From owner-freebsd-alpha  Wed Nov  6 15:29:50 2002
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Date: Wed, 6 Nov 2002 18:29:45 -0500 (EST)
From: Jeff Roberson <jroberson@chesapeake.net>
To: Matthew Jacob <mjacob@feral.com>
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, Matthew Jacob wrote:
>
> 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
>

Such as?

Thanks!
Jeff


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