| 1 | // RUN: %clang_msan -fsanitize-memory-track-origins=0 -O0 %s -o %t && MSAN_OPTIONS=soft_rss_limit_mb=18:verbosity=1:allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s -implicit-check-not="soft rss limit" -check-prefixes=CHECK,NOORIG |
|---|
| 2 | // RUN: %clang_msan -fsanitize-memory-track-origins=2 -O0 %s -o %t && MSAN_OPTIONS=soft_rss_limit_mb=36:verbosity=1:allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s -implicit-check-not="soft rss limit" -check-prefixes=CHECK,ORIGIN |
|---|
| 3 | |
|---|
| 4 | #include <assert.h> |
|---|
| 5 | #include <sanitizer/allocator_interface.h> |
|---|
| 6 | #include <stdio.h> |
|---|
| 7 | #include <stdlib.h> |
|---|
| 8 | #include <string.h> |
|---|
| 9 | #include <unistd.h> |
|---|
| 10 | |
|---|
| 11 | void *p; |
|---|
| 12 | |
|---|
| 13 | int main(int argc, char **argv) { |
|---|
| 14 | int s = 20 * 1024 * 1024; |
|---|
| 15 | fprintf(stderr, format: "malloc\n" ); |
|---|
| 16 | p = malloc(size: s); |
|---|
| 17 | sleep(seconds: 1); |
|---|
| 18 | fprintf(stderr, format: "memset\n" ); |
|---|
| 19 | memset(s: p, c: 1, n: s); |
|---|
| 20 | sleep(seconds: 1); |
|---|
| 21 | fprintf(stderr, format: "free\n" ); |
|---|
| 22 | free(ptr: p); |
|---|
| 23 | sleep(seconds: 1); |
|---|
| 24 | return 0; |
|---|
| 25 | } |
|---|
| 26 | |
|---|
| 27 | // CHECK-LABEL: malloc |
|---|
| 28 | |
|---|
| 29 | // Non origin mode allocate ~20M for shadow. |
|---|
| 30 | // Origin mode allocate ~20M for shadow and ~20M for origin. |
|---|
| 31 | // CHECK: soft rss limit exhausted |
|---|
| 32 | |
|---|
| 33 | // CHECK-LABEL: memset |
|---|
| 34 | |
|---|
| 35 | // Memset reserve modified pages, frees ~20M for shadow. So not change in RSS for non-origin mode. |
|---|
| 36 | // Origin mode also frees ~20M of origins, so 'unexhausted'. |
|---|
| 37 | // ORIGIN: soft rss limit unexhausted |
|---|
| 38 | |
|---|
| 39 | // CHECK-LABEL: free |
|---|
| 40 | |
|---|
| 41 | // Now non-origin release all everything. |
|---|
| 42 | // NOORIG: soft rss limit unexhausted |
|---|
