[Bluez-devel] bcsp not working

[Bluez-devel] bcsp not working

[Carlos AM]

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Hi

I am able to 

<3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
<3>bcsp_recv: Checksum failed: computed b237 received 0000
<4>Warning: kfree_skb passed an skb still on a list (from 000f77a4).
<2>kernel BUG at skbuff.c:319!
<3>bcsp_recv: Short BCSP packet

Carlos AM
Naxus Conectividad Móvil

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[Bluez-devel] BCSP not working

[Carlos AM]

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Hi

These messages appear on the kernel log when I am using BCSP:

<3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
<3>bcsp_recv: Checksum failed: computed b237 received 0000
<4>Warning: kfree_skb passed an skb still on a list (from 000f77a4).
<2>kernel BUG at skbuff.c:319!
<3>bcsp_recv: Short BCSP packet

Then the computer hangs.

I enabled "Send CRC with every hci packet" in the kernel and in the bluetooth device.

What's happening?




Carlos AM
Naxus Conectividad Móvil

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Re: [Bluez-devel] bcsp not working

[Marcel Holtmann]

Hi Carlos,

> I am able to 
>  
> <3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> <3>bcsp_recv: Checksum failed: computed b237 received 0000
> <4>Warning: kfree_skb passed an skb still on a list (from 000f77a4).
> <2>kernel BUG at skbuff.c:319!
> <3>bcsp_recv: Short BCSP packet

we need more details.

Regards

Marcel




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Re: [Bluez-devel] BCSP not working

[Marcel Holtmann]

Hi Carlos,

> These messages appear on the kernel log when I am using BCSP:
>  
> <3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> <3>bcsp_recv: Checksum failed: computed b237 received 0000
> <4>Warning: kfree_skb passed an skb still on a list (from 000f77a4).
> <2>kernel BUG at skbuff.c:319!
> <3>bcsp_recv: Short BCSP packet
>  
> Then the computer hangs.
>  
> I enabled "Send CRC with every hci packet" in the kernel and in the
> bluetooth device.

I asked for more information not some extra text. What kernel version
are using, what library version, what tools. What hardware, what command
for reproducing etc. Is there an oops?

Regards

Marcel




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Re: [Bluez-devel] BCSP not working

[Carlos AM]

Hi

The machine is an arm running uclinux. I used the linux kernel version
2.4.22 and bluez-2.7. Yesterday I patched the kernel with this patch:

http://www.holtmann.org/linux/kernel/patch-2.4.22-mh7.gz

And got the following kernel log:

<3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
<3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
<4>Warning: kfree_skb passed an skb still on a list (from 00093a14).
<2>kernel BUG at skbuff.c:319!
(hanged)

The only difference with the last kernel messages was:
 "<3>bcsp_recv: Short BCSP packet" that didn't appear anymore.
According to the kernel patch changelog this is normal.

I execute the following script to start all the bluetooth stuff:
------------------------------------------------------------
#!/bin/sh
/bluez/hcid -n &
/bluez/bluezmain hciattach -n /dev/tts/2 csr 115200 &
/bluez/bluezmain hciconfig hci0 up
/bluez/sdpd -n &
/bluez/bluezmain sdptool add sp
#my own program
/bluez/rfcomm-server 1
------------------------------------------------------------
I used "-n" because the uclinux fork call does not behave as normal linux.
The uclinux hangs in hciattach.


I successfully executed this script with the same bluetooth hardware in a Linux 2.6 PC with bluez 2.7.
Everything worked fine.

Regards.
Carlos.




> > These messages appear on the kernel log when I am using BCSP:
> >  
> > <3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> > <3>bcsp_recv: Checksum failed: computed b237 received 0000
> > <4>Warning: kfree_skb passed an skb still on a list (from 000f77a4).
> > <2>kernel BUG at skbuff.c:319!
> > <3>bcsp_recv: Short BCSP packet
> >  
> > Then the computer hangs.
> >  
> > I enabled "Send CRC with every hci packet" in the kernel and in the
> > bluetooth device.
> 
> I asked for more information not some extra text. What kernel version
> are using, what library version, what tools. What hardware, what command
> for reproducing etc. Is there an oops?
> 
> Regards
> 
> Marcel
> 



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Re: [Bluez-devel] BCSP not working

[Marcel Holtmann]

Hi Carlos,

> The machine is an arm running uclinux. I used the linux kernel version
> 2.4.22 and bluez-2.7. Yesterday I patched the kernel with this patch:
> 
> http://www.holtmann.org/linux/kernel/patch-2.4.22-mh7.gz
> 
> And got the following kernel log:
> 
> <3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> <3>bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> <4>Warning: kfree_skb passed an skb still on a list (from 00093a14).
> <2>kernel BUG at skbuff.c:319!
> (hanged)
> 
> The only difference with the last kernel messages was:
>  "<3>bcsp_recv: Short BCSP packet" that didn't appear anymore.
> According to the kernel patch changelog this is normal.

I don't get your point, because I can't remember any change that implies
this. Actually I care about the kfree_skb bug, because it seems that
with ucLinux something works different. I am not an expert in that area,
so I can't help you here. Have you tried a 2.6 kernel?

Regards

Marcel




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