Bug 103455

Summary:	piglit.spec.!opengl 1_1.masked-clear crashes
Product:	Mesa	Reporter:	Mark Janes <mark.a.janes>
Component:	Drivers/DRI/i965	Assignee:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Mark Janes 2017-10-25 16:40:23 UTC

Bisected to:
e9664264fa82055efae23d653f774febc87c5463
Author:     Brian Paul <brianp@vmware.com>
util: don't use fbo if test_config->requires_displayed_window is true

If the test is configured with config.requires_displayed_window = true
we shouldn't create an fbo if the -fbo option is given.

Fixes "drawbuffer-modes -auto -fbo" failure, for example.

Reviewed-by: Eric Anholt <eric@anholt.net>


/tmp/build_root/m64/lib/piglit/bin/masked-clear -auto -fbo
<crashes with no assertion or output>

This is running with -p gbm

Comment 1 Brian Paul 2017-10-25 17:02:00 UTC

You see the test running the test manually?  Can you debug this a bit further?
I have no experience with -p gbm.

Comment 2 Mark Janes 2017-10-25 17:44:54 UTC

This only crashes with gbm:

> PIGLIT_PLATFORM=gbm gdb /tmp/build_root/m64/lib/piglit/bin/masked-clear
(gdb) set args  -auto -fbo
(gdb) run
...
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff1959de0 in do_single_blorp_clear () from /tmp/build_root/m64/lib/dri/i965_dri.so
(gdb) bt
#0  0x00007ffff1959de0 in do_single_blorp_clear () from /tmp/build_root/m64/lib/dri/i965_dri.so
#1  0x00007ffff195c060 in brw_blorp_clear_color () from /tmp/build_root/m64/lib/dri/i965_dri.so
#2  0x00007ffff195ed8c in brw_clear () from /tmp/build_root/m64/lib/dri/i965_dri.so
#3  0x00007ffff7a94d32 in stub_glClear (mask=16384) at tests/util/piglit-dispatch-gen.c:3907
#4  0x0000555555555483 in test_color_masking (buffer=1028) at ../tests/general/masked-clear.c:109
#5  0x00005555555557ec in piglit_display () at ../tests/general/masked-clear.c:222
#6  0x00007ffff7b35e4c in enter_event_loop (winsys_fw=0x555555769c20) at ../tests/util/piglit-framework-gl/piglit_gbm_framework.c:42
#7  0x00007ffff7b35681 in run_test (gl_fw=0x555555769c20, argc=1, argv=0x7fffffffe778)
    at ../tests/util/piglit-framework-gl/piglit_winsys_framework.c:88
#8  0x00007ffff7b19e1d in piglit_gl_test_run (argc=1, argv=0x7fffffffe778, config=0x7fffffffe630)
    at ../tests/util/piglit-framework-gl.c:223
#9  0x00005555555551a5 in main (argc=1, argv=0x7fffffffe778) at ../tests/general/masked-clear.c:44

Comment 3 Brian Paul 2017-10-25 17:55:21 UTC

Perhaps this is a newly exposed bug in the i965 driver.  I suggest a debug build and gdb.

Comment 4 Mark Janes 2017-10-25 18:11:07 UTC

Assigning to Mesa.  The bisection was to a piglit commit that looks to have exposed a mesa bug.

Comment 5 GitLab Migration User 2019-09-25 19:04:50 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1641.

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