asan_globals.cc revision 53177247698bfba075f2d5b255a447fc3ced6976
1e5f5895bda30f374b0b51412fd4d837fa59aed66Alexey Samsonov//===-- asan_globals.cc ---------------------------------------------------===// 21e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// 31e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// The LLVM Compiler Infrastructure 41e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// 51e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// This file is distributed under the University of Illinois Open Source 61e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// License. See LICENSE.TXT for details. 71e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// 81e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany//===----------------------------------------------------------------------===// 91e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// 101e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// This file is a part of AddressSanitizer, an address sanity checker. 111e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// 121e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// Handle globals. 131e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany//===----------------------------------------------------------------------===// 141e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_interceptors.h" 151e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_internal.h" 161e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_mapping.h" 177e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov#include "asan_poisoning.h" 18e4bfca2b154a6ab4eda921aff454035f33f3551aAlexey Samsonov#include "asan_report.h" 191e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_stack.h" 201e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_stats.h" 211e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany#include "asan_thread.h" 227e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov#include "sanitizer_common/sanitizer_common.h" 23f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov#include "sanitizer_common/sanitizer_mutex.h" 247e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov#include "sanitizer_common/sanitizer_placement_new.h" 251e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 261e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryanynamespace __asan { 271e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 281e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryanytypedef __asan_global Global; 291e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 30b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryanystruct ListOfGlobals { 31b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany const Global *g; 32b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany ListOfGlobals *next; 33b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany}; 34b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany 35f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukovstatic BlockingMutex mu_for_globals(LINKER_INITIALIZED); 36947fbd1a073fcd38988c1ec131452e99bb0313f8Alexey Samsonovstatic LowLevelAllocator allocator_for_globals; 373945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryanystatic ListOfGlobals *list_of_all_globals; 381e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 397e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonovstatic const int kDynamicInitGlobalsInitialCapacity = 512; 40dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonovstruct DynInitGlobal { 41dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov Global g; 42dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov bool initialized; 43dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov}; 44a64d4359902f1f64992aedfe10d8882ae7c66f40Alexey Samsonovtypedef InternalMmapVector<DynInitGlobal> VectorOfGlobals; 457e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov// Lazy-initialized and never deleted. 467e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonovstatic VectorOfGlobals *dynamic_init_globals; 477e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov 48abfdbdf5bc7e9d202652fe061acd20c14a4d22f4Timur IskhodzhanovALWAYS_INLINE void PoisonShadowForGlobal(const Global *g, u8 value) { 497e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov FastPoisonShadow(g->beg, g->size_with_redzone, value); 507e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov} 517e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov 52abfdbdf5bc7e9d202652fe061acd20c14a4d22f4Timur IskhodzhanovALWAYS_INLINE void PoisonRedZones(const Global &g) { 53a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany uptr aligned_size = RoundUpTo(g.size, SHADOW_GRANULARITY); 547e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov FastPoisonShadow(g.beg + aligned_size, g.size_with_redzone - aligned_size, 557e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov kAsanGlobalRedzoneMagic); 56a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany if (g.size != aligned_size) { 577e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov FastPoisonShadowPartialRightRedzone( 58a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany g.beg + RoundDownTo(g.size, SHADOW_GRANULARITY), 59a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany g.size % SHADOW_GRANULARITY, 60a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany SHADOW_GRANULARITY, 61a3b0e5e4f9f48b2ed0baee10c0236eda7c21c660Kostya Serebryany kAsanGlobalRedzoneMagic); 621e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany } 631e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany} 641e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 6505e16a028d26503153a8fe512a500676cad66031Alexey Samsonovstatic void ReportGlobal(const Global &g, const char *prefix) { 6605e16a028d26503153a8fe512a500676cad66031Alexey Samsonov Report("%s Global: beg=%p size=%zu/%zu name=%s module=%s dyn_init=%zu\n", 6705e16a028d26503153a8fe512a500676cad66031Alexey Samsonov prefix, (void*)g.beg, g.size, g.size_with_redzone, g.name, 6805e16a028d26503153a8fe512a500676cad66031Alexey Samsonov g.module_name, g.has_dynamic_init); 6905e16a028d26503153a8fe512a500676cad66031Alexey Samsonov} 7005e16a028d26503153a8fe512a500676cad66031Alexey Samsonov 71589dcdaa520de1033a0f6112c9b67ab9eb7931afEvgeniy Stepanovbool DescribeAddressIfGlobal(uptr addr, uptr size) { 72cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov if (!flags()->report_globals) return false; 73f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov BlockingMutexLock lock(&mu_for_globals); 741e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany bool res = false; 753945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany for (ListOfGlobals *l = list_of_all_globals; l; l = l->next) { 76b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany const Global &g = *l->g; 77cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov if (flags()->report_globals >= 2) 7805e16a028d26503153a8fe512a500676cad66031Alexey Samsonov ReportGlobal(g, "Search"); 79589dcdaa520de1033a0f6112c9b67ab9eb7931afEvgeniy Stepanov res |= DescribeAddressRelativeToGlobal(addr, size, g); 801e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany } 811e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany return res; 821e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany} 831e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 841e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// Register a global variable. 851e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// This function may be called more than once for every global 861e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// so we store the globals in a map. 871e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryanystatic void RegisterGlobal(const Global *g) { 881e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany CHECK(asan_inited); 893945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany if (flags()->report_globals >= 2) 9005e16a028d26503153a8fe512a500676cad66031Alexey Samsonov ReportGlobal(*g, "Added"); 91cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov CHECK(flags()->report_globals); 921e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany CHECK(AddrIsInMem(g->beg)); 93b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany CHECK(AddrIsAlignedByGranularity(g->beg)); 94c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany CHECK(AddrIsAlignedByGranularity(g->size_with_redzone)); 957e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (flags()->poison_heap) 967e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov PoisonRedZones(*g); 9753177247698bfba075f2d5b255a447fc3ced6976Peter Collingbourne ListOfGlobals *l = new(allocator_for_globals) ListOfGlobals; 98b89567ce41bef82cf92a9c741c78b632c07b2781Kostya Serebryany l->g = g; 993945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany l->next = list_of_all_globals; 1003945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany list_of_all_globals = l; 1013945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany if (g->has_dynamic_init) { 1027e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (dynamic_init_globals == 0) { 10353177247698bfba075f2d5b255a447fc3ced6976Peter Collingbourne dynamic_init_globals = new(allocator_for_globals) 1047e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov VectorOfGlobals(kDynamicInitGlobalsInitialCapacity); 1057e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov } 106dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov DynInitGlobal dyn_global = { *g, false }; 107dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov dynamic_init_globals->push_back(dyn_global); 1083945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany } 1091e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany} 1101e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 111c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryanystatic void UnregisterGlobal(const Global *g) { 112c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany CHECK(asan_inited); 113cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov CHECK(flags()->report_globals); 114c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany CHECK(AddrIsInMem(g->beg)); 115c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany CHECK(AddrIsAlignedByGranularity(g->beg)); 116c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany CHECK(AddrIsAlignedByGranularity(g->size_with_redzone)); 1177e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (flags()->poison_heap) 1187e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov PoisonShadowForGlobal(g, 0); 119c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany // We unpoison the shadow memory for the global but we do not remove it from 120c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany // the list because that would require O(n^2) time with the current list 121c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany // implementation. It might not be worth doing anyway. 122c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany} 123c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany 12446efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonovvoid StopInitOrderChecking() { 12546efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov BlockingMutexLock lock(&mu_for_globals); 12646efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov if (!flags()->check_initialization_order || !dynamic_init_globals) 12746efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov return; 12846efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov flags()->check_initialization_order = false; 12946efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov for (uptr i = 0, n = dynamic_init_globals->size(); i < n; ++i) { 13046efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov DynInitGlobal &dyn_g = (*dynamic_init_globals)[i]; 13146efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov const Global *g = &dyn_g.g; 13246efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov // Unpoison the whole global. 13346efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov PoisonShadowForGlobal(g, 0); 13446efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov // Poison redzones back. 13546efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov PoisonRedZones(*g); 13646efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov } 13746efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov} 13846efcb09dc16b91cb805abea52f3ff6081a63751Alexey Samsonov 1391e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany} // namespace __asan 1401e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 1411e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// ---------------------- Interface ---------------- {{{1 1421e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryanyusing namespace __asan; // NOLINT 1431e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany 1441e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany// Register an array of globals. 1459aead37421a6e4bf43265e5195c6ac31fc519982Kostya Serebryanyvoid __asan_register_globals(__asan_global *globals, uptr n) { 146cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov if (!flags()->report_globals) return; 147f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov BlockingMutexLock lock(&mu_for_globals); 1489aead37421a6e4bf43265e5195c6ac31fc519982Kostya Serebryany for (uptr i = 0; i < n; i++) { 1491e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany RegisterGlobal(&globals[i]); 1501e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany } 1511e172b4bdec57329bf904f063a29f99cddf2d85fKostya Serebryany} 152c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany 153c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany// Unregister an array of globals. 1543945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// We must do this when a shared objects gets dlclosed. 1559aead37421a6e4bf43265e5195c6ac31fc519982Kostya Serebryanyvoid __asan_unregister_globals(__asan_global *globals, uptr n) { 156cb8c4dce691097718d5af41b36899b72ef4b1d84Alexey Samsonov if (!flags()->report_globals) return; 157f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov BlockingMutexLock lock(&mu_for_globals); 1589aead37421a6e4bf43265e5195c6ac31fc519982Kostya Serebryany for (uptr i = 0; i < n; i++) { 159c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany UnregisterGlobal(&globals[i]); 160c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany } 161c491061eddb0bb7047470b2746cbcbfe7730b2a9Kostya Serebryany} 1623945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany 1633945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// This method runs immediately prior to dynamic initialization in each TU, 1643945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// when all dynamically initialized globals are unpoisoned. This method 1653945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// poisons all global variables not defined in this TU, so that a dynamic 1663945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// initializer can only touch global variables in the same TU. 16705e16a028d26503153a8fe512a500676cad66031Alexey Samsonovvoid __asan_before_dynamic_init(const char *module_name) { 1687e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (!flags()->check_initialization_order || 1697e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov !flags()->poison_heap) 1707e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov return; 171dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov bool strict_init_order = flags()->strict_init_order; 1727e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov CHECK(dynamic_init_globals); 17305e16a028d26503153a8fe512a500676cad66031Alexey Samsonov CHECK(module_name); 1747e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov CHECK(asan_inited); 175f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov BlockingMutexLock lock(&mu_for_globals); 1767e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (flags()->report_globals >= 3) 1777e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov Printf("DynInitPoison module: %s\n", module_name); 1787e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov for (uptr i = 0, n = dynamic_init_globals->size(); i < n; ++i) { 179dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov DynInitGlobal &dyn_g = (*dynamic_init_globals)[i]; 180dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov const Global *g = &dyn_g.g; 181dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov if (dyn_g.initialized) 182dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov continue; 1837e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (g->module_name != module_name) 1847e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov PoisonShadowForGlobal(g, kAsanInitializationOrderMagic); 185dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov else if (!strict_init_order) 186dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov dyn_g.initialized = true; 1873945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany } 1883945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany} 1893945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany 1903945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// This method runs immediately after dynamic initialization in each TU, when 1913945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// all dynamically initialized globals except for those defined in the current 1923945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany// TU are poisoned. It simply unpoisons all dynamically initialized globals. 1933945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryanyvoid __asan_after_dynamic_init() { 1947e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov if (!flags()->check_initialization_order || 1957e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov !flags()->poison_heap) 1967e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov return; 1977e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov CHECK(asan_inited); 198f4f51f2cc6fa936f0c65577f82e6b62989d546eeDmitry Vyukov BlockingMutexLock lock(&mu_for_globals); 1997e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov // FIXME: Optionally report that we're unpoisoning globals from a module. 2007e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov for (uptr i = 0, n = dynamic_init_globals->size(); i < n; ++i) { 201dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov DynInitGlobal &dyn_g = (*dynamic_init_globals)[i]; 202dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov const Global *g = &dyn_g.g; 203dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov if (!dyn_g.initialized) { 204dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov // Unpoison the whole global. 205dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov PoisonShadowForGlobal(g, 0); 206dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov // Poison redzones back. 207dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov PoisonRedZones(*g); 208dfeef67b23ba92bbee598293164ee20078f633a1Alexey Samsonov } 2097e8434940a1fe7dce531d4c458ccd714da48f609Alexey Samsonov } 2103945c58f9db42671b1a3b865fde5008f09a3a40eKostya Serebryany} 211