Re: [linux-dvb] FusionHDTV7 and v4l causes kernel panic

["Timothy D. Lenz" <tlenz@vorgon.com>]

After searching the internet for ways to redirect the error to serial or other system and not getting to work, I typed out by hand
what is on the screen minus the cpu dump which is mostly scrolled off anyway and thus gone. In trying to get the dump out ttyS0 I
found I was getting different dumps to screen.
When I use:
  kernel /boot/vmlinuz-2.6.26.8.20090311.1 root=/dev/hda1 ro quiet console=ttyS0,115200n8 console=tty0

I get:
Call Trace:
 [<f8aa406f>] netup_ci_slot_status+0x2e/0x34 [cx23885]
 [<f8aa07ff>] cx23885_irq+0x327/0x3d8 [cx23885]
 [<c013d10c>] handle_IRQ_event+0x1a/0x3f
 [<c013df36>] handle_fasteoi_irq+0x76/0xab
 [<c0105236>] do_IRQ+0x4f/0x65
 [<c010366f>] common_interrupt+0x23/0x28
 =======================
Code: 00 74 04 0f 0b eb fe 89 d8 e8 ed a3 ff ff ba 01 00 00 00 5b 89 d0 5e c3 51
 89 d1 8b 15 20 ba 3e c0 e8 52 ff ff ff 5a c3 53 89 c3 <f0> 0f ba 2a 00 19 c0 31
 c9 85 c0 75 54 8d 42 04 39 42 04 74 04
EIP: [<c012a8c6>] queue_work+0x3/0x68 SS:ESR 0068:f7733f40
Kernel panic - not syncing: Fatal exception in interrupt

When I use the default setting:
  kernel /boot/vmlinuz-2.6.26.8.20090311.1 root=/dev/hda1 ro quiet

I get:
Call Trace:
 [<f8aa406f>] netup_ci_slot_status+0x2e/0x34 [cx23885]
 [<f8aa07ff>] cx23885_irq+0x327/0x3d8 [cx23885]
 [<c013d10c>] handle_IRQ_event+0x1a/0x3f
 [<c013df36>] handle_fasteoi_irq+0x76/0xab
 [<c0105236>] do_IRQ+0x4f/0x65
 [<c010366f>] common_interrupt+0x23/0x28
 [<c0308096>] _spin_unlock_irq+0x5/0x19
 [<c011e3ba>] do_syslog+0x12f/0x2f1
 [<c010369c>] reschedule_interrupt+0x28/0x30
 [<c012cd38>] autoremove_wake_function+0x0/0x2d
 [<c018f27a>] kmsg_read+0x0/0x36
 [<c01888cf>] proc_reg_read+0x60/0x73
 [<c018886f>] proc_reg_read+0x0/0x73
 [<c015d9cf>] vfs_read+0x81/0xf4
 [<c015dada>] sys_read+0x3c/0x63
 [<c0102c7d>] sysenter_past_esp+0x6a/0x91
 =======================
Code: 00 74 04 0f 0b eb fe 89 d8 e8 ed a3 ff ff ba 01 00 00 00 5b 89 d0 5e c3 51
 89 d1 8b 15 20 ba 3e c0 e8 52 ff ff ff 5a c3 53 89 c3 <f0> 0f ba 2a 00 19 c0 31
 c9 85 c0 75 54 8d 42 04 39 42 04 74 04
EIP: [<c012a8c6>] queue_work+0x3/0x68 SS:ESR 0068:f7693e7c
Kernel panic - not syncing: Fatal exception in interrupt

It may be a bit different each time because I think I've seen longer "Call Trace" dumps

----- Original Message ----- 
From: "Andy Walls" <awalls@radix.net>
To: <linux-media@vger.kernel.org>
Cc: <linux-dvb@linuxtv.org>
Sent: Wednesday, March 18, 2009 7:48 PM
Subject: Re: [linux-dvb] FusionHDTV7 and v4l causes kernel panic


> On Wed, 2009-03-18 at 19:16 -0700, Timothy D. Lenz wrote:
> > I've added
> >     console=ttyS0,115200 console=tty0
> > to the kernel command line options and with out the console=tty0 part the dump no longer shows on the monitor, so redirect seems
to
> > work but loging the serial port on a second computer gets nothing. I tested the connection with echo and that worked but the
kernel
> > dump won't go out the port.  The last 2 lines of the screen are:
> >
> > EIP: [<c012a8c6>] queue_work+0x3/0x68 SS:ESP 0068:f778dd24
> > Kernel panic - not syncing: Fatal exception in interrupt
>
> Hmm.  The only thing in the cx23885 driver that tries to schedule work,
> and thus the only thing that could possibly pass in a bad argument, is
> the netup_ci_slot_status() function.  It gets called when an IRQ comes
> in indicating a GPIO[01] event, and the driver thinks the card is a
> NetUp Dual DVB-S2 CI card.
>
> That's consistent with the "fatal exception in interrupt", but without
> the backtrace, one can't be completely sure this call to queue work was
> initiated by the cx23885 driver and a problem with cx23885 data
> structures.  (But it is the most likely scenario, IMO)
> I just can't see how netup_ci_slot_status() get's called for your card.
>
>
> > Any way to get the dump to go out the serial port?
>
> Does 9600 baud help? (Just a guess.)
>
> Regards,
> Andy
>
> > ----- Original Message ----- 
> > From: "Andy Walls" <awalls@radix.net>
> > To: "Timothy D. Lenz" <tlenz@vorgon.com>
> > Cc: <linux-media@vger.kernel.org>
> > Sent: Monday, March 16, 2009 6:07 PM
> > Subject: Re: [linux-dvb] FusionHDTV7 and v4l causes kernel panic
> >
> >
> > > On Mon, 2009-03-16 at 17:46 -0700, Timothy D. Lenz wrote:
> > > > When it panics, there is no log, just a bunch of stuff that that scrolls fast on the main monitor then cold lock.
> > > >  No way to scroll
> > > > back.
> > >
> > > Not even Shift+PageUp ?
> > >
> > >
> > >
> > > >  I looked at the logs and the ones that are text had nothing about it.
> > >
> > > Digital camera or pencil and paper will be least complex way to capture
> > > the ooops data.  Please don't leave out the "Code" bytes at the bottom
> > > and do your best to make sure those are absolutely correct.
> > >
> > > Regards,
> > > Andy
> > >
> > >
> > > > ----- Original Message ----- 
> > > > From: "Steven Toth" <stoth@linuxtv.org>
> > > > To: <linux-media@vger.kernel.org>
> > > > Cc: <linux-dvb@linuxtv.org>
> > > > Sent: Monday, March 16, 2009 6:59 AM
> > > > Subject: Re: [linux-dvb] FusionHDTV7 and v4l causes kernel panic
> > > >
> > > >
> > > > > Timothy D. Lenz wrote:
> > > > > > Using kernel 2.6.26.8 and v4l from a few days ago. When I modprobe cx23885 to load the drivers, I get kernel panic
> > > > >
> > > > > We'll need the oops.
> > > > >
> > > > > - Steve
> > > > >
> > > > > _______________________________________________
> > > > > linux-dvb users mailing list
> > > > > For V4L/DVB development, please use instead linux-media@vger.kernel.org
> > > > > linux-dvb@linuxtv.org
> > > > > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> > > >
> > > > --
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> > > >
> > >
> >
> >
> > _______________________________________________
> > linux-dvb users mailing list
> > For V4L/DVB development, please use instead linux-media@vger.kernel.org
> > linux-dvb@linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> >
>
>
> _______________________________________________
> linux-dvb users mailing list
> For V4L/DVB development, please use instead linux-media@vger.kernel.org
> linux-dvb@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb