterCommonFlags(&parser);
+
+#if MSAN_CONTAINS_UBSAN
+ __ubsan::Flags *uf = __ubsan::flags();
+ uf->SetDefaults();
+
+ FlagParser ubsan_parser;
+ __ubsan::RegisterUbsanFlags(&ubsan_parser, uf);
+ RegisterCommonFlags(&ubsan_parser);
+#endif
+
// Override from user-specified string.
if (__msan_default_options)
parser.ParseString(__msan_default_options());
+#if MSAN_CONTAINS_UBSAN
+ const char *ubsan_default_options = __ubsan::MaybeCallUbsanDefaultOptions();
+ ubsan_parser.ParseString(ubsan_default_options);
+#endif
const char *msan_options = GetEnv("MSAN_OPTIONS");
parser.ParseString(msan_options);
+#if MSAN_CONTAINS_UBSAN
+ ubsan_parser.ParseString(GetEnv("UBSAN_OPTIONS"));
+#endif
VPrintf(1, "MSAN_OPTIONS: %s\n", msan_options ? msan_options : "<empty>");
SetVerbosity(common_flags()->verbosity);
@@ -355,13 +373,12 @@ void __msan_init() {
InitTlsSize();
InitializeFlags();
+ CacheBinaryName();
__sanitizer_set_report_path(common_flags()->log_path);
InitializeInterceptors();
InstallAtExitHandler(); // Needs __cxa_atexit interceptor.
- if (MSAN_REPLACE_OPERATORS_NEW_AND_DELETE)
- ReplaceOperatorsNewAndDelete();
DisableCoreDumperIfNecessary();
if (StackSizeIsUnlimited()) {
VPrintf(1, "Unlimited stack, doing reexec\n");
@@ -374,7 +391,7 @@ void __msan_init() {
__msan_clear_on_return();
if (__msan_get_track_origins())
VPrintf(1, "msan_track_origins\n");
- if (!InitShadow(/* map_shadow */ true, __msan_get_track_origins())) {
+ if (!InitShadow(__msan_get_track_origins())) {
Printf("FATAL: MemorySanitizer can not mmap the shadow memory.\n");
Printf("FATAL: Make sure to compile with -fPIE and to link with -pie.\n");
Printf("FATAL: Disabling ASLR is known to cause this error.\n");
@@ -394,6 +411,10 @@ void __msan_init() {
SetCurrentThread(main_thread);
main_thread->ThreadStart();
+#if MSAN_CONTAINS_UBSAN
+ __ubsan::InitAsPlugin();
+#endif
+
VPrintf(1, "MemorySanitizer init done\n");
msan_init_is_running = 0;
@@ -543,6 +564,13 @@ u32 __msan_get_origin(const void *a) {
return *(u32*)origin_ptr;
}
+int __msan_origin_is_descendant_or_same(u32 this_id, u32 prev_id) {
+ Origin o = Origin::FromRawId(this_id);
+ while (o.raw_id() != prev_id && o.isChainedOrigin())
+ o = o.getNextChainedOrigin(nullptr);
+ return o.raw_id() == prev_id;
+}
+
u32 __msan_get_umr_origin() {
return __msan_origin_tls;
}