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    SubjectRe: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots)
    On Thu, 20 Feb 2003, Andrew Morton wrote:
    >> Fixes two deadlocks in the scheduler exit path:
    >> 1: We're calling mmdrop() under spin_lock_irq(&rq->lock). But mmdrop
    >> calls vfree(), which calls smp_call_function().

    On Thu, Feb 20, 2003 at 11:04:41PM +0100, Ingo Molnar wrote:
    > this has been fixed in the -F3 scheduler patch.

    Not quite. It leaks mm's because schedule_tail() isn't cleaning
    up rq->prev_mm.


    -- wli
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