[2.6.25-rc2] stack trace immediately before rebooting/switching off

[2.6.25-rc2] stack trace immediately before rebooting/switching off

[Andrey Borzenkov]

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In 2.6.25 I get stack trace immediately before system is switched off or
reboots. It is too fast to capture it on VGA; netconsole does not capture
it either - probably network is already shutdown at this point. I do
not have serial port on this system.

Any idea how could I capture it? Thank you.

The problem did not exist in 2.6.24 and below. 

-andrey

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Re: [2.6.25-rc2] stack trace immediately before rebooting/switching off

[Rafael J. Wysocki]

On Sunday, 17 of February 2008, Andrey Borzenkov wrote:
> In 2.6.25 I get stack trace immediately before system is switched off or
> reboots. It is too fast to capture it on VGA; netconsole does not capture
> it either - probably network is already shutdown at this point. I do
> not have serial port on this system.
> 
> Any idea how could I capture it? Thank you.
> 
> The problem did not exist in 2.6.24 and below. 

Is this the e100 issue you reported later or something else?

Rafael

Re: [2.6.25-rc2] stack trace immediately before rebooting/switching off

[Andrey Borzenkov]

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On Sunday 17 February 2008, Rafael J. Wysocki wrote:
> On Sunday, 17 of February 2008, Andrey Borzenkov wrote:
> > In 2.6.25 I get stack trace immediately before system is switched off or
> > reboots. It is too fast to capture it on VGA; netconsole does not capture
> > it either - probably network is already shutdown at this point. I do
> > not have serial port on this system.
> > 
> > Any idea how could I capture it? Thank you.
> > 
> > The problem did not exist in 2.6.24 and below. 
> 
> Is this the e100 issue you reported later or something else?
> 

Well, I can't be entirely sure unless I have some way to capture this :)
 



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Re: [2.6.25-rc2] stack trace immediately before rebooting/switching off

[Andrew Morton]

On Sun, 17 Feb 2008 15:16:53 +0300 Andrey Borzenkov <arvidjaar@mail.ru> wrote:

> In 2.6.25 I get stack trace immediately before system is switched off or
> reboots. It is too fast to capture it on VGA; netconsole does not capture
> it either - probably network is already shutdown at this point. I do
> not have serial port on this system.
> 
> Any idea how could I capture it? Thank you.
> 
> The problem did not exist in 2.6.24 and below. 
> 

- put an mdelay(100000) into sys_reboot() somewhere, take photo of screen

- try plain old /sbin/halt, see if that does it as well.