linux-kernel - kmemleak, cpu usage jump out of nowhere

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Message-ID: <AANLkTil6opQmTVVxuP1ngz72_ijpLzdlSFWDSyi4whOt@mail.gmail.com>
Date:	Wed, 14 Jul 2010 08:12:48 +0200
From:	Zeno Davatz <zdavatz@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: kmemleak, cpu usage jump out of nowhere

Hi

I got a new Intel core-8 i7 processor.

I am on kernel uname -a

Linux zenogentoo 2.6.35-rc5 #97 SMP Tue Jul 13 16:13:25 CEST 2010 i686
Intel(R) Core(TM) i7 CPU 960 @ 3.20GHz GenuineIntel GNU/Linux

Sometimes in the middle of nowhere all of a sudden all of my 8-cores
are at 100% CPU usage and my machine really lags and hangs and is not
useable anymore. Some random process just grabs a bunch CPUs according
to htop.

dmesg tell me that

kmemleak: 38 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

I am attaching you the file from /sys/kernel/debug/kmemleak

Let me know if you need anything else.

Best
Zeno

Download attachment "kmemleak" of type "application/octet-stream" (33456 bytes)