Messages in this thread | | | Date | Fri, 19 Aug 2016 13:45:08 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH] mm: Add WARN_ON for possibility of infinite loop if empty lists in free_pcppages_bulk' |
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On Fri, Aug 19, 2016 at 05:45:18PM +0530, Pankaj Gupta wrote: > While debugging issue in realtime kernel i found a scenario > which resulted in infinite loop resulting because of empty pcp->lists > and valid 'to_free' value. This patch is to add 'WARN_ON' in function > 'free_pcppages_bulk' if there is possibility of infinite loop because > of any bug in code. >
What was the bug that allowed this situation to occur? It would imply the pcp count was somehow out of sync.
-- Mel Gorman SUSE Labs
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