1#!/bin/sh 2 3# 4# Copyright (c) 2013 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# "panic: kmem_malloc(4096): kmem_map too small" seen. 30 31. ../default.cfg 32[ $((`sysctl -n vm.kmem_size` / 1024 / 1024 / 1024)) -eq 0 ] && exit 0 33 34dir=/tmp 35odir=`pwd` 36cd $dir 37sed '1,/^EOF/d' < $odir/$0 > $dir/shm_open.c 38mycc -o shm_open -Wall -Wextra -O2 -g shm_open.c || exit 1 39rm -f shm_open.c 40cd $odir 41 42v1=`vmstat -m | awk '/shmfd/{gsub("K", ""); print $3}'` 43su $testuser -c /tmp/shm_open 44v2=`vmstat -m | awk '/shmfd/{gsub("K", ""); print $3}'` 45v2=$((v2 - v1)) 46[ $v2 -gt 10 ] && { echo "shmfd leaked ${v2}K"; s=1; } || s=0 47 48rm -f /tmp/shm_open 49exit $s 50 51EOF 52#include <err.h> 53#include <fcntl.h> 54#include <stdio.h> 55#include <stdlib.h> 56#include <sys/mman.h> 57#include <unistd.h> 58 59int 60main(void) 61{ 62 pid_t pid; 63 off_t len; 64 int fd, i; 65 char name[80]; 66 67 len = 1024 * 1024; 68 pid = getpid(); 69 for (i = 0; i < 500000; i++) { 70 sprintf(name, "/testing.%06d.%06d", pid, i); 71 72 if ((fd = shm_open(name, O_RDWR | O_CREAT, 0644)) == -1) 73 err(1, "shm_open()"); 74 if (ftruncate(fd, len) == -1) 75 err(1, "ftruncate"); 76 close(fd); 77 } 78 for (i = 0; i < 500000; i++) { 79 sprintf(name, "/testing.%06d.%06d", pid, i); 80 if (shm_unlink(name) == -1) 81 err(1, "shm_unlink(%s)", name); 82 } 83 84 return(0); 85} 86