1#!/bin/sh 2 3# 4# Copyright (c) 2014 EMC Corp. 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: vm_map_protect: inaccessible wired map entry" seen: 30# http://people.freebsd.org/~pho/stress/log/mmap11.txt 31# Fixed in r266780. 32 33# Test scenario by: Mark Johnston markj@ 34 35. ../default.cfg 36 37dir=/tmp 38odir=`pwd` 39cd $dir 40sed '1,/^EOF/d' < $odir/$0 > $dir/mmap12.c 41mycc -o mmap12 -O2 -Wall -Wextra mmap12.c || exit 1 42rm -f mmap12.c 43cd $odir 44 45/tmp/mmap12 46 47rm -f /tmp/mmap12 48exit 49 50EOF 51#include <sys/mman.h> 52 53#include <err.h> 54#include <string.h> 55#include <unistd.h> 56 57int 58main(void) 59{ 60 void *addr; 61 size_t sz = 1; 62 63/* 64 * This is the minimum amount of C code ot takes to panic the kernel. 65 * This is as submitted and thus not a complete and correct test program. 66 */ 67 addr = mmap(NULL, sz, PROT_READ, MAP_ANON, -1, 0); 68 if (addr == NULL) 69 err(1, "mmap"); 70 71 if (mlock(addr, sz) != 0) 72 err(1, "mlock"); 73 if (mprotect(addr, sz, PROT_NONE) != 0) 74 err(1, "mprotect 1"); 75 if (mprotect(addr, sz, PROT_WRITE) != 0) 76 err(1, "mprotect 2"); 77 if (munmap(addr, sz) != 0) 78 err(1, "munmap"); 79 80 return (0); 81} 82