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//===-- hwasan_report.cc ----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of HWAddressSanitizer.
//
// Error reporting.
//===----------------------------------------------------------------------===//
#include "hwasan.h"
#include "hwasan_allocator.h"
#include "sanitizer_common/sanitizer_allocator_internal.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_flags.h"
#include "sanitizer_common/sanitizer_mutex.h"
#include "sanitizer_common/sanitizer_report_decorator.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_symbolizer.h"
using namespace __sanitizer;
namespace __hwasan {
static StackTrace GetStackTraceFromId(u32 id) {
CHECK(id);
StackTrace res = StackDepotGet(id);
CHECK(res.trace);
return res;
}
class Decorator: public __sanitizer::SanitizerCommonDecorator {
public:
Decorator() : SanitizerCommonDecorator() { }
const char *Allocation() { return Magenta(); }
const char *Origin() { return Magenta(); }
const char *Name() { return Green(); }
};
struct HeapAddressDescription {
uptr addr;
u32 alloc_stack_id;
u32 free_stack_id;
void Print() const {
Decorator d;
if (free_stack_id) {
Printf("%sfreed here:%s\n", d.Allocation(), d.Default());
GetStackTraceFromId(free_stack_id).Print();
Printf("%spreviously allocated here:%s\n", d.Allocation(), d.Default());
} else {
Printf("%sallocated here:%s\n", d.Allocation(), d.Default());
}
GetStackTraceFromId(alloc_stack_id).Print();
}
};
bool GetHeapAddressInformation(uptr addr, uptr access_size,
HeapAddressDescription *description) {
HwasanChunkView chunk = FindHeapChunkByAddress(addr);
if (!chunk.IsValid())
return false;
description->addr = addr;
description->alloc_stack_id = chunk.GetAllocStackId();
description->free_stack_id = chunk.GetFreeStackId();
return true;
}
void PrintAddressDescription(uptr addr, uptr access_size) {
HeapAddressDescription heap_description;
if (GetHeapAddressInformation(addr, access_size, &heap_description)) {
heap_description.Print();
return;
}
// We exhausted our possibilities. Bail out.
Printf("HWAddressSanitizer can not describe address in more detail.\n");
}
void ReportInvalidAccess(StackTrace *stack, u32 origin) {
ScopedErrorReportLock l;
Decorator d;
Printf("%s", d.Warning());
Report("WARNING: HWAddressSanitizer: invalid access\n");
Printf("%s", d.Default());
stack->Print();
ReportErrorSummary("invalid-access", stack);
}
void ReportStats() {}
void ReportInvalidAccessInsideAddressRange(const char *what, const void *start,
uptr size, uptr offset) {
ScopedErrorReportLock l;
Decorator d;
Printf("%s", d.Warning());
Printf("%sTag mismatch in %s%s%s at offset %zu inside [%p, %zu)%s\n",
d.Warning(), d.Name(), what, d.Warning(), offset, start, size,
d.Default());
PrintAddressDescription((uptr)start + offset, 1);
// if (__sanitizer::Verbosity())
// DescribeMemoryRange(start, size);
}
void ReportTagMismatch(StackTrace *stack, uptr addr, uptr access_size,
bool is_store) {
ScopedErrorReportLock l;
Decorator d;
Printf("%s", d.Warning());
uptr address = GetAddressFromPointer(addr);
Printf("%s of size %zu at %p\n", is_store ? "WRITE" : "READ", access_size,
address);
tag_t ptr_tag = GetTagFromPointer(addr);
tag_t mem_tag = *(tag_t *)MEM_TO_SHADOW(address);
Printf("pointer tag 0x%x\nmemory tag 0x%x\n", ptr_tag, mem_tag);
Printf("%s", d.Default());
stack->Print();
PrintAddressDescription(address, access_size);
ReportErrorSummary("tag-mismatch", stack);
}
} // namespace __hwasan
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