Re: Recent 6.0_BETA crash

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Mar 08, 2012 at 02:04:49PM +0300, Aleksey Cheusov wrote:
>  >> I few minutes ago I updated the kernel and modules on my 6.0_BETA
>  >> to the latest netbsd-6 sources and enabled debugging kernel options.
>  >> 
>  >>    options        DEBUG           # expensive debugging checks/support
>  >>    makeoptions    DEBUG="-g"      # compile full symbol table
>  >> 
>  >> Userlevel was not updated.
>  >> After login in xdm the system crashed.
>  >>     at /srv/src_netbsd_current/sys/arch/x86/x86/pmap.c:3326
>  >> 
>  >>     3326            KASSERT(uvm_page_locked_p(pg));
>  >> 
>  >> Stacktrace is below. Any clue?
> 
> > It looks like the same problem as what makes the kernel occasionally panic
> > while running tests. It looks like a race condition causing memory 
> > corrution,
> > but this is hard to track down ...
> 
> On my system this crash is reproducible. At least it repeated three
> times with xdm login.  Does it make sense to send PR?

Does it always fail in the same way, or does the panic happen at random
places ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--