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 { 13 ssize_t offset = sizeof(void *) == 8 ? 8 : 0; 14 15 assert(argc == 2); 16 17 if (!strcmp(argv[1], "malloc")) { 18 // Simulate a header corruption of an allocated chunk (1-bit) 19 void *p = malloc(1U << 4); 20 assert(p); 21 ((char *)p)[-(offset + 1)] ^= 1; 22 free(p); 23 } 24 if (!strcmp(argv[1], "quarantine")) { 25 void *p = malloc(1U << 4); 26 assert(p); 27 free(p); 28 // Simulate a header corruption of a quarantined chunk 29 ((char *)p)[-(offset + 2)] ^= 1; 30 // Trigger the quarantine recycle 31 for (int i = 0; i < 0x100; i++) { 32 p = malloc(1U << 8); 33 free(p); 34 } 35 } 36 return 0; 37 } 38 39 // CHECK: ERROR: corrupted chunk header at address 40