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📄 ubsan.syms.extra(10 B)
📄 ubsan_checks.inc(3.71 KB)
📄 ubsan_diag.cpp(14.53 KB)
📄 ubsan_diag.h(7.57 KB)
📄 ubsan_diag_standalone.cpp(1.24 KB)
📄 ubsan_flags.cpp(2.26 KB)
📄 ubsan_flags.h(1.28 KB)
📄 ubsan_flags.inc(1.25 KB)
📄 ubsan_handlers.cpp(32.22 KB)
📄 ubsan_handlers.h(7.12 KB)
📄 ubsan_handlers_cxx.cpp(7.2 KB)
📄 ubsan_handlers_cxx.h(2.1 KB)
📄 ubsan_init.cpp(1.79 KB)
📄 ubsan_init.h(1.06 KB)
📄 ubsan_init_standalone.cpp(977 B)
📄 ubsan_init_standalone_preinit.cpp(1.04 KB)
📄 ubsan_interface.inc(3.25 KB)
📄 ubsan_monitor.cpp(2.67 KB)
📄 ubsan_monitor.h(1.72 KB)
📄 ubsan_platform.h(952 B)
📄 ubsan_signals_standalone.cpp(2.46 KB)
📄 ubsan_signals_standalone.h(775 B)
📄 ubsan_type_hash.cpp(1.25 KB)
📄 ubsan_type_hash.h(2.73 KB)
📄 ubsan_type_hash_itanium.cpp(9.47 KB)
📄 ubsan_type_hash_win.cpp(2.82 KB)
📄 ubsan_value.cpp(5.21 KB)
📄 ubsan_value.h(6.04 KB)
📄 ubsan_win_dll_thunk.cpp(1.02 KB)
📄 ubsan_win_dynamic_runtime_thunk.cpp(952 B)
📄 ubsan_win_weak_interception.cpp(1.15 KB)
📄 weak_symbols.txt(25 B)

Editing: ubsan_signals_standalone.cpp

//=-- ubsan_signals_standalone.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
//
//===----------------------------------------------------------------------===//
//
// Installs signal handlers and related interceptors for UBSan standalone.
//
//===----------------------------------------------------------------------===//

#include "ubsan_platform.h"
#include "sanitizer_common/sanitizer_platform.h"
#if CAN_SANITIZE_UB
#include "interception/interception.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "ubsan_diag.h"
#include "ubsan_init.h"

// Interception of signals breaks too many things on Android.
// * It requires that ubsan is the first dependency of the main executable for
// the interceptors to work correctly. This complicates deployment, as it
// prevents us from enabling ubsan on random platform modules independently.
// * For this to work with ART VM, ubsan signal handler has to be set after the
// debuggerd handler, but before the ART handler.
// * Interceptors don't work at all when ubsan runtime is loaded late, ex. when
// it is part of an APK that does not use wrap.sh method.
#if SANITIZER_FUCHSIA || SANITIZER_ANDROID

namespace __ubsan {
void InitializeDeadlySignals() {}
}

#else

#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
#include "sanitizer_common/sanitizer_signal_interceptors.inc"

// TODO(yln): Temporary workaround. Will be removed.
void ubsan_GetStackTrace(BufferedStackTrace *stack, uptr max_depth,
                         uptr pc, uptr bp, void *context, bool fast);

namespace __ubsan {

static void OnStackUnwind(const SignalContext &sig, const void *,
                          BufferedStackTrace *stack) {
  ubsan_GetStackTrace(stack, kStackTraceMax,
                      StackTrace::GetNextInstructionPc(sig.pc), sig.bp,
                      sig.context, common_flags()->fast_unwind_on_fatal);
}

static void UBsanOnDeadlySignal(int signo, void *siginfo, void *context) {
  HandleDeadlySignal(siginfo, context, GetTid(), &OnStackUnwind, nullptr);
}

static bool is_initialized = false;

void InitializeDeadlySignals() {
  if (is_initialized)
    return;
  is_initialized = true;
  InitializeSignalInterceptors();
  InstallDeadlySignalHandlers(&UBsanOnDeadlySignal);
}

} // namespace __ubsan

#endif

#endif // CAN_SANITIZE_UB

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Editing: ubsan_signals_standalone.cpp

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