Kernel panic of "spin lock held too long"

[John Baldwin]

On Sunday 27 June 2010 1:53:56 am KGB wrote:
> Hi John Baldwin:
>       Thank you for your reply!
>       Yes,I use an interrupt handler in my driver module and use a filter 
function. In the filter function,I call the __zt_transmit_chunk function which 
defined in the zaptel module(name zaptel.ko).

Try using a regular interrupt handler without a filter instead.

>   ------------------ Original ------------------
>   From:  "John Baldwin"<jhb at freebsd.org>;
>  Date:  Fri, Jun 25, 2010 11:09 PM
>  To:  "KGB"<e01630112a at yahoo.com.cn>; 
>  Cc:  "freebsd-drivers"<freebsd-drivers at freebsd.org>; 
>  Subject:  Re: Kernel panic of "spin lock held too long"
> 
>   
> On Friday 25 June 2010 9:56:13 am KGB wrote:
> > I met the kernel dump again.The message is below.
> 
> Do you use any interrupt handlers?  If so, are you using a filter function?
> 
> Also, you can use the 'tid' command in kgdb to switch to a thread via a tid 
to 
> avoid having to search for a 'tid' in info threads.
> 
> -- 
> John Baldwin

-- 
John Baldwin