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Date:      Mon, 11 May 2020 15:25:26 +0200
From:      Christoph Kukulies <kuku@kukulies.org>
To:        freebsd-questions@freebsd.org
Subject:   Kernel panic while reading from at a cdrom
Message-ID:  <8D7D3A75-ACE4-407F-90C4-DF827A361A30@kukulies.org>

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I=E2=80=99m seeing these error messages in syslog:

(cd0:ata1:0:1:0): READ(10). CDB: 28 00 00 05 14 96 00 00 01 00=20
(cd0:ata1:0:1:0): CAM status: SCSI Status Error
(cd0:ata1:0:1:0): SCSI status: Check Condition
(cd0:ata1:0:1:0): SCSI sense: ILLEGAL REQUEST asc:64,0 (Illegal mode for =
this track)
(cd0:ata1:0:1:0): Error 6, Unretryable error
(cd0:ata1:0:1:0): cddone: got error 0x6 back
(cd0:ata1:0:1:0): READ(10). CDB: 28 00 00 05 14 97 00 00 01 00=20
(cd0:ata1:0:1:0): CAM status: SCSI Status Error
(cd0:ata1:0:1:0): SCSI status: Check Condition
(cd0:ata1:0:1:0): SCSI sense: ILLEGAL REQUEST asc:64,0 (Illegal mode for =
this track)
(cd0:ata1:0:1:0): Error 6, Unretryable error
(cd0:ata1:0:1:0): cddone: got error 0x6 back


I was dd=E2=80=99ing a whole CD to a file while the panic happened. This =
happened twice after another.
The MB is an ASRock939A790GMH. Possibly the CDROM drive , a CREATIVE 52x =
is the culprit. DMA is =E2=80=9EAuto=E2=80=9C in the BIOS and the device =
can do DMA, not Ultra DMA.=20

Before I kick out the drive and get me a sata DVD drive, would it help =
analyzing something. kernel core dump?

=E2=80=94
Christoph




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