Re: [RFC PATCH 0/3] irq: Fix stack overflow due to softirq called on current stack

Frederic Weisbecker
2013-09-19T15:38:44Z

2013/9/18 Paul Mackerras <paulus@samba.org>:
> Frederic,
>
> On Thu, Sep 05, 2013 at 05:33:21PM +0200, Frederic Weisbecker wrote:
>>
>> This series is a proposition to fix the crash reported here: http://lkml.kernel.org/r/1378330796.4321.50.camel%40pasglop
>> And it has the upside to also consolidate a bit the arch do_softirq overriden implementation.
>
> I tried this series on a ppc64 machine running KVM guests and doing
> network traffic, while under memory pressure, and it seems to work
> fine. Although the original problem was never completely
> deterministically reproducible, the problem did originally show up
> with the combination of memory pressure, network traffic and KVM
> guests. I pushed the test machine moderately hard for a while and
> there was no sign of stack overflow. So:
>
> Tested-by: Paul Mackerras <paulus@samba.org>

Thanks!

>
> Are you going to push this upstream?

Yeah I'll prepare a pull request and let Thomas decide about the fate
of these patches.

Thanks!