Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // Stress test recovery mode with many threads. |
| 2 | // |
| 3 | // RUN: %clangxx_asan -fsanitize-recover=address -pthread %s -o %t |
| 4 | // |
| 5 | // RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false %run %t 1 10 >1.txt 2>&1 |
| 6 | // RUN: FileCheck %s < 1.txt |
| 7 | // RUN: [ $(grep -c 'ERROR: AddressSanitizer: use-after-poison' 1.txt) -eq 10 ] |
| 8 | // RUN: FileCheck --check-prefix=CHECK-NO-COLLISION %s < 1.txt |
| 9 | // |
| 10 | // Collisions are unlikely but still possible so we need the ||. |
| 11 | // RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false %run %t 10 20 >10.txt 2>&1 || true |
| 12 | // This one is racy although _very_ unlikely to fail: |
| 13 | // RUN: FileCheck %s < 10.txt |
| 14 | // RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 1.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 1.txt |
| 15 | // |
| 16 | // Collisions are unlikely but still possible so we need the ||. |
| 17 | // RUN: %env_asan_opts=halt_on_error=false %run %t 10 20 >10.txt 2>&1 || true |
| 18 | // This one is racy although _very_ unlikely to fail: |
| 19 | // RUN: FileCheck %s < 10.txt |
| 20 | // RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 1.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 1.txt |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <pthread.h> |
| 25 | #include <time.h> |
| 26 | |
| 27 | #include <sanitizer/asan_interface.h> |
| 28 | |
| 29 | size_t nthreads = 10; |
| 30 | size_t niter = 10; |
| 31 | |
| 32 | void random_delay(unsigned *seed) { |
| 33 | *seed = 1664525 * *seed + 1013904223; |
| 34 | struct timespec delay = { 0, (*seed % 1000) * 1000 }; |
| 35 | nanosleep(&delay, 0); |
| 36 | } |
| 37 | |
| 38 | void *run(void *arg) { |
| 39 | unsigned seed = (unsigned)(size_t)arg; |
| 40 | |
| 41 | volatile char tmp[2]; |
| 42 | __asan_poison_memory_region(&tmp, sizeof(tmp)); |
| 43 | |
| 44 | for (size_t i = 0; i < niter; ++i) { |
| 45 | random_delay(&seed); |
| 46 | // Expect error collisions here |
| 47 | // CHECK: ERROR: AddressSanitizer: use-after-poison |
| 48 | volatile int idx = 0; |
| 49 | tmp[idx] = 0; |
| 50 | } |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | int main(int argc, char **argv) { |
| 56 | if (argc != 3) { |
| 57 | fprintf(stderr, "Syntax: %s nthreads niter\n", argv[0]); |
| 58 | exit(1); |
| 59 | } |
| 60 | |
| 61 | nthreads = (size_t)strtoul(argv[1], 0, 0); |
| 62 | niter = (size_t)strtoul(argv[2], 0, 0); |
| 63 | |
| 64 | pthread_t *tids = new pthread_t[nthreads]; |
| 65 | |
| 66 | for (size_t i = 0; i < nthreads; ++i) { |
| 67 | if (0 != pthread_create(&tids[i], 0, run, (void *)i)) { |
| 68 | fprintf(stderr, "Failed to create thread\n"); |
| 69 | exit(1); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | for (size_t i = 0; i < nthreads; ++i) { |
| 74 | if (0 != pthread_join(tids[i], 0)) { |
| 75 | fprintf(stderr, "Failed to join thread\n"); |
| 76 | exit(1); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | // CHECK-COLLISION: AddressSanitizer: nested bug in the same thread, aborting |
| 81 | // CHECK-NO-COLLISION: All threads terminated |
| 82 | printf("All threads terminated\n"); |
| 83 | |
| 84 | delete [] tids; |
| 85 | |
| 86 | return 0; |
| 87 | } |