Module Name: src
Committed By: pooka
Date: Mon Aug 2 10:29:48 UTC 2010
Modified Files:
src/tests/kernel: Makefile
Added Files:
src/tests/kernel: t_filedesc.c
Log Message:
test case for PR kern/43694
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/tests/kernel/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/kernel/t_filedesc.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/kernel/Makefile
diff -u src/tests/kernel/Makefile:1.7 src/tests/kernel/Makefile:1.8
--- src/tests/kernel/Makefile:1.7 Wed Jul 14 21:47:06 2010
+++ src/tests/kernel/Makefile Mon Aug 2 10:29:48 2010
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.7 2010/07/14 21:47:06 jmmv Exp $
+# $NetBSD: Makefile,v 1.8 2010/08/02 10:29:48 pooka Exp $
NOMAN= # defined
@@ -20,10 +20,12 @@
TESTS_C+= t_writev
TESTS_C+= t_extattrctl
TESTS_C+= t_sigaction
+TESTS_C+= t_filedesc
TESTS_SH= t_umount
LDADD.t_rnd+= -lrumpvfs -lrumpdev_rnd -lrumpdev -lrump -lrumpuser -lpthread
+LDADD.t_filedesc+= -lrumpvfs -lrumpdev_rnd -lrumpdev -lrump -lrumpuser -lpthread
LDADD.t_extattrctl+= -lrumpvfs -lrump -lrumpuser -lpthread
.PATH: ${NETBSDSRCDIR}/sys/kern
Added files:
Index: src/tests/kernel/t_filedesc.c
diff -u /dev/null src/tests/kernel/t_filedesc.c:1.1
--- /dev/null Mon Aug 2 10:29:48 2010
+++ src/tests/kernel/t_filedesc.c Mon Aug 2 10:29:48 2010
@@ -0,0 +1,111 @@
+/* $NetBSD: t_filedesc.c,v 1.1 2010/08/02 10:29:48 pooka Exp $ */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_filedesc.c,v 1.1 2010/08/02 10:29:48 pooka Exp $");
+
+#include <sys/types.h>
+
+#include <assert.h>
+#include <atf-c.h>
+#include <fcntl.h>
+#include <stdlib.h>
+
+#include <rump/rump.h>
+#include <rump/rump_syscalls.h>
+
+#include "../h_macros.h"
+
+ATF_TC(getfilerace);
+ATF_TC_HEAD(getfilerace, tc)
+{
+
+ atf_tc_set_md_var(tc, "descr", "race between multithreaded proc. "
+ "fd_getfile() and fd_close()");
+}
+
+static int fd;
+static volatile bool quit;
+
+static void *
+wrkwrk(void *arg)
+{
+
+ /* just something to cause fd_getfile() to be called */
+ while (!quit)
+ rump_sys_write(fd, &fd, sizeof(fd));
+
+ return NULL;
+}
+
+/* for me, 1000 triggers extremely seldom, 10k sometimes, 100k almost always */
+#define DEFAULT_ITERATIONS 10000
+
+ATF_TC_BODY(getfilerace, tc)
+{
+ pthread_t pt;
+ int fd_wrk;
+ int i, iters;
+
+ /*
+ * Want a multiprocessor virtual kernel. A multiprocessor host
+ * probably helps too, but that's harder to do in software...
+ */
+ setenv("RUMP_NCPU", "2", 1);
+ rump_init();
+
+ fd = fd_wrk = rump_sys_open("/dev/null", O_RDWR, 0);
+ if (fd == -1)
+ atf_tc_fail_errno("cannot open /dev/null");
+
+ if (atf_tc_has_config_var(tc, "iters"))
+ iters = atoi(atf_tc_get_config_var(tc, "iters"));
+ else
+ iters = DEFAULT_ITERATIONS;
+
+ pthread_create(&pt, NULL, wrkwrk, NULL);
+ atf_tc_expect_signal(-1, "PR kern/43694");
+ for (i = 0; i < iters; i++) {
+ rump_sys_close(fd_wrk);
+ fd_wrk = rump_sys_open("/dev/null", O_RDWR, 0);
+ assert(fd == fd_wrk);
+ }
+
+ quit = true;
+ pthread_join(pt, NULL);
+
+ /* XXX: ridiculous */
+ abort();
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+ ATF_TP_ADD_TC(tp, getfilerace);
+
+ return atf_no_error();
+}
