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SubjectRe: [patch 1/3] futex_compat: fix list traversal bugs

* arnd@arndb.de <arnd@arndb.de> wrote:

> The futex list traversal on the compat side appears to have a bug.
>
> It's loop termination condition compares:
>
> while (compat_ptr(uentry) != &head->list)
>
> But that can't be right because "uentry" has the special "pi"
> indicator bit still potentially set at bit 0. This is cleared by
> fetch_robust_entry() into the "entry" return value.

hm. I remember having tested this - not well enough i guess :-/

Acked-by: Ingo Molnar <mingo@elte.hu>

Ingo
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