[cc's snipped to linux-scsi ]

On Thu, 2017-08-10 at 17:05 +0000, man...@openmail.cc wrote:
> Hello,
> I'd like to report this rare panic I experienced today. I've been on  
> 4.12.3 since it was released and got this panic totally unexpected,  
> probably when terminating my WL compositor. I attach to this message a  
> capture of the screen. The problem occurred never before and never  
> after since, suggesting I will not be able to reproduce it easily.  
> Perhaps it means something to someone.
> Linux air 4.12.3 #4 SMP Fri Jul 28 12:07:06 CEST 2017 x86_64 Intel(R)  
> Core(TM)i5-6267U CPU @ 2.90GHz GenuineIntel GNU/Linux
> I don't know what additional information might be useful so if there  
> is anything else I should provide please tell me.
> Best regards,
> Cedric

Your stack trace indicates some kind of corruption in a kmem cache
used by the SCSI code, uncovered when the block queue was being freed.
Can you describe what SCSI hardware is connected to your machine?
A snippet of your boot messages showing the hardware probe would help.


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