Re: hibernation fails from kexec'ed kernel

[Jiri Slaby <jirislaby@gmail.com>]

On 01/12/2013 09:06 PM, Rafael J. Wysocki wrote:
> On Saturday, January 12, 2013 06:26:27 PM Jiri Slaby wrote:
>> On 01/12/2013 04:47 PM, Jiri Slaby wrote:
>>> Hi,
>>>
>>> when I try to hibernate and resume from a kexec'ed kernel, the resume
>>> fails with:
>>> PM: Image not found (code -22)
>>>
>>> I dumped sig and orig_sig from swsusp_check and it looks like this:
>>> 53 57 41 50 53 50 41 43 45 32                    SWAPSPACE2
>>> 53 57 41 50 53 50 41 43 45 32                    SWAPSPACE2
>>>
>>> So it looks like the image (or only the signature) did not land to the disk.
>>
>> Note that I see "PM: S|" and the error returned from mark_swapfiles is 0.
>>
>>> I use only the in-kernel hibernation, I do not even have the suspend
>>> package installed. This is with 3.7.2 and happens this way for some time
>>> already. When I boot the kernel normally, hib+resume works just fine.
>>>
>>> Any ideas?
> 
> Quite frankly, I'm not really surprised, because this is the first time I know
> of anybody has tested hibernate and resume from a kexec'ed kernel.

It's quite usual and natural, that people kexec to a new kernel, I
think. I used to do that for a long time, but it stopped workign at some
point.

> I have no idea why exactly it doesn't work, though.

I'm trying to debug that ATM...

> Did you use s2disk or the internal hibernation?

As I write above, I don't have suspend package installed. This is a pure
in-kernel implementation.

-- 
js