From owner-freebsd-alpha  Wed Nov  6 15:28:59 2002
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Date: Wed, 6 Nov 2002 15:28:48 -0800 (PST)
From: Matthew Jacob <mjacob@feral.com>
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To: Jeff Roberson <jroberson@chesapeake.net>
Cc: jeff@freebsd.org, alpha@freebsd.org, alc@freebsd.org,
	jhb@freebsd.org
Subject: Re: alpha: top of tree kernel blooie
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On Wed, 6 Nov 2002, Jeff Roberson wrote:
> >
> > Slab at 0xfffffc0016a55f78, freei 59 = 0.
> > panic: Duplicate free of item 0xfffffc0016a55620 from zone
> > 0xfffffc001fff3740(MAP ENTRY)
> >
> > cpuid = 2;
> > panic
> > Stopped at      Debugger+0x34:  zapnot  v0,#0xf,v0      <v0=0x0>
> > db> t
> > Debugger() at Debugger+0x34
> > panic() at panic+0x1a4
> > uma_dbg_free() at uma_dbg_free+0x170
> > uma_zfree_arg() at uma_zfree_arg+0x130
> > vm_map_entry_dispose() at vm_map_entry_dispose+0x44
> > vm_map_entry_delete() at vm_map_entry_delete+0x68
> > vm_map_delete() at vm_map_delete+0x32c
> > vm_map_remove() at vm_map_remove+0x64
> > exit1() at exit1+0x510
> > sys_exit() at sys_exit+0x58
> > syscall() at syscall+0x358
> > XentSys() at XentSys+0x64
> > --- syscall (1, FreeBSD ELF64, sys_exit) ---
> > --- user mode ---
> > db>
> >
> >
> > 4 processor SMP 4100, doing a make -j4 buildworld
> >
> >
> 
> Is this repeatable?  I'm still trying to get my 4100 up on current.  I
> heard from jhb that there are some alpha pmap races.  I wonder if this
> could be related?

I dunno. I got thru a buildworld by not doing -j4. I've restarted one
now at that level. Drew also suggested a couple of things to try

> 
> Alan, do you have any ideas?
> 


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