Re: [Xen-devel] [SPAM] Re: kernel BUG at arch/x86/xen/mmu.c:1860! - ideas.

[Teck Choon Giam <giamteckchoon@xxxxxxxxx>]

On Thu, Mar 24, 2011 at 7:57 PM, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> On Wed, Mar 16, 2011 at 12:40:01PM -0400, Konrad Rzeszutek Wilk wrote:
>> > >  - turn on CONFIG_DEBUG_PAGEALLOC
>> > >  - turn on CONFIG_DEBUG_LIST
>> > >  - turn on CONFIG_DEBUG_KMEMLEAK
>> > >  - turn on CONFIG_JBD_DEBUG, CONFIG_JBD2_DEBUG
>> > >  - turn on CONFIG_SLUB_DEBUG_ON
>> > >
>> > > And see if anything starts coming out.
>> > >
>> >
>> > Thanks a lot for both of you spending time to do so.  It isn't easy as I
>> > believe this is something related to kernel 2.6.32.x and just wondering is
>> > there something related to *sched_domains?  I read recent mails in LKML
>>
>> Hmmm.. no idea.
>> > about rebuild_sched_domains consider dangerous issues... and that is about
>> > recent kernels but won't know what recent kernels that refer to... ...
>> >
>> > I will do those config changes in one of my test server when time permit 
>> > and
>> > will post results/output here when done.
>>
>> OK. Thank you!
>
> I've been using Jermey's latest tree: 2.6.32.32 (there is even a 2.6.32.33)
> and I can't hit this bug anymore. Would appreciate your input if you still 
> see this.
>

I still able to unfortunately :(

git url = git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
git branch = xen/next-2.6.32
git commit = ba5fcb8b8ac91d8b65c8a9c2545bf3d416fdc151

I will be compiling the latest commit 2.6.32.35 and try... ... maybe I
am crazy... it doesn't satisfy me if past one cycle of 100 loop test.
In fact, I will run with loop 1000 a few times and this can take days.
 XenLinux aka linux-2.6.18-xen.hg tree pass this test though... ...
unfortunately there are issues if I insist to use this old kernel due
to drivers etc. such as e1000e, ahci... ... although now in production
I use this xenkernel but need manually patch drivers etc... pain in
ass :p

Sorry, still haven't find time to change the configuration to those
and test and report back though as those build/compilation/packaging
are all via handled by my customized script.  I will try to do so
about the configuration change and test this weekend if possible.

Thanks.

Kindest regards,
Giam Teck Choon

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