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// Stress test recovery mode with many threads.
//
// RUN: %clangxx_asan -fsanitize-recover=address -pthread %s -o %t
//
// RUN: rm -f 1.txt
// RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false %run %t 1 10 >>1.txt 2>&1
// RUN: FileCheck %s < 1.txt
// RUN: grep 'ERROR: AddressSanitizer: use-after-poison' 1.txt | count 10
// RUN: FileCheck --check-prefix=CHECK-NO-COLLISION %s < 1.txt
//
// Collisions are unlikely but still possible so we need the ||.
// RUN: rm -f 10.txt
// RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false:exitcode=0 %run %t 10 20 >>10.txt 2>&1
// RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 10.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 10.txt
//
// Collisions are unlikely but still possible so we need the ||.
// RUN: rm -f 20.txt
// RUN: %env_asan_opts=halt_on_error=false:exitcode=0 %run %t 10 20 >>20.txt 2>&1
// RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 20.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 20.txt
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <time.h>
#include <sanitizer/asan_interface.h>
size_t nthreads = 10;
size_t niter = 10;
void random_delay(unsigned *seed) {
*seed = 1664525 * *seed + 1013904223;
struct timespec delay = { 0, (*seed % 1000) * 1000 };
nanosleep(&delay, 0);
}
void *run(void *arg) {
unsigned seed = (unsigned)(size_t)arg;
volatile char tmp[2];
__asan_poison_memory_region(&tmp, sizeof(tmp));
for (size_t i = 0; i < niter; ++i) {
random_delay(&seed);
// Expect error collisions here
// CHECK: ERROR: AddressSanitizer: use-after-poison
volatile int idx = 0;
tmp[idx] = 0;
}
return 0;
}
int main(int argc, char **argv) {
if (argc != 3) {
fprintf(stderr, "Syntax: %s nthreads niter\n", argv[0]);
exit(1);
}
nthreads = (size_t)strtoul(argv[1], 0, 0);
niter = (size_t)strtoul(argv[2], 0, 0);
pthread_t *tids = new pthread_t[nthreads];
for (size_t i = 0; i < nthreads; ++i) {
if (0 != pthread_create(&tids[i], 0, run, (void *)i)) {
fprintf(stderr, "Failed to create thread\n");
exit(1);
}
}
for (size_t i = 0; i < nthreads; ++i) {
if (0 != pthread_join(tids[i], 0)) {
fprintf(stderr, "Failed to join thread\n");
exit(1);
}
}
// CHECK-COLLISION: AddressSanitizer: nested bug in the same thread, aborting
// CHECK-NO-COLLISION: All threads terminated
printf("All threads terminated\n");
delete [] tids;
return 0;
}
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