[parisc-linux] 2.4.18 SMP instability

[Jeremy Drake]

On Sun, 26 May 2002, Grant Grundler wrote:

> Jeremy Drake wrote:
> > 2.4.18-pa26 does it too. Here's the bootup sequence.  I put in the whole
> > thing in case anyone is interested.  If not, just skip to the bottom :)  
> > Next time I'll just include relevant pieces.  
> 
> It was ok to post the whole thing.
> Did the machine "hang"?  Can you provide "TOC" output?
> (push TOC button on the back and then at PDC prompt "ser pim toc")
It hung.
Could you tell me where exactly I can find this button on a J5000?  Then I 
can get it for you.  I'll have physical access to the box all day 
tomorrow.
> 
> ...
> > Starting Samba daemons: nmbd smbdsmbd(276): unaligned access to 0x4001a2b8 at
> >    ip=0x4012ea1f
> 
> The "unaligned access" just tells us the app is touching data that
> isn't aligned. That shouldn't cause a crash. Or at least if it does,
> then it should crash the same way on a UP machine.
> 
> I don't know a damn thing about samba. Is it multi-threaded or
> anything special? Send out broadcast packets maybe?
Probably multi-threaded, definitely broadcasts.  It works w/o issues on 
UP, but on SMP, samba stops it cold.  With samba disabled, it seems to 
work fine.  I built a kernel on smp (make -j 2) with no issue, which is an 
improvement over the last time I tried this...

> 
> thanks,
> grant
> 

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