1//===-- asan_errors.cpp -----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of AddressSanitizer, an address sanity checker.
10//
11// ASan implementation for error structures.
12//===----------------------------------------------------------------------===//
13
14#include "asan_errors.h"
15#include "asan_descriptions.h"
16#include "asan_mapping.h"
17#include "asan_report.h"
18#include "asan_stack.h"
19#include "sanitizer_common/sanitizer_stackdepot.h"
20
21namespace __asan {
22
23static void OnStackUnwind(const SignalContext &sig,
24                          const void *callback_context,
25                          BufferedStackTrace *stack) {
26  bool fast = common_flags()->fast_unwind_on_fatal;
27#if SANITIZER_FREEBSD || SANITIZER_NETBSD
28  // On FreeBSD the slow unwinding that leverages _Unwind_Backtrace()
29  // yields the call stack of the signal's handler and not of the code
30  // that raised the signal (as it does on Linux).
31  fast = true;
32#endif
33  // Tests and maybe some users expect that scariness is going to be printed
34  // just before the stack. As only asan has scariness score we have no
35  // corresponding code in the sanitizer_common and we use this callback to
36  // print it.
37  static_cast<const ScarinessScoreBase *>(callback_context)->Print();
38  stack->Unwind(StackTrace::GetNextInstructionPc(sig.pc), sig.bp, sig.context,
39                fast);
40}
41
42void ErrorDeadlySignal::Print() {
43  ReportDeadlySignal(signal, tid, &OnStackUnwind, &scariness);
44}
45
46void ErrorDoubleFree::Print() {
47  Decorator d;
48  Printf("%s", d.Error());
49  Report(
50      "ERROR: AddressSanitizer: attempting %s on %p in thread %s:\n",
51      scariness.GetDescription(), addr_description.addr,
52      AsanThreadIdAndName(tid).c_str());
53  Printf("%s", d.Default());
54  scariness.Print();
55  GET_STACK_TRACE_FATAL(second_free_stack->trace[0],
56                        second_free_stack->top_frame_bp);
57  stack.Print();
58  addr_description.Print();
59  ReportErrorSummary(scariness.GetDescription(), &stack);
60}
61
62void ErrorNewDeleteTypeMismatch::Print() {
63  Decorator d;
64  Printf("%s", d.Error());
65  Report(
66      "ERROR: AddressSanitizer: %s on %p in thread %s:\n",
67      scariness.GetDescription(), addr_description.addr,
68      AsanThreadIdAndName(tid).c_str());
69  Printf("%s  object passed to delete has wrong type:\n", d.Default());
70  if (delete_size != 0) {
71    Printf(
72        "  size of the allocated type:   %zd bytes;\n"
73        "  size of the deallocated type: %zd bytes.\n",
74        addr_description.chunk_access.chunk_size, delete_size);
75  }
76  const uptr user_alignment =
77      addr_description.chunk_access.user_requested_alignment;
78  if (delete_alignment != user_alignment) {
79    char user_alignment_str[32];
80    char delete_alignment_str[32];
81    internal_snprintf(user_alignment_str, sizeof(user_alignment_str),
82                      "%zd bytes", user_alignment);
83    internal_snprintf(delete_alignment_str, sizeof(delete_alignment_str),
84                      "%zd bytes", delete_alignment);
85    static const char *kDefaultAlignment = "default-aligned";
86    Printf(
87        "  alignment of the allocated type:   %s;\n"
88        "  alignment of the deallocated type: %s.\n",
89        user_alignment > 0 ? user_alignment_str : kDefaultAlignment,
90        delete_alignment > 0 ? delete_alignment_str : kDefaultAlignment);
91  }
92  CHECK_GT(free_stack->size, 0);
93  scariness.Print();
94  GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
95  stack.Print();
96  addr_description.Print();
97  ReportErrorSummary(scariness.GetDescription(), &stack);
98  Report(
99      "HINT: if you don't care about these errors you may set "
100      "ASAN_OPTIONS=new_delete_type_mismatch=0\n");
101}
102
103void ErrorFreeNotMalloced::Print() {
104  Decorator d;
105  Printf("%s", d.Error());
106  Report(
107      "ERROR: AddressSanitizer: attempting free on address "
108      "which was not malloc()-ed: %p in thread %s\n",
109      addr_description.Address(), AsanThreadIdAndName(tid).c_str());
110  Printf("%s", d.Default());
111  CHECK_GT(free_stack->size, 0);
112  scariness.Print();
113  GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
114  stack.Print();
115  addr_description.Print();
116  ReportErrorSummary(scariness.GetDescription(), &stack);
117}
118
119void ErrorAllocTypeMismatch::Print() {
120  static const char *alloc_names[] = {"INVALID", "malloc", "operator new",
121                                      "operator new []"};
122  static const char *dealloc_names[] = {"INVALID", "free", "operator delete",
123                                        "operator delete []"};
124  CHECK_NE(alloc_type, dealloc_type);
125  Decorator d;
126  Printf("%s", d.Error());
127  Report("ERROR: AddressSanitizer: %s (%s vs %s) on %p\n",
128         scariness.GetDescription(), alloc_names[alloc_type],
129         dealloc_names[dealloc_type], addr_description.Address());
130  Printf("%s", d.Default());
131  CHECK_GT(dealloc_stack->size, 0);
132  scariness.Print();
133  GET_STACK_TRACE_FATAL(dealloc_stack->trace[0], dealloc_stack->top_frame_bp);
134  stack.Print();
135  addr_description.Print();
136  ReportErrorSummary(scariness.GetDescription(), &stack);
137  Report(
138      "HINT: if you don't care about these errors you may set "
139      "ASAN_OPTIONS=alloc_dealloc_mismatch=0\n");
140}
141
142void ErrorMallocUsableSizeNotOwned::Print() {
143  Decorator d;
144  Printf("%s", d.Error());
145  Report(
146      "ERROR: AddressSanitizer: attempting to call malloc_usable_size() for "
147      "pointer which is not owned: %p\n",
148      addr_description.Address());
149  Printf("%s", d.Default());
150  stack->Print();
151  addr_description.Print();
152  ReportErrorSummary(scariness.GetDescription(), stack);
153}
154
155void ErrorSanitizerGetAllocatedSizeNotOwned::Print() {
156  Decorator d;
157  Printf("%s", d.Error());
158  Report(
159      "ERROR: AddressSanitizer: attempting to call "
160      "__sanitizer_get_allocated_size() for pointer which is not owned: %p\n",
161      addr_description.Address());
162  Printf("%s", d.Default());
163  stack->Print();
164  addr_description.Print();
165  ReportErrorSummary(scariness.GetDescription(), stack);
166}
167
168void ErrorCallocOverflow::Print() {
169  Decorator d;
170  Printf("%s", d.Error());
171  Report(
172      "ERROR: AddressSanitizer: calloc parameters overflow: count * size "
173      "(%zd * %zd) cannot be represented in type size_t (thread %s)\n",
174      count, size, AsanThreadIdAndName(tid).c_str());
175  Printf("%s", d.Default());
176  stack->Print();
177  PrintHintAllocatorCannotReturnNull();
178  ReportErrorSummary(scariness.GetDescription(), stack);
179}
180
181void ErrorReallocArrayOverflow::Print() {
182  Decorator d;
183  Printf("%s", d.Error());
184  Report(
185      "ERROR: AddressSanitizer: reallocarray parameters overflow: count * size "
186      "(%zd * %zd) cannot be represented in type size_t (thread %s)\n",
187      count, size, AsanThreadIdAndName(tid).c_str());
188  Printf("%s", d.Default());
189  stack->Print();
190  PrintHintAllocatorCannotReturnNull();
191  ReportErrorSummary(scariness.GetDescription(), stack);
192}
193
194void ErrorPvallocOverflow::Print() {
195  Decorator d;
196  Printf("%s", d.Error());
197  Report(
198      "ERROR: AddressSanitizer: pvalloc parameters overflow: size 0x%zx "
199      "rounded up to system page size 0x%zx cannot be represented in type "
200      "size_t (thread %s)\n",
201      size, GetPageSizeCached(), AsanThreadIdAndName(tid).c_str());
202  Printf("%s", d.Default());
203  stack->Print();
204  PrintHintAllocatorCannotReturnNull();
205  ReportErrorSummary(scariness.GetDescription(), stack);
206}
207
208void ErrorInvalidAllocationAlignment::Print() {
209  Decorator d;
210  Printf("%s", d.Error());
211  Report(
212      "ERROR: AddressSanitizer: invalid allocation alignment: %zd, "
213      "alignment must be a power of two (thread %s)\n",
214      alignment, AsanThreadIdAndName(tid).c_str());
215  Printf("%s", d.Default());
216  stack->Print();
217  PrintHintAllocatorCannotReturnNull();
218  ReportErrorSummary(scariness.GetDescription(), stack);
219}
220
221void ErrorInvalidAlignedAllocAlignment::Print() {
222  Decorator d;
223  Printf("%s", d.Error());
224#if SANITIZER_POSIX
225  Report("ERROR: AddressSanitizer: invalid alignment requested in "
226         "aligned_alloc: %zd, alignment must be a power of two and the "
227         "requested size 0x%zx must be a multiple of alignment "
228         "(thread %s)\n", alignment, size, AsanThreadIdAndName(tid).c_str());
229#else
230  Report("ERROR: AddressSanitizer: invalid alignment requested in "
231         "aligned_alloc: %zd, the requested size 0x%zx must be a multiple of "
232         "alignment (thread %s)\n", alignment, size,
233         AsanThreadIdAndName(tid).c_str());
234#endif
235  Printf("%s", d.Default());
236  stack->Print();
237  PrintHintAllocatorCannotReturnNull();
238  ReportErrorSummary(scariness.GetDescription(), stack);
239}
240
241void ErrorInvalidPosixMemalignAlignment::Print() {
242  Decorator d;
243  Printf("%s", d.Error());
244  Report(
245      "ERROR: AddressSanitizer: invalid alignment requested in posix_memalign: "
246      "%zd, alignment must be a power of two and a multiple of sizeof(void*) "
247      "== %zd (thread %s)\n",
248      alignment, sizeof(void *), AsanThreadIdAndName(tid).c_str());
249  Printf("%s", d.Default());
250  stack->Print();
251  PrintHintAllocatorCannotReturnNull();
252  ReportErrorSummary(scariness.GetDescription(), stack);
253}
254
255void ErrorAllocationSizeTooBig::Print() {
256  Decorator d;
257  Printf("%s", d.Error());
258  Report(
259      "ERROR: AddressSanitizer: requested allocation size 0x%zx (0x%zx after "
260      "adjustments for alignment, red zones etc.) exceeds maximum supported "
261      "size of 0x%zx (thread %s)\n",
262      user_size, total_size, max_size, AsanThreadIdAndName(tid).c_str());
263  Printf("%s", d.Default());
264  stack->Print();
265  PrintHintAllocatorCannotReturnNull();
266  ReportErrorSummary(scariness.GetDescription(), stack);
267}
268
269void ErrorRssLimitExceeded::Print() {
270  Decorator d;
271  Printf("%s", d.Error());
272  Report(
273      "ERROR: AddressSanitizer: specified RSS limit exceeded, currently set to "
274      "soft_rss_limit_mb=%zd\n", common_flags()->soft_rss_limit_mb);
275  Printf("%s", d.Default());
276  stack->Print();
277  PrintHintAllocatorCannotReturnNull();
278  ReportErrorSummary(scariness.GetDescription(), stack);
279}
280
281void ErrorOutOfMemory::Print() {
282  Decorator d;
283  Printf("%s", d.Error());
284  Report(
285      "ERROR: AddressSanitizer: allocator is out of memory trying to allocate "
286      "0x%zx bytes\n", requested_size);
287  Printf("%s", d.Default());
288  stack->Print();
289  PrintHintAllocatorCannotReturnNull();
290  ReportErrorSummary(scariness.GetDescription(), stack);
291}
292
293void ErrorStringFunctionMemoryRangesOverlap::Print() {
294  Decorator d;
295  char bug_type[100];
296  internal_snprintf(bug_type, sizeof(bug_type), "%s-param-overlap", function);
297  Printf("%s", d.Error());
298  Report(
299      "ERROR: AddressSanitizer: %s: memory ranges [%p,%p) and [%p, %p) "
300      "overlap\n",
301      bug_type, addr1_description.Address(),
302      addr1_description.Address() + length1, addr2_description.Address(),
303      addr2_description.Address() + length2);
304  Printf("%s", d.Default());
305  scariness.Print();
306  stack->Print();
307  addr1_description.Print();
308  addr2_description.Print();
309  ReportErrorSummary(bug_type, stack);
310}
311
312void ErrorStringFunctionSizeOverflow::Print() {
313  Decorator d;
314  Printf("%s", d.Error());
315  Report("ERROR: AddressSanitizer: %s: (size=%zd)\n",
316         scariness.GetDescription(), size);
317  Printf("%s", d.Default());
318  scariness.Print();
319  stack->Print();
320  addr_description.Print();
321  ReportErrorSummary(scariness.GetDescription(), stack);
322}
323
324void ErrorBadParamsToAnnotateContiguousContainer::Print() {
325  Report(
326      "ERROR: AddressSanitizer: bad parameters to "
327      "__sanitizer_annotate_contiguous_container:\n"
328      "      beg     : %p\n"
329      "      end     : %p\n"
330      "      old_mid : %p\n"
331      "      new_mid : %p\n",
332      beg, end, old_mid, new_mid);
333  uptr granularity = SHADOW_GRANULARITY;
334  if (!IsAligned(beg, granularity))
335    Report("ERROR: beg is not aligned by %d\n", granularity);
336  stack->Print();
337  ReportErrorSummary(scariness.GetDescription(), stack);
338}
339
340void ErrorODRViolation::Print() {
341  Decorator d;
342  Printf("%s", d.Error());
343  Report("ERROR: AddressSanitizer: %s (%p):\n", scariness.GetDescription(),
344         global1.beg);
345  Printf("%s", d.Default());
346  InternalScopedString g1_loc(256), g2_loc(256);
347  PrintGlobalLocation(&g1_loc, global1);
348  PrintGlobalLocation(&g2_loc, global2);
349  Printf("  [1] size=%zd '%s' %s\n", global1.size,
350         MaybeDemangleGlobalName(global1.name), g1_loc.data());
351  Printf("  [2] size=%zd '%s' %s\n", global2.size,
352         MaybeDemangleGlobalName(global2.name), g2_loc.data());
353  if (stack_id1 && stack_id2) {
354    Printf("These globals were registered at these points:\n");
355    Printf("  [1]:\n");
356    StackDepotGet(stack_id1).Print();
357    Printf("  [2]:\n");
358    StackDepotGet(stack_id2).Print();
359  }
360  Report(
361      "HINT: if you don't care about these errors you may set "
362      "ASAN_OPTIONS=detect_odr_violation=0\n");
363  InternalScopedString error_msg(256);
364  error_msg.append("%s: global '%s' at %s", scariness.GetDescription(),
365                   MaybeDemangleGlobalName(global1.name), g1_loc.data());
366  ReportErrorSummary(error_msg.data());
367}
368
369void ErrorInvalidPointerPair::Print() {
370  Decorator d;
371  Printf("%s", d.Error());
372  Report("ERROR: AddressSanitizer: %s: %p %p\n", scariness.GetDescription(),
373         addr1_description.Address(), addr2_description.Address());
374  Printf("%s", d.Default());
375  GET_STACK_TRACE_FATAL(pc, bp);
376  stack.Print();
377  addr1_description.Print();
378  addr2_description.Print();
379  ReportErrorSummary(scariness.GetDescription(), &stack);
380}
381
382static bool AdjacentShadowValuesAreFullyPoisoned(u8 *s) {
383  return s[-1] > 127 && s[1] > 127;
384}
385
386ErrorGeneric::ErrorGeneric(u32 tid, uptr pc_, uptr bp_, uptr sp_, uptr addr,
387                           bool is_write_, uptr access_size_)
388    : ErrorBase(tid),
389      addr_description(addr, access_size_, /*shouldLockThreadRegistry=*/false),
390      pc(pc_),
391      bp(bp_),
392      sp(sp_),
393      access_size(access_size_),
394      is_write(is_write_),
395      shadow_val(0) {
396  scariness.Clear();
397  if (access_size) {
398    if (access_size <= 9) {
399      char desr[] = "?-byte";
400      desr[0] = '0' + access_size;
401      scariness.Scare(access_size + access_size / 2, desr);
402    } else if (access_size >= 10) {
403      scariness.Scare(15, "multi-byte");
404    }
405    is_write ? scariness.Scare(20, "write") : scariness.Scare(1, "read");
406
407    // Determine the error type.
408    bug_descr = "unknown-crash";
409    if (AddrIsInMem(addr)) {
410      u8 *shadow_addr = (u8 *)MemToShadow(addr);
411      // If we are accessing 16 bytes, look at the second shadow byte.
412      if (*shadow_addr == 0 && access_size > SHADOW_GRANULARITY) shadow_addr++;
413      // If we are in the partial right redzone, look at the next shadow byte.
414      if (*shadow_addr > 0 && *shadow_addr < 128) shadow_addr++;
415      bool far_from_bounds = false;
416      shadow_val = *shadow_addr;
417      int bug_type_score = 0;
418      // For use-after-frees reads are almost as bad as writes.
419      int read_after_free_bonus = 0;
420      switch (shadow_val) {
421        case kAsanHeapLeftRedzoneMagic:
422        case kAsanArrayCookieMagic:
423          bug_descr = "heap-buffer-overflow";
424          bug_type_score = 10;
425          far_from_bounds = AdjacentShadowValuesAreFullyPoisoned(shadow_addr);
426          break;
427        case kAsanHeapFreeMagic:
428          bug_descr = "heap-use-after-free";
429          bug_type_score = 20;
430          if (!is_write) read_after_free_bonus = 18;
431          break;
432        case kAsanStackLeftRedzoneMagic:
433          bug_descr = "stack-buffer-underflow";
434          bug_type_score = 25;
435          far_from_bounds = AdjacentShadowValuesAreFullyPoisoned(shadow_addr);
436          break;
437        case kAsanInitializationOrderMagic:
438          bug_descr = "initialization-order-fiasco";
439          bug_type_score = 1;
440          break;
441        case kAsanStackMidRedzoneMagic:
442        case kAsanStackRightRedzoneMagic:
443          bug_descr = "stack-buffer-overflow";
444          bug_type_score = 25;
445          far_from_bounds = AdjacentShadowValuesAreFullyPoisoned(shadow_addr);
446          break;
447        case kAsanStackAfterReturnMagic:
448          bug_descr = "stack-use-after-return";
449          bug_type_score = 30;
450          if (!is_write) read_after_free_bonus = 18;
451          break;
452        case kAsanUserPoisonedMemoryMagic:
453          bug_descr = "use-after-poison";
454          bug_type_score = 20;
455          break;
456        case kAsanContiguousContainerOOBMagic:
457          bug_descr = "container-overflow";
458          bug_type_score = 10;
459          break;
460        case kAsanStackUseAfterScopeMagic:
461          bug_descr = "stack-use-after-scope";
462          bug_type_score = 10;
463          break;
464        case kAsanGlobalRedzoneMagic:
465          bug_descr = "global-buffer-overflow";
466          bug_type_score = 10;
467          far_from_bounds = AdjacentShadowValuesAreFullyPoisoned(shadow_addr);
468          break;
469        case kAsanIntraObjectRedzone:
470          bug_descr = "intra-object-overflow";
471          bug_type_score = 10;
472          break;
473        case kAsanAllocaLeftMagic:
474        case kAsanAllocaRightMagic:
475          bug_descr = "dynamic-stack-buffer-overflow";
476          bug_type_score = 25;
477          far_from_bounds = AdjacentShadowValuesAreFullyPoisoned(shadow_addr);
478          break;
479      }
480      scariness.Scare(bug_type_score + read_after_free_bonus, bug_descr);
481      if (far_from_bounds) scariness.Scare(10, "far-from-bounds");
482    }
483  }
484}
485
486static void PrintContainerOverflowHint() {
487  Printf("HINT: if you don't care about these errors you may set "
488         "ASAN_OPTIONS=detect_container_overflow=0.\n"
489         "If you suspect a false positive see also: "
490         "https://github.com/google/sanitizers/wiki/"
491         "AddressSanitizerContainerOverflow.\n");
492}
493
494static void PrintShadowByte(InternalScopedString *str, const char *before,
495    u8 byte, const char *after = "\n") {
496  PrintMemoryByte(str, before, byte, /*in_shadow*/true, after);
497}
498
499static void PrintLegend(InternalScopedString *str) {
500  str->append(
501      "Shadow byte legend (one shadow byte represents %d "
502      "application bytes):\n",
503      (int)SHADOW_GRANULARITY);
504  PrintShadowByte(str, "  Addressable:           ", 0);
505  str->append("  Partially addressable: ");
506  for (u8 i = 1; i < SHADOW_GRANULARITY; i++) PrintShadowByte(str, "", i, " ");
507  str->append("\n");
508  PrintShadowByte(str, "  Heap left redzone:       ",
509                  kAsanHeapLeftRedzoneMagic);
510  PrintShadowByte(str, "  Freed heap region:       ", kAsanHeapFreeMagic);
511  PrintShadowByte(str, "  Stack left redzone:      ",
512                  kAsanStackLeftRedzoneMagic);
513  PrintShadowByte(str, "  Stack mid redzone:       ",
514                  kAsanStackMidRedzoneMagic);
515  PrintShadowByte(str, "  Stack right redzone:     ",
516                  kAsanStackRightRedzoneMagic);
517  PrintShadowByte(str, "  Stack after return:      ",
518                  kAsanStackAfterReturnMagic);
519  PrintShadowByte(str, "  Stack use after scope:   ",
520                  kAsanStackUseAfterScopeMagic);
521  PrintShadowByte(str, "  Global redzone:          ", kAsanGlobalRedzoneMagic);
522  PrintShadowByte(str, "  Global init order:       ",
523                  kAsanInitializationOrderMagic);
524  PrintShadowByte(str, "  Poisoned by user:        ",
525                  kAsanUserPoisonedMemoryMagic);
526  PrintShadowByte(str, "  Container overflow:      ",
527                  kAsanContiguousContainerOOBMagic);
528  PrintShadowByte(str, "  Array cookie:            ",
529                  kAsanArrayCookieMagic);
530  PrintShadowByte(str, "  Intra object redzone:    ",
531                  kAsanIntraObjectRedzone);
532  PrintShadowByte(str, "  ASan internal:           ", kAsanInternalHeapMagic);
533  PrintShadowByte(str, "  Left alloca redzone:     ", kAsanAllocaLeftMagic);
534  PrintShadowByte(str, "  Right alloca redzone:    ", kAsanAllocaRightMagic);
535  PrintShadowByte(str, "  Shadow gap:              ", kAsanShadowGap);
536}
537
538static void PrintShadowBytes(InternalScopedString *str, const char *before,
539                             u8 *bytes, u8 *guilty, uptr n) {
540  Decorator d;
541  if (before) str->append("%s%p:", before, bytes);
542  for (uptr i = 0; i < n; i++) {
543    u8 *p = bytes + i;
544    const char *before =
545        p == guilty ? "[" : (p - 1 == guilty && i != 0) ? "" : " ";
546    const char *after = p == guilty ? "]" : "";
547    PrintShadowByte(str, before, *p, after);
548  }
549  str->append("\n");
550}
551
552static void PrintShadowMemoryForAddress(uptr addr) {
553  if (!AddrIsInMem(addr)) return;
554  uptr shadow_addr = MemToShadow(addr);
555  const uptr n_bytes_per_row = 16;
556  uptr aligned_shadow = shadow_addr & ~(n_bytes_per_row - 1);
557  InternalScopedString str(4096 * 8);
558  str.append("Shadow bytes around the buggy address:\n");
559  for (int i = -5; i <= 5; i++) {
560    uptr row_shadow_addr = aligned_shadow + i * n_bytes_per_row;
561    // Skip rows that would be outside the shadow range. This can happen when
562    // the user address is near the bottom, top, or shadow gap of the address
563    // space.
564    if (!AddrIsInShadow(row_shadow_addr)) continue;
565    const char *prefix = (i == 0) ? "=>" : "  ";
566    PrintShadowBytes(&str, prefix, (u8 *)row_shadow_addr, (u8 *)shadow_addr,
567                     n_bytes_per_row);
568  }
569  if (flags()->print_legend) PrintLegend(&str);
570  Printf("%s", str.data());
571}
572
573void ErrorGeneric::Print() {
574  Decorator d;
575  Printf("%s", d.Error());
576  uptr addr = addr_description.Address();
577  Report("ERROR: AddressSanitizer: %s on address %p at pc %p bp %p sp %p\n",
578         bug_descr, (void *)addr, pc, bp, sp);
579  Printf("%s", d.Default());
580
581  Printf("%s%s of size %zu at %p thread %s%s\n", d.Access(),
582         access_size ? (is_write ? "WRITE" : "READ") : "ACCESS", access_size,
583         (void *)addr, AsanThreadIdAndName(tid).c_str(), d.Default());
584
585  scariness.Print();
586  GET_STACK_TRACE_FATAL(pc, bp);
587  stack.Print();
588
589  // Pass bug_descr because we have a special case for
590  // initialization-order-fiasco
591  addr_description.Print(bug_descr);
592  if (shadow_val == kAsanContiguousContainerOOBMagic)
593    PrintContainerOverflowHint();
594  ReportErrorSummary(bug_descr, &stack);
595  PrintShadowMemoryForAddress(addr);
596}
597
598}  // namespace __asan
599