Bug 218944 - i915kms panics the kernel
Summary: i915kms panics the kernel
Status: Closed FIXED
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: CURRENT
Hardware: amd64 Any
: --- Affects Some People
Assignee: freebsd-bugs (Nobody)
URL:
Keywords: regression
Depends on:
Blocks:
 
Reported: 2017-04-28 21:34 UTC by Domagoj Stolfa
Modified: 2017-05-01 18:52 UTC (History)
0 users

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Description Domagoj Stolfa 2017-04-28 21:34:21 UTC 
After approximately 20th of April, running 12.0-CURRENT on the following CPUs has caused panics on kldloads:

Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz                                                                                                                                  
Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz                                                                                                                                  

I am however, unable to provide a crash dump, as whenever the kernel does panic, I am unable to see the cause of it(due to the driver overtaking my screen), as well as getting I would assume ENXIO when trying to call doadump().

Furthermore, I've observed damage to the hardware(namely, the laptop screen) on a Lenovo G500 potentially caused by this panic.

There has been a related post on the mailing lists as well: https://lists.freebsd.org/pipermail/freebsd-current/2017-April/065694.html.
Comment 1 Domagoj Stolfa 2017-05-01 18:52:39 UTC 
As indicated, this is fixed by r317561. Tested both CPUs. Furthermore, reports on the mailing lists indicate that the problem is resolved.