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SubjectRe: 2.4.17 Oops when trying to mount ATAPI CDROM

Manuel,

Would you be kind enough to be a little more specific on the hardware?
The attached devices bu make model and real vender if known.

Regards,

Andre Hedrick
Linux Disk Certification Project Linux ATA Development

On Sat, 2 Feb 2002, Manuel McLure wrote:

> Motherboard: ASUS P55T2P4 motherboard (Intel 430HX chipset)
> CPU: AMD K6-III 400MHz
> CD-ROM: No-name ATAPI CD-ROM installed as master on IDE channel 1 (hard
> drive is attached as master on IDE channel 0)
> Kernel: Official 2.4.17 and Red Hat 2.4.9-21
>
> Whenever I try to access the CD-ROM after boot, I get the following Oops:
>
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000063
> c0193030
> *pde = 00000000
> Oops: 0000
> CPU: 0
> EIP: 0010:[<c0193030>] Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010246
> eax: c02b7730 ebx: 00000000 ecx: 00000005 edx: 00000004
> esi: 00000005 edi: c02b7730 ebp: 00000001 esp: c0f51ee0
> ds: 0018 es: 0018 ss: 0018
> Process modprobe (pid: 1180, stackpage=c0f51000)
> Stack: c02b7730 00000286 c8db3960 c0189762 c02b7730 c02b7730 00000007
> c02b7730
> c3e03e00 c02b7730 00000134 c8db0a81 c02b7730 c8db3960 00000001
> c8dad000
> 00000001 00000015 00000001 c01165d7 c8db38a0 c0ab0000 000067a0
> c0ab2000
> Call Trace: [<c8db3960>] [<c0189762>] [<c8db0a81>] [<c8db3960>]
> [<c01165d7>]
> [<c8db38a0>] [<c8dad060>] [<c0106f13>]
> Code: 8a 15 63 00 00 00 83 e2 08 75 06 f6 43 6a 02 74 0c be 07 00
>
> >> EIP; c0193030 <config_drive_xfer_rate+d0/110> <=====
> Trace; c8db3960 <[ide-cd]ide_cdrom_driver+0/f>
> Trace; c0189762 <ide_register_subdriver+92/100>
> Trace; c8db0a81 <[ide-cd]init_module+a1/1af>
> Trace; c8db3960 <[ide-cd]ide_cdrom_driver+0/f>
> Trace; c01165d7 <sys_init_module+537/5f0>
> Trace; c8db38a0 <[ide-cd].LC156+0/d>
> Trace; c8dad060 <[ide-cd]__module_license+0/0>
> Trace; c0106f13 <system_call+33/40>
> Code; c0193030 <config_drive_xfer_rate+d0/110>
> 00000000 <_EIP>:
> Code; c0193030 <config_drive_xfer_rate+d0/110> <=====
> 0: 8a 15 63 00 00 00 mov 0x63,%dl <=====
> Code; c0193036 <config_drive_xfer_rate+d6/110>
> 6: 83 e2 08 and $0x8,%edx
> Code; c0193039 <config_drive_xfer_rate+d9/110>
> 9: 75 06 jne 11 <_EIP+0x11> c0193041
> <config_drive_xfer_rate+e1/110>
> Code; c019303b <config_drive_xfer_rate+db/110>
> b: f6 43 6a 02 testb $0x2,0x6a(%ebx)
> Code; c019303f <config_drive_xfer_rate+df/110>
> f: 74 0c je 1d <_EIP+0x1d> c019304d
> <config_drive_xfer_rate+ed/110>
> Code; c0193041 <config_drive_xfer_rate+e1/110>
> 11: be 07 00 00 00 mov $0x7,%esi
>
> After the Oops, lsmod shows:
>
> ide-cd 27072 3 (initializing)
>
> and the module is stuck at initializing.
> This CD-ROM worked fine on 2.2.20 as long as I booted with "hdc=noprobe
> hdc=cdrom" (otherwise I'd get "lost interrupt" messages). I have tried
> "ide=nodma" with no effect, as well as trying with the "hdc=" options both
> on and off. Running "hdparm -d0 /dev/hdc" before trying the mount causes
> the same Oops.
>
> Any ideas?
>
> Thanks!
> --
> Manuel A. McLure KE6TAW | ...for in Ulthar, according to an ancient
> <manuel@mclure.org> | and significant law, no man may kill a cat.
> <http://www.mclure.org> | -- H.P. Lovecraft
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