391 lines
13 KiB
C++
391 lines
13 KiB
C++
//===-- asan_errors.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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// ASan-private header for error structures.
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_ERRORS_H
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#define ASAN_ERRORS_H
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#include "asan_descriptions.h"
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#include "asan_scariness_score.h"
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#include "sanitizer_common/sanitizer_common.h"
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namespace __asan {
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struct ErrorBase {
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ErrorBase() = default;
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explicit ErrorBase(u32 tid_) : tid(tid_) {}
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ScarinessScoreBase scariness;
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u32 tid;
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};
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struct ErrorStackOverflow : ErrorBase {
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uptr addr, pc, bp, sp;
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// ErrorStackOverflow never owns the context.
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void *context;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorStackOverflow() = default;
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ErrorStackOverflow(u32 tid, const SignalContext &sig)
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: ErrorBase(tid),
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addr(sig.addr),
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pc(sig.pc),
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bp(sig.bp),
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sp(sig.sp),
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context(sig.context) {
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scariness.Clear();
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scariness.Scare(10, "stack-overflow");
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}
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void Print();
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};
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struct ErrorDeadlySignal : ErrorBase {
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uptr addr, pc, bp, sp;
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// ErrorDeadlySignal never owns the context.
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void *context;
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int signo;
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SignalContext::WriteFlag write_flag;
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bool is_memory_access;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorDeadlySignal() = default;
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ErrorDeadlySignal(u32 tid, const SignalContext &sig, int signo_)
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: ErrorBase(tid),
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addr(sig.addr),
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pc(sig.pc),
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bp(sig.bp),
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sp(sig.sp),
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context(sig.context),
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signo(signo_),
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write_flag(sig.write_flag),
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is_memory_access(sig.is_memory_access) {
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scariness.Clear();
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if (is_memory_access) {
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if (addr < GetPageSizeCached()) {
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scariness.Scare(10, "null-deref");
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} else if (addr == pc) {
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scariness.Scare(60, "wild-jump");
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} else if (write_flag == SignalContext::WRITE) {
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scariness.Scare(30, "wild-addr-write");
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} else if (write_flag == SignalContext::READ) {
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scariness.Scare(20, "wild-addr-read");
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} else {
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scariness.Scare(25, "wild-addr");
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}
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} else {
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scariness.Scare(10, "signal");
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}
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}
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void Print();
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};
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struct ErrorDoubleFree : ErrorBase {
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// ErrorDoubleFree doesn't own the stack trace.
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const BufferedStackTrace *second_free_stack;
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HeapAddressDescription addr_description;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorDoubleFree() = default;
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ErrorDoubleFree(u32 tid, BufferedStackTrace *stack, uptr addr)
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: ErrorBase(tid), second_free_stack(stack) {
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CHECK_GT(second_free_stack->size, 0);
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GetHeapAddressInformation(addr, 1, &addr_description);
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scariness.Clear();
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scariness.Scare(42, "double-free");
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}
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void Print();
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};
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struct ErrorNewDeleteSizeMismatch : ErrorBase {
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// ErrorNewDeleteSizeMismatch doesn't own the stack trace.
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const BufferedStackTrace *free_stack;
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HeapAddressDescription addr_description;
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uptr delete_size;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorNewDeleteSizeMismatch() = default;
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ErrorNewDeleteSizeMismatch(u32 tid, BufferedStackTrace *stack, uptr addr,
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uptr delete_size_)
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: ErrorBase(tid), free_stack(stack), delete_size(delete_size_) {
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GetHeapAddressInformation(addr, 1, &addr_description);
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scariness.Clear();
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scariness.Scare(10, "new-delete-type-mismatch");
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}
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void Print();
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};
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struct ErrorFreeNotMalloced : ErrorBase {
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// ErrorFreeNotMalloced doesn't own the stack trace.
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const BufferedStackTrace *free_stack;
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AddressDescription addr_description;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorFreeNotMalloced() = default;
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ErrorFreeNotMalloced(u32 tid, BufferedStackTrace *stack, uptr addr)
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: ErrorBase(tid),
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free_stack(stack),
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addr_description(addr, /*shouldLockThreadRegistry=*/false) {
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scariness.Clear();
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scariness.Scare(40, "bad-free");
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}
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void Print();
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};
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struct ErrorAllocTypeMismatch : ErrorBase {
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// ErrorAllocTypeMismatch doesn't own the stack trace.
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const BufferedStackTrace *dealloc_stack;
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HeapAddressDescription addr_description;
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AllocType alloc_type, dealloc_type;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorAllocTypeMismatch() = default;
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ErrorAllocTypeMismatch(u32 tid, BufferedStackTrace *stack, uptr addr,
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AllocType alloc_type_, AllocType dealloc_type_)
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: ErrorBase(tid),
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dealloc_stack(stack),
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alloc_type(alloc_type_),
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dealloc_type(dealloc_type_) {
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GetHeapAddressInformation(addr, 1, &addr_description);
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scariness.Clear();
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scariness.Scare(10, "alloc-dealloc-mismatch");
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};
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void Print();
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};
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struct ErrorMallocUsableSizeNotOwned : ErrorBase {
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// ErrorMallocUsableSizeNotOwned doesn't own the stack trace.
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const BufferedStackTrace *stack;
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AddressDescription addr_description;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorMallocUsableSizeNotOwned() = default;
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ErrorMallocUsableSizeNotOwned(u32 tid, BufferedStackTrace *stack_, uptr addr)
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: ErrorBase(tid),
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stack(stack_),
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addr_description(addr, /*shouldLockThreadRegistry=*/false) {
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scariness.Clear();
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scariness.Scare(10, "bad-malloc_usable_size");
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}
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void Print();
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};
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struct ErrorSanitizerGetAllocatedSizeNotOwned : ErrorBase {
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// ErrorSanitizerGetAllocatedSizeNotOwned doesn't own the stack trace.
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const BufferedStackTrace *stack;
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AddressDescription addr_description;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorSanitizerGetAllocatedSizeNotOwned() = default;
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ErrorSanitizerGetAllocatedSizeNotOwned(u32 tid, BufferedStackTrace *stack_,
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uptr addr)
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: ErrorBase(tid),
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stack(stack_),
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addr_description(addr, /*shouldLockThreadRegistry=*/false) {
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scariness.Clear();
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scariness.Scare(10, "bad-__sanitizer_get_allocated_size");
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}
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void Print();
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};
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struct ErrorStringFunctionMemoryRangesOverlap : ErrorBase {
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// ErrorStringFunctionMemoryRangesOverlap doesn't own the stack trace.
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const BufferedStackTrace *stack;
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uptr length1, length2;
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AddressDescription addr1_description;
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AddressDescription addr2_description;
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const char *function;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorStringFunctionMemoryRangesOverlap() = default;
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ErrorStringFunctionMemoryRangesOverlap(u32 tid, BufferedStackTrace *stack_,
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uptr addr1, uptr length1_, uptr addr2,
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uptr length2_, const char *function_)
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: ErrorBase(tid),
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stack(stack_),
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length1(length1_),
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length2(length2_),
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addr1_description(addr1, length1, /*shouldLockThreadRegistry=*/false),
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addr2_description(addr2, length2, /*shouldLockThreadRegistry=*/false),
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function(function_) {
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char bug_type[100];
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internal_snprintf(bug_type, sizeof(bug_type), "%s-param-overlap", function);
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scariness.Clear();
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scariness.Scare(10, bug_type);
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}
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void Print();
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};
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struct ErrorStringFunctionSizeOverflow : ErrorBase {
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// ErrorStringFunctionSizeOverflow doesn't own the stack trace.
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const BufferedStackTrace *stack;
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AddressDescription addr_description;
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uptr size;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorStringFunctionSizeOverflow() = default;
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ErrorStringFunctionSizeOverflow(u32 tid, BufferedStackTrace *stack_,
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uptr addr, uptr size_)
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: ErrorBase(tid),
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stack(stack_),
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addr_description(addr, /*shouldLockThreadRegistry=*/false),
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size(size_) {
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scariness.Clear();
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scariness.Scare(10, "negative-size-param");
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}
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void Print();
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};
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struct ErrorBadParamsToAnnotateContiguousContainer : ErrorBase {
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// ErrorBadParamsToAnnotateContiguousContainer doesn't own the stack trace.
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const BufferedStackTrace *stack;
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uptr beg, end, old_mid, new_mid;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorBadParamsToAnnotateContiguousContainer() = default;
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// PS4: Do we want an AddressDescription for beg?
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ErrorBadParamsToAnnotateContiguousContainer(u32 tid,
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BufferedStackTrace *stack_,
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uptr beg_, uptr end_,
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uptr old_mid_, uptr new_mid_)
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: ErrorBase(tid),
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stack(stack_),
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beg(beg_),
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end(end_),
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old_mid(old_mid_),
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new_mid(new_mid_) {
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scariness.Clear();
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scariness.Scare(10, "bad-__sanitizer_annotate_contiguous_container");
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}
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void Print();
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};
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struct ErrorODRViolation : ErrorBase {
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__asan_global global1, global2;
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u32 stack_id1, stack_id2;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorODRViolation() = default;
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ErrorODRViolation(u32 tid, const __asan_global *g1, u32 stack_id1_,
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const __asan_global *g2, u32 stack_id2_)
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: ErrorBase(tid),
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global1(*g1),
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global2(*g2),
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stack_id1(stack_id1_),
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stack_id2(stack_id2_) {
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scariness.Clear();
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scariness.Scare(10, "odr-violation");
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}
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void Print();
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};
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struct ErrorInvalidPointerPair : ErrorBase {
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uptr pc, bp, sp;
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AddressDescription addr1_description;
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AddressDescription addr2_description;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorInvalidPointerPair() = default;
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ErrorInvalidPointerPair(u32 tid, uptr pc_, uptr bp_, uptr sp_, uptr p1,
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uptr p2)
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: ErrorBase(tid),
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pc(pc_),
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bp(bp_),
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sp(sp_),
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addr1_description(p1, 1, /*shouldLockThreadRegistry=*/false),
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addr2_description(p2, 1, /*shouldLockThreadRegistry=*/false) {
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scariness.Clear();
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scariness.Scare(10, "invalid-pointer-pair");
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}
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void Print();
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};
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struct ErrorGeneric : ErrorBase {
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AddressDescription addr_description;
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uptr pc, bp, sp;
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uptr access_size;
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const char *bug_descr;
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bool is_write;
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u8 shadow_val;
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// VS2013 doesn't implement unrestricted unions, so we need a trivial default
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// constructor
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ErrorGeneric() = default;
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ErrorGeneric(u32 tid, uptr addr, uptr pc_, uptr bp_, uptr sp_, bool is_write_,
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uptr access_size_);
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void Print();
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};
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// clang-format off
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#define ASAN_FOR_EACH_ERROR_KIND(macro) \
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macro(StackOverflow) \
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macro(DeadlySignal) \
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macro(DoubleFree) \
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macro(NewDeleteSizeMismatch) \
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macro(FreeNotMalloced) \
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macro(AllocTypeMismatch) \
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macro(MallocUsableSizeNotOwned) \
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macro(SanitizerGetAllocatedSizeNotOwned) \
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macro(StringFunctionMemoryRangesOverlap) \
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macro(StringFunctionSizeOverflow) \
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macro(BadParamsToAnnotateContiguousContainer) \
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macro(ODRViolation) \
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macro(InvalidPointerPair) \
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macro(Generic)
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// clang-format on
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#define ASAN_DEFINE_ERROR_KIND(name) kErrorKind##name,
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#define ASAN_ERROR_DESCRIPTION_MEMBER(name) Error##name name;
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#define ASAN_ERROR_DESCRIPTION_CONSTRUCTOR(name) \
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ErrorDescription(Error##name const &e) : kind(kErrorKind##name), name(e) {}
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#define ASAN_ERROR_DESCRIPTION_PRINT(name) \
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case kErrorKind##name: \
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return name.Print();
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enum ErrorKind {
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kErrorKindInvalid = 0,
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ASAN_FOR_EACH_ERROR_KIND(ASAN_DEFINE_ERROR_KIND)
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};
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struct ErrorDescription {
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ErrorKind kind;
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// We're using a tagged union because it allows us to have a trivially
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// copiable type and use the same structures as the public interface.
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//
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// We can add a wrapper around it to make it "more c++-like", but that would
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// add a lot of code and the benefit wouldn't be that big.
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union {
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ErrorBase Base;
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ASAN_FOR_EACH_ERROR_KIND(ASAN_ERROR_DESCRIPTION_MEMBER)
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};
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ErrorDescription() { internal_memset(this, 0, sizeof(*this)); }
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ASAN_FOR_EACH_ERROR_KIND(ASAN_ERROR_DESCRIPTION_CONSTRUCTOR)
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bool IsValid() { return kind != kErrorKindInvalid; }
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void Print() {
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switch (kind) {
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ASAN_FOR_EACH_ERROR_KIND(ASAN_ERROR_DESCRIPTION_PRINT)
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case kErrorKindInvalid:
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CHECK(0);
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}
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CHECK(0);
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}
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};
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#undef ASAN_FOR_EACH_ERROR_KIND
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#undef ASAN_DEFINE_ERROR_KIND
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#undef ASAN_ERROR_DESCRIPTION_MEMBER
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#undef ASAN_ERROR_DESCRIPTION_CONSTRUCTOR
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#undef ASAN_ERROR_DESCRIPTION_PRINT
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} // namespace __asan
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#endif // ASAN_ERRORS_H
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