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  • #1367
Closed
Open
Issue created Sep 25, 2019 by Bugzilla Migration User@bugzilla-migration

[SKL/Iris] Random asserts in SynMark Multithread test: "pipe_reference_described: Assertion `count != -1' failed"

Submitted by Eero Tamminen

Assigned to Intel 3D Bugs Mailing List

Link to original bug (#111748)

Description

Setup:

  • HW: SKL GT2 i5-6600K
  • OS: Ubuntu 18.04
  • SW: Git versions of drm-tip kernel, X server, SynMark2 v7.0
  • Mesa: 68820007 (2019-09-18 15:16:36 radv: fix loading 64-bit GS inputs)

Test-case:

  • Run multiple times: ./synmark2 OglMultithread

Expected outcome:

  • Works fine, as with i965 driver

Actual outcome:

  • Half of the runs hit following assert: src/gallium/auxiliary/util/u_inlines.h:87:pipe_reference_described: Assertion `count != -1' failed.

Because of bug 111385, I don't know when this issue started. That may also have been affected by enabling VT-d (which allows kernel to enable GPU IOMMU).

Version: git

See also

  • https://bugs.freedesktop.org/show_bug.cgi?id=111385
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