From owner-freebsd-current  Sat Mar 23  0:27:58 2002
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Date: Sat, 23 Mar 2002 03:26:04 -0500
From: Chris <kingsqueak@kingsqueak.org>
To: Lamont Granquist <lamont@scriptkiddie.org>
Cc: freebsd-current@FreeBSD.ORG
Subject: Re: SMP ffs_mountfs() broken?
Message-ID: <20020323082604.GA2644@kingsqueak.org>
References: <F91M67CpkzacHbb7i8s0001c71e@hotmail.com> <20020322230415.G123-100000@coredump.scriptkiddie.org>
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Which mobo/chipset ? 

* Lamont Granquist <lamont@scriptkiddie.org> [020323 02:14]:
> 
> I just cvsupped about an hour ago, built world and built a kernel that was
> GENERIC with 486/586 turned off and SMP and IOAPIC turned on.  It crashed
> while trying to mount root.  Apologies for mistakes in the following since
> I don't have a serial console and had to write it down:
> 
> <normal da0 SCSI adaptor dmesg output>
> Mounting root from ufs:/dev/ad0s1a
> SMP AP CPU #1 Launched!
> kernel trap 12 with interrupts diabled
> panic: blockable sleep lock (sleep mutex) Giant @ ../../../i386/i386/trap.c:706
> cpuid = 1; lapic.id = 01000000
> Debugger("panic")
> Stopped at Debugger+0x41: xorl %eax, %eax
> 
> trace showed the watchdog trap and then:
> 
> _mtx_lock_sleep
> _mtx_lock_flags
> vn_lock
> spec_open
> ffs_mountfs
> ffs_mount
> ufs_mountroot_try
> ufs_mountroot
> start_init
> fork_exit
> fork_trampoline
> 
> (sorry for eliminating all the args and such, but that's a lot of hex
> numbers to write down by hand -- if anyone requests i'll see what i can do
> about getting it off the serial port..)
> 
> I've never had this machine successfully running 5.0 with SMP, this was my
> first attempt.  My machine is:
> 
> 2 x 1.4GHz K7 MP1600+
> 512MB crucial ECC
> Adaptec 39160
> Seagate 36GB drive (not used for my 5.0 box)
> 13GB IBM UDMA66 drive (5.0 is installed on this)
> Geforce2/MX
> Soundblaster
> 
> I'll try to see if this was due to the cvsup or due to SMP.  I've got a UP
> kernel from a few weeks ago that works fine.
> 
> 
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