[Bug 89669] New: [SNB+]igt/drv_getparams fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89669

            Bug ID: 89669
           Summary: [SNB+]igt/drv_getparams fails
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 114457
  --> https://bugs.freedesktop.org/attachment.cgi?id=114457&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, new case

==kernel==
--------------------------
drm-intel-fixes/319c1d420a0b62d9dbb88104afebaabc968cdbfa
commit 319c1d420a0b62d9dbb88104afebaabc968cdbfa
Author: Xi Ruoyao <xry111 at outlook.com>
Date:   Thu Mar 12 20:16:32 2015 +0800

    drm/i915: Ensure plane->state->fb stays in sync with plane->fb

    plane->state->fb and plane->fb should always reference the same FB so
    that atomic and legacy codepaths have the same view of display state.
    However, there are some places in kernel code that directly set
    plane->fb and neglect to update plane->state->fb. If we never do a
    successful update through the atomic pipeline, the RmFB cleanup code
    will look at the plane->state->fb pointer, which has never actually
    been set to a legitimate value, and try to clean it up, leading to
    BUG's.

    Add a quick helper function to synchronize plane->state->fb with
    plane->fb and call it everywhere the driver tries to manually set
    plane->fb outside of the atomic pipeline. In this function, use
    drm_atomic_set_fb_for_plane instead of writing plane->state->fb
    directly to keep the reference count right.

==Bug detailed description==
-----------------------------
It fails on drm-intel-fixes kernel, works well on drm-intel-nightly kernel.

output:
IGT-Version: 1.10-ga172676 (x86_64) (Linux:
4.0.0-rc4_drm-intel-fixes_319c1d_20150317+ x86_64)
Test assertion failure function eu_total, file drv_getparams.c:127:
Failed assertion: ret == -19
Last errno: 22, Invalid argument
error: -22 != -19
Subtest eu-total failed.
**** DEBUG ****
Test assertion failure function eu_total, file drv_getparams.c:127:
Failed assertion: ret == -19
Last errno: 22, Invalid argument
error: -22 != -19
****  END  ****
Subtest eu-total: FAIL (0.000s)

==Reproduce steps==
---------------------------- 
1. ./drv_getparams --run-subtest eu-total

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150319/f7716dfe/attachment.html>