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Date: Wed, 22 Jan 2014 08:04:13 +0100
From: Antonio Quartulli <antonio@meshcoding.com>
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Subject: [B.A.T.M.A.N.] memleak (Was: [PATCH maint] batman-adv: fix
	soft-interface MTU computation)
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To: Russell Senior <russell@personaltelco.net>, The list for a Better Approach To Mobile Ad-hoc Networking <b.a.t.m.a.n@lists.open-mesh.org>

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On 22/01/14 07:04, Russell Senior wrote:
> Also, for testing actual traffic over the batman-adv link, I build
> OpenWrt r39354 with the patch on a Soekris net4526, so that there were
> two nodes with the same revision (different architecture):
> ubnt-bullet-m with ath9k; net4826 with ath5k.  I first noticed that I
> was losing about 100k of memory every couple seconds and pretty soon
> (with 20 minutes) the net4826 started oopsing on out-of-memory.
>=20

mh..does this happen with or without fragmentation enabled? Does this
happen even if you don't generate traffic on the interface?

> I removed the patch, rev'd OpenWrt to r39365 and confirmed that the
> net4826 build was also leaking at a substantial rate.
>=20
> I am seeing a similar, though possibly slower, leak on the ubiquiti
> bullet m2hp.  Right before rebooting, top shows kworker/u2:$N (where
> $N is 0 or 3) chewing up some cpu cycles.
>=20
> Has anybody else seen this memory leak?  Leads on where it's coming
> from?  Not a runaway process, at least not that top shows up.  Just a
> gradual disappearance from MemFree that /proc/sys/vm/drop_caches
> doesn't fix.  It isn't adhoc mode, and I can associate the two devices
> over adhoc and move a bunch of data with no memory lost, but turning
> on batman-adv seems to sink it.
>=20
>=20

Thanks for reporting!

--=20
Antonio Quartulli


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