Re: Why can user virtual addresses sometimes be dereferenced in the kernel?

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Arjan van de Ven wrote:

as for fc2/3; those kernels have a separate address space for user and
kernel, and as a result such rogue accesses will almost always crash,
not just sometimes.

Was this feature added to the standard kernel, and if so, when? I'd like to learn more about it.


My driver bug doesn't show up in any Suse kernel, so I'm thinking this might be a Fedora-only feature. Or is it a kernel configuration?

--
Timur Tabi
Staff Software Engineer
timur.tabi@xxxxxxxxxxx

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