[dpdk-dev] [4.4 kernel] kni lockup, kernel dump

[ALeX Wang]

Thx, Ferruh and Thomas for the confirmation and pointer!

On 14 April 2016 at 07:43, Thomas Monjalon <thomas.monjalon at 6wind.com>
wrote:

> 2016-04-14 15:29, Ferruh Yigit:
> > On 4/13/2016 11:26 PM, ALeX Wang wrote:
> > > Did more experiment, found that it has nothing to do with the kernel
> > > version,
> > >
> > > It only happens when using kni module with '--no-huge' eal flag...
> > >
> > > Is that expected?
> > >
> >
> > Yes.
> > KNI kernel module expects mempool is physically continuous, with
> > '--no-huge' flag this is no more true, and as a result KNI module can
> > access to incorrect address.
>
> This is a bug.
> The memory API should allow to explicit this restriction and return
> an error if it cannot offer the requested continuous memory.
> See this thread for discussion:
>         http://dpdk.org/ml/archives/dev/2016-April/037444.html
>



-- 
Alex Wang,
Open vSwitch developer