Re: 2.6.14.2 - Badness in as_insert_request at drivers/block/as-iosched.c:1519

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Anders Karlsson wrote:

>Morning,
>
>I am getting loads of these:
>
>Nov 21 08:10:19 lenin kernel: [17304475.764000] arq->state: 4
>Nov 21 08:10:19 lenin kernel: [17304475.764000] Badness in
>as_insert_request at drivers/block/as-iosched.c:1519
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[as_insert_request+109/464] as_insert_request+0x6d/0x1d0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[__elv_add_request+155/224] __elv_add_request+0x9b/0xe0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[elv_add_request+43/64] elv_add_request+0x2b/0x40
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[blk_execute_rq_nowait+69/96] blk_execute_rq_nowait+0x45/0x60
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[blk_execute_rq+123/224] blk_execute_rq+0x7b/0xe0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[blk_end_sync_rq+0/48] blk_end_sync_rq+0x0/0x30
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[bio_phys_segments+39/48] bio_phys_segments+0x27/0x30
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[blk_rq_bio_prep+133/176] blk_rq_bio_prep+0x85/0xb0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[cdrom_read_cdda_bpc+403/512] cdrom_read_cdda_bpc+0x193/0x200
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[cdrom_read_cdda+91/192] cdrom_read_cdda+0x5b/0xc0
>Nov 21 08:10:19 lenin kernel: [17304475.764000]  [mmc_ioctl+2098/2784]
>mmc_ioctl+0x832/0xae0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[__wake_up_common+67/112] __wake_up_common+0x43/0x70
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[scsi_cmd_ioctl+191/1328] scsi_cmd_ioctl+0xbf/0x530
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[n_tty_receive_buf+225/3888] n_tty_receive_buf+0xe1/0xf30
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[log_wait_commit+202/256] log_wait_commit+0xca/0x100
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[fast_clear_page+10/80] fast_clear_page+0xa/0x50
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[buffered_rmqueue+398/480] buffered_rmqueue+0x18e/0x1e0
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[generic_ide_ioctl+60/1408] generic_ide_ioctl+0x3c/0x580
>Nov 21 08:10:19 lenin kernel: [17304475.764000] 
>[cdrom_ioctl+230/3536] cdrom_ioctl+0xe6/0xdd0
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [pty_write+103/128]
>pty_write+0x67/0x80
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [idecd_ioctl+133/160]
>idecd_ioctl+0x85/0xa0
>Nov 21 08:10:20 lenin kernel: [17304475.764000] 
>[blkdev_ioctl+304/432] blkdev_ioctl+0x130/0x1b0
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [block_ioctl+43/48]
>block_ioctl+0x2b/0x30
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [do_ioctl+50/144]
>do_ioctl+0x32/0x90
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [vfs_ioctl+96/496]
>vfs_ioctl+0x60/0x1f0
>Nov 21 08:10:20 lenin kernel: [17304475.764000]  [sys_ioctl+136/160]
>sys_ioctl+0x88/0xa0
>Nov 21 08:10:20 lenin kernel: [17304475.764000] 
>[sysenter_past_esp+84/117] sysenter_past_esp+0x54/0x75
>
>I flipped the drive (LG GSA4167B DVD±RW) into udma2 mode, enabled udma
>and started reading from an audio disc with cdparanoia. I had to abort
>the read (^C in shell where running cdparanoia) and noticed the system
>became slower for a while. When checking the system logs, I spotted
>these stacktraces.
>  
>

I reported a similar problem while ripping a CD with cdparanoia on
2.6.14 on a
thinkpad R52 (http://lkml.org/lkml/2005/11/10/286). But I didn't get any
answer.
I hope you will get some. Good luck :)

Brice

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