forked from OSchip/llvm-project
92 lines
4.2 KiB
C++
92 lines
4.2 KiB
C++
// This test requires operator new to be intercepted by the hwasan runtime,
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// so we need to avoid linking against libc++.
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// RUN: %clangxx_hwasan %s -nostdlib++ -lstdc++ -o %t
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t malloc 2>&1
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t malloc max 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t malloc max 2>&1
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-calloc
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t calloc 2>&1
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t reallocarray 2>&1 | FileCheck %s --check-prefix=CHECK-reallocarray
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t reallocarray 2>&1
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-oom
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new max 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 not %run %t new max 2>&1 | FileCheck %s --check-prefix=CHECK-oom
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new-nothrow 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t new-nothrow 2>&1
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new-nothrow max 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t new-nothrow max 2>&1
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// RUN: %run %t usable 2>&1
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// Tests for various edge cases related to sizes, notably the maximum size the
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// allocator can allocate. Tests that an integer overflow in the parameters of
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// calloc is caught.
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#include <assert.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits>
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#include <new>
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#include <sanitizer/allocator_interface.h>
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#include <sanitizer/hwasan_interface.h>
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int main(int argc, char **argv) {
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assert(argc <= 3);
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bool test_size_max = argc == 3 && !strcmp(argv[2], "max");
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static const size_t kMaxAllowedMallocSize = 1ULL << 40;
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static const size_t kChunkHeaderSize = 16;
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size_t MallocSize = test_size_max ? std::numeric_limits<size_t>::max()
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: kMaxAllowedMallocSize;
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if (!strcmp(argv[1], "malloc")) {
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void *p = malloc(MallocSize);
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assert(!p);
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p = malloc(kMaxAllowedMallocSize - kChunkHeaderSize);
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assert(!p);
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} else if (!strcmp(argv[1], "calloc")) {
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// Trigger an overflow in calloc.
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size_t size = std::numeric_limits<size_t>::max();
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void *p = calloc((size / 0x1000) + 1, 0x1000);
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assert(!p);
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} else if (!strcmp(argv[1], "reallocarray")) {
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// Trigger an overflow in reallocarray.
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size_t size = std::numeric_limits<size_t>::max();
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void *p = __sanitizer_reallocarray(nullptr, (size / 0x1000) + 1, 0x1000);
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assert(!p);
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} else if (!strcmp(argv[1], "new")) {
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void *p = operator new(MallocSize);
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assert(!p);
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} else if (!strcmp(argv[1], "new-nothrow")) {
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void *p = operator new(MallocSize, std::nothrow);
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assert(!p);
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} else if (!strcmp(argv[1], "usable")) {
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// Playing with the actual usable size of a chunk.
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void *p = malloc(1007);
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assert(p);
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size_t size = __sanitizer_get_allocated_size(p);
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assert(size >= 1007);
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memset(p, 'A', size);
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p = realloc(p, 2014);
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assert(p);
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size = __sanitizer_get_allocated_size(p);
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assert(size >= 2014);
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memset(p, 'B', size);
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free(p);
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} else {
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assert(0);
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}
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return 0;
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}
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// CHECK-max: {{ERROR: HWAddressSanitizer: requested allocation size .* exceeds maximum supported size}}
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// CHECK-oom: ERROR: HWAddressSanitizer: allocator is out of memory
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// CHECK-calloc: ERROR: HWAddressSanitizer: calloc parameters overflow
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// CHECK-reallocarray: ERROR: HWAddressSanitizer: reallocarray parameters overflow
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