From: Peter Zijlstra <peterz@infradead.org>
To: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
Nick Piggin <npiggin@suse.de>, akpm <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: irq-disabled vs vmap vs text_poke
Date: Fri, 13 Feb 2009 17:38:21 +0100 [thread overview]
Message-ID: <1234543101.6519.147.camel@twins> (raw)
In-Reply-To: <4995A0B7.1030705@redhat.com>
On Fri, 2009-02-13 at 11:32 -0500, Masami Hiramatsu wrote:
> >> Anybody got an idea on how to fix this?
> >
> > There is probably something wrong with the caller, kprobes, which calls
> > text_poke with interrupts off.
>
> Hmm, kprobe's smoke test caused this problem. Since (un)register_kprobe()
> may sleep for waiting a mutex, it should not be called with interrupts off.
> So, it's not text_poke()'s issue nor vmap().
Yeah, since noticed that, trying to figure out where the irq-disable
came from.. somewhat mysterious.
next prev parent reply other threads:[~2009-02-13 16:36 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-13 12:50 irq-disabled vs vmap vs text_poke Peter Zijlstra
2009-02-13 12:55 ` Nick Piggin
2009-02-13 13:02 ` Peter Zijlstra
2009-02-13 13:04 ` Ingo Molnar
2009-02-13 14:25 ` Mathieu Desnoyers
2009-02-13 14:33 ` Peter Zijlstra
2009-02-13 14:43 ` Mathieu Desnoyers
2009-02-13 18:05 ` Ingo Molnar
2009-02-13 13:05 ` Peter Zijlstra
2009-02-13 13:09 ` Nick Piggin
2009-02-13 14:18 ` Mathieu Desnoyers
2009-02-13 14:28 ` Peter Zijlstra
2009-02-13 16:32 ` Masami Hiramatsu
2009-02-13 16:38 ` Peter Zijlstra [this message]
2009-02-13 16:55 ` Mathieu Desnoyers
2009-02-13 18:14 ` Masami Hiramatsu
2009-02-13 18:57 ` Mathieu Desnoyers
2009-02-13 21:41 ` Masami Hiramatsu
2009-02-16 15:04 ` Masami Hiramatsu
2009-02-16 15:31 ` Nick Piggin
2009-02-16 17:24 ` Mathieu Desnoyers
2009-02-17 2:00 ` Masami Hiramatsu
2009-02-17 3:03 ` Nick Piggin
2009-02-17 8:31 ` Peter Zijlstra
2009-02-17 17:13 ` Masami Hiramatsu
2009-02-17 16:48 ` Masami Hiramatsu
2009-02-17 17:02 ` Steven Rostedt
2009-02-17 17:18 ` Mathieu Desnoyers
2009-02-17 17:24 ` Steven Rostedt
2009-02-17 17:28 ` Mathieu Desnoyers
2009-02-17 17:48 ` Steven Rostedt
2009-02-13 14:27 ` [PATCH] x86: text_poke might sleep Mathieu Desnoyers
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