LTTng » LTTng-tools

The corruption is observed immediately after creating 24 (mostly 21) sessions from 24 different trace generating systems
towards a single relayd on remote host.

We reproduced the problem in verbose mode and collected the logs. Please find them attached to the case.

• Error in `./lttng-relayd': double free or corruption (out): 0x00007f3fdc04d930 ***

This does look like the number of file descriptors has been exhausted. Can you list the open file descriptors just before the process crashes?

$ ls -l /proc/your_relayd_pid/fd

As a workaround, you could try increasing the number of file descriptors available per-process.
Can you provide the output of

$ ulimit -n

You can try increasing this value to, say, 4096 and see if the problem persists.

Good to hear. I'll keep the bug open to make sure this type of error is handled gracefully.