linux-kernel - Re: Imon module Oops and kernel hang

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Date:	Wed, 13 Jul 2011 15:42:29 +1000
From:	Chris W <lkml@...chogeeks.com>
To:	Jarod Wilson <jarod@...sonet.com>
CC:	Linux Media Mailing List <linux-media@...r.kernel.org>,
	linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...otime.net>
Subject: Re: Imon module Oops and kernel hang


On 13/07/11 14:20, Jarod Wilson wrote:

>> Chris W wrote:
>> The rc keymap modules have been built (en masse as a result of
>> CONFIG_RC_MAP=m) but I am not explicitly loading them and they do not
>> get automatically loaded.
>
> Huh. That's unexpected. They get auto-loaded here, last I knew. I'll
> have to give one of my devices a spin tomorrow, not sure exactly what
> the last kernel I tried one of them on was. Pretty sure they're
> working fine with the Fedora 15 2.6.38.x kernels and vanilla (but
> Fedora-configured) 3.0-rc kernels though.


I just ran depmod to make sure things were straight in this dept.

kepler ~ # depmod -F System.map -e -av 2.6.39.3

There are no reported errors.   The modules rc-imon-mce.ko,
rc-imon-pad.ko and imon.ko depend only on rc-core.ko according to the
output.  There don't seem to be any explicit dependencies to the keymaps
(not a kernel dev so I don't know if there should be)


>> I just tried this:
>>
>> kepler ~ # rmmod rc_winfast ir_lirc_codec lirc_dev ir_sony_decoder
>> ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder ir_nec_decoder
>>
>> kepler ~ # modprobe -v rc-imon-pad
>> insmod
/lib/modules/2.6.39.3/kernel/drivers/media/rc/keymaps/rc-imon-pad.ko
>>
>> kepler ~ # modprobe -v rc-imon-mce
>> insmod
/lib/modules/2.6.39.3/kernel/drivers/media/rc/keymaps/rc-imon-mce.ko
> ...
>> kepler ~ # modprobe -v imon debug=1
>> insmod /lib/modules/2.6.39.3/kernel/drivers/media/rc/imon.ko debug=1
>>
>> with the same crash (below).  (I have the tainting nvidia driver
>> loaded today but it was absent yesterday)
>>
>> Perhaps there something else in the kernel config that must be on in
>> order to support the keymaps?
>>
>> Any other thoughts?
>
> Not at the moment. That T.889 line is... odd. No clue what the heck
> that thing is. Lemme see what I can see tomorrow (just past midnight
> here at the moment), if I don't hit anything, I might need a copy of
> your kernel config to repro.

I can only see the "T.889" string in the System.map, kernel binary and
kernel/sched.o (but not the source?).  I have sent the config file
off-list to Jarod.

I will try a Gentoo out-of-the-box kernel config when I finish work also.

Thanks once again for your time
Regards,

-- 
Chris Williams
Brisbane, Australia
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