synergys crashed with SIGABRT in __GI___assert_fail()

Bug #922428 reported by Karl Hegbloom on 2012-01-27
This bug affects 36 people
Affects Status Importance Assigned to Milestone
synergy (Ubuntu)

Bug Description

I shut down the computer with synergys running (via quicksynergy). When I rebooted, soon after logging in, it crashed and apport offered me the opportunity to report this bug. The laptop that was to the right of this desktop machine is still suspended, and therefore this end cannot reach it.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: synergy 1.3.8-1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8000.1~ppa1-generic-tuxonice 3.2.1
Uname: Linux 3.2.0-8000-generic-tuxonice x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Thu Jan 26 15:27:39 2012
ExecutablePath: /usr/bin/synergys
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110301.7)
ProcCmdline: /usr/bin/synergys -f --config .quicksynergy/synergy.conf
 PATH=(custom, user)
Signal: 6
SourcePackage: synergy
 raise () from /lib/x86_64-linux-gnu/
 abort () from /lib/x86_64-linux-gnu/
 __assert_fail () from /lib/x86_64-linux-gnu/
 CArchMultithreadPosix::closeMutex(CArchMutexImpl*) ()
 CXWindowsEventQueueBuffer::~CXWindowsEventQueueBuffer() ()
Title: synergys crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-01-26 (1 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare src

Karl Hegbloom (karl.hegbloom) wrote :

 __GI___assert_fail (assertion=0x496441 "status == 0", file=<optimized out>, line=289, function=<optimized out>) at assert.c:81
 closeMutex (this=<optimized out>, mutex=<optimized out>) at /build/buildd/synergy-1.3.8/src/lib/arch/CArchMultithreadPosix.cpp:289
 CArchMultithreadPosix::closeMutex (this=<optimized out>, mutex=0x17e5330) at /build/buildd/synergy-1.3.8/src/lib/arch/CArchMultithreadPosix.cpp:285
 CXWindowsEventQueueBuffer::~CXWindowsEventQueueBuffer (this=0x17e5210, __in_chrg=<optimized out>) at /build/buildd/synergy-1.3.8/src/lib/platform/CXWindowsEventQueueBuffer.cpp:73
 CXWindowsEventQueueBuffer::~CXWindowsEventQueueBuffer (this=0x17e5210, __in_chrg=<optimized out>) at /build/buildd/synergy-1.3.8/src/lib/platform/CXWindowsEventQueueBuffer.cpp:78

Changed in synergy (Ubuntu):
importance: Undecided → Medium
summary: - synergys crashed with SIGABRT in raise()
+ synergys crashed with SIGABRT in __GI___assert_fail()
tags: removed: need-amd64-retrace
visibility: private → public
Launchpad Janitor (janitor) wrote :

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

Changed in synergy (Ubuntu):
status: New → Confirmed
Martin Olsson (mnemo) wrote :

Also seen in 12.04 as of 2012-03-24

skep (skep) wrote :

$ dmesg | grep synerg
[69388.893947] synergyc[1891]: segfault at 8b0a75c8 ip 00179bf2 sp bfea3ab8 error 4 in[122000+d8000]

Mark Foster (blakjak) wrote :

root@radar:~# grep synerg /var/log/syslog | grep seg
Apr 27 15:57:21 radar kernel: [ 5586.880657] synergyc[2492]: segfault at 8b0a75c8 ip 0040dbf2 sp bfee4378 error 4 in[3b6000+d8000]
Apr 27 16:21:02 radar kernel: [ 7008.450659] synergyc[3233]: segfault at 8b0a75c8 ip 002b2bf2 sp bf849a08 error 4 in[25b000+d8000]
Apr 27 16:21:28 radar kernel: [ 7034.331680] synergyc[3656]: segfault at 8b0a75c8 ip 004afbf2 sp bfdb28b8 error 4 in[458000+d8000]
Apr 27 16:25:52 radar kernel: [ 7298.115410] synergyc[3839]: segfault at 8b0a75c8 ip 00d56bf2 sp bfc832d8 error 4 in[cff000+d8000]

Ubuntu 12.04, didn't notice this issue at all prior to upgrading (was working fine 11.10 at least as near as I could tell).

Mark Foster (blakjak) wrote :

Among other things attempts to use 'alt-tab' seem to trigger this segfault.

Carl Baldwin (carl-baldwin) wrote :

Hit this problem multiple times after upgrade to 12.04 this morning. Going to try 1.4.8 beta from

Carl Baldwin (carl-baldwin) wrote :

I'm still getting a crash after upgrading to synergy 1.4.8 beta. I backed out to the 10.04 version of synergy.

Mark Foster (blakjak) wrote :

A colleague of mine upgraded and saw an improvement on his system.I had a go at upgrading but the Ubuntu 32bit package from threw up a bunch of 'bad package' errors so I gave up.
This is very frustrating!

matti salminen (salmiset) wrote :

Also occurs in 12.10 Alpha3. Desktop Ubuntu Synergy server seems to crash when the laptop with the Synergy client is suspended.

Mark Foster (blakjak) wrote :

Wow, really no-one keen to look at this bug, eh?

Mark Foster (blakjak) wrote :

4 months, not a single movement on this one?

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