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SubjectRe: [PATCH] x86 page fault handler not interrupt safe
Alan Cox wrote:
> (The current -ac fix for the double vmalloc races is below. WP test makes it
> more complex than is nice)

WP test is easy to handle. Just filter out protection violations and
only take the vmalloc path if the page was not found.

- if (address >= TASK_SIZE && !(error_code & 4))
+ if (address >= TASK_SIZE && !(error_code & 5))


Brian Gerst
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