From: Luca <kronos@kronoz.cjb.net>
To: linux-kernel@vger.kernel.org
Cc: axboe@suse.de
Subject: [2.6.14.2] Badness in as_insert_request at drivers/block/as-iosched.c:1519
Date: Sun, 20 Nov 2005 21:36:03 +0100 [thread overview]
Message-ID: <20051120203603.GA12216@dreamland.darkstar.lan> (raw)
Hi,
while playing an audio CD with XMMS using digital audio extraction the
kernel started flooding my logs (syslog writes my kernel logs synchronously)
with the following message:
cdrom: dropping to single frame dma
arq->state: 4
Badness in as_insert_request at drivers/block/as-iosched.c:1519
[<c0104027>] dump_stack+0x17/0x20
[<c0263b2c>] as_insert_request+0x5c/0x160
[<c025aa0a>] __elv_add_request+0x8a/0xc0
[<c025aa75>] elv_add_request+0x35/0x70
[<c025dc4b>] blk_execute_rq_nowait+0x3b/0x50
[<c025dcda>] blk_execute_rq+0x7a/0xb0
[<c028daad>] cdrom_read_cdda_bpc+0x14d/0x1b0
[<c028db68>] cdrom_read_cdda+0x58/0xc0
[<c028f025>] mmc_ioctl+0x735/0x930
[<c028e5c2>] cdrom_ioctl+0x9f2/0xca0
[<c028aabe>] idecd_ioctl+0x5e/0x70
[<c025ffa5>] blkdev_driver_ioctl+0x45/0x80
[<c0260157>] blkdev_ioctl+0x177/0x180
[<c0162a7b>] block_ioctl+0x1b/0x30
[<c016cf74>] do_ioctl+0x74/0x90
[<c016d109>] vfs_ioctl+0x59/0x1c0
[<c016d2a9>] sys_ioctl+0x39/0x60
[<c01031a5>] syscall_call+0x7/0xb
This happens both with my DVD unit and the CD/RW unit. The cause may be
a couple of skratches on the disk (my portable cd player is happy with
it though) and the drives behave fine with other audio disks. In the
dmesg there isn't any other error related to the cd (i.e. no medium
errors...)
As workaround I'm using noop scheduler for the unit...
Luca
--
Home: http://kronoz.cjb.net
K.R.O.N.O.S
Kinetic Replicant Optimized for Nocturnal Observation and Sabotage
next reply other threads:[~2005-11-20 20:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-20 20:36 Luca [this message]
2005-11-20 21:27 ` Jens Axboe
2005-11-21 22:55 ` Luca
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20051120203603.GA12216@dreamland.darkstar.lan \
--to=kronos@kronoz.cjb.net \
--cc=axboe@suse.de \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®