From owner-freebsd-current  Sat Jul  3 10:48:57 1999
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Date: Sat, 03 Jul 1999 10:48:52 -0700
From: Doug <Doug@gorean.org>
Organization: Triborough Bridge & Tunnel Authority
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To: freebsd-current@freebsd.org
Subject: panic: ffs_blkfree: freeing free block (Was: Re: More make world fun)
References: <377DE1B2.BDB78343@gorean.org>
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Doug wrote:
> 
>         Now that things are supposed to be fixed up in the world build I decided
> to finish what I started this morning. The build completed ok, but when it
> started the install phase it got part way through, then the machine
> spontaneously rebooted itself (first time ever on a make world for me,
> wheeee).
> 
>         When the system came back just about everything failed, including /bin/sh,
> which means the system is hose-ed. 

	Ok, I decided to try and find out what happened with this, and using csh
at the single user prompt I was able to get things to the point where I
could view logs, etc. There was nothing in /var/log/messages at all, and
the log of the build stopped at the point where it was installing libc_r.
However when I ran 'make installworld' this time it ran past the libc_r no
problem, but eventually I got a panic. Here is the info from the debugger:

dev=0x2fb0e, block = 9432, fs = /usr
panic: ffs_blkfree: freeing free block
Debugger("panic")
Stopped at Debugger+0x37: movl $0, in Debugger

trace:

Debugger()
panic()
ffs_blkfree()
ffs_truncate()
ufs_inactive()
ufs_vnoperate()
vput()
unlink()
syscall()
Xint0x80_syscall()

	IIRC this system was last upgraded (world and kernel) on the first, maybe
june 30th. (I can get the exact date if needed.) It's all scsi, adaptec
2940UW adapter, IBM DCAS 4 gig disk, no softupdats. Let me know if there is
anything else to do here. I'll be out most of the day today, but I'll be
back tonight.

HTH,

Doug


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