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stress2: Added killpg(2) scenarios

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This commit is contained in:
Peter Holm 2023-07-31 09:07:06 +02:00
parent ac0572e660
commit 896809e296
3 changed files with 503 additions and 0 deletions
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197
tools/test/stress2/misc/killpg2.sh Executable file
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#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2023 Peter Holm <pho@FreeBSD.org>
#
# 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.
#
# killpg(2) version of reaper.sh. No problems seen.
. ../default.cfg
prog=$(basename "$0" .sh)
cat > /tmp/$prog.c <<EOF
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static volatile u_int *share;
#define CONT 0
#define GID 1
#define SYNC 2
#define MAXP 10000
static void
hand(int i __unused) {
_exit(0);
}
static void
looper(void)
{
struct sigaction sa;
time_t start;
struct passwd *pw;
pid_t pids[MAXP];
int i, parallel;
setproctitle("looper");
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGUSR1, &sa, NULL) == -1)
err(1, "sigaction");
if ((pw = getpwnam("TUSER")) == NULL)
err(1, "no such user: TUSER");
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 \"TUSER\"");
endpwent();
setpgrp(0, 0);
share[GID] = getpgrp();
share[SYNC] = 1;
start = time(NULL);
while (time(NULL) - start < 120) {
parallel = arc4random() % MAXP + 1;
for (i = 0; i < parallel; i++) {
if ((pids[i] = fork()) == 0) {
sa.sa_handler = hand;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGUSR1, &sa, NULL) == -1)
err(1, "sigaction");
setproctitle("child");
for (;;)
pause();
_exit(0); /* never reached */
}
if (pids[i] == -1)
err(1, "fork()");
}
for (i = 0; i < parallel; i++) {
if (waitpid(pids[i], NULL, 0) != pids[i])
err(1, "waitpid(%d) in looper", pids[i]);
}
}
_exit(0);
}
static void
killer(void)
{
int e, gid;
while (share[SYNC] == 0)
;
gid = share[GID];
while (share[CONT] == 1) {
usleep(arc4random() % 50000);
gid = share[GID];
if (gid != 0) {
e = 0;
while (e == 0) {
if (killpg(gid, SIGUSR1) == -1) {
e = 1;
if (errno != ESRCH)
err(1, "pgkill(%d)", gid);
}
usleep(5000 + arc4random() % 5000);
}
}
}
_exit(0);
}
int
main(void)
{
size_t len;
time_t start;
int lpid, kpid, s1, s2;
len = PAGE_SIZE;
if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
err(1, "mmap");
start = time(NULL);
while (time(NULL) - start < 120) {
share[CONT] = 1;
share[GID] = 0;
share[SYNC] = 0;
if ((lpid = fork()) == 0)
looper();
usleep(arc4random() % 100000);
if ((kpid = fork()) == 0)
killer();
if (waitpid(lpid, &s1, 0) != lpid)
err(1, "waitpid looper");
usleep(arc4random() % 1000);
share[CONT] = 0;
waitpid(kpid, &s2, 0);
}
return (0);
}
EOF
sed -i '' "s#TUSER#$testuser#" /tmp/$prog.c
cc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c || exit 1
rm /tmp/$prog.c
n=1
start=`date +%s`
while true; do
/tmp/$prog
for i in `jot 50`; do
pgrep -q $prog || break
sleep .5
done
if pgrep -q $prog; then
e=$((`date +%s` - start))
echo "Failed in loop #$n after $e seconds."
pgrep "$prog|timeout" | xargs ps -jp
pkill $prog
rm -f /tmp/$prog
exit 1
fi
[ $((`date +%s` - start)) -ge 600 ] && break
n=$((n + 1))
done
rm /tmp/$prog
exit 0

192
tools/test/stress2/misc/killpg3.sh Executable file
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#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2023 Peter Holm <pho@FreeBSD.org>
#
# 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.
#
# killpg(2) version of reaper.sh. No problems seen.
. ../default.cfg
prog=$(basename "$0" .sh)
cat > /tmp/$prog.c <<EOF
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <pwd.h>
#include <signal.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static _Atomic(int) *share;
#define GID 0
#define PARALLEL 10
#define RDY 1
#define MAXP 7000
static void
hand(int i __unused) {
_exit(0);
}
static void
innerloop(int parallel)
{
pid_t pids[MAXP];
struct sigaction sa;
int i;
usleep(1000);
for (i = 0; i < parallel; i++) {
if ((pids[i] = fork()) == 0) {
sa.sa_handler = hand;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGUSR1, &sa, NULL) == -1)
err(1, "sigaction");
atomic_fetch_add(&share[RDY], 1);
setproctitle("child");
for (;;)
pause();
_exit(0); /* never reached */
}
if (pids[i] == -1)
err(1, "fork()");
}
for (i = 0; i < parallel; i++) {
if (waitpid(pids[i], NULL, 0) != pids[i])
err(1, "waitpid(%d) in looper", pids[i]);
}
_exit(0);
}
static void
looper(void)
{
struct sigaction sa;
struct passwd *pw;
pid_t pids[MAXP];
int i, parallel;
setproctitle("looper");
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGUSR1, &sa, NULL) == -1)
err(1, "sigaction");
if ((pw = getpwnam("TUSER")) == NULL)
err(1, "no such user: TUSER");
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 \"TUSER\"");
endpwent();
setpgrp(0, 0);
share[GID] = getpgrp();
parallel = arc4random() % MAXP + 1;
parallel = parallel / PARALLEL * PARALLEL;
for (i = 0; i < PARALLEL; i++) {
if ((pids[i] = fork()) == 0)
innerloop(parallel / PARALLEL);
}
while (atomic_load(&share[RDY]) != parallel)
usleep(10000);
if (killpg(share[GID], SIGUSR1) == -1)
err(1, "pgkill(%d)", share[GID]);
for (i = 0; i < 4; i++) {
if (waitpid(pids[i], NULL, 0) != pids[i])
err(1, "waitpid(%d) in looper", pids[i]);
}
_exit(0);
}
int
main(void)
{
size_t len;
time_t start;
int lpid, s1;
len = PAGE_SIZE;
if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
err(1, "mmap");
start = time(NULL);
while (time(NULL) - start < 120) {
share[GID] = 0;
share[RDY] = 0;
if ((lpid = fork()) == 0)
looper();
if (waitpid(lpid, &s1, 0) != lpid)
err(1, "waitpid looper");
}
return (0);
}
EOF
sed -i '' "s#TUSER#$testuser#" /tmp/$prog.c
mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c || exit 1
rm /tmp/$prog.c
export MAXSWAPPCT=70
n=1
start=`date +%s`
while true; do
../testcases/swap/swap -t 2m -i 20 > /dev/null &
/tmp/$prog & pid=$!
st=`date +%s`
while kill -0 $pid > /dev/null 2>&1; do
e=$((`date +%s` - st))
if [ $e -ge 120 ]; then
while pgrep -q swap; do pkill swap; done
fi
if [ $e -ge 600 ]; then
echo "Failed in loop #$n after $e seconds."
ps -jU$testuser | head -20
kill $pid
pkill -U$testuser
wait
rm -f /tmp/$prog
exit 1
fi
done
wait
[ $((`date +%s` - start)) -ge 300 ] && break
n=$((n + 1))
done
rm /tmp/$prog
exit 0

114
tools/test/stress2/misc/killpg4.sh Executable file
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@ -0,0 +1,114 @@
#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2023 Peter Holm <pho@FreeBSD.org>
#
# 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.
#
# Another killpg(2) test scenario. No problems seen.
. ../default.cfg
export prog=$(basename "$0" .sh)
set -u
cat > /tmp/$prog.c <<EOF
#include <sys/wait.h>
#include <err.h>
#include <time.h>
#include <stdlib.h>
#include <unistd.h>
#define PARALLEL 2
int
test(void)
{
pid_t pid;
time_t start;
start = time(NULL);
while (time(NULL) - start < 300) {
if ((pid = fork()) == -1)
err(1, "fork()");
if (pid == 0) {
if (arc4random() % 100 < 20)
usleep(arc4random() % 5000);
_exit(0); /* Not reached */
}
if (waitpid(pid, NULL, 0) != pid)
err(1, "waitpid()");
}
_exit(0);
}
int
main(void)
{
pid_t pids[PARALLEL];
int i;
for (i = 0; i < PARALLEL; i++) {
test();
}
for (i = 0; i < PARALLEL; i++) {
if (waitpid(pids[i], NULL, 0) != pids[i])
err(1, "waotpid() main");
}
}
EOF
mycc -o /tmp/$prog -Wall -Wextra -O2 /tmp/$prog.c || exit 1
export MAXSWAPPCT=80
../testcases/swap/swap -t 2m -i 5 > /dev/null 2>&1 &
sleep .5
start=`date +%s`
while [ $((`date +%s` - start)) -lt 120 ]; do
for i in `jot 200 100`; do
(
sl=$prog.$i
sleep=/tmp/$sl
cp /tmp/$prog $sleep
su $testuser -c "$sleep & $sleep & $sleep &" & pid=$!
for j in `jot 10`; do
pgrep -q "$sl" && break
sleep .5
done
pgrep -q "$sl" || { echo "No start"; exit 1; }
pgid=`pgrep "$sl" | xargs ps -jp | sed 1d | \
tail -1 | awk '{print $4}'`
[ -z "$pgid" ] && { echo "Zero pgid:$pgid"; ps aj | \
sed -n "1p;/$sl/p"; exit 1; }
sleep 1.`jot -r 1 2 9`
kill -- -$pgid || { echo "kill -$pgid failed"; exit 1; }
wait $pid
rm -f $sleep
) &
done
while [ `ps -U$testuser | wc -l` -gt 1 ] ; do sleep 2; done
done
while pkill swap; do :; done
wait
rm /tmp/$prog /tmp/$prog.c
exit 0