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//===--- rtsan_diagnostics.cpp - Realtime Sanitizer -------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#include "rtsan/rtsan_diagnostics.h"
#include "sanitizer_common/sanitizer_flags.h"
#include "sanitizer_common/sanitizer_report_decorator.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
using namespace __sanitizer;
using namespace __rtsan;
// We must define our own implementation of this method for our runtime.
// This one is just copied from UBSan.
namespace __sanitizer {
void BufferedStackTrace::UnwindImpl(uptr pc, uptr bp, void *context,
bool request_fast, u32 max_depth) {
uptr top = 0;
uptr bottom = 0;
GetThreadStackTopAndBottom(false, &top, &bottom);
bool fast = StackTrace::WillUseFastUnwind(request_fast);
Unwind(max_depth, pc, bp, context, top, bottom, fast);
}
} // namespace __sanitizer
namespace {
class Decorator : public SanitizerCommonDecorator {
public:
Decorator() : SanitizerCommonDecorator() {}
const char *FunctionName() const { return Green(); }
const char *Reason() const { return Blue(); }
};
} // namespace
static const char *GetErrorTypeStr(const DiagnosticsInfo &info) {
switch (info.type) {
case DiagnosticsInfoType::InterceptedCall:
return "unsafe-library-call";
case DiagnosticsInfoType::BlockingCall:
return "blocking-call";
}
CHECK(false);
return "(unknown error)";
}
static void PrintError(const Decorator &decorator,
const DiagnosticsInfo &info) {
Printf("%s", decorator.Error());
Report("ERROR: RealtimeSanitizer: %s\n", GetErrorTypeStr(info));
}
static void PrintReason(const Decorator &decorator,
const DiagnosticsInfo &info) {
Printf("%s", decorator.Reason());
switch (info.type) {
case DiagnosticsInfoType::InterceptedCall: {
Printf("Intercepted call to real-time unsafe function "
"`%s%s%s` in real-time context!",
decorator.FunctionName(), info.func_name, decorator.Reason());
break;
}
case DiagnosticsInfoType::BlockingCall: {
Printf("Call to blocking function "
"`%s%s%s` in real-time context!",
decorator.FunctionName(), info.func_name, decorator.Reason());
break;
}
}
Printf("\n");
}
void __rtsan::PrintDiagnostics(const DiagnosticsInfo &info) {
ScopedErrorReportLock::CheckLocked();
Decorator d;
PrintError(d, info);
PrintReason(d, info);
Printf("%s", d.Default());
}
void __rtsan::PrintErrorSummary(const DiagnosticsInfo &info,
const BufferedStackTrace &stack) {
ScopedErrorReportLock::CheckLocked();
ReportErrorSummary(GetErrorTypeStr(info), &stack);
}
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