From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11704 invoked by alias); 6 Nov 2011 17:39:53 -0000 Received: (qmail 11434 invoked by uid 22791); 6 Nov 2011 17:39:52 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 06 Nov 2011 17:39:40 +0000 From: "fche at redhat dot com" To: systemtap@sourceware.org Subject: [Bug testsuite/13193] Running bz6503.exp results in unresponsive/crashed machine Date: Sun, 06 Nov 2011 17:39:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: testsuite X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: fche at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2011-q4/txt/msg00149.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=13193 --- Comment #4 from Frank Ch. Eigler 2011-11-06 17:22:37 UTC --- With echo 0 > /proc/sys/debug/kprobes-optimization, the test, executed in a tight loop with even the "sleep 3;" part removed from bz6503.exp, runs fine for hours. # while true; do make installcheck RUNTESTFLAGS=bz6503.exp; done With echo 1, the test loop fails within a minute or two, on this VM: Linux vm-f15-64 2.6.40.6-0.fc15.x86_64 #1 SMP Tue Oct 4 00:39:50 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux 2 VCPU, 2GB RAM. I strongly suspect this is a kernel bug that we'll just have to work around somehow, perhaps by teaching staprun to turn off kprobes optimization. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.