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From: Javier Domingo <javierdo1@gmail.com>
Date: Tue, 14 May 2013 20:36:59 +0200
Message-ID: <CALZVapn-3CLWeScaMcB9kmao_OfSR6_SvRm9_zCgxR7p3sygqQ@mail.gmail.com>
Subject: Re: Kernel OOPS using auditd Debian 3.2 on a /sys file audit
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I didn't get any reply, is this mailing list still valid, or should I
ask elsewhere? (this is a ping message)

Javier Domingo


2013/5/2 Javier Domingo <javierdo1@gmail.com>:
> Hi,
>
> I am currently having problems with the cpu scaling (something is
> touching the /sys/devices/system/cpu/cpu?/cpufreq/scaling_max_freq),
> and I decided to use inotify to seek if something was being changed or
> not.
>
> This gave no problems to me, but something is writing just before me,
> and I can't know from the inotifywait cmd who. Then, I found auditdl,
> so I put this command onto it:
>
> # auditctl -w /sys/devices/system/cpu/cpu?/cpufreq/scaling_max_freq
>
> And just after this, this totally blocking OOPS was triggered:
> [ 5072.685483] BUG: unable to handle kernel NULL pointer dereference
> at 0000000000000038
> [ 5072.714302] IP: [<ffffffff8114f06c>] sysfs_dentry_revalidate+0x9/0xa2
> [ 5072.741249] PGD 12eca4067 PUD 12ec62067 PMD 0
> [ 5072.768102] Oops: 0000 [#1] SMP
>
> I tried to make sysrq, but didn't work. I have repeated several times
> this and it always crashes. I am attaching the photo of the second
> time because it is much longer than the second one.
>
> Hope this helps on something!
>
> Javier Domingo
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