svn commit: r330816 - user/pho/stress2/misc
Peter Holm
pho at FreeBSD.org
Mon Mar 12 21:50:00 UTC 2018
Author: pho
Date: Mon Mar 12 21:49:59 2018
New Revision: 330816
URL: https://svnweb.freebsd.org/changeset/base/330816
Log:
Added two tests for triggering a "newbuf" deadlock.
Sponsored by: Dell EMC Isilon
Added:
user/pho/stress2/misc/fdatasync.sh (contents, props changed)
user/pho/stress2/misc/fdatasync2.sh (contents, props changed)
Added: user/pho/stress2/misc/fdatasync.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/pho/stress2/misc/fdatasync.sh Mon Mar 12 21:49:59 2018 (r330816)
@@ -0,0 +1,202 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2018 Dell EMC Isilon
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# fdatasync(2) fuzz.
+
+# Deadlock seen:
+# https://people.freebsd.org/~pho/stress/log/fdatasync.txt
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+dir=$RUNDIR
+nfiles=500
+[ `df -i $dir | tail -1 | awk '{print $7}'` -lt $nfiles ] && exit 0
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > fdatasync.c
+rm -f /tmp/fdatasync
+mycc -o fdatasync -Wall -Wextra -O2 -g fdatasync.c -lpthread || exit 1
+rm -f fdatasync.c
+
+mkdir -p $dir && chmod 777 $dir
+
+cd $dir
+jot $nfiles | xargs touch
+jot $nfiles | xargs chmod 666
+cd $odir
+
+(cd /tmp; /tmp/fdatasync $dir)
+e=$?
+
+rm -rf $dir/* /tmp/fdatasync
+exit $e
+EOF
+#include <sys/param.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <libutil.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define N (128 * 1024 / (int)sizeof(u_int32_t))
+#define RUNTIME 180
+#define THREADS 2
+
+static int fd[900];
+static u_int32_t r[N];
+static char *args[2];
+
+static unsigned long
+makearg(void)
+{
+ unsigned long val;
+
+ val = arc4random();
+#if defined(__LP64__)
+ val = (val << 32) | arc4random();
+ val = val & 0x00007fffffffffffUL;
+#endif
+
+ return(val);
+}
+
+static void *
+test(void *arg __unused)
+{
+ FTS *fts;
+ FTSENT *p;
+ int ftsoptions, i, n;
+
+ ftsoptions = FTS_PHYSICAL;
+
+ for (;;) {
+ for (i = 0; i < N; i++)
+ r[i] = arc4random();
+ if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
+ err(1, "fts_open");
+
+ i = n = 0;
+ while ((p = fts_read(fts)) != NULL) {
+ if (fd[i] > 0)
+ close(fd[i]);
+ if ((fd[i] = open(p->fts_path, O_RDWR)) == -1)
+ if ((fd[i] = open(p->fts_path, O_WRONLY)) ==
+ -1)
+ continue;
+ if (ftruncate(fd[i], 0) != 0)
+ err(1, "ftruncate");
+ i++;
+ i = i % nitems(fd);
+ }
+
+ if (fts_close(fts) == -1)
+ err(1, "fts_close()");
+ sleep(1);
+ }
+ return(0);
+}
+
+static void *
+calls(void *arg __unused)
+{
+ off_t offset;
+ time_t start;
+ int fd2;
+
+ start = time(NULL);
+ while ((time(NULL) - start) < RUNTIME) {
+ fd2 = makearg() % nitems(fd) + 3;
+ offset = makearg();
+ if (lseek(fd2, offset - 1, SEEK_SET) != -1) {
+ if (write(fd2, "x", 1) != 1)
+ if (errno != EBADF && errno != ENOSPC &&
+ errno != E2BIG && errno != ESTALE &&
+ errno != EFBIG)
+ warn("write");
+ } else
+ if (errno != EBADF)
+ warn("lseek");
+ if (fdatasync(fd2) == -1)
+ if (errno != EBADF)
+ warn("x");
+
+ }
+
+ return (0);
+}
+
+int
+main(int argc, char **argv)
+{
+ struct passwd *pw;
+ pthread_t rp, cp[THREADS];
+ int e, i;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <dir>\n", argv[0]);
+ exit(1);
+ }
+ args[0] = argv[1];
+ args[1] = 0;
+
+ if ((pw = getpwnam("nobody")) == NULL)
+ err(1, "failed to resolve nobody");
+ if (setgroups(1, &pw->pw_gid) ||
+ setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
+ seteuid(pw->pw_uid) || setuid(pw->pw_uid))
+ err(1, "Can't drop privileges to \"nobody\"");
+ endpwent();
+
+ if ((e = pthread_create(&rp, NULL, test, NULL)) != 0)
+ errc(1, e, "pthread_create");
+ usleep(1000);
+ for (i = 0; i < THREADS; i++)
+ if ((e = pthread_create(&cp[i], NULL, calls, NULL)) != 0)
+ errc(1, e, "pthread_create");
+ for (i = 0; i < THREADS; i++)
+ pthread_join(cp[i], NULL);
+
+ return (0);
+}
Added: user/pho/stress2/misc/fdatasync2.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/pho/stress2/misc/fdatasync2.sh Mon Mar 12 21:49:59 2018 (r330816)
@@ -0,0 +1,201 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2018 Dell EMC Isilon
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# fdatasync(2) fuzz. Variation of fdatasync.sh.
+# https://people.freebsd.org/~pho/stress/log/fdatasync2.txt
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+dir=$RUNDIR
+nfiles=10000
+[ `df -i $dir | tail -1 | awk '{print $7}'` -lt $nfiles ] && exit 0
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > fdatasync2.c
+rm -f /tmp/fdatasync2
+mycc -o fdatasync2 -Wall -Wextra -O2 -g fdatasync2.c -lpthread || exit 1
+rm -f fdatasync2.c
+
+mkdir -p $dir && chmod 777 $dir
+
+cd $dir
+jot $nfiles | xargs touch
+jot $nfiles | xargs chmod 666
+cd $odir
+
+(cd /tmp; /tmp/fdatasync2 $dir)
+e=$?
+
+rm -rf $dir/* /tmp/fdatasync2
+exit $e
+EOF
+#include <sys/param.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <libutil.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define N (128 * 1024 / (int)sizeof(u_int32_t))
+#define RUNTIME 180
+#define THREADS 6
+
+static int fd[900];
+static u_int32_t r[N];
+static char *args[2];
+
+static unsigned long
+makearg(void)
+{
+ unsigned long val;
+
+ val = arc4random();
+#if defined(__LP64__)
+ val = (val << 32) | arc4random();
+ val = val & 0x00007fffffffffffUL;
+#endif
+
+ return(val);
+}
+
+static void *
+test(void *arg __unused)
+{
+ FTS *fts;
+ FTSENT *p;
+ int ftsoptions, i, n;
+
+ ftsoptions = FTS_PHYSICAL;
+
+ for (;;) {
+ for (i = 0; i < N; i++)
+ r[i] = arc4random();
+ if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
+ err(1, "fts_open");
+
+ i = n = 0;
+ while ((p = fts_read(fts)) != NULL) {
+ if (fd[i] > 0)
+ close(fd[i]);
+ if ((fd[i] = open(p->fts_path, O_RDWR)) == -1)
+ if ((fd[i] = open(p->fts_path, O_WRONLY)) ==
+ -1)
+ continue;
+ if (ftruncate(fd[i], 0) != 0)
+ err(1, "ftruncate");
+ i++;
+ i = i % nitems(fd);
+ }
+
+ if (fts_close(fts) == -1)
+ err(1, "fts_close()");
+ sleep(1);
+ }
+ return(0);
+}
+
+static void *
+calls(void *arg __unused)
+{
+ off_t offset;
+ time_t start;
+ int fd2;
+
+ start = time(NULL);
+ while ((time(NULL) - start) < RUNTIME) {
+ fd2 = makearg() % nitems(fd) + 3;
+ offset = makearg();
+ if (lseek(fd2, offset - 1, SEEK_SET) != -1) {
+ if (write(fd2, "x", 1) != 1)
+ if (errno != EBADF && errno != ENOSPC &&
+ errno != E2BIG && errno != ESTALE &&
+ errno != EFBIG)
+ warn("write");
+ } else
+ if (errno != EBADF)
+ warn("lseek");
+ if (fdatasync(fd2) == -1)
+ if (errno != EBADF)
+ warn("x");
+
+ }
+
+ return (0);
+}
+
+int
+main(int argc, char **argv)
+{
+ struct passwd *pw;
+ pthread_t rp, cp[THREADS];
+ int e, i, threads;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <dir>\n", argv[0]);
+ exit(1);
+ }
+ args[0] = argv[1];
+ args[1] = 0;
+ threads = arc4random() % (THREADS -1 ) + 2; /* 2 - THREADS */
+
+ if ((pw = getpwnam("nobody")) == NULL)
+ err(1, "failed to resolve nobody");
+ if (setgroups(1, &pw->pw_gid) ||
+ setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
+ seteuid(pw->pw_uid) || setuid(pw->pw_uid))
+ err(1, "Can't drop privileges to \"nobody\"");
+ endpwent();
+
+ if ((e = pthread_create(&rp, NULL, test, NULL)) != 0)
+ errc(1, e, "pthread_create");
+ usleep(1000);
+ for (i = 0; i < threads; i++)
+ if ((e = pthread_create(&cp[i], NULL, calls, NULL)) != 0)
+ errc(1, e, "pthread_create");
+ for (i = 0; i < threads; i++)
+ pthread_join(cp[i], NULL);
+
+ return (0);
+}
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