Date: Tue, 20 Mar 2001 14:47:23 -0800 (PST) From: darkwalker@bigfoot.com To: freebsd-gnats-submit@FreeBSD.org Subject: kern/25953: Attempt to access CD changer results in panic Message-ID: <200103202247.f2KMlN829639@freefall.freebsd.org>
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>Number: 25953 >Category: kern >Synopsis: Attempt to access CD changer results in panic >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Mar 20 14:50:01 PST 2001 >Closed-Date: >Last-Modified: >Originator: Michael Lothian >Release: current as of March 20th >Organization: >Environment: FreeBSD stones.internal.dsmx.net 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Tue Mar 20 14:18:19 PST 2001 root@stones.internal.dsmx.net:/usr/src/sys/compile/STONES i386 >Description: NEC CD changer no longer works in FreeBSD (it did in -current 2 weeks ago) attempting to read any /dev/acd[0123]c device (even as non-root user) causes a panic.. No dump because it apparently kills the IDE driver too. Panic message says instruction pointer = 0xc0131ca0 nm -a kernel.debug | grep c0131: c0131a78 t acd_done c0131ac8 t acd_read_toc c0131fa8 t acd_select_done c0131f58 t acd_select_done1 c0131ea4 t acd_setchan c01317e8 T acd_start c0131784 t acdstrategy kernel dmesg looks different too, like it's putting the wrong device in for the changer (ata1-master instead of the previous acd0-3): -- ad0: 10991MB <Maxtor 91152D8> [22332/16/63] at ata0-master UDMA33 ata1-master: Aladdin: two atapi devices on this channel, no DMA ata1-master: CDROM with 4 CD changer <NEC CD-ROM DRIVE:252> at ata1-master PIO3 ata1-slave: Aladdin: two atapi devices on this channel, no DMA acd4: CD-RW <YAMAHA CRW8424E> at ata1-slave PIO4 -- The two drives on that IDE controller are the NEC changer (master) and a Yamaha CDRW (which works fine) >How-To-Repeat: Try using an ATAPI CD changer with -current >Fix: none known >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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