roslaunch: [gazebo-2] process has died [pid 7605, exit code 139
After running my model with roslaunch for round about 10 to 20 minutes I always get the following error:
Segmentation fault (core dumped)
[gazebo-2] process has died [pid 7605, exit code 139, cmd /opt/ros/kinetic/lib/gazebo_ros/gzserver -e ode /home/philipp/navibot_ws/src/navibot_gazebo/worlds/navibot.world __name:=gazebo __log:=/home/philipp/.ros/log/09e16ec0-4a76-11e7-a9fe-7085c23141c2/gazebo-2.log].
log file: /home/philipp/.ros/log/09e16ec0-4a76-11e7-a9fe-7085c23141c2/gazebo-2*.log
Unfortunately no log file gazebo-2*.log is created.
I looked through my URDF model and checked my code. The problem is that I have a hard time to identify where the problem is really coming from, so I am looking for help here. I looked at the related questions here in the forum, but none of the solutions there worked for me.
This is my backtrace:
Thread 25 "gzserver" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff67fff700 (LWP 28488)]
gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/g
740 /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc: No such file
(gdb) backtrace
0 gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSA
1 0x00007ffff62d99af in gazebo::physics::World::Step (this=this@entry=0x12075a0) a
2 0x00007ffff62d9e25 in gazebo::physics::World::RunLoop (this=0x12075a0) at /build
3 0x00007ffff40d95d5 in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.
4 0x00007ffff65ee6ba in start_thread (arg=0x7fff67fff700) at pthread_create.c:333
5 0x00007ffff6bef82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb) frame 0
0 gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo /physics/World.cc:740
740 in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc
(gdb) frame 1
1 0x00007ffff62d99af in gazebo::physics::World::Step (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc:672
672 in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc
(gdb) frame 2
2 0x00007ffff62d9e25 in gazebo::physics::World::RunLoop (this=0x12075a0) at /build/gazebo-nhSAPd/gazebo- 7.0.0+dfsg/gazebo/physics/World.cc:481
481 in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc
(gdb) frame 3
3 0x00007ffff40d95d5 in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.58.0
(gdb) frame 4
4 0x00007ffff65ee6ba in start_thread (arg=0x7fff67fff700) at pthread_create.c:333
333 pthread_create.c: No such file or directory.
(gdb) frame 5
5 0x00007ffff6bef82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
109 ../sysdeps/unix/sysv/linux/x86_64/clone.S: No such file or directory.
I run my simulation on a stronger machine now and I didn't get this crash since 3 hours. (Which doesn't mean that it won't occur ;) ) But I suspect an internal problem. (Maybe memory related?) Also, when I ran the simulation headless, the error occurred much later, like after 1 hour instead of 20 minutes. Update: It still crashes on my faster machine but after a longer time. I can work with this in some way, but it is annoying of course to restart the and load kind of checkpoints.
I'm having the exact same problem (exact same backtrace and everything). This happens in all configurations that I have tried (several desktops and cluster). Because of a problem with Gazebo8 I can't upgrade (https://github.com/ros-simulation/gazebo_ros_pkgs/issues/596) and so I would really like to resolve this problem.
I don't know if this helps, but I managed to get a bit further without full debug build. It seems to be a null pointer reference when signalling `worldUpdateBegin`. I'll add the full trace below, the only other piece of information that could be useful is that `this->dataPtr->resetAll` was `true` for me.
``` (gdb) whatis iter.second->on Attempt to take address of value not located in memory. (gdb) bt (removed frame 0 and 1) #2 gazebo::event::EventT<void (gazebo::common::updateinfo="" const&)="">::Signal<gazebo::common::updateinfo>(gazebo::common::UpdateInfo const&) (_p=..., this=<optimized out="">) at /home/jorgehn/gazebo/gazebo/common/Event.hh:379 #3 gazebo::event::EventT<void (gazebo::common::updateinfo="" const&)="">::operator()<gazebo::common::updateinfo>(gazebo::common::UpdateInfo const&) (_p=.. ```