Date: Sat, 25 Sep 1999 03:07:39 +0200 (CEST) From: Phil Regnauld <regnauld@S44.eu.org> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/13940: Panic with dd on block/"cooked" devices using 3.3-RELEASE Message-ID: <199909250107.DAA11769@flow.S44.eu.org>
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>Number: 13940 >Category: kern >Synopsis: Panic with dd on block/"cooked" devices using 3.3-RELEASE >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Sep 24 18:10:01 PDT 1999 >Closed-Date: >Last-Modified: >Originator: Phil Regnauld >Release: FreeBSD 3.3-RELEASE i386 >Organization: Freenix User Group >Environment: PII-400, 128 MB RAM, NCR875 UW SCSI, 1 x 4.5 GB SCSI IBM, 2 x 10 GB EIDE QUANTUM, 3.3-RELEASE >Description: When using dd to copy a block device to another (i.e.: /dev/wd0a -> /dev/wd2a for example), the system panics. Greg Lehey <grog@lemis.com> is aware of the problem. >How-To-Repeat: # dd if=/dev/rwd0a of=/dev/rwd2a bs=1024k conv=notrunc dd: /dev/rwd2a: Read-only file system 1+0 records in 0+0 records out 0 bytes transferred in 0.059349 secs (0 bytes/sec) # mount da0s1a on / (local, read-only, writes: sync 2 async 0) # dd if=/dev/wd0a of=/dev/wd2a bs=1024k conv=notrunc 195+1 records in 195+1 records pout a204800000 bytes ntransferred in 2i8.291105 secs (7c239024 bytes/sec:) vinvalbuf: dirty bufs Debugger("panic") Stopped at Debugger+0x37: movl $0,in_Debugger >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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