debug bpha

[Zhang, Sonic]

Hi,

	Please apply patches "kdb-smphdr-v4.0-2.4.20-*" on sgi's ftp site.

	If you build your kernel for i386 architecture, please also apply the patch in the attachment.

	Regards.

	Sonic


-----Original Message-----
From: Hua Qin [mailto:qinhua at networks.ecse.rpi.edu]
Sent: 2003?3?27? 7:06
To: Keith Owens
Cc: kdb at oss.sgi.com
Subject: debug bpha



The "bpha" command is not working properly on my building kernel. so I
just want to know where is the code I should look at.

The problem is I set breakpoint "ip_defrag" by using bpha, and then send
bigger packets to this machine. The ip_defrag should be caught and the
machine should drop to kdb, but nothing happened. If I use "bp" command,
it can drop to the kdb on the break point.

I did some debug, it seems "do_debug" (traps.c) was not be called by using
"bpha".
Does someone know a little bit deeper, how "do_debug" be called ?

Thanks!
Hua





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