#11471 HIGH 1.75-so: Crash in mmp2_pcm_open and related code

[Zarro Boogs per Child]

#11471: Crash in mmp2_pcm_open and related code
-------------------------------------+--------------------------------------
           Reporter:  greenfeld      |       Owner:  saadia                           
               Type:  defect         |      Status:  new                              
           Priority:  high           |   Milestone:  1.75-software                    
          Component:  kernel         |     Version:  Development build as of this date
         Resolution:                 |    Keywords:                                   
        Next_action:  test in build  |    Verified:  0                                
Deployment_affected:                 |   Blockedby:                                   
           Blocking:                 |  
-------------------------------------+--------------------------------------

Comment(by greenfeld):

 I'm not certain if flooding the kernel dmesg buffer with messages counts
 as a "fix".

 Seen in 11.3.1 os19.

 {{{
 ...
 [ 1190.927639] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.932052] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.936469] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.940884] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.945300] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.949713] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.949722] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.958545] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.958554] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.967373] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.971789] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.971798] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.980618] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.980627] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.989450] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.989460] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.998280] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1190.998289] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1191.002696] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1191.011531] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1191.015937] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1191.020363] mmp2 spurious d2 int pb 4/0 ca 5/8
 [ 1191.024769] mmp2 spurious d2 int pb 4/0 ca 5/8
 ...
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/11471#comment:11>
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