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Date:      Wed, 10 Dec 2003 14:15:11 -0800
From:      Sean Chittenden <seanc@FreeBSD.org>
To:        current@FreeBSD.org
Subject:   Install panic w/ 2003-12-09 jpsnap...
Message-ID:  <20031210221511.GA77262@perrin.nxad.com>

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During install, I picked up the following panic shortly after
formatting and during chunk 4 of the base dist.  :-/  -sc

kernel: type 12 trap, code=0
Stopped at   _mtx_assert=0x4e:	movl	0x1c(%ebx0,%eax
db> trace
_mtx_asssert(0,1,c0877786,63e,1000) at _mtx_assert+0x4e
vm_page_set_invalid(c17f0c30,0,1000,554,0) at vm_page_set_invalid+0x35
brelse(c8010b88,0,ce893b90,c336f480,c3075c80,ce893bc4,346,c0865d8b0 at softdep_dissk_io_initiation+0xc4
spec_xtrategy(c3372924,c8010818,d5b,c0865d8b,c8010818) at spec_xstrategy+0x117
spec_specstrategy(ce893bf8,f4,c179f6d8,4,c8010818) at spec_specstrategy+0x72
ufs_strategy()
ufs_vnoperate()
bwrite()
vfs_bio_awrite()
fluusshbufqueues()
buf_daemon()
fork_exit()
fork_trampoline()
--- trap 0x1, eip = 0, esp = 0xce893d7c, ebp = 0 ---
db> where 0xce893d7c

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0x0
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xc06a692e
stack pointer		= 0x10:0xce8937f0
frame pointer		= 0x10:0xce8937f4
code segment		= bases 0x0, limit 0xfffff, type 0x1b
			= DBL 0, pres 1 def32 1, gran 1
processor eflags	= resume, IOPL = 0
current process		= 53 (bufdaemon)

I didn't copy the args, but it's easy enough for me to reproduce if
they're valuable.  Bah, If I disable ACPI then I can complete the
install.  About halfway through the install, however, I get a LOR and
the screen quickly trounces most of it.  It looked like it was in the
VM.  Is there any chance we could redirect this kind of stuff to the
debugging scree?  The LOR looked like it was in the VM.  In the
release, are we going to disable ACPI by default?  I know witness gets
disabled, but it may be prudent.  -sc

-- 
Sean Chittenden



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