Re: linux-next: Tree for Mar 14 (mips qemu failure bisected)

[Qais Yousef]

On 16/03/2016 13:22, Guenter Roeck wrote:
> On Tue, Mar 15, 2016 at 05:17:13PM -0700, Guenter Roeck wrote:
> > On Tue, Mar 15, 2016 at 09:55:06PM +0000, Qais Yousef wrote:
> > > Hi Guenter,
> [ ... ]
> > > > > Qemu test results:
> > > > > 	total: 96 pass: 69 fail: 27
> > > > > Failed tests:
> > > > [ ... ]
> > > > > 	mips:mips_malta_smp_defconfig
> > > > I bisected this failure to commit bb11cff327e54 ("MIPS: Make smp CMP, CPS and MT
> > > > use the new generic IPI functions". Bisect log is attached.
> > > Thanks for bisecting this. I tested this on a real Malta system but not
> > > qemu. I'll try to reproduce.
> > I run the tests with only a single CPU core enabled. Maybe that causes
> > problems with your code ?
> I ran another qemu test (this time on mainline) with "-smp 2", but the only
> difference is that the image now gets stuck even earlier.
>
> Also, I ran another set of bisects, this time with both mips and mips64
> on mainline (after your patch landed), with the same results.
>
> Guenter

OK thanks for the info. The offending commit just enables using quite a 
few of the newly added code before that. So the problem could be in any 
of the newly added code.

Unfortunately I can only look at this during my limited time in the 
evening and I have to setup my system to compile and run this, so I 
won't be able to get to the bottom of this as fast as I'd like to.

Qais