Bug 107651

Summary:	Assertion in intel_batchbuffer.c aborts startup of xorg-server
Product:	DRI	Reporter:	ad PC <adpc>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	RESOLVED WORKSFORME	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	critical
Priority:	medium	CC:	intel-gfx-bugs
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:	Triaged
i915 platform:	BDW	i915 features:

Description ad PC 2018-08-21 20:29:39 UTC

The following assertion aborts the startup of xorg-server:

Xorg: ../mesa-18.2.0-rc2/src/mesa/drivers/dri/i965/intel_batchbuffer.c:724: execbuffer: Assertion `!(bo->kflags & EXEC_OBJECT_PINNED)' failed.

Here the output of `lcpci -vv`:

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller])
	DeviceName:  Onboard IGD
	Subsystem: Dell HD Graphics 5500
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 43
	Region 0: Memory at f6000000 (64-bit, non-prefetchable) [size=16M]
	Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at f000 [size=64]
	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: i915

Please let me know, if you need further info.

Comment 1 Kenneth Graunke 2018-08-22 06:32:36 UTC

Yeah, that's pretty severely broken...what kernel are you using?

Comment 2 ad PC 2018-08-22 18:34:25 UTC

My kernel is 4.9.24-hardened. Should I try 4.18.0, for example?

Comment 3 Lionel Landwerlin 2018-12-12 11:54:36 UTC

(In reply to ad PC from comment #2)
> My kernel is 4.9.24-hardened. Should I try 4.18.0, for example?

Yes, if you can't reproduce on a more recent kernel, we can reassign to the i915 kernel driver. Thanks!

Comment 4 Lionel Landwerlin 2018-12-12 12:48:29 UTC

I could be wrong, but I think this issue might have been fixed by :

commit 172ae5b4c8c104af56804bf2406014849ed6fa37
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Dec 5 14:29:37 2016 +0000

    drm/i915: Fix i915_gem_evict_for_vma (soft-pinning)


Unfortunately, this commit doesn't look like it made it to 4.9 :(

Could the i915 team look into whether this needs to happen?

Comment 5 ad PC 2019-05-26 15:20:03 UTC

I cannot reproduce it on a more recent kernel (e.g. 4.20.13 or 5.1.4). So it seems to be fixed there.

Comment 6 Lakshmi 2019-06-05 08:25:01 UTC

Reporter, if this issue is not seen on latest kernel, can I close this bug?

Comment 7 ad PC 2019-07-03 16:55:40 UTC

Yes We Can ;-)

Comment 8 Lakshmi 2019-07-05 05:39:16 UTC

Based on the feedback closing this issue as WORKSFORME.

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