Re: Kernel Oops with 2.6.15

[Ralf Müller <ralf@bj-ig.de>]

Albert Lee schrieb:
> It looks like the command is running in PIO polling thread.
> The timeout handler is called and the qc is cleared.
> So, the PIO polling thread got NULL qc.
>
> Could you post more trace before the timeout occurs, thanks,

Sure. Here it is:

Jan  3 15:21:32 DatenGrab kernel: ata1: command timeout
Jan  3 15:21:32 DatenGrab kernel: ATA: abnormal status 0xFF on port 
0xE006821C
Jan  3 15:21:32 DatenGrab kernel: ata1: translated ATA stat/err 0xff/00 
to SCSI SK/ASC/ASCQ 0xb/47/00
Jan  3 15:21:32 DatenGrab kernel: ata1: status=0xff { Busy }
Jan  3 15:21:32 DatenGrab kernel: ATA: abnormal status 0xFF on port 
0xE006821C
Jan  3 15:21:32 DatenGrab kernel: ATA: abnormal status 0xFF on port 
0xE006821C
Jan  3 15:21:32 DatenGrab kernel: ATA: abnormal status 0xFF on port 
0xE006821C
Jan  3 15:21:32 DatenGrab kernel: ATA: abnormal status 0xFF on port 
0xE006821C
Jan  3 15:21:35 DatenGrab kernel: ata1: unknown timeout, cmd 0xb0 stat 0xff
Jan  3 15:21:35 DatenGrab kernel: ata1: translated ATA stat/err 0xff/00 
to SCSI SK/ASC/ASCQ 0xb/47/00
Jan  3 15:21:35 DatenGrab kernel: ata1: status=0xff { Busy }
Jan  3 15:21:35 DatenGrab kernel: Assertion failed! qc != 
NULL,drivers/scsi/libata-core.c,ata_pio_block,line=3216
Jan  3 15:21:35 DatenGrab kernel: Unable to handle kernel NULL pointer 
dereference at virtual address 00000014
Jan  3 15:21:35 DatenGrab kernel:  printing eip:
Jan  3 15:21:35 DatenGrab kernel: e02d9a3e
Jan  3 15:21:35 DatenGrab kernel: *pde = 00000000
Jan  3 15:21:35 DatenGrab kernel: Oops: 0000 [#1]

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