Re: [PATCH] mm: fix up a spurious page fault whenever it happens

[Linus Torvalds]

On Tue, Jun 18, 2013 at 9:13 AM, Stanislav Meduna <stano@xxxxxxxxxx> wrote:
>
> No crash in 2 days running with preempt none...

Is this UP?

There's the fast_tlb race that Peter fixed in commit 29eb77825cc7
("arch, mm: Remove tlb_fast_mode()"). I'm not seeing how it would
cause infinite TLB faults, but it definitely causes potentially
incoherent TLB contents. And afaik it only happens with
CONFIG_PREEMPT, and on UP systems. Which sounds like it might match
your setup...

                Linus
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