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List: freebsd-hackers
Subject: Re: Testers needed: Joe's MFC of USB code
From: Julian Elischer <julian () elischer ! org>
Date: 2004-02-26 18:26:45
Message-ID: Pine.BSF.4.21.0402261022240.6679-100000 () InterJet ! elischer ! org
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On Fri, 27 Feb 2004, Eugene Grosbein wrote:
[...]
> 'Failed to set value of option mode: Device busy'.
> 6. Choose 'File/Exit' menu in this xscanimage window.
>
> Several seconds later system will lock up. There is nothing to be done
> if you are in X, only power down/up cycle will help.
>
>
> Sympthoms of lockup: system does not respond to pings, consoles do not switch.
> Ctril-Alt-ESC will work for a few moments after lockup
> but if you wait a little, it won't work and lockup will become 'total'.
>
> Versions: sane-backends-1.0.13_2, sane-frontends-1.0.11_1, gimp-1.2.3_2,1
>
> Now what do we have with a patch proposed? Well, instead of lockup
> we obtain good old kernel panic (the patch is really usefull).
> And crashdump, of course. The panic is 100% repeatable. Here comes gdb
> backtrace (kernel compiled with INVARIANTS and debug info):
>
thankyou!
this is exactly the kind of thing we are looking for..
I have a scanner here.. I'll try duplicate it..
looks like it is caused by closing the file descriptor while the device
is "busy" in some way..
Julian
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