bttv oops

bttv oops

[Stephen Clark]

Gentle people,

I am having the following problem. Also if I compile bttv into the 
kernel I get a panic in the driver at boot.

Any ideas?

Thanks,
Steve

Linux joker.seclark.com 2.6.2-rc2-mm1 #24 Sun Feb 1 16:20:54 EST 2004 
i686 athlon i386 GNU/Linux

Feb  2 08:26:57 joker kernel: bttv: driver version 0.9.12 loaded
Feb  2 08:26:57 joker kernel: bttv: using 8 buffers with 2080k (520 
pages) each for capture
Feb  2 08:26:57 joker kernel: bttv: Bt8xx card found (0).
Feb  2 08:26:57 joker kernel: bttv0: Bt878 (rev 2) at 0000:00:08.0, irq: 
10, latency: 32, mmio: 0xd7021000
Feb  2 08:26:57 joker kernel: bttv0: detected: AVerMedia TVPhone98 
[card=41], PCI subsystem ID is 1461:0001
Feb  2 08:26:57 joker kernel: bttv0: using: AVerMedia TVPhone 98 
[card=41,autodetected]
Feb  2 08:26:57 joker /sbin/hotplug: no runnable 
/etc/hotplug/i2c-adapter.agent is installed
Feb  2 08:26:57 joker /sbin/hotplug: no runnable 
/etc/hotplug/i2c-dev.agent is installed
Feb  2 08:26:57 joker /sbin/hotplug: no runnable /etc/hotplug/i2c.agent 
is installed
Feb  2 08:26:57 joker kernel: Unable to handle kernel NULL pointer 
dereference at virtual address 00000000
Feb  2 08:26:57 joker kernel:  printing eip:
Feb  2 08:26:57 joker kernel: c02c1214
Feb  2 08:26:57 joker kernel: *pde = 00000000
Feb  2 08:26:57 joker kernel: Oops: 0000 [#1]
Feb  2 08:26:57 joker kernel: CPU:    0
Feb  2 08:26:57 joker kernel: EIP:    0060:[<c02c1214>]    Not tainted VLI
Feb  2 08:26:57 joker kernel: EFLAGS: 00010202
Feb  2 08:26:57 joker kernel: EIP is at i2c_master_recv+0xa4/0x110
Feb  2 08:26:57 joker kernel: eax: 00000000   ebx: 00000050   ecx: 
00000010   edx: 00004d3c
Feb  2 08:26:57 joker kernel: esi: 00000001   edi: f8ccbca4   ebp: 
f8ccbed0   esp: e681de4c
Feb  2 08:26:57 joker kernel: ds: 007b   es: 007b   ss: 0068
Feb  2 08:26:57 joker kernel: Process modprobe (pid: 7165, 
threadinfo=e681c000 task=ef128ce0)
Feb  2 08:26:57 joker kernel: Stack: f8ccbf44 00000001 00000010 00000050 
00010050 00000010 f8cd2a20 000000a0
Feb  2 08:26:57 joker kernel:        00000000 f8ccbed0 f8cd2a20 f8ccbca0 
f8cba4dc f8ccbed0 f8cd2a20 00000010
Feb  2 08:26:57 joker kernel:        f8ccbca0 f8ccbca0 00000000 f8cb6105 
f8ccbca0 f8cd2a20 000000a0 00000040
Feb  2 08:26:57 joker kernel: Call Trace:
Feb  2 08:26:57 joker kernel:  [<f8cba4dc>] bttv_readee+0x4c/0x80 [bttv]
Feb  2 08:26:57 joker kernel:  [<f8cb6105>] bttv_init_card2+0x585/0x620 
[bttv]
Feb  2 08:26:57 joker kernel:  [<f8cb4a46>] bttv_probe+0x456/0x600 [bttv]
Feb  2 08:26:57 joker kernel:  [<c01f66a2>] 
pci_device_probe_static+0x32/0x50
Feb  2 08:26:57 joker kernel:  [<c01f66e7>] __pci_device_probe+0x27/0x40
Feb  2 08:26:57 joker kernel:  [<c01f671c>] pci_device_probe+0x1c/0x40
Feb  2 08:26:57 joker kernel:  [<c02380ce>] bus_match+0x2e/0x60
Feb  2 08:26:57 joker kernel:  [<c02381e7>] driver_attach+0x57/0x80
Feb  2 08:26:57 joker kernel:  [<c023842b>] bus_add_driver+0x6b/0x80
Feb  2 08:26:57 joker kernel:  [<c02387ed>] driver_register+0x2d/0x40
Feb  2 08:26:57 joker kernel:  [<c01e96d9>] kset_add+0x29/0x30
Feb  2 08:26:57 joker kernel:  [<c01e96f1>] kset_register+0x11/0x20
Feb  2 08:26:57 joker kernel:  [<c01f68cf>] pci_register_driver+0x4f/0x70
Feb  2 08:26:57 joker kernel:  [<f8cb4fec>] bttv_init_module+0x8c/0x120 
[bttv]
Feb  2 08:26:57 joker kernel:  [<c0130ca1>] sys_init_module+0xf1/0x1b0
Feb  2 08:26:57 joker kernel:  [<c03a851a>] sysenter_past_esp+0x43/0x69
Feb  2 08:26:57 joker kernel:
Feb  2 08:26:57 joker kernel: Code: 24 04 50 57 ff 52 24 89 c6 83 c4 0c 
89 d9 ff 47 1c 0f 8e 1e 15 00 00 8b 5d
 08 53 8b 4c 24 30 51 50 8d 45 74 50 8b 85 8c 00 00 00 <8b> 10 52 68 a0 
d2 3f c0 e8 9f c0 e5 ff 83 c4 18 83 fe
 01 89 f0

Re: bttv oops

[Gerd Knorr]

Stephen Clark <stephen.clark@earthlink.net> writes:

> Gentle people,
> 
> I am having the following problem. Also if I compile bttv into the
> kernel I get a panic in the driver at boot.
> 
> Any ideas?

disable CONFIG_I2C_*_DEBUG, the debug printk() dereference pointers
unchecked.

  Gerd

-- 
"... und auch das ganze Wochenende oll" -- Wetterbericht auf RadioEins

Re: bttv oops

[Greg KH]

On Mon, Feb 02, 2004 at 04:47:14PM +0100, Gerd Knorr wrote:
> Stephen Clark <stephen.clark@earthlink.net> writes:
> 
> > Gentle people,
> > 
> > I am having the following problem. Also if I compile bttv into the
> > kernel I get a panic in the driver at boot.
> > 
> > Any ideas?
> 
> disable CONFIG_I2C_*_DEBUG, the debug printk() dereference pointers
> unchecked.

Oops, what printks do this?  I'll be glad to fix that up.

thanks,

greg k-h

Re: bttv oops

[Greg KH]

On Mon, Feb 02, 2004 at 04:47:14PM +0100, Gerd Knorr wrote:
> Stephen Clark <stephen.clark@earthlink.net> writes:
> 
> > Gentle people,
> > 
> > I am having the following problem. Also if I compile bttv into the
> > kernel I get a panic in the driver at boot.
> > 
> > Any ideas?
> 
> disable CONFIG_I2C_*_DEBUG, the debug printk() dereference pointers
> unchecked.

Here's the patch that has been reported to fix this oops.  I've added it
to my i2c bk tree.

thanks,

greg k-h

# I2C: fix oops when CONFIG_I2C_DEBUG_CORE is enabled and the bttv driver is loaded.

diff -Nru a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
--- a/drivers/i2c/i2c-core.c	Tue Feb  3 17:00:46 2004
+++ b/drivers/i2c/i2c-core.c	Tue Feb  3 17:00:46 2004
@@ -598,7 +598,7 @@
 		ret = adap->algo->master_xfer(adap,&msg,1);
 		up(&adap->bus_lock);
 	
-		dev_dbg(&client->dev, "master_recv: return:%d (count:%d, addr:0x%02x)\n",
+		dev_dbg(&client->adapter->dev, "master_recv: return:%d (count:%d, addr:0x%02x)\n",
 			ret, count, client->addr);
 	
 		/* if everything went ok (i.e. 1 msg transmitted), return #bytes