Bug 101019 - [BDW] Intel iris 6100 crash multiple time per day
Summary: [BDW] Intel iris 6100 crash multiple time per day
Status: CLOSED DUPLICATE of bug 99295
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium critical
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
Depends on:
Reported: 2017-05-12 09:17 UTC by Maël Lavault
Modified: 2017-07-27 16:50 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Kernel stack trace (5.88 KB, text/plain)
2017-05-12 09:17 UTC, Maël Lavault
no flags Details
Another one (4.91 KB, text/plain)
2017-05-12 12:08 UTC, Maël Lavault
no flags Details
New stack trace after fix (4.94 KB, text/plain)
2017-05-18 08:39 UTC, Maël Lavault
no flags Details

Description Maël Lavault 2017-05-12 09:17:52 UTC
Created attachment 131330 [details]
Kernel stack trace


I'm using fedora 26 with kernel 4.10.10 and my desktop freeze multiple time a day.
It mostly happen when doing intensive tasks.

Stacktrace is attached.
Comment 1 Maël Lavault 2017-05-12 12:08:36 UTC
Created attachment 131336 [details]
Another one
Comment 2 Chris Wilson 2017-05-13 08:13:30 UTC
Bad timing under mempressure, fixed in

commit dd19674bacba227ae5d3ce680cbc5668198894dc
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Feb 15 08:43:46 2017 +0000

    drm/i915: Remove bitmap tracking for used-ptes

*** This bug has been marked as a duplicate of bug 99295 ***
Comment 3 Dan Aloni 2017-05-13 14:17:26 UTC
Since dd19674bacba227ae5d3ce680cbc5668198894dc is for 4.12-rc, I have back-ported the fix to version 4.11 of the kernel.


Built Fedora RPMs for it: https://copr.fedorainfracloud.org/coprs/alonid/kernel-4.11-drmfix/, and currently running it on my laptop.

Can we review and get this into 'drm-intel-fixes'?
Comment 4 Maël Lavault 2017-05-15 08:34:59 UTC

Thanks a lot ! I'm testing your custom kernel with drm fix right now, I'll report how it goes.
Comment 5 Maël Lavault 2017-05-15 11:53:51 UTC
Seems to run fine until now, will test for a few more days to be sure.

I got an i915 related error though in the logs:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

Not sure if due to this patch or not.
Comment 6 Maël Lavault 2017-05-15 15:40:27 UTC
One full day without any freeze, haven't happen in a long time, really happy with the fix so far ! Thanks a lot !
Comment 7 Dan Aloni 2017-05-15 15:51:33 UTC
Good to hear! 

For me the problem is less frequent, so I was not sure yet if it is effective. I have some issues resuming from suspend but I am not sure they are related.
Comment 8 Maël Lavault 2017-05-18 08:39:38 UTC
Created attachment 131400 [details]
New stack trace after fix

Worked well for a few days, but I had a new freeze this morning.

So I agree with you, the fix only seems to make it much less frequent.

See attached stacktrace.

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