* how to debug watchdog reset problems
@ 2015-07-09 20:09 Ryan
2015-07-10 1:54 ` Mike Galbraith
0 siblings, 1 reply; 2+ messages in thread
From: Ryan @ 2015-07-09 20:09 UTC (permalink / raw)
To: linux-kernel
Hello,
I am using a 3.10 kernel on a product. As soon as i get the shell
prompt is displayed - The serial console freezes indicating an
apparent hang
and watchdog does a hardware reset.
I wanted to check if there is a way of debugging such an issue. I know
that record saying "entering function" and "exiting function"
somewhere
in the memory which i could access after reset and then find out who
cause the freeze.
However, then i need to add such an instrumentation to the whole
kernel. which is very time consuming and a real pain.
Could anyone suggest a better way of debugging kernel freeze.
Thanks and Regards,
Ryan.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: how to debug watchdog reset problems
2015-07-09 20:09 how to debug watchdog reset problems Ryan
@ 2015-07-10 1:54 ` Mike Galbraith
0 siblings, 0 replies; 2+ messages in thread
From: Mike Galbraith @ 2015-07-10 1:54 UTC (permalink / raw)
To: Ryan; +Cc: linux-kernel
On Fri, 2015-07-10 at 01:39 +0530, Ryan wrote:
> Could anyone suggest a better way of debugging kernel freeze.
If the serial console is locking up on you, you could try netconsole.
-Mike
^ permalink raw reply [flat|nested] 2+ messages in thread
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