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Date: Tue, 1 Nov 2005 07:59:12 +0100
From: Jens Axboe <axboe@suse.de>
To: Bongani Hlope <bonganilinux@mweb.co.za>
Cc: linux-kernel@vger.kernel.org, piggin@cyberone.com.au
Subject: Re: Badness in as_insert_request at drivers/block/as-iosched.c:1519
Message-ID: <20051101065911.GD19267@suse.de>
References: <200510312240.49228.bonganilinux@mweb.co.za>
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On Mon, Oct 31 2005, Bongani Hlope wrote:
> Hi Jens,
> 
> When I rip a music CD I get these for each track that is ripped. 
> 
> 
>  Badness in as_insert_request at drivers/block/as-iosched.c:1519
> 
>  Call Trace:<ffffffff80281b0f>{as_insert_request+111} 
> <ffffffff80278689>{__elv_add_request+105}
> <ffffffff802787a8>{elv_add_request+72} 
> <ffffffff8027b9f6>{blk_execute_rq_nowait+54}
> <ffffffff8027bac8>{blk_execute_rq+184} 
> <ffffffff80184ee7>{bio_phys_segments+23}
> <ffffffff8027b67b>{blk_rq_bio_prep+59} 
> <ffffffff8817226b>{:cdrom:mmc_ioctl+1275}
> <ffffffff8817c51e>{:ide_cd:cdrom_queue_packet_command+78}
> <ffffffff8028d838>{ide_init_drive_cmd+24} 
> <ffffffff8817d47f>{:ide_cd:cdrom_check_status+127}
> <ffffffff8015eae0>{__rmqueue+192} <ffffffff8015f200>{buffered_rmqueue+544}
> <ffffffff8028050d>{scsi_cmd_ioctl+1997} <ffffffff80341841>{thread_return+193}
> <ffffffff8010c552>{__switch_to+50} <ffffffff80341841>{thread_return+193}
> <ffffffff80342f73>{_spin_unlock_irqrestore+19} 
> <ffffffff8015e8f6>{free_pages_bulk+582}
> <ffffffff88173e51>{:cdrom:cdrom_ioctl+2529} 
> <ffffffff80166aa3>{release_pages+387}
> <ffffffff8817ebb6>{:ide_cd:idecd_ioctl+102} 
> <ffffffff8027dc88>{blkdev_driver_ioctl+104}
> <ffffffff8027e40b>{blkdev_ioctl+1883} 
> <ffffffff8016dc67>{__handle_mm_fault+407}
> <ffffffff80342f73>{_spin_unlock_irqrestore+19} 
> <ffffffff801fb261>{__up_read+161}
> <ffffffff80344b9d>{do_page_fault+1213} <ffffffff80188b3b>{block_ioctl+27}
> <ffffffff80193aee>{do_ioctl+62} <ffffffff80193e1b>{vfs_ioctl+715}
> <ffffffff80193e8d>{sys_ioctl+77} <ffffffff8010dd5e>{system_call+126}

With what kernel? And what program are you using? Is dma turned on?

Please be a little more specific!

-- 
Jens Axboe

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