[OpenAFS-devel] System lockup with do_IRQ: stack overflow

[Derrick J Brashear]

On Sun, 25 Feb 2007, chas williams - CONTRACTOR wrote:

> In message <45E2050B.1020404@wurley.net>,Deon George writes:
>> chas williams - CONTRACTOR wrote:
>>> In message <20070224015651.M90428@wurley.net>,"Deon George" writes:
>>>
>>>> do_IRQ: stack overflow <number>
>>>> I think the number was different each time (I didnt write it down).
>>>>
>>>
>>> the stock 32-bit fc6 kernels have CONFIG_4KSTACKS.  are you running a
>>> 32-bit guest?
>>>
>> Yes, I'm running 32 bit host and guest. I have no custom kernels - so my
>> FC6 guest and my RHEL5 host and guest are all stock distro kernels.
>
> unfortunately the afs client (and vmware too actually) need quite a
> bit of stack space.  if you can, rebuild with the 4KSTACKS option
> disabled.
>
>>> you might try building your 64-bit host/guest kernels with
>>> DEBUG_STACK_USAGE or DEBUG_STACKOVERFLOW (if not already).
>> Does this still apply then?
>
> you could build a 32-bit kernel with these and try to find the path in
> the kernel that is overflowing the stack.

I may have a patch, depending what path. I have one which isn't really 
pretty but was the best way to collapse out some stack frames.