1 // RUN: %clang_scudo %s -o %t 2 // RUN: not %run %t malloc 2>&1 | FileCheck %s 3 // RUN: %env_scudo_opts=QuarantineSizeKb=64 not %run %t quarantine 2>&1 | FileCheck %s 4 5 // Tests that header corruption of an allocated or quarantined chunk is caught. 6 7 #include <assert.h> 8 #include <stdlib.h> 9 #include <string.h> 10 main(int argc,char ** argv)11int main(int argc, char **argv) { 12 ssize_t offset = sizeof(void *) == 8 ? 8 : 0; 13 14 assert(argc == 2); 15 16 if (!strcmp(argv[1], "malloc")) { 17 // Simulate a header corruption of an allocated chunk (1-bit) 18 void *p = malloc(1U << 4); 19 assert(p); 20 ((char *)p)[-(offset + 1)] ^= 1; 21 free(p); 22 } 23 if (!strcmp(argv[1], "quarantine")) { 24 void *p = malloc(1U << 4); 25 assert(p); 26 free(p); 27 // Simulate a header corruption of a quarantined chunk 28 ((char *)p)[-(offset + 2)] ^= 1; 29 // Trigger the quarantine recycle 30 for (int i = 0; i < 0x100; i++) { 31 p = malloc(1U << 8); 32 free(p); 33 } 34 } 35 return 0; 36 } 37 38 // CHECK: ERROR: corrupted chunk header at address 39