lib/asan/asan_rtl.cc

91   uptr size = end - beg + 1;
92   DecreaseTotalMmap(size);  // Don't count the shadow against mmap_limit_mb.
93   void *res = MmapFixedNoReserve(beg, size, name);
96            "Perhaps you're using ulimit -v\n", size);
100     NoHugePagesInRegion(beg, size);
102     DontDumpShadowMemory(beg, size);
106 static void OnLowLevelAllocate(uptr ptr, uptr size) {
107   PoisonShadow(ptr, size, kAsanInternalHeapMagic);
112 #define ASAN_REPORT_ERROR(type, is_write, size)                     \
114 void __asan_report_ ## type ## size(uptr addr) {                    \
116   ReportGenericError(pc, bp, sp, addr, is_write, size, 0, true);    \
119 void __asan_report_exp_ ## type ## size(uptr addr, u32 exp) {       \
121   ReportGenericError(pc, bp, sp, addr, is_write, size, exp, true);  \
124 void __asan_report_ ## type ## size ## _noabort(uptr addr) {        \
126   ReportGenericError(pc, bp, sp, addr, is_write, size, 0, false);   \
142 void __asan_report_ ## type ## _n(uptr addr, uptr size) {                   \
144   ReportGenericError(pc, bp, sp, addr, is_write, size, 0, true);            \
147 void __asan_report_exp_ ## type ## _n(uptr addr, uptr size, u32 exp) {      \
149   ReportGenericError(pc, bp, sp, addr, is_write, size, exp, true);          \
152 void __asan_report_ ## type ## _n_noabort(uptr addr, uptr size) {           \
154   ReportGenericError(pc, bp, sp, addr, is_write, size, 0, false);           \
160 #define ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, exp_arg, fatal) \
162     uptr s = size <= SHADOW_GRANULARITY ? *reinterpret_cast<u8 *>(sp)          \
165       if (UNLIKELY(size >= SHADOW_GRANULARITY ||                               \
166                    ((s8)((addr & (SHADOW_GRANULARITY - 1)) + size - 1)) >=     \
172           ReportGenericError(pc, bp, sp, addr, is_write, size, exp_arg,        \
178 #define ASAN_MEMORY_ACCESS_CALLBACK(type, is_write, size)                      \
180   void __asan_##type##size(uptr addr) {                                        \
181     ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, 0, true)            \
184   void __asan_exp_##type##size(uptr addr, u32 exp) {                           \
185     ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, exp, true)          \
188   void __asan_##type##size ## _noabort(uptr addr) {                            \
189     ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, 0, false)           \
205 void __asan_loadN(uptr addr, uptr size) {
206   if (__asan_region_is_poisoned(addr, size)) {
208     ReportGenericError(pc, bp, sp, addr, false, size, 0, true);
214 void __asan_exp_loadN(uptr addr, uptr size, u32 exp) {
215   if (__asan_region_is_poisoned(addr, size)) {
217     ReportGenericError(pc, bp, sp, addr, false, size, exp, true);
223 void __asan_loadN_noabort(uptr addr, uptr size) {
224   if (__asan_region_is_poisoned(addr, size)) {
226     ReportGenericError(pc, bp, sp, addr, false, size, 0, false);
232 void __asan_storeN(uptr addr, uptr size) {
233   if (__asan_region_is_poisoned(addr, size)) {
235     ReportGenericError(pc, bp, sp, addr, true, size, 0, true);
241 void __asan_exp_storeN(uptr addr, uptr size, u32 exp) {
242   if (__asan_region_is_poisoned(addr, size)) {
244     ReportGenericError(pc, bp, sp, addr, true, size, exp, true);
250 void __asan_storeN_noabort(uptr addr, uptr size) {
251   if (__asan_region_is_poisoned(addr, size)) {
253     ReportGenericError(pc, bp, sp, addr, true, size, 0, false);
328 static void ProtectGap(uptr addr, uptr size) {
331   void *res = MmapNoAccess(addr, size, "shadow gap");
339     while (size > step && addr < kZeroBaseMaxShadowStart) {
341       size -= step;
342       void *res = MmapNoAccess(addr, size, "shadow gap");
605            "stack top: %p; bottom %p; size: %p (%zd)\n"