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From: ohki@gssm.otsuka.tsukuba.ac.jp
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To: freebsd-bugs@FreeBSD.org
Subject: 2.0.5-ALPHA crashes with 'panic: vm_object_deallocate: ...'
Cc: ohki@gssm.otsuka.tsukuba.ac.jp
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Date: Wed, 07 Jun 1995 13:14:45 +0900
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Dear folks

 I'm using 2.0.5-ALPHA on the following system.

	CPU:	80486 DX2/66MHz
	Memory:	16MB
	Peripherals:
		IDE 340MB internal hard disk
		SCSI 2GB external hard disk (via AHA-1542Cx )
		elete 16 ether board

 This machine serves as a news server & a mail server,
 so, exports a partition which holds system mailbox.

 This machine tends to crash once a day or once an hour,
 so, I configured to make crash dump.
 From a crash dump, I obtained following backtrace.

Reading symbol data from /h0/ohki/crash/kernel.0...
(no debugging symbols found)...done.
IdlePTD 1cc000
panic: vm_object_deallocate: object deallocated too many times
current pcb at 1bce1c
(kgdb) bt
#0  0xf018ee90 in boot ()
#1  0xf0113683 in panic ()
#2  0xf0185a95 in vm_object_deallocate ()
#3  0xf015da59 in nfsrv_vrele ()
#4  0xf0153637 in nfsrv_link ()
#5  0xf015e613 in nfssvc_nfsd ()
#6  0xf015df1a in nfssvc ()
#7  0xf0193ef7 in syscall ()
(kgdb)