117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
//=-- lsan.cpp ------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is a part of LeakSanitizer.
|
|
// Standalone LSan RTL.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lsan.h"
|
|
|
|
#include "sanitizer_common/sanitizer_flags.h"
|
|
#include "sanitizer_common/sanitizer_flag_parser.h"
|
|
#include "lsan_allocator.h"
|
|
#include "lsan_common.h"
|
|
#include "lsan_thread.h"
|
|
|
|
bool lsan_inited;
|
|
bool lsan_init_is_running;
|
|
|
|
namespace __lsan {
|
|
|
|
///// Interface to the common LSan module. /////
|
|
bool WordIsPoisoned(uptr addr) {
|
|
return false;
|
|
}
|
|
|
|
} // namespace __lsan
|
|
|
|
void __sanitizer::BufferedStackTrace::UnwindImpl(
|
|
uptr pc, uptr bp, void *context, bool request_fast, u32 max_depth) {
|
|
using namespace __lsan;
|
|
uptr stack_top = 0, stack_bottom = 0;
|
|
if (ThreadContext *t = CurrentThreadContext()) {
|
|
stack_top = t->stack_end();
|
|
stack_bottom = t->stack_begin();
|
|
}
|
|
if (SANITIZER_MIPS && !IsValidFrame(bp, stack_top, stack_bottom))
|
|
return;
|
|
bool fast = StackTrace::WillUseFastUnwind(request_fast);
|
|
Unwind(max_depth, pc, bp, context, stack_top, stack_bottom, fast);
|
|
}
|
|
|
|
using namespace __lsan;
|
|
|
|
static void InitializeFlags() {
|
|
// Set all the default values.
|
|
SetCommonFlagsDefaults();
|
|
{
|
|
CommonFlags cf;
|
|
cf.CopyFrom(*common_flags());
|
|
cf.external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
|
|
cf.malloc_context_size = 30;
|
|
cf.intercept_tls_get_addr = true;
|
|
cf.detect_leaks = true;
|
|
cf.exitcode = 23;
|
|
OverrideCommonFlags(cf);
|
|
}
|
|
|
|
Flags *f = flags();
|
|
f->SetDefaults();
|
|
|
|
FlagParser parser;
|
|
RegisterLsanFlags(&parser, f);
|
|
RegisterCommonFlags(&parser);
|
|
|
|
// Override from user-specified string.
|
|
const char *lsan_default_options = __lsan_default_options();
|
|
parser.ParseString(lsan_default_options);
|
|
parser.ParseStringFromEnv("LSAN_OPTIONS");
|
|
|
|
InitializeCommonFlags();
|
|
|
|
if (Verbosity()) ReportUnrecognizedFlags();
|
|
|
|
if (common_flags()->help) parser.PrintFlagDescriptions();
|
|
|
|
__sanitizer_set_report_path(common_flags()->log_path);
|
|
}
|
|
|
|
extern "C" void __lsan_init() {
|
|
CHECK(!lsan_init_is_running);
|
|
if (lsan_inited)
|
|
return;
|
|
lsan_init_is_running = true;
|
|
SanitizerToolName = "LeakSanitizer";
|
|
CacheBinaryName();
|
|
AvoidCVE_2016_2143();
|
|
InitializeFlags();
|
|
InitCommonLsan();
|
|
InitializeAllocator();
|
|
ReplaceSystemMalloc();
|
|
InitTlsSize();
|
|
InitializeInterceptors();
|
|
InitializeThreadRegistry();
|
|
InstallDeadlySignalHandlers(LsanOnDeadlySignal);
|
|
InitializeMainThread();
|
|
|
|
if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
|
|
Atexit(DoLeakCheck);
|
|
|
|
InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
|
|
|
|
lsan_inited = true;
|
|
lsan_init_is_running = false;
|
|
}
|
|
|
|
extern "C" SANITIZER_INTERFACE_ATTRIBUTE
|
|
void __sanitizer_print_stack_trace() {
|
|
GET_STACK_TRACE_FATAL;
|
|
stack.Print();
|
|
}
|