anyone seen this problem..

[Adam Kropelin]

Julian Elischer wrote:
> Julian Elischer wrote:
>
>>
>> I'm working in 4.10++  plus a few MFC patches..
>>
>> One of our applications regularly crashes when using a uhid device.
>
>
> ^^^^^ ugen

I've been able to panic the kernel fairly easily using ugen (this is on 
5.2.1 and 5.3). The trigger seems to be a length mismatch where the device 
returns a different amount of data than was expected for a particular 
transfer. I'm suspecting memory corruption since it will often fail the 
ioctl a few times before actually panicing.

I am not sufficiently clued to obtain a kernel backtrace like you did. I 
presume I need to configure something to dump me into a kernel debugger upon 
panic instead of the automatic reboot I'm currently getting. I'll read up on 
such things and see if I can determine how closely my situation matches 
yours.

--Adam