Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Out Of Memory (OOM) |
| 3 | * |
| 4 | * The program is designed to cope with unpredictable like amount and |
| 5 | * system physical memory, swap size and other VMM technology like KSM, |
| 6 | * memcg, memory hotplug and so on which may affect the OOM |
| 7 | * behaviours. It simply increase the memory consumption 3G each time |
| 8 | * until all the available memory is consumed and OOM is triggered. |
| 9 | * |
| 10 | * Copyright (C) 2010 Red Hat, Inc. |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of version 2 of the GNU General Public |
| 13 | * License as published by the Free Software Foundation. |
| 14 | * |
| 15 | * This program is distributed in the hope that it would be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 18 | * |
| 19 | * Further, this software is distributed without any warranty that it |
| 20 | * is free of the rightful claim of any third person regarding |
| 21 | * infringement or the like. Any license provided herein, whether |
| 22 | * implied or otherwise, applies only to this software file. Patent |
| 23 | * licenses, if any, provided herein do not apply to combinations of |
| 24 | * this program with other software, or any other product whatsoever. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write the Free Software |
| 28 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 29 | * 02110-1301, USA. |
| 30 | */ |
| 31 | #include <sys/types.h> |
| 32 | #include <sys/stat.h> |
Caspar Zhang | 79667fa | 2012-03-12 14:41:46 +0800 | [diff] [blame] | 33 | #include <errno.h> |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 34 | #include <fcntl.h> |
| 35 | #include <stdio.h> |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 36 | #include <stdlib.h> |
| 37 | #include <unistd.h> |
| 38 | #include "test.h" |
Caspar Zhang | 79667fa | 2012-03-12 14:41:46 +0800 | [diff] [blame] | 39 | #include "mem.h" |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 40 | |
| 41 | char *TCID = "oom01"; |
| 42 | int TST_TOTAL = 1; |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 43 | |
| 44 | int main(int argc, char *argv[]) |
| 45 | { |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 46 | const char *msg; |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 47 | int lc; |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 48 | |
Caspar Zhang | 05697c4 | 2012-02-20 19:20:57 +0800 | [diff] [blame] | 49 | msg = parse_opts(argc, argv, NULL, NULL); |
| 50 | if (msg != NULL) |
Garrett Cooper | 4bab335 | 2011-01-18 01:59:16 -0800 | [diff] [blame] | 51 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 52 | |
Garrett Cooper | 10e5d88 | 2011-01-20 01:29:53 -0800 | [diff] [blame] | 53 | #if __WORDSIZE == 32 |
Garrett Cooper | 4bab335 | 2011-01-18 01:59:16 -0800 | [diff] [blame] | 54 | tst_brkm(TCONF, NULL, "test is not designed for 32-bit system."); |
| 55 | #endif |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 56 | |
| 57 | setup(); |
| 58 | |
| 59 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 60 | tst_count = 0; |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 61 | |
Jan Stancek | 30ac84c | 2014-07-25 09:58:47 +0200 | [diff] [blame] | 62 | /* we expect mmap to fail before OOM is hit */ |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 63 | set_sys_tune("overcommit_memory", 2, 1); |
Jan Stancek | 30ac84c | 2014-07-25 09:58:47 +0200 | [diff] [blame] | 64 | oom(OVERCOMMIT, 0, ENOMEM, 0); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 65 | |
Jan Stancek | 30ac84c | 2014-07-25 09:58:47 +0200 | [diff] [blame] | 66 | /* with overcommit_memory set to 0 or 1 there's no |
| 67 | * guarantee that mmap fails before OOM */ |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 68 | set_sys_tune("overcommit_memory", 0, 1); |
Jan Stancek | 30ac84c | 2014-07-25 09:58:47 +0200 | [diff] [blame] | 69 | oom(OVERCOMMIT, 0, ENOMEM, 1); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 70 | |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 71 | set_sys_tune("overcommit_memory", 1, 1); |
Jan Stancek | 30ac84c | 2014-07-25 09:58:47 +0200 | [diff] [blame] | 72 | testoom(0, 0, ENOMEM, 1); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 73 | } |
| 74 | cleanup(); |
Garrett Cooper | a11ad22 | 2011-01-18 02:02:55 -0800 | [diff] [blame] | 75 | tst_exit(); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | void setup(void) |
| 79 | { |
Garrett Cooper | a11ad22 | 2011-01-18 02:02:55 -0800 | [diff] [blame] | 80 | tst_require_root(NULL); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 81 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 82 | TEST_PAUSE; |
| 83 | |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 84 | overcommit = get_sys_tune("overcommit_memory"); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | void cleanup(void) |
| 88 | { |
Caspar Zhang | ff74ba5 | 2012-02-27 16:13:18 +0800 | [diff] [blame] | 89 | set_sys_tune("overcommit_memory", overcommit, 0); |
Garrett Cooper | 0db5507 | 2011-01-18 01:33:07 -0800 | [diff] [blame] | 90 | } |