V-REP crash (running several instances of V-REP with several remote API clients)

[Uli_v]

Any idea where I would need to look at to fix the problem? Is there a threading issue? Is it the remoteAPI?
It seems to happen only if I run several instances of V-REP with several instances of remote API clients (python).
I am running V3.5.0.

Code: Select all

*** buffer overflow detected ***: /home/uli/Software/V-REP/vrep terminated
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7fdb2206f7e5]
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x7fdb2211115c]
/lib/x86_64-linux-gnu/libc.so.6(+0x117160)[0x7fdb2210f160]
/lib/x86_64-linux-gnu/libc.so.6(+0x1190a7)[0x7fdb221110a7]
/home/uli/Software/V-REP/libv_repExtRemoteApi.so(_ZN13CInConnection15connectToClientEv+0x16b)[0x7fdae558debb]
/home/uli/Software/V-REP/libv_repExtRemoteApi.so(_ZN11CSimxSocket4_runEv+0x111)[0x7fdae5599721]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7fdb21ad96ba]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fdb220ff41d]
======= Memory map: ========
./vrep.sh: line 33: 20704 Aborted                 (core dumped) "$dirname/$appname" "${PARAMETERS[@]}"

[Jendker]

VRep V3.6.1 is out, try this one :)

[coppelia]

This issue is probably the same as this one. And it is not yet resolved...

Cheers

[fferri]

Hi Uli_v,

I'm trying to replicate the crash to no avail. Can you try to compile the plugin in debug mode and have it crashing within the debugger to see exactly at which line is crashing?

[agsdyson]

You can use the example I posted in
viewtopic.php?f=5&t=7769

https://www.dropbox.com/s/r3yitxsum4sr0 ... e.zip?dl=0

to get it to crash reliably after 1600 seconds.

[fferri]

I'm using that example, but I only see V-REP instances increasing in memory usage.
Does it crash because it goes out of memory?

[agsdyson]

I don't run out of memory, but after 1600 seconds I cannot connect to the remote API client. I last ran this on v3.6.1 rev2 so things might be different now.

[coppelia]

Can you try following?

In the V-REP folder, you'll find a file named remoteApiConnections.txt. In there, append following line:

Code: Select all

useAlternateSocketRoutines  = true

Let me know if that works.

Cheers

[coppelia]

I have uploaded a new version of the legacy remote API plugin here. Can you try with that one? Make sure to set value of useAlternateSocketRoutines to false again in file remoteApiConnections.txt

Cheers

[Uli_v]

Hi Uli_v,

I'm trying to replicate the crash to no avail. Can you try to compile the plugin in debug mode and have it crashing within the debugger to see exactly at which line is crashing?

How do I compile the plugin in debug mode? I can run my code in debug mode, but it might take some time until it crashes.