kgdb over ethernet support for 3.x kernel

On Tue, Jul 3, 2012 at 11:09 AM, Peter Teoh [off-list ref] wrote:

have not heard of such feature available, but technically, the reason why
serial port is important is because it is initialized at a very early stage
in linux kernel bootup, and anything that happened before that cannot be
analyzed via kgdb as well.   i am not sure why u need ethernet.   normally
my approach is to use VirtualBox running a kernel with kgdb parameters all
setup, and then define a virtual serial port in VirtualBox, to connect to a
pipe, and then from host OS, use gdb to attach via "target remote" to the
virtual terminal, which is created via the "socat" command.

Search the web for details.

http://www.google.com.sg/search?q=socat+virtualbox+serial+kgdb<http://www.google.com.sg/search?sourceid=chrome&ie=UTF-8&q=socat+virtualbox+serial+kgdb>


On Tue, Jul 3, 2012 at 12:00 PM, Amit Nagal [off-list ref]wrote:

quoted

On Mon, Jul 2, 2012 at 10:35 PM,  [off-list ref] wrote:

quoted

what i know is gdb over ethernet is removed from newer kernels.
Please let me know if you have some other information.

Thanks
Ashish Bunkar
________________________________________
From: kernelnewbies-bounces at kernelnewbies.org [

kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Amit Nagal [
helloin.amit at gmail.com]

quoted

Subject: kgdb over ethernet support for 3.x kernel

Hi ,

3.x kernel does not seem to have built in support to use kgdb over
ethernet functionality .
To use this , can i be guided from where i can download patch for the
same and apply to 3.x series kernel ?

thanx & regards
Amit Nagal

Actually i want to to debug kernel modules with kgdb - gdb connected
over tcp / udp port
as depicted in
http://kernel.org/pub/linux/kernel/people/jwessel/kdb/EnableKGDB.html
section 3 .
but in kernel , there seems to no built in support for that .

Thanx & Regards
Amit Nagal

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

--
Regards,
Peter Teoh

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Hi Amit,

KGDB over ethernet is not merged to linux kernel. It is available as a
separate patch. Ethernet is very fast compared to serial communication.
While trying to debug a driver it may not be possible to use virtualbox.

Thanks,
Sannu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20120703/9730cc18/attachment.html