From owner-svn-src-user@freebsd.org Sat Feb 29 09:18:43 2020 Return-Path: Delivered-To: svn-src-user@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1EE42259AFC for ; Sat, 29 Feb 2020 09:18:43 +0000 (UTC) (envelope-from pho@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48V16p5kYZz4f7D; Sat, 29 Feb 2020 09:18:42 +0000 (UTC) (envelope-from pho@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9F0B918879; Sat, 29 Feb 2020 09:18:42 +0000 (UTC) (envelope-from pho@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 01T9Ig7w003393; Sat, 29 Feb 2020 09:18:42 GMT (envelope-from pho@FreeBSD.org) Received: (from pho@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 01T9IgAo003391; Sat, 29 Feb 2020 09:18:42 GMT (envelope-from pho@FreeBSD.org) Message-Id: <202002290918.01T9IgAo003391@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: pho set sender to pho@FreeBSD.org using -f From: Peter Holm Date: Sat, 29 Feb 2020 09:18:42 +0000 (UTC) To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r358456 - user/pho/stress2/misc X-SVN-Group: user X-SVN-Commit-Author: pho X-SVN-Commit-Paths: user/pho/stress2/misc X-SVN-Commit-Revision: 358456 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-user@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the experimental " user" src tree" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Feb 2020 09:18:43 -0000 Author: pho Date: Sat Feb 29 09:18:41 2020 New Revision: 358456 URL: https://svnweb.freebsd.org/changeset/base/358456 Log: Added regressions tests for dtrace/systrace. Added: user/pho/stress2/misc/systrace.sh (contents, props changed) user/pho/stress2/misc/systrace2.sh (contents, props changed) Added: user/pho/stress2/misc/systrace.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/systrace.sh Sat Feb 29 09:18:41 2020 (r358456) @@ -0,0 +1,64 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2020 Peter Holm +# +# 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. +# +# $FreeBSD$ +# + +# 20200224 13:05:04 all (1/1): systrace.sh +# [ thread pid 64171 tid 100708 ] +# Stopped at sdt_modevent+0x1c1: int $3 +# db> + +# markj@ wrote: +# I think I see the problem now. It should happen if you: +# 1. load systrace.ko +# 2. enable some system call probes, and disable them again +# 3. unload systrace.ko +# 4. load some unrelated module +# 5. goto 1 +# +# In particular, if systrace.ko is loaded at different addresses each +# time, we'll end up calling a stale function pointer. + +# https://people.freebsd.org/~pho/stress/log/mark137.txt + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +. ../default.cfg + +dtrace -n 'dtrace:::BEGIN { exit(0); }' > /dev/null 2>&1 || exit 0 +for i in `jot 2`; do + sleep 4 & pid=$! + dtrace -w -n 'syscall::*read:entry,syscall::*write:entry {\ + @rw[execname,probefunc] = count(); }' -p $pid > /dev/null 2>&1 + wait $pid + kldstat | grep -q dtraceall.ko && kldunload dtraceall.ko + + mount -t tmpfs dummy $mntpoint && umount $mntpoint +done +kldstat | grep -q tmpfs && kldunload tmpfs.ko +exit 0 Added: user/pho/stress2/misc/systrace2.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/systrace2.sh Sat Feb 29 09:18:41 2020 (r358456) @@ -0,0 +1,50 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2020 Peter Holm +# +# 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. +# +# $FreeBSD$ +# + +# A variation of systrace.sh +# "Fatal trap 12: page fault while in kernel mode" seen: +# https://people.freebsd.org/~pho/stress/log/mark142.txt + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +. ../default.cfg +dtrace -n 'dtrace:::BEGIN { exit(0); }' > /dev/null 2>&1 || exit 0 + +echo "gvim or top should be running at this point" +for i in `jot 2`; do + sleep 4 & pid=$! + dtrace -w -n 'fbt::kern_ioctl:entry {\ + @io[execname,probefunc] = count(); }' -p $pid > /dev/null 2>&1 + wait $pid + kldstat | grep -q dtraceall.ko && kldunload dtraceall.ko + mount -t tmpfs dummy $mntpoint && umount $mntpoint +done +kldstat | grep -q tmpfs && kldunload tmpfs.ko +exit 0