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Date:      Wed, 21 Oct 1998 16:35:11 -0400
From:      Christopher Masto <chris@netmonger.net>
To:        freebsd-current@FreeBSD.ORG
Subject:   Re: Panic starting X with current kernel?
Message-ID:  <19981021163511.A16058@netmonger.net>
In-Reply-To: <19981021161042.A14475@netmonger.net>; from Christopher Masto on Wed, Oct 21, 1998 at 04:10:42PM -0400
References:  <19981021161042.A14475@netmonger.net>

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On Wed, Oct 21, 1998 at 04:10:42PM -0400, Christopher Masto wrote:
> I just cvsupped a couple of hours ago and ran a make world and built
> a new kernel.  Now I get a panic when starting X:
> 
> panic: vm_page_insert: already inserted
> Debugger("panic")
> Stopped at      _Debugger+0x35: movb    $0,_in_Debugger.98
> db> trace
> _Debugger(f011b57f) at _Debugger+0x35
> _panic(f01c0c25,80000000,f0aaf000,f5393d8c,f01b6581) at _panic+0x6f
> _vm_page_insert(f0aaf000,f53904c8,f4000,f056d9f8,400000) at _vm_page_insert+0x1e
> 
> _dev_pager_getpages(f53904c8,f5393dd4,1,0,f5393dd8) at _dev_pager_getpages+0xc5
> _vm_pager_get_pages(f53904c8,f5393dd4,1,0) at _vm_pager_get_pages+0x1f
> _pmap_object_init_pt(f5327160,28400000,f53904c8,f4000,400000,1) at _pmap_object_
> init_pt+0xb9
> _vm_mmap(f5327100,f5393ee8,400000,3,7) at _vm_mmap+0x298
> _mmap(f5323340,f5393f94,2834343c,400000,f4000000) at _mmap+0x352
> _syscall(27,27,f4000000,400000,efbfdb38) at _syscall+0x187
> _Xint0x80_syscall() at _Xint0x80_syscall+0x2c
> 
> I can boot my previous kernel (Oct 13) and this panic doesn't occur.
> 
> I'm currently waiting for that machine to fsck so I can poke around.

I backed out dg's PG_TABLED removal and I'm no longer getting a panic.
I guess this means I'm only ignoring the real source of the problem,
but I don't think I have enough time today to learn the VM system and
figure out what's really going on.

If anyone is working on this, I will be glad to test anything.
-- 
Christopher Masto        Director of Operations  S   NetMonger Communications
chris@netmonger.net        info@netmonger.net   SSS  http://www.netmonger.net
                                                \_/
   My view of Microsoft is that they had two goals in the last 10 years:
   to copy the Macintosh and to copy Lotus' success in the applications
   business. And they accomplished those goals. Now, they're kind of
   lost. I've told Bill that I think it's in Microsoft's best interest if
   NeXT becomes successful because we'll give him something to copy for
   the rest of this decade.
   - STEVE JOBS

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