Bug #104544 Under certain circumstances, show slave hosts will kill mysql client

• Submitted: 5 Aug 2021 7:18
• Modified: 5 Aug 2021 16:30
• Reporter: GONGTUI FU
• Status: Duplicate
• Category: MySQL Server: Command-line Clients
• Severity: S3 (Non-critical)
• Version: 8.0.25
• OS: Any
• CPU Architecture: Any

[5 Aug 2021 7:18] GONGTUI FU

Description:
The third-party plugin that has no Slave_UUID is used as the slave to connect master. mysql client connects master and executes "show slave hosts" statement,
mysql client will logout!

How to repeat:
1. The third-party plugin that has no Slave_UUID is used as the slave to connect master. 

2. mysql connects master.

3. execute "show slave hosts" statement.

Suggested fix:
rpl_master.cc:show_slave_hosts(THD *thd)

-    if (get_slave_uuid(si->thd, &slave_uuid))
-      protocol->store(slave_uuid.c_ptr_safe(), &my_charset_bin);
+    get_slave_uuid(si->thd, &slave_uuid);
+    protocol->store(slave_uuid.c_ptr_safe(), &my_charset_bin);

[5 Aug 2021 10:16] MySQL Verification Team

Hello GONGTUI FU,

Thank you for the report and feedback.
Imho this is duplicate of Bug #99857, please see Bug #99857

regards,
Umesh

[5 Aug 2021 16:30] GONGTUI FU

when will the bug be fixed? I test it at the lastest 8.0.25 version.