#12688 BLOC 13.2.0: XO-4 13.2.0 build 7 runin hang

[Zarro Boogs per Child]

#12688: XO-4 13.2.0 build 7 runin hang
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           Reporter:  Quozl         |       Owner:                                   
               Type:  defect        |      Status:  new                              
           Priority:  blocker       |   Milestone:  13.2.0                           
          Component:  not assigned  |     Version:  Development build as of this date
         Resolution:                |    Keywords:                                   
        Next_action:  diagnose      |    Verified:  0                                
Deployment_affected:                |   Blockedby:                                   
           Blocking:                |  
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Comment(by shep):

 So the crash I got reminds me of the stack corruption bug of #12197
 (while the other logs attached by rsmith and wad do not, though suffering
 from #12197 did include lots of random inexplicable failures).

 In my crash with the previous line:

 {{{
 [27206.848127] Bluetooth: vendor=0x2df, device=0x911a, class=255, fn=2
 [27207.704365] Unable to handle kernel paging request at virtual address
 03033f04
 }}}

 And from an earlier resume, so we can see what the next line would
 normally be:

 {{{
 [27190.797931] Bluetooth: vendor=0x2df, device=0x911a, class=255, fn=2
 [27191.873034] mwifiex_sdio mmc0:0001:1: WLAN FW already running! Skip FW
 dnld
 }}}

 So the prime suspects for my crash are these modules:
 {{{
 btmrvl_sdio btmrvl mwifiex_sdio mwifiex
 }}}

 I have restarted runin on this machine, we'll see what happens.

 When I fixed #12197 I did look around a little bit within mwifiex for any
 similar misuse of the stack and didn't find any others. (But I could have
 missed one.)   I never did look at the btmrvl and btmrvl_sdio for such
 similar bugs.

-- 
Ticket URL: <http://dev.laptop.org/ticket/12688#comment:23>
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