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Date: 24 Feb 2003 01:23:16 -0000
From: sm@mitradata.com
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To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: panic: ufsdirhash_lookup: bad offset in hash array
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>Number:         48609
>Category:       kern
>Synopsis:       panic: ufsdirhash_lookup: bad offset in hash array
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Feb 23 17:30:09 PST 2003
>Closed-Date:    Mon Jul 14 03:57:27 PDT 2003
>Last-Modified:  Mon Jul 14 03:57:27 PDT 2003
>Originator:     Supriya Mitra <sm@mitradata.com>
>Release:        FreeBSD 4.6-STABLE i386
>Organization:
>Environment:
System: FreeBSD bluewasp.waspware.com 4.6-STABLE FreeBSD 4.6-STABLE #0: Sun Aug 4 16:22:19 CEST 2002 dront@bluewasp.waspware.com:/usr/obj/usr/src/sys/BLUEWASP i386
UFS_DIRHASH enabled in kernel. 
CPU: AMD Athlon(tm) XP 1600+ (1399.34-MHz 686-class CPU)
real memory  = 1073741824 (1048576K bytes)
asr0: <Adaptec Caching SCSI RAID> mem 0xda000000-0xdbffffff irq 12 at device 8.1 on pci0
asr0: major=154
asr0: ADAPTEC 2400A FW Rev. 370L, 4 channel, 256 CCBs, Protocol I2O
da0: <ADAPTEC RAID-10 370L> Fixed Direct Access SCSI-2 device
da0: Tagged Queueing Enabled
da0: 117288MB (240205824 512 byte sectors: 255H 63S/T 14952C)


>Description:
kernel panics since freebsd kernel 4.2, on average of every 20 days  i get
/kernel: panic: ffs_clusteralloc: map mismatch
/kernel: panic: ufsdirhash_lookup: bad offset in hash array
or
/kernel: panic: ufsdirhash_lookup: bad offset in hash array
/kernel: syncing disks... 19 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
/kernel: giving up on 1 buffers
and then automatic reboot
often happens during syste mload. but cannot reproduce the panic myself.
 	
>How-To-Repeat:
	
        don't know, it just happens
>Fix:
        don't know how to fix. will try turning off UFS_DIRHASH and
        update kernel. (have tried updating kernel since 4.2 but
        doesn't work)

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: kris 
State-Changed-When: Mon Jul 14 03:57:06 PDT 2003 
State-Changed-Why:  
Superceded by kern/51016 

http://www.freebsd.org/cgi/query-pr.cgi?pr=48609 
>Unformatted:
