Fresh 7.0 Install: Fatal Trap 12 panic when put under load

[Kostik Belousov]

On Tue, Jul 15, 2008 at 08:47:03PM +0100, john at basicnets.co.uk wrote:
> 
> 
>   >> #9  0xffffffff8067d3ee in uma_zalloc_arg (zone=0xffffff00bfed07e0,
> >>udata=0x0,
> >>flags=-256) at /usr/src/sys/vm/uma_core.c:1835
> >From the frame #9, please do
> >p *zone
> >I am esp. interested in the value of the uz_ctor member.
> >
> >It seems that it becomes corrupted, it value should be 0, as this seems
> >to be ffs inode zone.  I suspect that gdb would show 0x6400000000 instead.
> 
>   I am afraid that you may need to spell out each step for me :-(
> 
>   (kgdb) p *zone
> No symbol "zone" in current context.
Do the "frame 9" before "p *zone".

> (kgdb) list *0xffffffff8067d3ee
> 0xffffffff8067d3ee is in uma_zalloc_arg (/usr/src/sys/vm/uma_core.c:1835).
> 1830                                ("uma_zalloc: Bucket pointer 
> mangled."));
> 1831                            cache->uc_allocs++;
> 1832                            critical_exit();
> 1833    #ifdef INVARIANTS
> 1834                            ZONE_LOCK(zone);
> 1835                            uma_dbg_alloc(zone, NULL, item);
> 1836                            ZONE_UNLOCK(zone);
> 1837    #endif
> 1838                            if (zone->uz_ctor != NULL) {
> 1839                                    if (zone->uz_ctor(item,  
> zone->uz_keg->uk_size,
> 
>   Is this that you were looking for?
No, see above.
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