Date: Wed, 22 Feb 1995 16:53:00 GMT From: Charlie Root <root@mother.cdrom.com> To: bugs@FreeBSD.org Cc: julian@FreeBSD.org Subject: panic while accessing tape drive.. Message-ID: <199502221653.QAA00158@mother.cdrom.com>
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I'm getting this with my Archive Python 4mm drive these days. Kernel dump available on request (haven't got DODUMP in the kernel yet, but will remedy that). Kernel boot messages, just to show what I've got here: bt0 at 0x330 irq 10 on isa bt0 targ 0 lun 0: type 0(direct) fixed SCSI2 bt0 targ 0 lun 0: <SEAGATE ST15150N 0014> sd0: 4095MB (8388315 total sec), 3712 cyl, 21 head, 107 sec, bytes/sec 512 bt0 targ 2 lun 0: type 1(sequential) removable SCSI2 bt0 targ 2 lun 0: <EXABYTE EXB-85058SQANXR106M0> st0: density code 0x0, drive empty bt0 targ 4 lun 0: type 5(readonly) removable SCSI2 bt0 targ 4 lun 0: <TOSHIBA CD-ROM XM-3501TA3054> cd0(bt0:4:0): NOT READY asc:3a cd0: could not get size cd0: drive empty bt0 targ 6 lun 0: type 1(sequential) removable SCSI2 bt0 targ 6 lun 0: <ARCHIVE Python 28388-XXX4.98> st1: density code 0x13, 512-byte blocks, write-enabled Do a tar tvf /dev/rst1 and you get: st1: bad request, must be between 0 and 0 st1(bt0:6:0): Fatal trap 12: page fault while in kernel mode fault virtual address = 0xc00 fault code = supervisor read, page not present instruction pointer = 0x8:0xf011263f code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = Idle interrupt mask = bio panic: page fault syncing disks... I know that without a backtrace it's less than trivial to know exactly what's going on, but on the off-chance that this sparks a "oh, right!" kinda response I figured I'd post it. Jordan
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