Bug 1496766 - Crash in libepoxy.so (gl_provider_resolver)
Summary: Crash in libepoxy.so (gl_provider_resolver)
Alias: None
Product: Fedora
Classification: Fedora
Component: spice-gtk
Version: 26
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Marc-Andre Lureau
QA Contact: Fedora Extras Quality Assurance
: 1507290 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2017-09-28 10:34 UTC by Christophe de Dinechin
Modified: 2018-05-29 12:01 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-05-29 12:01:51 UTC
Type: Bug

Attachments (Terms of Use)
Configuration file (5.94 KB, text/plain)
2017-09-28 13:05 UTC, Christophe de Dinechin
no flags Details

Description Christophe de Dinechin 2017-09-28 10:34:50 UTC
Description of problem: Following the setup instructions found here: https://aspiceodyssey.wordpress.com/2017/04/28/fedora25-3d-accelerated-guest, with the only change being I used a Fedora 26 host with an M2000 NIVIDIA card, my guest crashed with the following stack trace:

Process 20868 (virt-manager) of user 1026 dumped core.

Stack trace of thread 20868:
#0  0x00007f9e25b4c69b raise (libc.so.6)
#1  0x00007f9e25b4e4a0 abort (libc.so.6)
#2  0x00007f9e0996ec9c gl_provider_resolver (libepoxy.so.0)
#3  0x00007f9e09974bf1 gl_single_resolver (libepoxy.so.0)
#4  0x00007f9e09979ada epoxy_glEGLImageTargetTexture2DOES_global_rewrite_ptr (libepoxy.so.0)
#5  0x00007f9dd56c7851 spice_egl_update_scanout (libspice-client-gtk-3.0.so.5)
#6  0x00007f9dd56c13ba spice_display_widget_gl_scanout (libspice-client-gtk-3.0.so.5)
#7  0x00007f9dd56c6ac7 spice_egl_init (libspice-client-gtk-3.0.so.5)
#8  0x00007f9dd56c135c spice_display_widget_gl_scanout (libspice-client-gtk-3.0.so.5)
#9  0x00007f9e1d0d930d g_closure_invoke (libgobject-2.0.so.0)
#10 0x00007f9e1d0eb98e signal_emit_unlocked_R (libgobject-2.0.so.0)
#11 0x00007f9e1d0f41a5 g_signal_emit_valist (libgobject-2.0.so.0)
#12 0x00007f9e1d0f4b0f g_signal_emit (libgobject-2.0.so.0)
#13 0x00007f9e1d0dd594 g_object_dispatch_properties_changed (libgobject-2.0.so.0)
#14 0x00007f9e1d0dfa19 g_object_notify (libgobject-2.0.so.0)
#15 0x00007f9de6cfd030 notify_main_context (libspice-client-glib-2.0.so.8)
#16 0x00007f9e1cdfdc27 g_idle_dispatch (libglib-2.0.so.0)
#17 0x00007f9e1ce01247 g_main_context_dispatch (libglib-2.0.so.0)
#18 0x00007f9e1ce015e8 g_main_context_iterate.isra.25 (libglib-2.0.so.0)
#19 0x00007f9e1ce0167c g_main_context_iteration (libglib-2.0.so.0)
#20 0x00007f9e1c43cebd g_application_run (libgio-2.0.so.0)
#21 0x00007f9e1cbb4bde ffi_call_unix64 (libffi.so.6)
#22 0x00007f9e1cbb454f ffi_call (libffi.so.6)
#23 0x00007f9e1d77dce4 pygi_invoke_c_callable (_gi.so)
#24 0x00007f9e1d77f838 pygi_function_cache_invoke (_gi.so)
#25 0x00007f9e1d773c89 _callable_info_call (_gi.so)
#26 0x00007f9e268bca53 PyObject_Call (libpython2.7.so.1.0)
#27 0x00007f9e2699f454 PyEval_EvalFrameEx (libpython2.7.so.1.0)
#28 0x00007f9e269a1d99 PyEval_EvalFrameEx (libpython2.7.so.1.0)
#29 0x00007f9e269a43f8 PyEval_EvalCodeEx (libpython2.7.so.1.0)
#30 0x00007f9e269a1433 PyEval_EvalFrameEx (libpython2.7.so.1.0)
#31 0x00007f9e269a43f8 PyEval_EvalCodeEx (libpython2.7.so.1.0)
#32 0x00007f9e269a4609 PyEval_EvalCode (libpython2.7.so.1.0)
#33 0x00007f9e2697c81f run_mod (libpython2.7.so.1.0)
#34 0x00007f9e2697c8ca PyRun_FileExFlags (libpython2.7.so.1.0)
#35 0x00007f9e2697d8ce PyRun_SimpleFileExFlags (libpython2.7.so.1.0)
#36 0x00007f9e2697061e Py_Main (libpython2.7.so.1.0)
#37 0x00007f9e25b3650a __libc_start_main (libc.so.6)
#38 0x00005560d5eac77a _start (python2.7)

Version-Release number of selected component (if applicable):

How reproducible:

Follow the instructions in the link above. Also had to add `setsebool -P virt use_execmem 1`.

Steps to Reproduce:
1. Enable 3D for the guest as indicated above
2. Launch the guest
3. There is no step 3

Actual results:

Crash in GL

Expected results:

Somewhat variable, like semi-random results on the display, but no crash.
Additional info:

Comment 1 Christophe de Dinechin 2017-09-28 13:03:27 UTC
This happens depending on this:

    <graphics type='spice'>
      <listen type='none'/>
      <gl enable='no'/>

If you set <gl enable='yes'/>, then you get the crash.

Will attach the configuration file.

Comment 2 Christophe de Dinechin 2017-09-28 13:05:38 UTC
Created attachment 1331979 [details]
Configuration file

This is a working configuration file. If you change "<gl enable='yes'/>" in the <graphics> section, then it crashes.

Comment 3 Cole Robinson 2017-10-11 19:06:26 UTC
Thanks for the report. Why is spice-gtk calling egl functions if gl enable='no' ? My guess is libepoxy is just hitting an assert here but full debuginfo trace is required to be sure.

What spice-gtk version are you using?

Comment 4 Marc-Andre Lureau 2018-02-25 22:25:30 UTC
*** Bug 1507290 has been marked as a duplicate of this bug. ***

Comment 5 Fedora End Of Life 2018-05-03 08:39:12 UTC
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Approximately 4 (four) weeks from now Fedora will stop maintaining
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Comment 6 Fedora End Of Life 2018-05-29 12:01:51 UTC
Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26
is no longer maintained, which means that it will not receive any
further security or bug fix updates. As a result we are closing this bug.

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