Revert r259961, r259978, r259981.
The "sanitizer-windows" buildbot has been failing for two days because of this:
FAILED: cl.exe asan_report.cc
asan_scariness_score.h(60) : error C2536:
'__asan::ScarinessScore::__asan::ScarinessScore::descr' :
cannot specify explicit initializer for arrays
asan_scariness_score.h(60) : see declaration of '__asan::ScarinessScore::descr'
llvm-svn: 260059
This commit is contained in:
Nico Weber
parent
fe7c13343c
commit
d64186f5da
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@ -77,8 +77,6 @@ ASAN_FLAG(bool, print_stats, false,
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"Print various statistics after printing an error message or if "
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"atexit=1.")
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ASAN_FLAG(bool, print_legend, true, "Print the legend for the shadow bytes.")
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ASAN_FLAG(bool, print_scariness, false,
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"Print the scariness score. Experimental.")
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ASAN_FLAG(bool, atexit, false,
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"If set, prints ASan exit stats even after program terminates "
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"successfully.")
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@ -16,7 +16,6 @@
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#include "asan_internal.h"
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#include "asan_mapping.h"
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#include "asan_report.h"
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#include "asan_scariness_score.h"
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#include "asan_stack.h"
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#include "asan_thread.h"
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#include "sanitizer_common/sanitizer_common.h"
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@ -748,7 +747,6 @@ void ReportStackOverflow(const SignalContext &sig) {
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(void *)sig.addr, (void *)sig.pc, (void *)sig.bp, (void *)sig.sp,
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GetCurrentTidOrInvalid());
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Printf("%s", d.EndWarning());
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ScarinessScore::PrintSimple(15, "stack-overflow");
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GET_STACK_TRACE_SIGNAL(sig);
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stack.Print();
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ReportErrorSummary("stack-overflow", &stack);
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@ -764,26 +762,14 @@ void ReportDeadlySignal(const char *description, const SignalContext &sig) {
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description, (void *)sig.addr, (void *)sig.pc, (void *)sig.bp,
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(void *)sig.sp, GetCurrentTidOrInvalid());
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Printf("%s", d.EndWarning());
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ScarinessScore SS;
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if (sig.pc < GetPageSizeCached())
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Report("Hint: pc points to the zero page.\n");
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if (sig.is_memory_access) {
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Report("The signal is caused by a %s memory access.\n",
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sig.is_write ? "WRITE" : "READ");
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if (sig.addr < GetPageSizeCached()) {
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if (sig.addr < GetPageSizeCached())
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Report("Hint: address points to the zero page.\n");
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SS.Scare(10, "null-deref");
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} else if (sig.addr == sig.pc) {
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SS.Scare(60, "wild-jump");
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} else if (sig.is_write) {
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SS.Scare(30, "wild-addr-write");
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} else {
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SS.Scare(20, "wild-addr-read");
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}
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} else {
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SS.Scare(10, "signal");
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}
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SS.Print();
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GET_STACK_TRACE_SIGNAL(sig);
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stack.Print();
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MaybeDumpInstructionBytes(sig.pc);
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@ -803,7 +789,6 @@ void ReportDoubleFree(uptr addr, BufferedStackTrace *free_stack) {
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ThreadNameWithParenthesis(curr_tid, tname, sizeof(tname)));
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Printf("%s", d.EndWarning());
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CHECK_GT(free_stack->size, 0);
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ScarinessScore::PrintSimple(42, "double-free");
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GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
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stack.Print();
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DescribeHeapAddress(addr, 1);
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@ -826,7 +811,6 @@ void ReportNewDeleteSizeMismatch(uptr addr, uptr delete_size,
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" size of the deallocated type: %zd bytes.\n",
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asan_mz_size(reinterpret_cast<void*>(addr)), delete_size);
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CHECK_GT(free_stack->size, 0);
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ScarinessScore::PrintSimple(10, "new-delete-type-mismatch");
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GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
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stack.Print();
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DescribeHeapAddress(addr, 1);
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@ -846,7 +830,6 @@ void ReportFreeNotMalloced(uptr addr, BufferedStackTrace *free_stack) {
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curr_tid, ThreadNameWithParenthesis(curr_tid, tname, sizeof(tname)));
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Printf("%s", d.EndWarning());
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CHECK_GT(free_stack->size, 0);
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ScarinessScore::PrintSimple(10, "bad-free");
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GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
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stack.Print();
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DescribeHeapAddress(addr, 1);
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@ -868,7 +851,6 @@ void ReportAllocTypeMismatch(uptr addr, BufferedStackTrace *free_stack,
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alloc_names[alloc_type], dealloc_names[dealloc_type], addr);
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Printf("%s", d.EndWarning());
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CHECK_GT(free_stack->size, 0);
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ScarinessScore::PrintSimple(10, "alloc-dealloc-mismatch");
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GET_STACK_TRACE_FATAL(free_stack->trace[0], free_stack->top_frame_bp);
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stack.Print();
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DescribeHeapAddress(addr, 1);
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@ -917,7 +899,6 @@ void ReportStringFunctionMemoryRangesOverlap(const char *function,
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"memory ranges [%p,%p) and [%p, %p) overlap\n", \
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bug_type, offset1, offset1 + length1, offset2, offset2 + length2);
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Printf("%s", d.EndWarning());
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ScarinessScore::PrintSimple(10, bug_type);
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stack->Print();
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DescribeAddress((uptr)offset1, length1, bug_type);
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DescribeAddress((uptr)offset2, length2, bug_type);
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@ -932,7 +913,6 @@ void ReportStringFunctionSizeOverflow(uptr offset, uptr size,
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Printf("%s", d.Warning());
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Report("ERROR: AddressSanitizer: %s: (size=%zd)\n", bug_type, size);
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Printf("%s", d.EndWarning());
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ScarinessScore::PrintSimple(10, bug_type);
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stack->Print();
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DescribeAddress(offset, size, bug_type);
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ReportErrorSummary(bug_type, stack);
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@ -1053,18 +1033,6 @@ void ReportGenericError(uptr pc, uptr bp, uptr sp, uptr addr, bool is_write,
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uptr access_size, u32 exp, bool fatal) {
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if (!fatal && SuppressErrorReport(pc)) return;
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ENABLE_FRAME_POINTER;
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ScarinessScore SS;
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if (access_size) {
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if (access_size <= 9) {
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char desr[] = "?-byte";
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desr[0] = '0' + access_size;
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SS.Scare(access_size + access_size / 2, desr);
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} else if (access_size >= 10) {
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SS.Scare(15, "multi-byte");
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}
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is_write ? SS.Scare(20, "write") : SS.Scare(1, "read");
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}
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// Optimization experiments.
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// The experiments can be used to evaluate potential optimizations that remove
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@ -1086,72 +1054,50 @@ void ReportGenericError(uptr pc, uptr bp, uptr sp, uptr addr, bool is_write,
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// If we are in the partial right redzone, look at the next shadow byte.
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if (*shadow_addr > 0 && *shadow_addr < 128)
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shadow_addr++;
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bool far_from_bounds = false;
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shadow_val = *shadow_addr;
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int bug_type_score = 0;
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switch (shadow_val) {
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case kAsanHeapLeftRedzoneMagic:
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case kAsanHeapRightRedzoneMagic:
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case kAsanArrayCookieMagic:
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bug_descr = "heap-buffer-overflow";
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bug_type_score = 10;
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far_from_bounds = shadow_addr[-1] > 127 && shadow_addr[1] > 127;
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break;
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case kAsanHeapFreeMagic:
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bug_descr = "heap-use-after-free";
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bug_type_score = 20;
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break;
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case kAsanStackLeftRedzoneMagic:
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bug_descr = "stack-buffer-underflow";
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bug_type_score = 25;
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far_from_bounds = shadow_addr[-1] > 127 && shadow_addr[1] > 127;
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break;
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case kAsanInitializationOrderMagic:
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bug_descr = "initialization-order-fiasco";
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bug_type_score = 1;
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break;
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case kAsanStackMidRedzoneMagic:
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case kAsanStackRightRedzoneMagic:
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case kAsanStackPartialRedzoneMagic:
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bug_descr = "stack-buffer-overflow";
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bug_type_score = 25;
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far_from_bounds = shadow_addr[-1] > 127 && shadow_addr[1] > 127;
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break;
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case kAsanStackAfterReturnMagic:
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bug_descr = "stack-use-after-return";
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bug_type_score = 30;
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break;
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case kAsanUserPoisonedMemoryMagic:
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bug_descr = "use-after-poison";
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bug_type_score = 10;
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break;
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case kAsanContiguousContainerOOBMagic:
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bug_descr = "container-overflow";
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bug_type_score = 10;
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break;
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case kAsanStackUseAfterScopeMagic:
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bug_descr = "stack-use-after-scope";
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bug_type_score = 10;
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break;
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case kAsanGlobalRedzoneMagic:
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bug_descr = "global-buffer-overflow";
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bug_type_score = 10;
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far_from_bounds = shadow_addr[-1] > 127 && shadow_addr[1] > 127;
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break;
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case kAsanIntraObjectRedzone:
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bug_descr = "intra-object-overflow";
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bug_type_score = 10;
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break;
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case kAsanAllocaLeftMagic:
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case kAsanAllocaRightMagic:
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bug_descr = "dynamic-stack-buffer-overflow";
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bug_type_score = 25;
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far_from_bounds = shadow_addr[-1] > 127 && shadow_addr[1] > 127;
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break;
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}
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SS.Scare(bug_type_score, bug_descr);
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if (far_from_bounds)
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SS.Scare(10, "far-from-bounds");
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}
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ReportData report = { pc, sp, bp, addr, (bool)is_write, access_size,
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@ -1174,7 +1120,6 @@ void ReportGenericError(uptr pc, uptr bp, uptr sp, uptr addr, bool is_write,
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ThreadNameWithParenthesis(curr_tid, tname, sizeof(tname)),
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d.EndAccess());
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SS.Print();
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GET_STACK_TRACE_FATAL(pc, bp);
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stack.Print();
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@ -1,65 +0,0 @@
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//===-- asan_scariness_score.h ----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// Compute the level of scariness of the error message.
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// Don't expect any deep science here, just a set of heuristics that suggest
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// that e.g. 1-byte-read-global-buffer-overflow is less scary than
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// 8-byte-write-stack-use-after-return.
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//
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// Every error report has one or more features, such as memory access size,
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// type (read or write), type of accessed memory (e.g. free-d heap, or a global
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// redzone), etc. Every such feature has an int score and a string description.
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// The overall score is the sum of all feature scores and the description
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// is a concatenation of feature descriptions.
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// Examples:
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// 17 (4-byte-read-heap-buffer-overflow)
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// 65 (multi-byte-write-stack-use-after-return)
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// 10 (null-deref)
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//
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_SCARINESS_SCORE_H
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#define ASAN_SCARINESS_SCORE_H
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#include "asan_flags.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_libc.h"
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namespace __asan {
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class ScarinessScore {
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public:
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ScarinessScore() {}
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void Scare(int add_to_score, const char *reason) {
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if (descr[0])
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internal_strlcat(descr, "-", sizeof(descr));
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internal_strlcat(descr, reason, sizeof(descr));
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score += add_to_score;
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};
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int GetScore() const { return score; }
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const char *GetDescription() const { return descr; }
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void Print() {
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if (score && flags()->print_scariness)
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Printf("SCARINESS: %d (%s)\n", score, descr);
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}
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static void PrintSimple(int score, const char *descr) {
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ScarinessScore SS;
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SS.Scare(score, descr);
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SS.Print();
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}
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private:
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int score = 0;
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char descr[1024] = {0};
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};
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} // namespace __asan
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#endif // ASAN_SCARINESS_SCORE_H
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@ -1,178 +0,0 @@
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// Test how we produce the scariness score.
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// RUN: %clangxx_asan -O0 %s -o %t
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// RUN: export %env_asan_opts=detect_stack_use_after_return=1:handle_abort=1:print_scariness=1
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// RUN: not %run %t 1 2>&1 | FileCheck %s --check-prefix=CHECK1
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// RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK2
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// RUN: not %run %t 3 2>&1 | FileCheck %s --check-prefix=CHECK3
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// RUN: not %run %t 4 2>&1 | FileCheck %s --check-prefix=CHECK4
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// RUN: not %run %t 5 2>&1 | FileCheck %s --check-prefix=CHECK5
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// RUN: not %run %t 6 2>&1 | FileCheck %s --check-prefix=CHECK6
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// RUN: not %run %t 7 2>&1 | FileCheck %s --check-prefix=CHECK7
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// RUN: not %run %t 8 2>&1 | FileCheck %s --check-prefix=CHECK8
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// RUN: not %run %t 9 2>&1 | FileCheck %s --check-prefix=CHECK9
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// RUN: not %run %t 10 2>&1 | FileCheck %s --check-prefix=CHECK10
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// RUN: not %run %t 11 2>&1 | FileCheck %s --check-prefix=CHECK11
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// RUN: not %run %t 12 2>&1 | FileCheck %s --check-prefix=CHECK12
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// RUN: not %run %t 13 2>&1 | FileCheck %s --check-prefix=CHECK13
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// RUN: not %run %t 14 2>&1 | FileCheck %s --check-prefix=CHECK14
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// RUN: not %run %t 15 2>&1 | FileCheck %s --check-prefix=CHECK15
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// RUN: not %run %t 16 2>&1 | FileCheck %s --check-prefix=CHECK16
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// RUN: not %run %t 17 2>&1 | FileCheck %s --check-prefix=CHECK17
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// Stack overflow may not trigger under GNU make.
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// DISABLED: not %run %t 18 2>&1 | FileCheck %s --check-prefix=CHECK18
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// RUN: not %run %t 19 2>&1 | FileCheck %s --check-prefix=CHECK19
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// RUN: not %run %t 20 2>&1 | FileCheck %s --check-prefix=CHECK20
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// RUN: not %run %t 21 2>&1 | FileCheck %s --check-prefix=CHECK21
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// RUN: not %run %t 22 2>&1 | FileCheck %s --check-prefix=CHECK22
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// RUN: not %run %t 23 2>&1 | FileCheck %s --check-prefix=CHECK23
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// RUN: not %run %t 24 2>&1 | FileCheck %s --check-prefix=CHECK24
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// RUN: not %run %t 25 2>&1 | FileCheck %s --check-prefix=CHECK25
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// RUN: not %run %t 26 2>&1 | FileCheck %s --check-prefix=CHECK26
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// Parts of the test are too platform-specific:
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// REQUIRES: x86_64-supported-target
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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enum ReadOrWrite { Read = 0, Write = 1 };
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struct S32 {
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char x[32];
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};
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template<class T>
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void HeapBuferOverflow(int Idx, ReadOrWrite w) {
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T *t = new T[100];
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static T sink;
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if (w)
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t[100 + Idx] = T();
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else
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sink = t[100 + Idx];
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delete [] t;
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}
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template<class T>
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void HeapUseAfterFree(int Idx, ReadOrWrite w) {
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T *t = new T[100];
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static T sink;
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sink = t[0];
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delete [] t;
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if (w)
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t[Idx] = T();
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else
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sink = t[Idx];
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}
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template<class T>
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void StackBufferOverflow(int Idx, ReadOrWrite w) {
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T t[100];
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static T sink;
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sink = t[Idx];
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if (w)
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t[100 + Idx] = T();
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else
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sink = t[100 + Idx];
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}
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template<class T>
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T *LeakStack() {
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T t[100];
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static volatile T *x;
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x = &t[0];
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return (T*)x;
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}
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template<class T>
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void StackUseAfterReturn(int Idx, ReadOrWrite w) {
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static T sink;
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T *t = LeakStack<T>();
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if (w)
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t[100 + Idx] = T();
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else
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sink = t[100 + Idx];
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}
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char g1[100];
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short g2[100];
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int g4[100];
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int64_t g8[100];
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S32 gm[100];
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void DoubleFree() {
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int *x = new int;
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static volatile int two = 2;
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for (int i = 0; i < two; i++)
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delete x;
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}
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void StackOverflow(int Idx) {
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int some_stack[10000];
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static volatile int *x;
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x = &some_stack[0];
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if (Idx > 0)
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StackOverflow(Idx - 1);
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}
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int main(int argc, char **argv) {
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char arr[100];
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static volatile int zero = 0;
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static volatile int *zero_ptr = 0;
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static volatile int *wild_addr = (int*)0x10000000; // System-dependent.
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if (argc != 2) return 1;
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int kind = atoi(argv[1]);
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switch (kind) {
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case 1: HeapBuferOverflow<char>(0, Read); break;
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case 2: HeapBuferOverflow<int>(0, Read); break;
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case 3: HeapBuferOverflow<short>(0, Write); break;
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case 4: HeapBuferOverflow<int64_t>(2, Write); break;
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case 5: HeapBuferOverflow<S32>(4, Write); break;
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||||
case 6: HeapUseAfterFree<char>(0, Read); break;
|
||||
case 7: HeapUseAfterFree<int>(0, Write); break;
|
||||
case 8: HeapUseAfterFree<int64_t>(0, Read); break;
|
||||
case 9: HeapUseAfterFree<S32>(0, Write); break;
|
||||
case 10: StackBufferOverflow<char>(0, Write); break;
|
||||
case 11: StackBufferOverflow<int64_t>(0, Read); break;
|
||||
case 12: StackBufferOverflow<int>(4, Write); break;
|
||||
case 13: StackUseAfterReturn<char>(0, Read); break;
|
||||
case 14: StackUseAfterReturn<S32>(0, Write); break;
|
||||
case 15: g1[zero + 100] = 0; break;
|
||||
case 16: gm[0] = gm[zero + 100 + 1]; break;
|
||||
case 17: DoubleFree(); break;
|
||||
case 18: StackOverflow(1000000); break;
|
||||
case 19: *zero_ptr = 0; break;
|
||||
case 20: *wild_addr = 0; break;
|
||||
case 21: zero = *wild_addr; break;
|
||||
case 22: abort(); break;
|
||||
case 23: ((void (*)(void))wild_addr)(); break;
|
||||
case 24: delete (new int[10]); break;
|
||||
case 25: free((char*)malloc(100) + 10); break;
|
||||
case 26: memcpy(arr, arr+10, 20); break;
|
||||
// CHECK1: SCARINESS: 12 (1-byte-read-heap-buffer-overflow)
|
||||
// CHECK2: SCARINESS: 17 (4-byte-read-heap-buffer-overflow)
|
||||
// CHECK3: SCARINESS: 33 (2-byte-write-heap-buffer-overflow)
|
||||
// CHECK4: SCARINESS: 52 (8-byte-write-heap-buffer-overflow-far-from-bounds)
|
||||
// CHECK5: SCARINESS: 55 (multi-byte-write-heap-buffer-overflow-far-from-bounds)
|
||||
// CHECK6: SCARINESS: 22 (1-byte-read-heap-use-after-free)
|
||||
// CHECK7: SCARINESS: 46 (4-byte-write-heap-use-after-free)
|
||||
// CHECK8: SCARINESS: 33 (8-byte-read-heap-use-after-free)
|
||||
// CHECK9: SCARINESS: 55 (multi-byte-write-heap-use-after-free)
|
||||
// CHECK10: SCARINESS: 46 (1-byte-write-stack-buffer-overflow)
|
||||
// CHECK11: SCARINESS: 38 (8-byte-read-stack-buffer-overflow)
|
||||
// CHECK12: SCARINESS: 61 (4-byte-write-stack-buffer-overflow-far-from-bounds)
|
||||
// CHECK13: SCARINESS: 32 (1-byte-read-stack-use-after-return)
|
||||
// CHECK14: SCARINESS: 65 (multi-byte-write-stack-use-after-return)
|
||||
// CHECK15: SCARINESS: 31 (1-byte-write-global-buffer-overflow)
|
||||
// CHECK16: SCARINESS: 36 (multi-byte-read-global-buffer-overflow-far-from-bounds)
|
||||
// CHECK17: SCARINESS: 42 (double-free)
|
||||
// CHECK18: SCARINESS: 15 (stack-overflow)
|
||||
// CHECK19: SCARINESS: 10 (null-deref)
|
||||
// CHECK20: SCARINESS: 30 (wild-addr-write)
|
||||
// CHECK21: SCARINESS: 20 (wild-addr-read)
|
||||
// CHECK22: SCARINESS: 10 (signal)
|
||||
// CHECK23: SCARINESS: 60 (wild-jump)
|
||||
// CHECK24: SCARINESS: 10 (alloc-dealloc-mismatch)
|
||||
// CHECK25: SCARINESS: 10 (bad-free)
|
||||
// CHECK26: SCARINESS: 10 (memcpy-param-overlap)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue