linux-kernel - od_set_powersave_bias: NULL pointer dereference

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Message-ID: <51C87ADC.4070409@canonical.com>
Date:	Mon, 24 Jun 2013 10:59:08 -0600
From:	Tim Gardner <tim.gardner@...onical.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, viresh.kumar@...aro.org,
	LKML <linux-kernel@...r.kernel.org>
CC:	cpufreq@...r.kernel.org, linux-pm@...r.kernel.org
Subject: od_set_powersave_bias: NULL pointer dereference

This is from Ubuntu Saucy based on 3.10-rc7:

[   12.911676] BUG: unable to handle kernel NULL pointer dereference at
0000000000000070
[   12.911691] IP: [<ffffffff8156e572>] od_set_powersave_bias+0x92/0xc0

For completeness I added the attached debug patch and built a vanilla
3.10-rc7 with the following result:

[   13.222262] od_set_powersave_bias !policy, cpu 0
[   13.222843] od_set_powersave_bias !policy, cpu 1
[   13.223380] od_set_powersave_bias !policy, cpu 2
[   13.223922] od_set_powersave_bias !policy, cpu 3

Attachments:
dmesg.txt - ubuntu kernel rebased on 3.10-rc7
dmesg_dbg.txt - vanilla 3.10-rc7 with debug patch
0001-cpufreq_ondemand.c-Added-debug.patch - debug patch
config - 3.10-rc7 config

rtg
-- 
Tim Gardner tim.gardner@...onical.com

View attachment "dmesg.txt" of type "text/plain" (58480 bytes)

View attachment "dmesg_dbg.txt" of type "text/plain" (55199 bytes)

View attachment "0001-cpufreq_ondemand.c-Added-debug.patch" of type "text/x-patch" (1182 bytes)

View attachment "config" of type "text/plain" (159243 bytes)