Re: NOHZ: local_softirq_pending 08

Dave Young
2009-10-11T10:56:19Z

On Sun, Oct 11, 2009 at 6:08 PM, Johannes Berg
<johannes@sipsolutions.net> wrote:
> On Sun, 2009-10-11 at 17:52 +0800, Dave Young wrote:
>
>> With kernel 2.6.32-rc3-00052-g0eca52a I got following KERN_ERR
>> messages just while using firefox:
>>
>> [  130.527399] NOHZ: local_softirq_pending 08
>
>> Any idea? or known issue?
>
> Are you using b43 (or wl12x1)? If so, it's a known issue, but the driver
> was recently left without an active maintainer in a brouhaha about a bug
> fix.

Yes, I'm using b43. I will test the patch you posted in another thread.

>
> Cf. http://thread.gmane.org/gmane.linux.kernel.wireless.general/39440
>
> Absent proof that mac80211 is safe to run with BHs enabled, the correct
> solution is disabling tasklets around the RX function, unlike all the
> proposed patches. However, Michael thinks it's such a bad solution that
> he has refused to implement it. So far, nobody has bothered to fix the
> drivers.
>
> FWIW, I believe the bug to be in b43 and wl12x1, and not as Michael
> thinks in the stack.
>
> johannes
>
>

--
Regards
dave