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-rw-r--r--lib/sanitizer_common/sanitizer_common.h29
1 files changed, 19 insertions, 10 deletions
diff --git a/lib/sanitizer_common/sanitizer_common.h b/lib/sanitizer_common/sanitizer_common.h
index 1703899e32b5..87b8f02b5b73 100644
--- a/lib/sanitizer_common/sanitizer_common.h
+++ b/lib/sanitizer_common/sanitizer_common.h
@@ -100,6 +100,8 @@ void UnmapOrDie(void *addr, uptr size);
void *MmapOrDieOnFatalError(uptr size, const char *mem_type);
bool MmapFixedNoReserve(uptr fixed_addr, uptr size, const char *name = nullptr)
WARN_UNUSED_RESULT;
+bool MmapFixedSuperNoReserve(uptr fixed_addr, uptr size,
+ const char *name = nullptr) WARN_UNUSED_RESULT;
void *MmapNoReserveOrDie(uptr size, const char *mem_type);
void *MmapFixedOrDie(uptr fixed_addr, uptr size, const char *name = nullptr);
// Behaves just like MmapFixedOrDie, but tolerates out of memory condition, in
@@ -131,7 +133,7 @@ void ReleaseMemoryPagesToOS(uptr beg, uptr end);
void IncreaseTotalMmap(uptr size);
void DecreaseTotalMmap(uptr size);
uptr GetRSS();
-bool NoHugePagesInRegion(uptr addr, uptr length);
+void SetShadowRegionHugePageMode(uptr addr, uptr length);
bool DontDumpShadowMemory(uptr addr, uptr length);
// Check if the built VMA size matches the runtime one.
void CheckVMASize();
@@ -337,18 +339,18 @@ void ReportMmapWriteExec(int prot);
// Math
#if SANITIZER_WINDOWS && !defined(__clang__) && !defined(__GNUC__)
extern "C" {
-unsigned char _BitScanForward(unsigned long *index, unsigned long mask); // NOLINT
-unsigned char _BitScanReverse(unsigned long *index, unsigned long mask); // NOLINT
+unsigned char _BitScanForward(unsigned long *index, unsigned long mask);
+unsigned char _BitScanReverse(unsigned long *index, unsigned long mask);
#if defined(_WIN64)
-unsigned char _BitScanForward64(unsigned long *index, unsigned __int64 mask); // NOLINT
-unsigned char _BitScanReverse64(unsigned long *index, unsigned __int64 mask); // NOLINT
+unsigned char _BitScanForward64(unsigned long *index, unsigned __int64 mask);
+unsigned char _BitScanReverse64(unsigned long *index, unsigned __int64 mask);
#endif
}
#endif
INLINE uptr MostSignificantSetBitIndex(uptr x) {
CHECK_NE(x, 0U);
- unsigned long up; // NOLINT
+ unsigned long up;
#if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__)
# ifdef _WIN64
up = SANITIZER_WORDSIZE - 1 - __builtin_clzll(x);
@@ -365,7 +367,7 @@ INLINE uptr MostSignificantSetBitIndex(uptr x) {
INLINE uptr LeastSignificantSetBitIndex(uptr x) {
CHECK_NE(x, 0U);
- unsigned long up; // NOLINT
+ unsigned long up;
#if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__)
# ifdef _WIN64
up = __builtin_ctzll(x);
@@ -669,7 +671,7 @@ bool ReadFileToBuffer(const char *file_name, char **buff, uptr *buff_size,
error_t *errno_p = nullptr);
// When adding a new architecture, don't forget to also update
-// script/asan_symbolize.py and sanitizer_symbolizer_libcdep.cc.
+// script/asan_symbolize.py and sanitizer_symbolizer_libcdep.cpp.
inline const char *ModuleArchToString(ModuleArch arch) {
switch (arch) {
case kModuleArchUnknown:
@@ -879,6 +881,11 @@ struct SignalContext {
bool is_memory_access;
enum WriteFlag { UNKNOWN, READ, WRITE } write_flag;
+ // In some cases the kernel cannot provide the true faulting address; `addr`
+ // will be zero then. This field allows to distinguish between these cases
+ // and dereferences of null.
+ bool is_true_faulting_addr;
+
// VS2013 doesn't implement unrestricted unions, so we need a trivial default
// constructor
SignalContext() = default;
@@ -891,7 +898,8 @@ struct SignalContext {
context(context),
addr(GetAddress()),
is_memory_access(IsMemoryAccess()),
- write_flag(GetWriteFlag()) {
+ write_flag(GetWriteFlag()),
+ is_true_faulting_addr(IsTrueFaultingAddress()) {
InitPcSpBp();
}
@@ -912,6 +920,7 @@ struct SignalContext {
uptr GetAddress() const;
WriteFlag GetWriteFlag() const;
bool IsMemoryAccess() const;
+ bool IsTrueFaultingAddress() const;
};
void InitializePlatformEarly();
@@ -971,7 +980,7 @@ INLINE u32 GetNumberOfCPUsCached() {
} // namespace __sanitizer
inline void *operator new(__sanitizer::operator_new_size_type size,
- __sanitizer::LowLevelAllocator &alloc) {
+ __sanitizer::LowLevelAllocator &alloc) { // NOLINT
return alloc.Allocate(size);
}