From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Mon, 08 Dec 2003 23:33:54 +0000 Subject: Re: q-tools OOPS Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Tue, 9 Dec 2003 09:46:18 +1100, Peter Chubb said: Peter> Hi David, Peter> Dunno what's going on here. I've built q-tools against libpfm3.0 Peter> and libc 2.3.2.ds1-10.0.1 from Debian using gcc 3.2.3. Sounds fine. Peter> When run on a vanilla 2.6.0-test11 kernel, I either get no output, or Peter> an OOPS. stracing q-syscollect always shows a SEGV in the child Peter> processes, but I think that may be an strace bug. Peter> I guess that this *could* be a preemption problem; have you run Peter> q-syscollect on a machine with CONFIG_PREEMPT on? Nope, I definitely haven't tried CONFIG_PREEMPT. It's obviously a kernel bug, since q-syscollect doesn't do anything nasty---it's a pure user-level program. Can you try without CONFIG_PREEMPT? --david