Ubuntu
unity8 package

[regression] Starting in Mesa 12.0.2, Mir EGL clients crash with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)

Bug #1620994 reported by dinamic on 2016-09-07

This bug affects 9 people

	Status	Importance	Assigned to
Canonical System Image	Fix Released	High	Unassigned
Mir	Invalid	Undecided	Unassigned
mesa (Ubuntu)	Fix Released	High	Chris Halse Rogers
unity8 (Ubuntu)	Invalid	Medium	Unassigned

Bug Description

Ubuntu 16.10 + proposed x86, nvidia 8600gt nouveau

unity8-dash crashed with SIGSEGV in eglDestroyContext()

ProblemType: Crash
DistroRelease: Ubuntu 16.10
Package: unity8 8.14+16.10.20160831.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.6.0-10.12-generic 4.6.5
Uname: Linux 4.6.0-10-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CrashCounter: 1
Date: Wed Sep 7 13:04:53 2016
ExecutablePath: /usr/bin/unity8-dash
InstallationDate: Installed on 2016-06-05 (93 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcCmdline: unity8-dash --desktop_file_hint=/usr/share/applications/unity8-dash.desktop
SegvAnalysis:
Segfault happened at: 0x7fcab45aea3e: mov 0x30(%rbp),%rax
PC (0x7fcab45aea3e) ok
source "0x30(%rbp)" (0x00000030) not located in a known VMA region (needed readable region)!
destination "%rax" ok
Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity8
StacktraceTop:
?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
eglDestroyContext () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-ubuntumirclient.so
?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-ubuntumirclient.so
QOpenGLContext::destroy() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
Title: unity8-dash crashed with SIGSEGV in eglDestroyContext()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
upstart.unity8-dash.log: [2016-09-07:13:04:52.767] QEGLPlatformContext: eglMakeCurrent failed: 3001

Tags:

Revision history for this message

dinamic (dinamic6661) wrote on 2016-09-07:

Dependencies.txt Edit (33.8 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (569 bytes, text/plain; charset="utf-8")
JournalErrors.txt Edit (37.9 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (305 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (125.7 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (1.3 KiB, text/plain; charset="utf-8")
Registers.txt Edit (805 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (2.2 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (49.0 KiB, text/plain; charset="utf-8")
upstart.unity8.log.txt Edit (227.3 KiB, text/plain; charset="utf-8")

Revision history for this message

Apport retracing service (apport) wrote on 2016-09-07:

StacktraceTop:
dri2_destroy_context (drv=<optimized out>, disp=<optimized out>, ctx=0x555f62dd2c70) at ../../../src/egl/drivers/dri2/egl_dri2.c:1233
eglDestroyContext (dpy=0x555f62936b40, ctx=<optimized out>) at ../../../src/egl/main/eglapi.c:653
QEGLPlatformContext::~QEGLPlatformContext() () from /tmp/apport_sandbox_qJ2Nti/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-ubuntumirclient.so
~UbuntuOpenGLContext (this=0x555f62d29460, __in_chrg=<optimized out>) at ../../../src/ubuntumirclient/glcontext.h:25
UbuntuOpenGLContext::~UbuntuOpenGLContext (this=0x555f62d29460, __in_chrg=<optimized out>) at ../../../src/ubuntumirclient/glcontext.h:25

Revision history for this message

Apport retracing service (apport) wrote on 2016-09-07: Stacktrace.txt

Stacktrace.txt Edit (2.9 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2016-09-07: StacktraceSource.txt

StacktraceSource.txt Edit (2.3 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2016-09-07: ThreadStacktrace.txt

ThreadStacktrace.txt Edit (107.6 KiB, text/plain)

Changed in unity8 (Ubuntu):
importance:	Undecided → Medium
summary:	- unity8-dash crashed with SIGSEGV in eglDestroyContext() + unity8-dash crashed with SIGSEGV in dri2_destroy_context()
tags:	removed: need-amd64-retrace

Revision history for this message

Launchpad Janitor (janitor) wrote on 2016-09-10: Re: unity8-dash crashed with SIGSEGV in dri2_destroy_context()

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in unity8 (Ubuntu):
status:	New → Confirmed

Jeremy Bícha (jbicha) on 2016-09-14

information type:

Private → Public

Daniel van Vugt (vanvugt) on 2016-09-15

summary:	- unity8-dash crashed with SIGSEGV in dri2_destroy_context() + Mir clients crash on exit with SIGSEGV in dri2_destroy_context()
summary:	- Mir clients crash on exit with SIGSEGV in dri2_destroy_context() + unity8-dash crashed with SIGSEGV in dri2_destroy_context()

Daniel van Vugt (vanvugt) on 2016-09-15

summary:

- unity8-dash crashed with SIGSEGV in dri2_destroy_context()
+ Mir clients with SIGSEGV in dri2_destroy_context() (from
+ eglDestroyContext or eglTerminate)

Revision history for this message

Launchpad Janitor (janitor) wrote on 2016-09-15: Re: Mir clients with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in mesa (Ubuntu):
status:	New → Confirmed

Daniel van Vugt (vanvugt) on 2016-09-15

affects:	mir (Ubuntu) → mesa (Ubuntu)
summary:	- Mir clients with SIGSEGV in dri2_destroy_context() (from + EGL clients with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)
Changed in mir:
status:	New → Invalid
Changed in unity8 (Ubuntu):
status:	Confirmed → Invalid

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2016-09-15: Re: EGL clients with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)

Reverting back to Mesa 12.0.1 seems to solve the problem (tested using the test case of bug 1623484)

summary:

- EGL clients with SIGSEGV in dri2_destroy_context() (from
- eglDestroyContext or eglTerminate)
+ [regression] Starting in Mesa 12.0.2, EGL clients crash with SIGSEGV in
+ dri2_destroy_context() (from eglDestroyContext or eglTerminate)

Revision history for this message

Launchpad Janitor (janitor) wrote on 2016-09-15: Re: [regression] Starting in Mesa 12.0.2, EGL clients crash with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in mesa (Ubuntu):
status:	New → Confirmed

Daniel van Vugt (vanvugt) on 2016-09-15

tags:	added: regression-release
tags:	added: regression removed: regression-release
Changed in canonical-devices-system-image:
milestone:	none → 13
Changed in mesa (Ubuntu):
importance:	Undecided → High
Changed in canonical-devices-system-image:
importance:	Undecided → High
status:	New → Confirmed
tags:	added: unity8-desktop

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2016-09-15:

#10

See also bug 1620934 which happened in the upgrade to 12.0.2

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2016-09-15:

#11

could someone file this upstream?

Revision history for this message

Chris Halse Rogers (raof) wrote on 2016-09-16:

#12

Not an upstream bug; this is a semantic merge error when updating the Mir EGL platform patch.

Changed in mesa (Ubuntu):
status:	Confirmed → In Progress
assignee:	nobody → Chris Halse Rogers (raof)

Daniel van Vugt (vanvugt) on 2016-09-16

tags:

added: egl-platform-mir

Revision history for this message

Launchpad Janitor (janitor) wrote on 2016-09-16:

#13

This bug was fixed in the package mesa - 12.0.3-1ubuntu1

---------------
mesa (12.0.3-1ubuntu1) yakkety; urgency=medium

* Merge from Debian.

  [ Christopher James Halse Rogers ]
  * egl-platform-mir.patch: Updated for upstream changes to dri2_initialize
    in egl_dri2.c. (LP: #1620934, #1620994)

mesa (12.0.3-1) unstable; urgency=medium

* New upstream release.
* Enable vc4 on arm64.

-- Timo Aaltonen <email address hidden> Fri, 16 Sep 2016 10:07:05 +0300

Changed in mesa (Ubuntu):
status:	In Progress → Fix Released

Daniel van Vugt (vanvugt) on 2016-09-19

Changed in canonical-devices-system-image:
status:	Confirmed → Fix Committed

Daniel van Vugt (vanvugt) on 2016-09-19

summary:	- [regression] Starting in Mesa 12.0.2, EGL clients crash with SIGSEGV in - dri2_destroy_context() (from eglDestroyContext or eglTerminate) + [regression] Starting in Mesa 12.0.2, Mir EGL clients crash with SIGSEGV + in dri2_destroy_context() (from eglDestroyContext or eglTerminate)
Changed in canonical-devices-system-image:
status:	Fix Committed → Fix Released
milestone:	13 → none

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[regression] Starting in Mesa 12.0.2, Mir EGL clients crash with SIGSEGV in dri2_destroy_context() (from eglDestroyContext or eglTerminate)

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