Re: 2.4 lockup issue (flush_tlb_all)

Marcelo Tosatti
2004-11-07T20:29:02Z

On Wed, Nov 03, 2004 at 12:36:47PM +0100, Thomas Oulevey wrote:
> Hello,
>
> We are experiencing some lockup problems with our SMP configuration.
> Here are the details :
> - The computers lockup with no relevant logs.
> - The kernel still replies to ping but higher level services are not
> responding.
> - After few hours (5-8), the kernel answers again and the load is around
> 40 then decreasing.
>
> We manage to get some SysRq showPc output (screenshot :
> http://www.elonex.ch/shot/)
> According to the basic sysreq debugging, the problem seems to be related
> to the function flush_tlb_all, and it is triggered with a write or read
> (local or on nfs sometimes).
>
> I looked at the LKML, and didn't find any known issues.
> Maybe it has been corrected but not backported by redhat !
> I'll appreciate any help.
>
> Thank you in advance.
>
> detailed configuration :
> ---------------
> Processor : 2 x 2.8Ghz Pentium Xeon
> Motherboard : Intel se7501cw2
> Memory : 4 x 512MB DDR 266 ECC registered
> Kernel : 2.4.20-31 (Redhat 7.3 with updates)

You should report this one to the RH people, but I think RH 7.3
isnt support anymore?

Upgrading the kernel is a good idea.