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Thu, 11 Aug 2022 07:43:06 GMT (envelope-from git) Date: Thu, 11 Aug 2022 07:43:06 GMT Message-Id: <202208110743.27B7h6Kp048700@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Peter Holm Subject: git: 64f923959a8a - main - stress2: Added a regression test List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: pho X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 64f923959a8abd963954ff67f3fc159b2d4826c8 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1660203786; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; 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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. +# + +# Regression test for D36069 +# thread_create(): call cpu_copy_thread() after td_pflags is zeroed + +# Seen before fix: +# cc: error: unable to execute command: Segmentation fault (core dumped) +# cc: error: linker command failed due to signal (use -v to see invocation) +# Aug 9 18:27:47 freebsd-vm kernel: pid 32094 (ld.lld), jid 0, uid 0: exited on signal 11 (core dumped) + +. ../default.cfg +[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/fork2.c +mycc -o fork2 -Wall -Wextra -O0 -g fork2.c || exit 1 +cd $odir + +set -e +mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint +[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart +mdconfig -a -t swap -s 2g -u $mdstart +bsdlabel -w md$mdstart auto +newfs $newfs_flags md${mdstart}$part > /dev/null +mount /dev/md${mdstart}$part $mntpoint +set +e + +cd $mntpoint +$dir/fork2 +s=$? +pkill fork2 +[ -f fork2.core -a $s -eq 0 ] && + { ls -l fork2.core; mv fork2.core $dir; s=1; } +cd $odir + +for i in `jot 6`; do + mount | grep -q "on $mntpoint " || break + umount $mntpoint && break || sleep 10 + [ $i -eq 6 ] && + { echo FATAL; fstat -mf $mntpoint; exit 1; } +done +mdconfig -d -u $mdstart +cd $dir +mycc -o $dir/fork2 -Wall -Wextra -O0 -g $dir/fork2.c; s=$? +rm -rf $dir/fork2 $dir/fork2.c +exit $s + +EOF +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +static volatile u_int *share; + +#define MX 5000 +#define RUNTIME (1 * 60) +#define SYNC 0 + +int +main(void) +{ + pid_t pid; + size_t len; + time_t start; + int n; + + len = PAGE_SIZE; + if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + + n = 0; + signal(SIGCHLD, SIG_IGN); + start = time(NULL); + while ((time(NULL) - start) < RUNTIME) { + while ((atomic_load_int(&share[SYNC])) > MX) + usleep(100); + n++; + pid = fork(); + if (pid == -1) + err(1, "fork)"); + if (pid == 0) { + atomic_add_int(&share[SYNC], 1); + while (atomic_load_int(&share[SYNC]) <= MX) + usleep(10000); + usleep(arc4random() % 1000); + atomic_add_int(&share[SYNC], -1); + raise(SIGHUP); + _exit(0); + } + } + atomic_add_int(&share[SYNC], MX * 2); + fprintf(stderr, "%d fork() calls\n", n); +}