1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# Copyright (c) 2011 Peter Holm <pho@FreeBSD.org> 5*8a272653SPeter Holm# All rights reserved. 6*8a272653SPeter Holm# 7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 8*8a272653SPeter Holm# modification, are permitted provided that the following conditions 9*8a272653SPeter Holm# are met: 10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 11*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 13*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 14*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 15*8a272653SPeter Holm# 16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8a272653SPeter Holm# SUCH DAMAGE. 27*8a272653SPeter Holm# 28*8a272653SPeter Holm 29*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30*8a272653SPeter Holm 31*8a272653SPeter Holm# Page fault in softdep_revert_mkdir+0x4d seen and 32*8a272653SPeter Holm 33*8a272653SPeter Holm# fsck updates "clean" FS: 34*8a272653SPeter Holm# *** /tmp/dumpfs.1 2010-12-24 19:18:44.000000000 +0100 35*8a272653SPeter Holm# --- /tmp/dumpfs.2 2010-12-24 19:18:46.000000000 +0100 36*8a272653SPeter Holm# *************** 37*8a272653SPeter Holm# *** 5,11 **** 38*8a272653SPeter Holm# frag 8 shift 3 fsbtodb 2 39*8a272653SPeter Holm# minfree 8% optim time symlinklen 120 40*8a272653SPeter Holm# maxbsize 16384 maxbpg 2048 maxcontig 8 contigsumsize 8 41*8a272653SPeter Holm# ! nbfree 62794 ndir 2 nifree 141307 nffree 25 42*8a272653SPeter Holm# bpg 11761 fpg 94088 ipg 23552 unrefs 0 43*8a272653SPeter Holm# nindir 2048 inopb 64 maxfilesize 140806241583103 44*8a272653SPeter Holm# sbsize 2048 cgsize 16384 csaddr 3000 cssize 2048 45*8a272653SPeter Holm# --- 5,11 ---- 46*8a272653SPeter Holm# frag 8 shift 3 fsbtodb 2 47*8a272653SPeter Holm# minfree 8% optim time symlinklen 120 48*8a272653SPeter Holm# maxbsize 16384 maxbpg 2048 maxcontig 8 contigsumsize 8 49*8a272653SPeter Holm# ! nbfree 62794 ndir 30 nifree 141307 nffree 25 50*8a272653SPeter Holm# bpg 11761 fpg 94088 ipg 23552 unrefs 0 51*8a272653SPeter Holm# nindir 2048 inopb 64 maxfilesize 140806241583103 52*8a272653SPeter Holm# sbsize 2048 cgsize 16384 csaddr 3000 cssize 2048 53*8a272653SPeter Holm 54*8a272653SPeter Holm. ../default.cfg 55*8a272653SPeter Holm 56*8a272653SPeter Holmhere=`pwd` 57*8a272653SPeter Holmcd /tmp 58*8a272653SPeter Holmsed '1,/^EOF/d' < $here/$0 > suj10.c 59*8a272653SPeter Holmmycc -o suj10 -Wall -Wextra -O2 suj10.c || exit 1 60*8a272653SPeter Holmrm -f suj10.c 61*8a272653SPeter Holmcd $here 62*8a272653SPeter Holm 63*8a272653SPeter Holmmount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 64*8a272653SPeter Holmmdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 65*8a272653SPeter Holmmdconfig -a -t swap -s 1g -u $mdstart 66*8a272653SPeter Holmnewfs -j md$mdstart > /dev/null 67*8a272653SPeter Holmmount /dev/md$mdstart $mntpoint 68*8a272653SPeter Holmchmod 777 $mntpoint 69*8a272653SPeter Holm 70*8a272653SPeter Holmsu $testuser -c "cd $mntpoint; /tmp/suj10" 71*8a272653SPeter Holm 72*8a272653SPeter Holmwhile mount | grep "$mntpoint " | grep -q /dev/md; do 73*8a272653SPeter Holm umount $mntpoint || sleep 1 74*8a272653SPeter Holmdone 75*8a272653SPeter Holmdumpfs /dev/md$mdstart | grep -vE "UFS2|last.*time" > /tmp/dumpfs.1 76*8a272653SPeter Holmsleep 1 77*8a272653SPeter Holmfsck -t ufs -y -v /dev/md$mdstart > /tmp/fsck.log 2>&1 78*8a272653SPeter Holmdumpfs /dev/md$mdstart | grep -vE "UFS2|last.*time" > /tmp/dumpfs.2 79*8a272653SPeter Holmdiff -c /tmp/dumpfs.1 /tmp/dumpfs.2 || { s=1; cat /tmp/fsck.log; } && s=0 80*8a272653SPeter Holmmdconfig -d -u $mdstart 81*8a272653SPeter Holmrm -f /tmp/fsck.log /tmp/dumpfs.? /tmp/suj10 82*8a272653SPeter Holmexit $s 83*8a272653SPeter HolmEOF 84*8a272653SPeter Holm#include <sys/param.h> 85*8a272653SPeter Holm#include <sys/mount.h> 86*8a272653SPeter Holm#include <sys/stat.h> 87*8a272653SPeter Holm#include <sys/wait.h> 88*8a272653SPeter Holm#include <err.h> 89*8a272653SPeter Holm#include <errno.h> 90*8a272653SPeter Holm#include <fcntl.h> 91*8a272653SPeter Holm#include <sched.h> 92*8a272653SPeter Holm#include <stdio.h> 93*8a272653SPeter Holm#include <stdlib.h> 94*8a272653SPeter Holm#include <unistd.h> 95*8a272653SPeter Holm 96*8a272653SPeter Holm#define PARALLEL 10 97*8a272653SPeter Holm/* 98*8a272653SPeter Holmstatic int size = 14100; 99*8a272653SPeter HolmCauses: 100*8a272653SPeter Holm Fatal trap 12: page fault while in kernel mode 101*8a272653SPeter Holm Stopped at softdep_revert_mkdir+0x4d: movl 0x28(%ebx),%eax 102*8a272653SPeter Holm*/ 103*8a272653SPeter Holmstatic int size = 13000; 104*8a272653SPeter Holm 105*8a272653SPeter Holmstatic void 106*8a272653SPeter Holmtest(void) 107*8a272653SPeter Holm{ 108*8a272653SPeter Holm pid_t pid; 109*8a272653SPeter Holm int fd, i, j; 110*8a272653SPeter Holm char file[128]; 111*8a272653SPeter Holm 112*8a272653SPeter Holm for (;;) { 113*8a272653SPeter Holm if (access("rendezvous", R_OK) == 0) 114*8a272653SPeter Holm break; 115*8a272653SPeter Holm sched_yield(); 116*8a272653SPeter Holm } 117*8a272653SPeter Holm pid = getpid(); 118*8a272653SPeter Holm sprintf(file,"d%05d", pid); 119*8a272653SPeter Holm if (mkdir(file, 0740) == -1) 120*8a272653SPeter Holm err(1, "mkdir(%s)", file); 121*8a272653SPeter Holm chdir(file); 122*8a272653SPeter Holm for (j = 0; j < size; j++) { 123*8a272653SPeter Holm sprintf(file,"p%05d.%05d", pid, j); 124*8a272653SPeter Holm if ((fd = mkdir(file, 0740)) == -1) { 125*8a272653SPeter Holm if (errno != EINTR) { 126*8a272653SPeter Holm warn("mkdir(%s). %s:%d", file, __FILE__, __LINE__); 127*8a272653SPeter Holm unlink("continue"); 128*8a272653SPeter Holm break; 129*8a272653SPeter Holm } 130*8a272653SPeter Holm } 131*8a272653SPeter Holm 132*8a272653SPeter Holm } 133*8a272653SPeter Holm sleep(3); 134*8a272653SPeter Holm 135*8a272653SPeter Holm for (i = --j; i >= 0; i--) { 136*8a272653SPeter Holm sprintf(file,"p%05d.%05d", pid, i); 137*8a272653SPeter Holm if (rmdir(file) == -1) 138*8a272653SPeter Holm err(3, "unlink(%s)", file); 139*8a272653SPeter Holm 140*8a272653SPeter Holm } 141*8a272653SPeter Holm chdir(".."); 142*8a272653SPeter Holm sprintf(file,"d%05d", pid); 143*8a272653SPeter Holm if (rmdir(file) == -1) 144*8a272653SPeter Holm err(3, "unlink(%s)", file); 145*8a272653SPeter Holm} 146*8a272653SPeter Holm 147*8a272653SPeter Holmint 148*8a272653SPeter Holmmain(void) 149*8a272653SPeter Holm{ 150*8a272653SPeter Holm int fd, i, j; 151*8a272653SPeter Holm 152*8a272653SPeter Holm umask(0); 153*8a272653SPeter Holm if ((fd = open("continue", O_CREAT, 0644)) == -1) 154*8a272653SPeter Holm err(1, "open()"); 155*8a272653SPeter Holm close(fd); 156*8a272653SPeter Holm for (i = 0; i < 1; i++) { 157*8a272653SPeter Holm for (j = 0; j < PARALLEL; j++) { 158*8a272653SPeter Holm if (fork() == 0) { 159*8a272653SPeter Holm test(); 160*8a272653SPeter Holm exit(0); 161*8a272653SPeter Holm } 162*8a272653SPeter Holm } 163*8a272653SPeter Holm 164*8a272653SPeter Holm if ((fd = open("rendezvous", O_CREAT, 0644)) == -1) 165*8a272653SPeter Holm err(1, "open()"); 166*8a272653SPeter Holm close(fd); 167*8a272653SPeter Holm 168*8a272653SPeter Holm for (j = 0; j < PARALLEL; j++) 169*8a272653SPeter Holm wait(NULL); 170*8a272653SPeter Holm 171*8a272653SPeter Holm unlink("rendezvous"); 172*8a272653SPeter Holm if (access("continue", R_OK) == -1) { 173*8a272653SPeter Holm fprintf(stderr, "Loop #%d\n", i + 1); fflush(stderr); 174*8a272653SPeter Holm break; 175*8a272653SPeter Holm } 176*8a272653SPeter Holm } 177*8a272653SPeter Holm unlink("continue"); 178*8a272653SPeter Holm 179*8a272653SPeter Holm return (0); 180*8a272653SPeter Holm} 181