1#!/bin/sh 2 3# 4# Copyright (c) 2017 Dell EMC Isilon 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# Regression test for r322799: 30# Ensure that fs/gs bases are stored in pcb before copying the pcb for 31# new process or thread. 32 33# "Exit status is 139" seen. 34 35# Test scenario suggestion by kib@ 36 37. ../default.cfg 38 39dir=/tmp 40odir=`pwd` 41cd $dir 42sed '1,/^EOF/d' < $odir/$0 > $dir/fsgs.c 43mycc -o fsgs -Wall -Wextra -O0 -g fsgs.c || exit 1 44rm -f fsgs.c 45cd $odir 46 47$dir/fsgs 48s=$? 49[ -f $dir/fsgs.core ] && 50 { file $dir/fsgs.core; s=1; } 51 52rm -rf $dir/fsgs $dir/fsgs.core 53exit $s 54 55EOF 56#include <sys/param.h> 57#include <sys/mman.h> 58#include <sys/stat.h> 59#include <sys/wait.h> 60 61#include <machine/atomic.h> 62 63#include <err.h> 64#include <errno.h> 65#include <fcntl.h> 66#include <stdio.h> 67#include <stdlib.h> 68#include <time.h> 69#include <unistd.h> 70 71static volatile u_int *share; 72 73#define PARALLEL 4 74#define RUNTIME (1 * 60) 75#define SYNC 0 76 77static void 78test(void) 79{ 80 pid_t pid; 81 int i, status; 82 volatile char *cp; 83 84 atomic_add_int(&share[SYNC], 1); 85 while (share[SYNC] != PARALLEL) 86 ; 87 88 for (i = 0; i < 100; i++) { 89 if ((pid = fork()) == 0) { 90 cp = malloc(2); 91 _exit(cp == NULL); 92 } 93 if (waitpid(pid, &status, 0) != pid) 94 err(1, "waitpid(%d)", pid); 95 if (status != 0) { 96 fprintf(stderr, "Exit status is %d\n", status); 97 exit(1); 98 } 99 } 100 101 _exit(0); 102} 103 104int 105main(void) 106{ 107 pid_t pids[PARALLEL]; 108 size_t len; 109 time_t start; 110 int e, i, status; 111 112 e = 0; 113 len = PAGE_SIZE; 114 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 115 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 116 err(1, "mmap"); 117 118 start = time(NULL); 119 while ((time(NULL) - start) < RUNTIME && e == 0) { 120 share[SYNC] = 0; 121 for (i = 0; i < PARALLEL; i++) { 122 if ((pids[i] = fork()) == 0) 123 test(); 124 if (pids[i] == -1) 125 err(1, "fork()"); 126 } 127 for (i = 0; i < PARALLEL; i++) { 128 if (waitpid(pids[i], &status, 0) == -1) 129 err(1, "waitpid(%d)", pids[i]); 130 e += status == 0 ? 0 : 1; 131 } 132 } 133 134 return (e); 135} 136