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SubjectRe: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots)

hm, i think i can see the SMP race.

the last put_task_struct() can also be done by procfs - and nothing keeps
it from freeing the task in __put_task_struct(), while the task struct is
after its final put_task_struct(), but before the switch_to().

this does not explain the UP crash though.

Ingo


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