Re: [Fdutils] DMA cache consistency bug introduced in 2.6.28

[Mark Hounschell]

On 12/23/2009 01:01 PM, Linus Torvalds wrote:
> 
> 
> On Wed, 23 Dec 2009, Mark Hounschell wrote:
>>
>> I'll try the patch Linus provided now.
> 
> I doubt it matters - because if it did, it would matter for everybody, and 
> the HPET thing shouldn't make any difference at all.
> 
> [ Or rather, it should matter for everybody trying to format a specific 
>   format (without interleave it won't matter, and not all formats have any 
>   interleave - I think it was mainly used on 5.25" floppies and special 
>   formats). ]
> 
> Besides, maybe I was just mis-reading the code.
> 
> But getting some testing for the patch certainly won't hurt, so I'm not 
> going to argue against it any more ;)

Yea, that hosed it up pretty good. The very first track label sent out
caused some sort of timeout.

Dec 23 13:10:02 harley kernel:
Dec 23 13:10:02 harley kernel: floppy driver state
Dec 23 13:10:02 harley kernel: -------------------
Dec 23 13:10:02 harley kernel: now=9017 last interrupt=8117 diff=900 last
called handler=f73ce27d
Dec 23 13:10:02 harley kernel: timeout_message=lock fdc
Dec 23 13:10:02 harley kernel: last output bytes:
Dec 23 13:10:02 harley kernel:  0 90 4294899106
Dec 23 13:10:02 harley kernel: 1a 90 4294899106
Dec 23 13:10:02 harley kernel:  0 90 4294899106
Dec 23 13:10:02 harley kernel:  3 90 4294899106
Dec 23 13:10:02 harley kernel: c1 90 4294899106
Dec 23 13:10:02 harley kernel: 10 90 4294899106
Dec 23 13:10:02 harley kernel:  7 80 4294899106
Dec 23 13:10:02 harley kernel:  0 90 4294899106
Dec 23 13:10:02 harley kernel:  8 81 4294899106
Dec 23 13:10:02 harley kernel:  4 80 4294899106
Dec 23 13:10:02 harley kernel:  0 90 4294899106
Dec 23 13:10:02 harley kernel: e6 80 8007
Dec 23 13:10:02 harley kernel:  0 90 8007
Dec 23 13:10:02 harley syslog-ng[2651]: last message repeated 2 times
Dec 23 13:10:02 harley kernel:  1 90 8007
Dec 23 13:10:02 harley kernel:  2 90 8007
Dec 23 13:10:02 harley kernel: 12 90 8007
Dec 23 13:10:02 harley kernel: 1b 90 8007
Dec 23 13:10:02 harley kernel: ff 90 8007
Dec 23 13:10:02 harley kernel: last result at 8117
Dec 23 13:10:02 harley kernel: last redo_fd_request at 8117
Dec 23 13:10:02 harley kernel:
Dec 23 13:10:02 harley kernel: status=80
Dec 23 13:10:02 harley kernel: fdc_busy=1
Dec 23 13:10:02 harley kernel: cont=f73d58e4
Dec 23 13:10:02 harley kernel: current_req=(null)
Dec 23 13:10:02 harley kernel: command_status=-1
Dec 23 13:10:02 harley kernel:
Dec 23 13:10:02 harley kernel: floppy0: floppy timeout called
Dec 23 13:10:22 harley kernel:
Dec 23 13:10:22 harley kernel: floppy driver state
Dec 23 13:10:22 harley kernel: -------------------
Dec 23 13:10:22 harley kernel: now=15017 last interrupt=8117 diff=6900 last
called handler=f73ce27d
Dec 23 13:10:22 harley kernel: timeout_message=do wakeup
Dec 23 13:10:22 harley kernel: last output bytes:
Dec 23 13:10:22 harley kernel:  0 90 4294899106
Dec 23 13:10:22 harley kernel: 1a 90 4294899106
Dec 23 13:10:22 harley kernel:  0 90 4294899106
Dec 23 13:10:22 harley kernel:  3 90 4294899106
Dec 23 13:10:22 harley kernel: c1 90 4294899106
Dec 23 13:10:22 harley kernel: 10 90 4294899106
Dec 23 13:10:22 harley kernel:  7 80 4294899106
Dec 23 13:10:22 harley kernel:  0 90 4294899106
Dec 23 13:10:22 harley kernel:  8 81 4294899106
Dec 23 13:10:22 harley kernel:  4 80 4294899106
Dec 23 13:10:22 harley kernel:  0 90 4294899106
Dec 23 13:10:22 harley kernel: e6 80 8007
Dec 23 13:10:22 harley kernel:  0 90 8007
Dec 23 13:10:22 harley syslog-ng[2651]: last message repeated 2 times
Dec 23 13:10:22 harley kernel:  1 90 8007
Dec 23 13:10:22 harley kernel:  2 90 8007
Dec 23 13:10:22 harley kernel: 12 90 8007
Dec 23 13:10:22 harley kernel: 1b 90 8007
Dec 23 13:10:22 harley kernel: ff 90 8007
Dec 23 13:10:22 harley kernel: last result at 8117
Dec 23 13:10:22 harley kernel: last redo_fd_request at 8117
Dec 23 13:10:22 harley kernel:
Dec 23 13:10:22 harley kernel: status=80
Dec 23 13:10:22 harley kernel: fdc_busy=1
Dec 23 13:10:22 harley kernel: floppy_work.func=f73d03da
Dec 23 13:10:22 harley kernel: cont=f73d5274
Dec 23 13:10:22 harley kernel: current_req=(null)
Dec 23 13:10:22 harley kernel: command_status=-1
Dec 23 13:10:22 harley kernel:
Dec 23 13:10:22 harley kernel: floppy0: floppy timeout called
Dec 23 13:10:22 harley kernel: floppy.c: no request in request_don

Have to reboot now...

Mark
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