[systemd-devel] [PATCH] avoid race condition in pick_next_task_fair in kernel/sched_fair.c

[wu zhangjin]

On Mon, Dec 27, 2010 at 3:26 PM, fykcee1 at gmail.com <fykcee1 at gmail.com> wrote:
> Just mention it, Peter wrote a
> patch(https://groups.google.com/d/msg/linux-kernel-proxy/-eAPuf_OcmI/mD81JdSzxckJ),
> and it works for me.

does the old kernel versions need this patch?

Regards,
Wu Zhangjin

>
> 2010/12/23 fykcee1 at gmail.com <fykcee1 at gmail.com>
>>
>> Hi all,
>> I encountered kernel panic with systemd too, but not sure is related with
>> this thread. The Call Trace mentions
>> pick_next_task_fair: http://dev.lemote.com/files/upload/people/~chenj/systemd-crash/DSC00163.JPG
>> It was a debian sequeeze installed a vanilla kernel 2.6.36.2 and systemd
>> (v15 with sysv-compat disabled), running on Fuloong 2f
>> box(http://www.linux-mips.org/wiki/Fuloong). When start up finished, I
>> pressed a key, then kernel panic. It was not produceable each time.
>> ----
>>
>> config: http://dev.lemote.com/files/upload/people/~chenj/systemd-crash/config-2.6.36.2
>>
>> systemd-debs: http://dev.lemote.com/files/upload/people/~chenj/systemd-crash/debs/
>> Howto deploy systemd on
>> debian: http://dev.lemote.com/files/upload/people/~chenj/systemd-crash/README
>>
>> 2010/12/22 Mike Galbraith <efault at gmx.de>
>>>
>>> On Wed, 2010-12-22 at 09:29 +0100, Peter Zijlstra wrote:
>>> > On Wed, 2010-12-22 at 01:22 +0100, Miklos Vajna wrote:
>>> > > Please let me know if you need more info.
>>> >
>>> > What distro are you using? it looks like systemd is involved and I'm
>>> > actively avoiding anything using that crap.
>>>
>>> Heh, gearing up to hunt a bug it triggers, just doing all I had to do to
>>> get the thing built and installed blew my box _all up_.  I still have
>>> smoldering bits lying about a week later.
>>>
>>>        -Mike
>>>
>>> _______________________________________________
>>> systemd-devel mailing list
>>> systemd-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/systemd-devel
>>
>>
>>
>> --
>> Regards,
>> - cee1
>
>
>
> --
> Regards,
> - cee1
>