Re: rmmod problem/2.1.102 question

Rafal Wierzbicki (rafal@boa1.dcss.McMaster.CA)
Mon, 18 May 1998 19:44:44 -0400 (EDT)


On Mon, 18 May 1998, Bill Hawes wrote:

>
> Hi Ralf,
>
> I made some changes to the isofs (CDROM) fs that should have fixed some
> "trying to free free buffer" problems, so I'd like to find out what's
> causing the message you report. Do you know if it's definitely
> associated with the CD-ROM, or does it just show up next in the syslog?
> Do you have a CDROM in the drive when the message is reported?
>
> The double-free buffer message can be a problem, so it's important to
> track it down. Please let me know if you get any further clues ...
>
> Regards,
> Bill
>
>
I checked my syslog file more thoroughly and found this...

May 11 18:41:00 librum kernel: VFS: brelse: Trying to free free buffer
May 11 18:51:32 librum kernel: kmod: waitpid(125,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(127,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(129,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(130,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(132,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(133,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(134,NULL,0) failed, returning
-512.
May 11 18:51:32 librum kernel: kmod: waitpid(136,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(140,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(142,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(143,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(144,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(148,NULL,0) failed, returning
-512.
May 11 18:51:33 librum kernel: kmod: waitpid(150,NULL,0) failed, returning
-512.

May 12 13:25:18 librum kernel: VFS: brelse: Trying to free free buffer
May 12 16:15:37 librum kernel: hdc: cdrom_decode_status: status=0x51 {
DriveReady SeekComplete Error }
May 12 16:15:37 librum kernel: hdc: cdrom_decode_status: error=0x30
May 12 16:15:40 librum kernel: hdc: cdrom_decode_status: status=0x51 {
DriveReady SeekComplete Error }
May 12 16:15:44 librum kernel: hdc: ATAPI reset complete
---lots of these follow---
May 12 16:16:08 librum kernel: hdc: cdrom_decode_status: error=0x30
May 12 16:16:08 librum kernel: end_request: I/O error, dev 16:00 (ide),
sector 1092612
May 12 16:16:08 librum kernel: end_request: buffer-list destroyed
May 12 16:16:20 librum kernel: hdc: irq timeout: status=0xd8 { Busy }
May 12 16:17:08 librum kernel:

There is a CD in the drive, and it works ok, i mean, i can access it
without any problems. This problem started persisting when i installed
DOSEMU (0.66.7).

I have ide-cd, cdrom and isofs compiled as modules.

I hope that helps a bit, i'll try to get the "free free buffer" message to
appear again and see under what conditions it appears.

Ralf Wierzbicki

--
<wierzbr@mcmaster.ca>
<http://mcss.mcmaster.ca/~wierzbr>

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu