Messages in this thread | | | Date | Sat, 8 Nov 2008 11:46:16 +0900 (JST) | Subject | Re: 2.6.28-rc3 mem_cgroup panic | From | "KAMEZAWA Hiroyuki" <> |
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KAMEZAWA Hiroyuki said: > Badari Pulavarty said: >> Hi Balbir, >> >> I was running memory remove/add tests in a continuous loop. >> I get following panic in mem_cgroup migration code. >> >> Is this a known issue ? >> > No, this is new one. We don't see panic in cpuset based migration..so.. > Maybe related to page_cgroup allocation/free code in memory hotplug > notifier. > > Thank you for report. I'll try this. > Hmm...at quick look...
online/offline page_cgroup's calculation for "start" is buggy..
-start = start_pfn & (PAGES_PER_SECTION - 1); +start = start_pfn & ~(PAGES_PER_SECTION - 1);
I'm sorry I can't write patch today.
Regards, -Kame
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