#12466 NORM 4-firmw: SKU295 one-off hang in Open Firmware after Linux reboot

[Zarro Boogs per Child]

#12466: SKU295 one-off hang in Open Firmware after Linux reboot
-------------------------------------------+--------------------------------
           Reporter:  Quozl                |       Owner:  wmb at firmworks.com   
               Type:  defect               |      Status:  new                 
           Priority:  normal               |   Milestone:  4-firmware          
          Component:  ofw - open firmware  |     Version:  Development firmware
         Resolution:                       |    Keywords:                      
        Next_action:  diagnose             |    Verified:  0                   
Deployment_affected:                       |   Blockedby:                      
           Blocking:                       |  
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Old description:

> An SKU295 hung in Open Firmware after Linux reboot, just after printing
> ''releasing''.
>
> On pressing the keyboard interrupt key, a Data Abort was shown.  The Data
> Abort was not shown until that.
>
> Serial log:
>
> http://dev.laptop.org/~quozl/z/1TtVYE.txt
>
> Possibly related to #12183
>
> Registers:
> {{{
> ok .registers
>        r0       r1       r2       r3       r4       r5       r6       r7
>        e0        1       1c ffffffff fdac2f86 fdac2810        0 fda00080
>
>        r8    r9/up  r10/tos r11/rp/fp  r12/ip   r13/sp   r14/lr       pc
>  fdb3aea0 fda000a0 fb3fa9f0 fd9ff308 fdac264c fd9ff148 fdac23d0 fda05088
>
>        PSR = NzCvIFt_IRQ32
> ok select /keyboard q . head . tail .
> fd9fd280 fda0257c fda02580
> ok
> }}}

New description:

 An SKU295 hung in Open Firmware after Linux reboot, just after printing
 ''releasing''.

 On pressing the keyboard interrupt key, a Data Abort was shown.  The Data
 Abort was not shown until that.

 Serial log:

 http://dev.laptop.org/~quozl/z/1TtVYE.txt

 Possibly related to #12183

 Registers:
 {{{
 ok .registers
        r0       r1       r2       r3       r4       r5       r6       r7
        e0        1       1c ffffffff fdac2f86 fdac2810        0 fda00080

        r8    r9/up  r10/tos r11/rp/fp  r12/ip   r13/sp   r14/lr       pc
  fdb3aea0 fda000a0 fb3fa9f0 fd9ff308 fdac264c fd9ff148 fdac23d0 fda05088

        PSR = NzCvIFt_IRQ32
 ok select /keyboard q . head @ . tail @ .
 fd9fd280 63 63
 ok
 }}}

--

Comment(by Quozl):

 (edit description, dereferencing head and tail variables)

-- 
Ticket URL: <http://dev.laptop.org/ticket/12466#comment:1>
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