* might_sleep() called in die()
@ 2006-05-09 21:28 David Wilder
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From: David Wilder @ 2006-05-09 21:28 UTC (permalink / raw)
To: linuxppc-dev
Paul-
Can you advise me? In the die() function might_sleep() is called while
holding the die_lock (see call flow below).
If voluntary preemption is set this can cause a deadlock when multiple
Oops occur. I am seeing this problem when issuing a soft-reset as all
cups call die() at roughly the same time.
die()
->>show_regs()->>show_instructions()->>__get_user_nocheck()->>might_sleep()
My question is basically should die() ever call might_sleep()? If so why?
I currently working around the problem by calling clear_need_resched()
at the top of die().
--
David Wilder
IBM Linux Technology Center
Beaverton, Oregon, USA
dwilder@us.ibm.com
(503)578-3789
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2006-05-09 21:28 might_sleep() called in die() David Wilder
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