svn commit: r321654 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Jul 28 17:10:19 2017
New Revision: 321654
URL: https://svnweb.freebsd.org/changeset/base/321654

Log:
  Added a regression test.
  
  Sponsored by:	Dell EMC Isilon

Added:
  user/pho/stress2/misc/kevent10.sh   (contents, props changed)

Added: user/pho/stress2/misc/kevent10.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/kevent10.sh	Fri Jul 28 17:10:19 2017	(r321654)
@@ -0,0 +1,68 @@
+#!/bin/sh
+
+# Regression test for
+# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217435
+# by Tim Newsham <tim newsham nccgroup trust>
+
+# panic: Assertion size > 0 failed at ../../../kern/subr_vmem.c:1082
+# cpuid = 2
+# time = 1501182301
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0173117650
+# vpanic() at vpanic+0x19c/frame 0xfffffe01731176d0
+# kassert_panic() at kassert_panic+0x126/frame 0xfffffe0173117740
+# vmem_alloc() at vmem_alloc+0x11b/frame 0xfffffe0173117780
+# kmem_malloc() at kmem_malloc+0x33/frame 0xfffffe01731177b0
+# uma_large_malloc() at uma_large_malloc+0x48/frame 0xfffffe01731177f0
+# malloc() at malloc+0xe3/frame 0xfffffe0173117840
+# ktrgenio() at ktrgenio+0x60/frame 0xfffffe0173117880
+# sys_kevent() at sys_kevent+0x12f/frame 0xfffffe0173117930
+# amd64_syscall() at amd64_syscall+0x7d2/frame 0xfffffe0173117ab0
+
+# Fixed by r315155.
+
+. ../default.cfg
+
+cat > /tmp/kevent10.c <<EOF
+#include <sys/param.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/ktrace.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	char *fn = "/tmp/trace";
+	struct kevent changes;
+	struct kevent events;
+
+	if (open(fn, O_RDWR | O_CREAT, 0666) == -1)
+		err(1, "%s", fn);
+	if (ktrace(fn, KTRFLAG_DESCEND | KTROP_SET, KTRFAC_GENIO, 0) == -1)
+		err(1, "ktrace");
+	memset(&changes, 0, sizeof(struct kevent));
+	memset(&events, 0, sizeof(struct kevent));
+	if (kevent(0, &changes, -1, &events, 1, 0) == -1)
+		if (errno != EBADF)
+			err(1, "kevent");
+	return (0);
+}
+EOF
+
+mycc -o /tmp/kevent10 -Wall -Wextra -O2 /tmp/kevent10.c || exit 1
+rm /tmp/kevent10.c
+
+/tmp/kevent10
+s=$?
+
+rm /tmp/kevent10
+exit $s