Failing to create DataReader leads to Segmentation Fault

[fujitatomoya]

Is there an already existing issue for this?

• I have searched the existing issues

Expected behavior

Successfully create the DataReader and will not receive Segmentation Fault signal.

Current behavior

Failed to create the DataReader and ends up with Segmentation Fault.

Steps to reproduce

W.I.P

Fast DDS version/commit

• https://github.com/eProsima/Fast-DDS/tree/2.6.1 (We cannot reproduce the issue)
• https://github.com/eProsima/Fast-DDS/tree/2.6.2
• https://github.com/eProsima/Fast-DDS/tree/2.8.0 + [15766] Update shared_mutex thirdparty to don't prioritize writers #2976

Platform/Architecture

Ubuntu Focal 20.04 arm64

Transport layer

Default configuration, UDPv4 & SHM

Additional context

XML configuration file

No response

Relevant log output

2022-10-31T01:45:08.000047480Z [RTPS_EDP Error] Adding already existent reader 0.0.11.7 in topic elements/current -> Function operator()
2022-10-31T01:45:08.000070203Z [RTPS_EDP Error] Adding already existent reader 0.0.11.7 in topic elements/current -> Function operator()
2022-10-31T01:45:08.000074282Z [RTPS_EDP Warning] Failed register ReaderProxyData in EDP -> Function addLocalReader
2022-10-31T01:45:08.000077628Z [RTPS_EDP Warning] Failed register ReaderProxyData in EDP -> Function addLocalReader
2022-10-31T01:45:08.000080788Z [DATA_READER Error] Could not register reader on discovery protocols -> Function enable
2022-10-31T01:45:08.000083944Z [DATA_READER Error] Could not register reader on discovery protocols -> Function enable
2022-10-31T01:45:08.118559752Z [RTPS_LIVELINESS Warning] Reader not removed from WLP, unknown reader -> Function remove_local_reader
2022-10-31T01:45:08.118570303Z [RTPS_LIVELINESS Warning] Reader not removed from WLP, unknown reader -> Function remove_local_reader

Network traffic capture

No response

[jingTian-z]

The commit you provided is tag:v2.8.0, but the crash log shows that the library you are using is libfastrtps.so.2.6.0. Is it because of version mismatch?

[fujitatomoya]

@jingTian-z good eye, let me check it, will get back to you.

[fujitatomoya]

The commit you provided is tag:v2.8.0, but the crash log shows that the library you are using is libfastrtps.so.2.6.0. Is it because of version mismatch?

• https://github.com/eProsima/Fast-DDS/tree/2.6.1 (We cannot reproduce the issue)
• https://github.com/eProsima/Fast-DDS/tree/2.6.2
• https://github.com/eProsima/Fast-DDS/tree/2.8.0 + [15766] Update shared_mutex thirdparty to don't prioritize writers #2976

[fujitatomoya]

This happens only configuration time for DataReader and DataWriter.

[MiguelCompany]

@fujitatomoya Is it possible to have a simple reproducer for this?

[fujitatomoya]

@MiguelCompany we do not have it right now, but trying to see more details. If we can do that, we will let you know.

[fujitatomoya]

https://github.com/eProsima/Fast-DDS/tree/2.6.2 + #2976 cannot meet this problem.

[MiguelCompany]

@fujitatomoya Is this still reproducible? In which versions?

Could you check with v2.6.4, v2.9.1, and master?

[fujitatomoya]

@MiguelCompany

we confirmed that #2976 can fix this problem as mentioned in #3056 (comment).
I will go ahead to close this, thank you so much for the support.