From: Steven Rostedt <rostedt@goodmis.org>
To: "Jörg Sommer" <joerg@alea.gnuu.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org
Subject: Re: Oops in trace_hardirqs_on (powerpc)
Date: Mon, 27 Sep 2010 21:58:14 -0400 [thread overview]
Message-ID: <1285639094.2989.1.camel@frodo> (raw)
In-Reply-To: <20100927125037.GA4497@alea.gnuu.de>
On Mon, 2010-09-27 at 14:50 +0200, Jörg Sommer wrote:
> Hello Steven,
>
> Steven Rostedt hat am Wed 22. Sep, 15:44 (-0400) geschrieben:
> > Sorry for the late reply, but I was on vacation when you sent this, and
> > I missed it while going through email.
> >
> > Do you still have this issue?
>
> No. I've rebuild my kernel without TRACE_IRQFLAGS and the problem
> vanished, as expected. The problem is, that in some cases the stack is
> only two frames deep, which causes the macro CALLER_ADDR1 makes an
> invalid access. Someone told me, there a workaround for the problem on
> i386, too.
>
> % sed -n 2p arch/x86/lib/thunk_32.S
> * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)
Yes, I remember that problem. When I get back from Tokyo, I'll tried to
remember to fix it.
Thanks!
-- Steve
next prev parent reply other threads:[~2010-09-28 1:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100806233157.GA7117@alea.gnuu.de>
2010-09-22 19:44 ` Oops in trace_hardirqs_on (powerpc) Steven Rostedt
2010-09-27 12:50 ` Jörg Sommer
2010-09-28 1:58 ` Steven Rostedt [this message]
2010-12-19 13:27 ` Jörg Sommer
2010-12-20 20:43 ` Steven Rostedt
2010-12-20 21:12 ` Steven Rostedt
2010-12-23 2:42 ` Steven Rostedt
2010-12-26 0:30 ` Jörg Sommer
2011-01-21 0:46 ` Steven Rostedt
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