96 lines · cpp
1//===--- rtsan_diagnostics.cpp - Realtime Sanitizer -------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9//===----------------------------------------------------------------------===//10 11#include "rtsan/rtsan_diagnostics.h"12 13#include "sanitizer_common/sanitizer_flags.h"14#include "sanitizer_common/sanitizer_report_decorator.h"15#include "sanitizer_common/sanitizer_stacktrace.h"16 17using namespace __sanitizer;18using namespace __rtsan;19 20// We must define our own implementation of this method for our runtime.21// This one is just copied from UBSan.22namespace __sanitizer {23void BufferedStackTrace::UnwindImpl(uptr pc, uptr bp, void *context,24 bool request_fast, u32 max_depth) {25 uptr top = 0;26 uptr bottom = 0;27 GetThreadStackTopAndBottom(false, &top, &bottom);28 bool fast = StackTrace::WillUseFastUnwind(request_fast);29 Unwind(max_depth, pc, bp, context, top, bottom, fast);30}31} // namespace __sanitizer32 33namespace {34class Decorator : public SanitizerCommonDecorator {35public:36 Decorator() : SanitizerCommonDecorator() {}37 const char *FunctionName() const { return Green(); }38 const char *Reason() const { return Blue(); }39};40} // namespace41 42static const char *GetErrorTypeStr(const DiagnosticsInfo &info) {43 switch (info.type) {44 case DiagnosticsInfoType::InterceptedCall:45 return "unsafe-library-call";46 case DiagnosticsInfoType::BlockingCall:47 return "blocking-call";48 }49 CHECK(false);50 return "(unknown error)";51}52 53static void PrintError(const Decorator &decorator,54 const DiagnosticsInfo &info) {55 56 Printf("%s", decorator.Error());57 Report("ERROR: RealtimeSanitizer: %s\n", GetErrorTypeStr(info));58}59 60static void PrintReason(const Decorator &decorator,61 const DiagnosticsInfo &info) {62 Printf("%s", decorator.Reason());63 64 switch (info.type) {65 case DiagnosticsInfoType::InterceptedCall: {66 Printf("Intercepted call to real-time unsafe function "67 "`%s%s%s` in real-time context!",68 decorator.FunctionName(), info.func_name, decorator.Reason());69 break;70 }71 case DiagnosticsInfoType::BlockingCall: {72 Printf("Call to blocking function "73 "`%s%s%s` in real-time context!",74 decorator.FunctionName(), info.func_name, decorator.Reason());75 break;76 }77 }78 79 Printf("\n");80}81 82void __rtsan::PrintDiagnostics(const DiagnosticsInfo &info) {83 ScopedErrorReportLock::CheckLocked();84 85 Decorator d;86 PrintError(d, info);87 PrintReason(d, info);88 Printf("%s", d.Default());89}90 91void __rtsan::PrintErrorSummary(const DiagnosticsInfo &info,92 const BufferedStackTrace &stack) {93 ScopedErrorReportLock::CheckLocked();94 ReportErrorSummary(GetErrorTypeStr(info), &stack);95}96