#9958 NORM 1.5-sof: camera driver ooops

Zarro Boogs per Child bugtracker at laptop.org
Sun Jan 24 15:48:16 EST 2010


#9958: camera driver ooops
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           Reporter:  rsmith    |       Owner:  corbet                           
               Type:  defect    |      Status:  new                              
           Priority:  normal    |   Milestone:  1.5-software-later               
          Component:  kernel    |     Version:  Development build as of this date
         Resolution:            |    Keywords:                                   
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:            |   Blockedby:                                   
           Blocking:            |  
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Comment(by corbet):

 I remain unable to reproduce any of these, of course.

 That said, oops4 and oops_os200 are both clearly use-after-free errors on
 close; what's going on is that the IRQ thread isn't getting the message
 and is still trying to pass frames through.  That was a definite screwup
 on my part, which I have just fixed.

 oops3 is different; we have a close which is failing while waiting for a
 DMA operation to complete.  That shouldn't happen, but, in any case, the
 code shouldn't wait forever; there comes a point where you can assume it's
 simply not going to happen.

 Fixes have been pushed to my tree on git.lwn.net.  Please let me know if
 things behave any better for you now?

-- 
Ticket URL: <http://dev.laptop.org/ticket/9958#comment:17>
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