#6080 HIGH Never A: Bad mfg data crashes OFW

[Zarro Boogs per Child]

#6080: Bad mfg data crashes OFW
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 Reporter:  wmb at firmworks.com    |       Owner:  wmb at firmworks.com
     Type:  defect               |      Status:  new              
 Priority:  high                 |   Milestone:  Never Assigned   
Component:  ofw - open firmware  |     Version:  Q2D07            
 Keywords:                       |    Verified:  0                
 Blocking:                       |   Blockedby:                   
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 Albert Cahalan reported a problem in which, after upgrading his B4 from
 Q2C24 to Q2D08, the system would come up with a small black square on a
 white background, and not boot.  Furthermore, by holding down the 4-button
 salute, he could induce it to bail out to the ok prompt with a "Stack
 Underflow" message.

 We traced the problem to the fact that his mfg data is corrupted, probably
 as a result of using an early version of "$delete-tag".  There is a bug in
 OFWs mfg tag scanner that is triggered by that particular form of mfg data
 corruption.

 This bug exists in most D-series firmware - probably as early as D04,
 perhaps even earlier.

 It would only show up if the mfg data is bad in a specific way.

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Ticket URL: <http://dev.laptop.org/ticket/6080>
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