153770e78SNico Weber // RUN: %clangxx_hwasan -O0 %s -o %t 253770e78SNico Weber // RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s 353770e78SNico Weber // RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t m1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL 453770e78SNico Weber // RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s 553770e78SNico Weber // RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t psm1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL 653770e78SNico Weber 753770e78SNico Weber // UNSUPPORTED: android 853770e78SNico Weber 953770e78SNico Weber // Checks that pvalloc overflows are caught. If the allocator is allowed to 1053770e78SNico Weber // return null, the errno should be set to ENOMEM. 1153770e78SNico Weber 1253770e78SNico Weber #include <assert.h> 1353770e78SNico Weber #include <errno.h> 1453770e78SNico Weber #include <malloc.h> 1553770e78SNico Weber #include <stdint.h> 1653770e78SNico Weber #include <string.h> 1753770e78SNico Weber #include <unistd.h> 1853770e78SNico Weber main(int argc,char * argv[])1953770e78SNico Weberint main(int argc, char *argv[]) { 2053770e78SNico Weber assert(argc == 2); 2153770e78SNico Weber const char *action = argv[1]; 2253770e78SNico Weber 2353770e78SNico Weber const size_t page_size = sysconf(_SC_PAGESIZE); 2453770e78SNico Weber 2553770e78SNico Weber void *p = nullptr; 2696a4167bSMatt Morehouse if (!strcmp(action, "m1")) { 2753770e78SNico Weber p = pvalloc((uintptr_t)-1); 2896a4167bSMatt Morehouse } else if (!strcmp(action, "psm1")) { 2953770e78SNico Weber p = pvalloc((uintptr_t)-(page_size - 1)); 3053770e78SNico Weber } else { 3153770e78SNico Weber assert(0); 3253770e78SNico Weber } 3353770e78SNico Weber 3496a4167bSMatt Morehouse fprintf(stderr, "errno: %d\n", errno); 3553770e78SNico Weber 3653770e78SNico Weber return p != nullptr; 3753770e78SNico Weber } 3853770e78SNico Weber 3953770e78SNico Weber // CHECK: {{ERROR: HWAddressSanitizer: pvalloc parameters overflow: size .* rounded up to system page size .* cannot be represented in type size_t}} 4053770e78SNico Weber // CHECK: {{#0 0x.* in .*pvalloc}} 41efba6421SVitaly Buka // CHECK: {{#1 0x.* in main .*pvalloc-overflow.cpp:}} 42*71e5652fSVitaly Buka // CHECK: SUMMARY: HWAddressSanitizer: pvalloc-overflow {{.*}} in main 4353770e78SNico Weber 4453770e78SNico Weber // CHECK-NULL: errno: 12 45