Ubuntu
unity-system-compositor package

unity-system-compositor crashed with SIGSEGV

Bug #1672793 reported by Aram Paronikyan on 2017-03-14

This bug report is a duplicate of: Bug #1497593: [nouveau] Programs crash with SIGABRT in nouveau_pushbuf_data: Assertion `kref' failed.. Edit Remove

10

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Unity System Compositor	New	Undecided	Unassigned
	unity-system-compositor (Ubuntu)	New	Medium	Unassigned

Bug Description

I just got this on the first login to my new Ubuntu user profile

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: unity-system-compositor 0.9.1+17.04.20170216-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-11.13-generic 4.10.1
Uname: Linux 4.10.0-11-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
Date: Tue Mar 14 20:14:24 2017
ExecutablePath: /usr/sbin/unity-system-compositor
GraphicsCard: NVIDIA Corporation GT218 [GeForce 210] [10de:0a65] (rev a2) (prog-if 00 [VGA controller])
InstallationDate: Installed on 2013-09-15 (1275 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
ProcCmdline: /usr/sbin/unity-system-compositor --disable-inactivity-policy=true --on-fatal-error-abort --file /run/mir_socket --from-dm-fd 13 --to-dm-fd 22 --vt 8
ProcEnviron:

SegvAnalysis:
Segfault happened at: 0x7f8dc76dd07f: mov 0x8(%r15),%edx
PC (0x7f8dc76dd07f) ok
source "0x8(%r15)" (0x00000008) not located in a known VMA region (needed readable region)!
destination "%edx" ok
Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-system-compositor
StacktraceTop:
() at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
() at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
() at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
() at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
() at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
Title: unity-system-compositor crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

version.libdrm: libdrm2 2.4.75-1ubuntu1
version.lightdm: lightdm 1.21.5-0ubuntu1
version.mesa: libegl1-mesa-dev 13.0.4-1ubuntu1

Tags:

Revision history for this message

Aram Paronikyan (paronikyan) wrote on 2017-03-14:

#1

BootLog.txt Edit (5.7 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.2 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (621 bytes, text/plain; charset="utf-8")
JournalErrors.txt Edit (40.7 KiB, text/plain; charset="utf-8")
LightDMLog.txt Edit (17.2 KiB, text/plain; charset="utf-8")
ProcMaps.txt Edit (37.1 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Registers.txt Edit (770 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (1.7 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (10.7 KiB, text/plain; charset="utf-8")
UnitySystemCompositorLog.txt Edit (5.5 KiB, text/plain; charset="utf-8")

Revision history for this message

Apport retracing service (apport) wrote on 2017-03-14:

#2

StacktraceTop:
pushbuf_kref (push=push@entry=0x564379e96ea0, bo=0x0, flags=0) at ../../nouveau/pushbuf.c:165
pushbuf_validate (push=0x564379e96ea0, retry=<optimized out>) at ../../nouveau/pushbuf.c:506
nouveau_pushbuf_validate (push=<optimized out>) at ../../nouveau/pushbuf.c:753
nv50_state_validate (nv50=nv50@entry=0x564379ee91d0, mask=mask@entry=4096, validate_list=validate_list@entry=0x7f8dc866d5a0 <validate_list_3d>, size=size@entry=26, dirty=dirty@entry=0x564379ee95c8, bufctx=0x564379ee72a0) at ../../../../../src/gallium/drivers/nouveau/nv50/nv50_state_validate.c:582
nv50_state_validate_3d (nv50=nv50@entry=0x564379ee91d0, mask=mask@entry=4096) at ../../../../../src/gallium/drivers/nouveau/nv50/nv50_state_validate.c:592

Revision history for this message

Apport retracing service (apport) wrote on 2017-03-14: Stacktrace.txt

#3

Stacktrace.txt Edit (5.2 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2017-03-14: StacktraceSource.txt

#4

StacktraceSource.txt Edit (3.8 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2017-03-14: ThreadStacktrace.txt

#5

ThreadStacktrace.txt Edit (50.5 KiB, text/plain)

Changed in unity-system-compositor (Ubuntu):
importance:	Undecided → Medium
tags:	removed: need-amd64-retrace

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2017-03-15:

#6

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1553328, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

information type:

Private → Public

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2017-03-15:

#7

The nouveau driver is too unstable to handle multi-threaded rendering (which Mir and Unity8 uses by default). If you want to use nouveau maybe try unplugging one of your monitors.

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