Re: why do we need vmalloc_sync_all?

[Andi Kleen]

Oleg Nesterov <oleg@xxxxxxxxxx> writes:
>
> But again, the kernel no longer does this? do_page_fault() does vmalloc_fault()
> without notify_die(). If it fails, I do not see how/why a modular DIE_OOPS
> handler could try to resolve this problem and trigger another fault.

The same problem can happen from NMI handlers or machine check
handlers. It's not necessarily tied to page faults only.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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