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[Xen-devel] RE: Memory leak associated with xc_map_foreign_batch?

To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] RE: Memory leak associated with xc_map_foreign_batch?
From: "Byrne, John (HP Labs)" <john.l.byrne@xxxxxx>
Date: Mon, 20 Jul 2009 16:32:46 +0000
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Thread-topic: Memory leak associated with xc_map_foreign_batch?
My problem.

> -----Original Message-----
> From: Byrne, John (HP Labs)
> Sent: Sunday, July 19, 2009 10:54 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Memory leak associated with xc_map_foreign_batch?
> I running a modified Xen x86_64 based on xen-unstable changeset
> f80cf52a4fb6, linux-2.6.18-xen changset 271d9b9bee40. (Roughly 3.4.0-
> rc4-pre)
> I'm running a process that loops using xc_map_foreign_batch() to map
> bunch of pages from a couple of domains, compares some of them, and
> then calls munmap() on the regions. /proc/meminfo shows a few extra K
> turning up as Pagetables every 10 seconds or so and the machine
> eventually runs out of memory and the OOM killer fires.
> I was wondering if anyone knew of a memory leak in the
> xc_map_foreign_batch()/munmap() path that might have been fixed or
> where I might look? (Or possibly what silly thing I'm doing wrong.)
> Thanks,
> John Byrne

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