From owner-freebsd-stable@FreeBSD.ORG  Tue Mar 31 23:32:50 2009
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Date: Wed, 1 Apr 2009 03:32:49 +0400 (MSD)
From: Dmitry Morozovsky <marck@rinet.ru>
To: Alexander Motin <mav@freebsd.org>
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	(woozle.rinet.ru [0.0.0.0]); Wed, 01 Apr 2009 03:32:49 +0400 (MSD)
Cc: stable@freebsd.org
Subject: Re: RELENG_7 ata panic on atacontrol attach
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On Wed, 1 Apr 2009, Alexander Motin wrote:

AM> Dmitry Morozovsky wrote:
AM> > Hi there colleagues,
AM> > 
AM> > atapci3: <nVidia nForce MCP55 SATA300 controller> port
AM> > 0xbc00-0xbc07,0xb880-0xb883,0xb800-0xb807,0xb480-0xb483,0xb400-0xb40f mem
AM> > 0xefcb3000-0xefcb3fff irq 23 at device 5.2 on pci0
AM> > 
AM> > 
AM> > atacontrol detach ata7
AM> > - insert ATA disk (ad14)
AM> > atacontrol attach ata7
AM> > 
AM> > pinics with Fatal trap 12: page fault while in kernel mode
AM> 
AM> Any kernel verbose messages before it?

Nope. Just

ata7: [ITHREAD]^M
^M
^M
Fatal trap 12: page fault while in kernel mode^M
cpuid = 0; apic id = 00^M
fault virtual address   = 0x28^M
fault code              = supervisor read, page not present^M
instruction pointer     = 0x20:0xc055b69c^M
stack pointer           = 0x28:0xfcb0aabc^M
frame pointer           = 0x28:0xfcb0aaf8^M
code segment            = base 0x0, limit 0xfffff, type 0x1b^M
                        = DPL 0, pres 1, def32 1, gran 1^M
processor eflags        = interrupt enabled, resume, IOPL = 0^M
current process         = 3725 (atacontrol)^M
trap number             = 12^M
panic: page fault^M

and approx 15 seconds of wait between ata channel detection and the panic.

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck@FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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