# Segmentation fault when connecting to pvdataserver

**URL:** https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794
**Category:** ParaView Support
**Created:** [March 25, 2021, 8:37am UTC](https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794 "2021-03-25T08:37:16Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![viechr78](https://discourse.paraview.org/user_avatar/discourse.paraview.org/viechr78/32/6291_2.png) [@viechr78](https://discourse.paraview.org/u/viechr78)
#### Post date: [March 25, 2021, 8:37am UTC](https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794/1 "2021-03-25T08:37:16Z")

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When I try to connect to a remote pvdataserver, Paraview on my client freezes after the connection is established. About 45 seconds after the connection is established, the pvdataserver crashes with following error:

```
Waiting for client...
Connection URL: cdsrs://myserver:11111/<render-server-hostname>:22221
Accepting connection(s): myserver:11111
Client connected.
ConnectMtoN
Connecting : rank :0 dest-host :VIED17075138 dest-port :52082

Loguru caught a signal: SIGSEGV
Stack trace:
10 0x40173e pvdataserver() [0x40173e]
9 0x7f92c35d6803 __libc_start_main + 243
8 0x401655 pvdataserver() [0x401655]
7 0x7f92c1217f82 vtkTCPNetworkAccessManager::ProcessEventsInternal(unsigned long, bool) + 658
6 0x7f92c015c3e1 vtkMultiProcessController::ProcessRMIs(int, int) + 705
5 0x7f92c015bc08 vtkMultiProcessController::ProcessRMI(int, void*, int, int) + 312
4 0x7f92c19dcd28 vtkPVSessionServer::OnClientServerMessageRMI(void*, int) + 1096
3 0x7f92c19dc8ba vtkPVSessionServer::GatherInformationInternal(unsigned int, char const*, unsigned int, vtkMultiProcessStream&) + 698
2 0x7f92c11c99c2 vtkPVDataInformation::CopyParametersFromStream(vtkMultiProcessStream&) + 114
1 0x7f92c01619a0 vtkMultiProcessStream::operator>>(std::string&) + 208
0 0x7f92c35ea8d0 /lib64/libc.so.6(+0x378d0) [0x7f92c35ea8d0]
( 46.686s) [pvdatserver] :0 FATL| Signal: SIGSEGV
Segmentation fault (core dumped)

```

I already built paraview with updated git repositories.

Can anyone help with this problem?

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 25, 2021, 8:41am UTC](https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794/2 "2021-03-25T08:41:09Z")

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please share the commands you use.

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<div class="post-metadata">

### Author: ![viechr78](https://discourse.paraview.org/user_avatar/discourse.paraview.org/viechr78/32/6291_2.png) [@viechr78](https://discourse.paraview.org/u/viechr78)
#### Post date: [March 25, 2021, 8:44am UTC](https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794/3 "2021-03-25T08:44:55Z")

</div>

I started it just with “pvdataserver” on my remote machine (it is a headless machine running on RHEL 8.3).  
On my client (Windows 10) I started the pvrenderserver and the GUI.

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<div class="post-metadata">

### Author: ![Amal\_Roy](https://discourse.paraview.org/user_avatar/discourse.paraview.org/amal_roy/32/6833_2.png) [@Amal\_Roy](https://discourse.paraview.org/u/Amal_Roy)
#### Post date: [June 5, 2021, 10:50am UTC](https://discourse.paraview.org/t/segmentation-fault-when-connecting-to-pvdataserver/6794/4 "2021-06-05T10:50:15Z")

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HI I have the same problem.

I connect using reverse connect and the client will be connected.

Now if I am using a compute node on the server (I believe there is some permission issues), I get this error.  
If I am not using a compute node and is running pvserver using the ssh’d remote terminal, i get no error but this is of no use.