Re: [PATCH 4.18 050/123] mm/tlb, x86/mm: Support invalidating TLB caches for RCU_TABLE_FREE

[Andre Tomt]

On 04. sep. 2018 08:10, Andre Tomt wrote:
> On 04. sep. 2018 07:24, Greg Kroah-Hartman wrote:
> > > Full test log link,
> > > https://lkft.validation.linaro.org/scheduler/job/404027#L4051
> >
> > Does Linus's tree also crash with this patch applied? Being "bug
> > compatible" is good :)
> >
> > thanks,
> >
> > greg k-h
>
> I suspect it is because we're missing upstream commit 
> db7ddef301128dad394f1c0f77027f86ee9a4edb
> mm: move tlb_table_flush to tlb_flush_mmu_free
>
> Have not tested.

Tested it now. Adding this commit to my local 4.18.6-rc1 based tree 
fixes the crashing on my systems.

On 4.18.6-rc1 they would fall over within seconds of getting to the 
login prompt.