Re: reproducable panic eviction work queue

With attachment this time, also not sure wether this is what you were referring to, so let me know if anything else needed!

- Johan

On 18 Jul 2015, at 17:28, Johan Schuijt-Li [off-list ref] wrote:

Thx for your looking into this!

quoted

Thank you for the report, I will try to reproduce this locally
Could you please post the full crash log ?

Of course, please see attached file.

quoted

Also could you test
with a clean current kernel from Linus' tree or Dave's -net ?

Will do.

quoted

These are available at:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
respectively.

One last question how many IRQs do you pin i.e. how many cores
do you actively use for receive ?

This varies a bit across our systems, but we’ve managed to reproduce this with IRQs pinned on as many as 2,4,8 or 20 cores.

I won’t have access to our test-setup till Monday again, so I’ll be testing 3 scenario’s then:
- Your patch
- Linux tree
- Dave’s -net tree

I’ll make sure to keep you posted on all the results then. We have a kernel dump of the panic, so if you need me to extract any data from there just let me know! (Some instructions might be needed)

- Johan