| //===-- msan.h --------------------------------------------------*- C++ -*-===// |
| // |
| // 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 MemorySanitizer. |
| // |
| // Private MSan header. |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef MSAN_H |
| #define MSAN_H |
| |
| #include "sanitizer_common/sanitizer_flags.h" |
| #include "sanitizer_common/sanitizer_internal_defs.h" |
| #include "sanitizer_common/sanitizer_stacktrace.h" |
| #include "msan_interface_internal.h" |
| #include "msan_flags.h" |
| #include "ubsan/ubsan_platform.h" |
| |
| #ifndef MSAN_REPLACE_OPERATORS_NEW_AND_DELETE |
| # define MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 1 |
| #endif |
| |
| #ifndef MSAN_CONTAINS_UBSAN |
| # define MSAN_CONTAINS_UBSAN CAN_SANITIZE_UB |
| #endif |
| |
| struct MappingDesc { |
| uptr start; |
| uptr end; |
| enum Type { |
| INVALID, APP, SHADOW, ORIGIN |
| } type; |
| const char *name; |
| }; |
| |
| |
| #if SANITIZER_LINUX && defined(__mips64) |
| |
| // MIPS64 maps: |
| // - 0x0000000000-0x0200000000: Program own segments |
| // - 0xa200000000-0xc000000000: PIE program segments |
| // - 0xe200000000-0xffffffffff: libraries segments. |
| const MappingDesc kMemoryLayout[] = { |
| {0x000000000000ULL, 0x000200000000ULL, MappingDesc::APP, "app-1"}, |
| {0x000200000000ULL, 0x002200000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x002200000000ULL, 0x004000000000ULL, MappingDesc::SHADOW, "shadow-2"}, |
| {0x004000000000ULL, 0x004200000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x004200000000ULL, 0x006000000000ULL, MappingDesc::ORIGIN, "origin-2"}, |
| {0x006000000000ULL, 0x006200000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x006200000000ULL, 0x008000000000ULL, MappingDesc::SHADOW, "shadow-3"}, |
| {0x008000000000ULL, 0x008200000000ULL, MappingDesc::SHADOW, "shadow-1"}, |
| {0x008200000000ULL, 0x00a000000000ULL, MappingDesc::ORIGIN, "origin-3"}, |
| {0x00a000000000ULL, 0x00a200000000ULL, MappingDesc::ORIGIN, "origin-1"}, |
| {0x00a200000000ULL, 0x00c000000000ULL, MappingDesc::APP, "app-2"}, |
| {0x00c000000000ULL, 0x00e200000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x00e200000000ULL, 0x00ffffffffffULL, MappingDesc::APP, "app-3"}}; |
| |
| #define MEM_TO_SHADOW(mem) (((uptr)(mem)) ^ 0x8000000000ULL) |
| #define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x2000000000ULL) |
| |
| #elif SANITIZER_LINUX && defined(__aarch64__) |
| |
| // The mapping describes both 39-bits, 42-bits, and 48-bits VMA. AArch64 |
| // maps: |
| // - 0x0000000000000-0x0000010000000: 39/42/48-bits program own segments |
| // - 0x0005500000000-0x0005600000000: 39-bits PIE program segments |
| // - 0x0007f80000000-0x0007fffffffff: 39-bits libraries segments |
| // - 0x002aa00000000-0x002ab00000000: 42-bits PIE program segments |
| // - 0x003ff00000000-0x003ffffffffff: 42-bits libraries segments |
| // - 0x0aaaaa0000000-0x0aaab00000000: 48-bits PIE program segments |
| // - 0xffff000000000-0x1000000000000: 48-bits libraries segments |
| // It is fragmented in multiples segments to increase the memory available |
| // on 42-bits (12.21% of total VMA available for 42-bits and 13.28 for |
| // 39 bits). The 48-bits segments only cover the usual PIE/default segments |
| // plus some more segments (262144GB total, 0.39% total VMA). |
| const MappingDesc kMemoryLayout[] = { |
| {0x00000000000ULL, 0x01000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x01000000000ULL, 0x02000000000ULL, MappingDesc::SHADOW, "shadow-2"}, |
| {0x02000000000ULL, 0x03000000000ULL, MappingDesc::ORIGIN, "origin-2"}, |
| {0x03000000000ULL, 0x04000000000ULL, MappingDesc::SHADOW, "shadow-1"}, |
| {0x04000000000ULL, 0x05000000000ULL, MappingDesc::ORIGIN, "origin-1"}, |
| {0x05000000000ULL, 0x06000000000ULL, MappingDesc::APP, "app-1"}, |
| {0x06000000000ULL, 0x07000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x07000000000ULL, 0x08000000000ULL, MappingDesc::APP, "app-2"}, |
| {0x08000000000ULL, 0x09000000000ULL, MappingDesc::INVALID, "invalid"}, |
| // The mappings below are used only for 42-bits VMA. |
| {0x09000000000ULL, 0x0A000000000ULL, MappingDesc::SHADOW, "shadow-3"}, |
| {0x0A000000000ULL, 0x0B000000000ULL, MappingDesc::ORIGIN, "origin-3"}, |
| {0x0B000000000ULL, 0x0F000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0F000000000ULL, 0x10000000000ULL, MappingDesc::APP, "app-3"}, |
| {0x10000000000ULL, 0x11000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x11000000000ULL, 0x12000000000ULL, MappingDesc::APP, "app-4"}, |
| {0x12000000000ULL, 0x17000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x17000000000ULL, 0x18000000000ULL, MappingDesc::SHADOW, "shadow-4"}, |
| {0x18000000000ULL, 0x19000000000ULL, MappingDesc::ORIGIN, "origin-4"}, |
| {0x19000000000ULL, 0x20000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x20000000000ULL, 0x21000000000ULL, MappingDesc::APP, "app-5"}, |
| {0x21000000000ULL, 0x26000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x26000000000ULL, 0x27000000000ULL, MappingDesc::SHADOW, "shadow-5"}, |
| {0x27000000000ULL, 0x28000000000ULL, MappingDesc::ORIGIN, "origin-5"}, |
| {0x28000000000ULL, 0x29000000000ULL, MappingDesc::SHADOW, "shadow-7"}, |
| {0x29000000000ULL, 0x2A000000000ULL, MappingDesc::ORIGIN, "origin-7"}, |
| {0x2A000000000ULL, 0x2B000000000ULL, MappingDesc::APP, "app-6"}, |
| {0x2B000000000ULL, 0x2C000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x2C000000000ULL, 0x2D000000000ULL, MappingDesc::SHADOW, "shadow-6"}, |
| {0x2D000000000ULL, 0x2E000000000ULL, MappingDesc::ORIGIN, "origin-6"}, |
| {0x2E000000000ULL, 0x2F000000000ULL, MappingDesc::APP, "app-7"}, |
| {0x2F000000000ULL, 0x39000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x39000000000ULL, 0x3A000000000ULL, MappingDesc::SHADOW, "shadow-9"}, |
| {0x3A000000000ULL, 0x3B000000000ULL, MappingDesc::ORIGIN, "origin-9"}, |
| {0x3B000000000ULL, 0x3C000000000ULL, MappingDesc::APP, "app-8"}, |
| {0x3C000000000ULL, 0x3D000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x3D000000000ULL, 0x3E000000000ULL, MappingDesc::SHADOW, "shadow-8"}, |
| {0x3E000000000ULL, 0x3F000000000ULL, MappingDesc::ORIGIN, "origin-8"}, |
| {0x3F000000000ULL, 0x40000000000ULL, MappingDesc::APP, "app-9"}, |
| // The mappings below are used only for 48-bits VMA. |
| // TODO(unknown): 48-bit mapping ony covers the usual PIE, non-PIE |
| // segments and some more segments totalizing 262144GB of VMA (which cover |
| // only 0.32% of all 48-bit VMA). Memory avaliability can be increase by |
| // adding multiple application segments like 39 and 42 mapping. |
| {0x0040000000000ULL, 0x0041000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0041000000000ULL, 0x0042000000000ULL, MappingDesc::APP, "app-10"}, |
| {0x0042000000000ULL, 0x0047000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0047000000000ULL, 0x0048000000000ULL, MappingDesc::SHADOW, "shadow-10"}, |
| {0x0048000000000ULL, 0x0049000000000ULL, MappingDesc::ORIGIN, "origin-10"}, |
| {0x0049000000000ULL, 0x0050000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0050000000000ULL, 0x0051000000000ULL, MappingDesc::APP, "app-11"}, |
| {0x0051000000000ULL, 0x0056000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0056000000000ULL, 0x0057000000000ULL, MappingDesc::SHADOW, "shadow-11"}, |
| {0x0057000000000ULL, 0x0058000000000ULL, MappingDesc::ORIGIN, "origin-11"}, |
| {0x0058000000000ULL, 0x0059000000000ULL, MappingDesc::APP, "app-12"}, |
| {0x0059000000000ULL, 0x005E000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x005E000000000ULL, 0x005F000000000ULL, MappingDesc::SHADOW, "shadow-12"}, |
| {0x005F000000000ULL, 0x0060000000000ULL, MappingDesc::ORIGIN, "origin-12"}, |
| {0x0060000000000ULL, 0x0061000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0061000000000ULL, 0x0062000000000ULL, MappingDesc::APP, "app-13"}, |
| {0x0062000000000ULL, 0x0067000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0067000000000ULL, 0x0068000000000ULL, MappingDesc::SHADOW, "shadow-13"}, |
| {0x0068000000000ULL, 0x0069000000000ULL, MappingDesc::ORIGIN, "origin-13"}, |
| {0x0069000000000ULL, 0x0AAAAA0000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0AAAAA0000000ULL, 0x0AAAB00000000ULL, MappingDesc::APP, "app-14"}, |
| {0x0AAAB00000000ULL, 0x0AACAA0000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0AACAA0000000ULL, 0x0AACB00000000ULL, MappingDesc::SHADOW, "shadow-14"}, |
| {0x0AACB00000000ULL, 0x0AADAA0000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0AADAA0000000ULL, 0x0AADB00000000ULL, MappingDesc::ORIGIN, "origin-14"}, |
| {0x0AADB00000000ULL, 0x0FF9F00000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0FF9F00000000ULL, 0x0FFA000000000ULL, MappingDesc::SHADOW, "shadow-15"}, |
| {0x0FFA000000000ULL, 0x0FFAF00000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0FFAF00000000ULL, 0x0FFB000000000ULL, MappingDesc::ORIGIN, "origin-15"}, |
| {0x0FFB000000000ULL, 0x0FFFF00000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x0FFFF00000000ULL, 0x1000000000000ULL, MappingDesc::APP, "app-15"}, |
| }; |
| # define MEM_TO_SHADOW(mem) ((uptr)mem ^ 0x6000000000ULL) |
| # define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x1000000000ULL) |
| |
| #elif SANITIZER_LINUX && SANITIZER_PPC64 |
| const MappingDesc kMemoryLayout[] = { |
| {0x000000000000ULL, 0x000200000000ULL, MappingDesc::APP, "low memory"}, |
| {0x000200000000ULL, 0x080000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x080000000000ULL, 0x180200000000ULL, MappingDesc::SHADOW, "shadow"}, |
| {0x180200000000ULL, 0x1C0000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x1C0000000000ULL, 0x2C0200000000ULL, MappingDesc::ORIGIN, "origin"}, |
| {0x2C0200000000ULL, 0x300000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x300000000000ULL, 0x800000000000ULL, MappingDesc::APP, "high memory"}}; |
| |
| // Various kernels use different low end ranges but we can combine them into one |
| // big range. They also use different high end ranges but we can map them all to |
| // one range. |
| // Maps low and high app ranges to contiguous space with zero base: |
| // Low: 0000 0000 0000 - 0001 ffff ffff -> 1000 0000 0000 - 1001 ffff ffff |
| // High: 3000 0000 0000 - 3fff ffff ffff -> 0000 0000 0000 - 0fff ffff ffff |
| // High: 4000 0000 0000 - 4fff ffff ffff -> 0000 0000 0000 - 0fff ffff ffff |
| // High: 7000 0000 0000 - 7fff ffff ffff -> 0000 0000 0000 - 0fff ffff ffff |
| #define LINEARIZE_MEM(mem) \ |
| (((uptr)(mem) & ~0xE00000000000ULL) ^ 0x100000000000ULL) |
| #define MEM_TO_SHADOW(mem) (LINEARIZE_MEM((mem)) + 0x080000000000ULL) |
| #define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x140000000000ULL) |
| |
| #elif SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 64 |
| |
| // Low memory: main binary, MAP_32BIT mappings and modules |
| // High memory: heap, modules and main thread stack |
| const MappingDesc kMemoryLayout[] = { |
| {0x000000000000ULL, 0x010000000000ULL, MappingDesc::APP, "low memory"}, |
| {0x010000000000ULL, 0x100000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x100000000000ULL, 0x310000000000ULL, MappingDesc::SHADOW, "shadow"}, |
| {0x310000000000ULL, 0x380000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x380000000000ULL, 0x590000000000ULL, MappingDesc::ORIGIN, "origin"}, |
| {0x590000000000ULL, 0x600000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x600000000000ULL, 0x800000000000ULL, MappingDesc::APP, "high memory"}}; |
| |
| // Maps low and high app ranges to contiguous space with zero base: |
| // Low: 0000 0000 0000 - 00ff ffff ffff -> 2000 0000 0000 - 20ff ffff ffff |
| // High: 6000 0000 0000 - 7fff ffff ffff -> 0000 0000 0000 - 1fff ffff ffff |
| #define LINEARIZE_MEM(mem) \ |
| (((uptr)(mem) & ~0xc00000000000ULL) ^ 0x200000000000ULL) |
| #define MEM_TO_SHADOW(mem) (LINEARIZE_MEM((mem)) + 0x100000000000ULL) |
| #define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x280000000000) |
| |
| #elif SANITIZER_NETBSD || (SANITIZER_LINUX && SANITIZER_WORDSIZE == 64) |
| |
| #ifdef MSAN_LINUX_X86_64_OLD_MAPPING |
| // Requries PIE binary and ASLR enabled. |
| // Main thread stack and DSOs at 0x7f0000000000 (sometimes 0x7e0000000000). |
| // Heap at 0x600000000000. |
| const MappingDesc kMemoryLayout[] = { |
| {0x000000000000ULL, 0x200000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x200000000000ULL, 0x400000000000ULL, MappingDesc::SHADOW, "shadow"}, |
| {0x400000000000ULL, 0x600000000000ULL, MappingDesc::ORIGIN, "origin"}, |
| {0x600000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app"}}; |
| |
| #define MEM_TO_SHADOW(mem) (((uptr)(mem)) & ~0x400000000000ULL) |
| #define SHADOW_TO_ORIGIN(mem) (((uptr)(mem)) + 0x200000000000ULL) |
| #else // MSAN_LINUX_X86_64_OLD_MAPPING |
| // All of the following configurations are supported. |
| // ASLR disabled: main executable and DSOs at 0x555550000000 |
| // PIE and ASLR: main executable and DSOs at 0x7f0000000000 |
| // non-PIE: main executable below 0x100000000, DSOs at 0x7f0000000000 |
| // Heap at 0x700000000000. |
| const MappingDesc kMemoryLayout[] = { |
| {0x000000000000ULL, 0x010000000000ULL, MappingDesc::APP, "app-1"}, |
| {0x010000000000ULL, 0x100000000000ULL, MappingDesc::SHADOW, "shadow-2"}, |
| {0x100000000000ULL, 0x110000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x110000000000ULL, 0x200000000000ULL, MappingDesc::ORIGIN, "origin-2"}, |
| {0x200000000000ULL, 0x300000000000ULL, MappingDesc::SHADOW, "shadow-3"}, |
| {0x300000000000ULL, 0x400000000000ULL, MappingDesc::ORIGIN, "origin-3"}, |
| {0x400000000000ULL, 0x500000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x500000000000ULL, 0x510000000000ULL, MappingDesc::SHADOW, "shadow-1"}, |
| {0x510000000000ULL, 0x600000000000ULL, MappingDesc::APP, "app-2"}, |
| {0x600000000000ULL, 0x610000000000ULL, MappingDesc::ORIGIN, "origin-1"}, |
| {0x610000000000ULL, 0x700000000000ULL, MappingDesc::INVALID, "invalid"}, |
| {0x700000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app-3"}}; |
| #define MEM_TO_SHADOW(mem) (((uptr)(mem)) ^ 0x500000000000ULL) |
| #define SHADOW_TO_ORIGIN(mem) (((uptr)(mem)) + 0x100000000000ULL) |
| #endif // MSAN_LINUX_X86_64_OLD_MAPPING |
| |
| #else |
| #error "Unsupported platform" |
| #endif |
| |
| const uptr kMemoryLayoutSize = sizeof(kMemoryLayout) / sizeof(kMemoryLayout[0]); |
| |
| #define MEM_TO_ORIGIN(mem) (SHADOW_TO_ORIGIN(MEM_TO_SHADOW((mem)))) |
| |
| #ifndef __clang__ |
| __attribute__((optimize("unroll-loops"))) |
| #endif |
| inline bool addr_is_type(uptr addr, MappingDesc::Type mapping_type) { |
| // It is critical for performance that this loop is unrolled (because then it is |
| // simplified into just a few constant comparisons). |
| #ifdef __clang__ |
| #pragma unroll |
| #endif |
| for (unsigned i = 0; i < kMemoryLayoutSize; ++i) |
| if (kMemoryLayout[i].type == mapping_type && |
| addr >= kMemoryLayout[i].start && addr < kMemoryLayout[i].end) |
| return true; |
| return false; |
| } |
| |
| #define MEM_IS_APP(mem) addr_is_type((uptr)(mem), MappingDesc::APP) |
| #define MEM_IS_SHADOW(mem) addr_is_type((uptr)(mem), MappingDesc::SHADOW) |
| #define MEM_IS_ORIGIN(mem) addr_is_type((uptr)(mem), MappingDesc::ORIGIN) |
| |
| // These constants must be kept in sync with the ones in MemorySanitizer.cc. |
| const int kMsanParamTlsSize = 800; |
| const int kMsanRetvalTlsSize = 800; |
| |
| namespace __msan { |
| extern int msan_inited; |
| extern bool msan_init_is_running; |
| extern int msan_report_count; |
| |
| bool ProtectRange(uptr beg, uptr end); |
| bool InitShadow(bool init_origins); |
| char *GetProcSelfMaps(); |
| void InitializeInterceptors(); |
| |
| void MsanAllocatorInit(); |
| void MsanAllocatorThreadFinish(); |
| void MsanDeallocate(StackTrace *stack, void *ptr); |
| |
| void *msan_malloc(uptr size, StackTrace *stack); |
| void *msan_calloc(uptr nmemb, uptr size, StackTrace *stack); |
| void *msan_realloc(void *ptr, uptr size, StackTrace *stack); |
| void *msan_valloc(uptr size, StackTrace *stack); |
| void *msan_pvalloc(uptr size, StackTrace *stack); |
| void *msan_aligned_alloc(uptr alignment, uptr size, StackTrace *stack); |
| void *msan_memalign(uptr alignment, uptr size, StackTrace *stack); |
| int msan_posix_memalign(void **memptr, uptr alignment, uptr size, |
| StackTrace *stack); |
| |
| void InstallTrapHandler(); |
| void InstallAtExitHandler(); |
| |
| const char *GetStackOriginDescr(u32 id, uptr *pc); |
| |
| void EnterSymbolizer(); |
| void ExitSymbolizer(); |
| bool IsInSymbolizer(); |
| |
| struct SymbolizerScope { |
| SymbolizerScope() { EnterSymbolizer(); } |
| ~SymbolizerScope() { ExitSymbolizer(); } |
| }; |
| |
| void PrintWarning(uptr pc, uptr bp); |
| void PrintWarningWithOrigin(uptr pc, uptr bp, u32 origin); |
| |
| void GetStackTrace(BufferedStackTrace *stack, uptr max_s, uptr pc, uptr bp, |
| void *context, bool request_fast_unwind); |
| |
| // Unpoison first n function arguments. |
| void UnpoisonParam(uptr n); |
| void UnpoisonThreadLocalState(); |
| |
| // Returns a "chained" origin id, pointing to the given stack trace followed by |
| // the previous origin id. |
| u32 ChainOrigin(u32 id, StackTrace *stack); |
| |
| const int STACK_TRACE_TAG_POISON = StackTrace::TAG_CUSTOM + 1; |
| |
| #define GET_MALLOC_STACK_TRACE \ |
| BufferedStackTrace stack; \ |
| if (__msan_get_track_origins() && msan_inited) \ |
| GetStackTrace(&stack, common_flags()->malloc_context_size, \ |
| StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), nullptr, \ |
| common_flags()->fast_unwind_on_malloc) |
| |
| // For platforms which support slow unwinder only, we restrict the store context |
| // size to 1, basically only storing the current pc. We do this because the slow |
| // unwinder which is based on libunwind is not async signal safe and causes |
| // random freezes in forking applications as well as in signal handlers. |
| #define GET_STORE_STACK_TRACE_PC_BP(pc, bp) \ |
| BufferedStackTrace stack; \ |
| if (__msan_get_track_origins() > 1 && msan_inited) { \ |
| if (!SANITIZER_CAN_FAST_UNWIND) \ |
| GetStackTrace(&stack, Min(1, flags()->store_context_size), pc, bp, \ |
| nullptr, false); \ |
| else \ |
| GetStackTrace(&stack, flags()->store_context_size, pc, bp, nullptr, \ |
| common_flags()->fast_unwind_on_malloc); \ |
| } |
| |
| #define GET_STORE_STACK_TRACE \ |
| GET_STORE_STACK_TRACE_PC_BP(StackTrace::GetCurrentPc(), GET_CURRENT_FRAME()) |
| |
| #define GET_FATAL_STACK_TRACE_PC_BP(pc, bp) \ |
| BufferedStackTrace stack; \ |
| if (msan_inited) \ |
| GetStackTrace(&stack, kStackTraceMax, pc, bp, nullptr, \ |
| common_flags()->fast_unwind_on_fatal) |
| |
| #define GET_FATAL_STACK_TRACE_HERE \ |
| GET_FATAL_STACK_TRACE_PC_BP(StackTrace::GetCurrentPc(), GET_CURRENT_FRAME()) |
| |
| #define PRINT_CURRENT_STACK_CHECK() \ |
| { \ |
| GET_FATAL_STACK_TRACE_HERE; \ |
| stack.Print(); \ |
| } |
| |
| class ScopedThreadLocalStateBackup { |
| public: |
| ScopedThreadLocalStateBackup() { Backup(); } |
| ~ScopedThreadLocalStateBackup() { Restore(); } |
| void Backup(); |
| void Restore(); |
| private: |
| u64 va_arg_overflow_size_tls; |
| }; |
| |
| void MsanTSDInit(void (*destructor)(void *tsd)); |
| void *MsanTSDGet(); |
| void MsanTSDSet(void *tsd); |
| void MsanTSDDtor(void *tsd); |
| |
| } // namespace __msan |
| |
| #define MSAN_MALLOC_HOOK(ptr, size) \ |
| do { \ |
| if (&__sanitizer_malloc_hook) { \ |
| UnpoisonParam(2); \ |
| __sanitizer_malloc_hook(ptr, size); \ |
| } \ |
| RunMallocHooks(ptr, size); \ |
| } while (false) |
| #define MSAN_FREE_HOOK(ptr) \ |
| do { \ |
| if (&__sanitizer_free_hook) { \ |
| UnpoisonParam(1); \ |
| __sanitizer_free_hook(ptr); \ |
| } \ |
| RunFreeHooks(ptr); \ |
| } while (false) |
| |
| #endif // MSAN_H |
