MIME-Version: 1.0
In-Reply-To: <CAMiJ5CV--EFGnZSvJcrUrYVjy1PWueCQq5i5D+i0=p9BArPnjw@mail.gmail.com>
References: <CAMiJ5CX5Ub66mQiVGwwq+PqV5Hf1Aoz2pdsSLSMKH7vJYuhSzg@mail.gmail.com>
	<CA+55aFxbtyciJwhgaLMK7XH8MyQ9Nm4=5Ke-QCo3WOaacegLXw@mail.gmail.com>
	<CA+55aFyGkOCVGD3Ds7Wt1z9Dw7cmk_yXw7YwruACQh5QAXOQvQ@mail.gmail.com>
	<CA+55aFz492bzLFhdbKN-Hygjcreup7CjMEYk3nTSfRWjppz-OA@mail.gmail.com>
	<20150218222544.GA17717@twins.programming.kicks-ass.net>
	<CAMiJ5CV--EFGnZSvJcrUrYVjy1PWueCQq5i5D+i0=p9BArPnjw@mail.gmail.com>
Date: Thu, 19 Feb 2015 08:14:46 -0800
Message-ID: <CA+55aFwkcsWQAHOh-xjArGBvoBdD=_WFV4ANJjdzO_dOu5WBXw@mail.gmail.com>
Subject: Re: smp_call_function_single lockups
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Rafael David Tinoco <inaddy@ubuntu.com>
Cc: Peter Zijlstra <peterz@infradead.org>, LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Jens Axboe <axboe@kernel.dk>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Gema Gomez <gema.gomez-solano@canonical.com>,
        chris.j.arges@canonical.com
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 943
Lines: 21

On Thu, Feb 19, 2015 at 7:42 AM, Rafael David Tinoco <inaddy@ubuntu.com> wrote:
>
> Just a quick feedback, We were able to reproduce the lockup with this
> proposed patch (3.19 + patch). Unfortunately we had problems with the
> core file and I have only the stack trace for now but I think we are
> able to reproduce it again and provide more details (sorry for the
> delay... after a reboot it took some days for us to reproduce this
> again).
>
> It looks like RIP is still smp_call_function_single.

Hmm. Still just the stack trace for the CPU that is blocked (CPU0), if
you can get the core-file to work and figure out where the other CPU
is, that would be good.

                        Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/