Bug #88994 Crash in client library in multithread connect and SSL

• Submitted: 20 Dec 2017 16:02
• Modified: 21 Dec 2017 9:52
• Reporter: Aleksandr Lyapunov
• Status: Verified
• Category: MySQL Server: C API (client library)
• Severity: S2 (Serious)
• Version: 5.5.31, 6.1.11
• OS: CentOS (7)
• CPU Architecture: Any

[20 Dec 2017 16:02] Aleksandr Lyapunov

Description:
Using mysql-5.5.31 client library I try to simultaneously connect to a server.
Sometimes I get errors in some threads and sometimes the program crashes.
Simple program that I wrote to reproduce the bug:
https://pastebin.com/a5Q9Aist
Here are output and backtrace of a crash:
https://pastebin.com/PcubxXv2

How to repeat:
https://pastebin.com/a5Q9Aist
Just complile and run.

[21 Dec 2017 9:52] MySQL Verification Team

Hello Aleksandr,

Thank you for the report and test case.

Thanks,
Umesh