| Bug #103821 | An assertion failure in resource_group_mgr | ||
|---|---|---|---|
| Submitted: | 27 May 2021 1:30 | Modified: | 13 Apr 2022 8:01 |
| Reporter: | xiaoyu wang (OCA) | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Options | Severity: | S6 (Debug Builds) |
| Version: | MySQL Server 8.0.25 Community | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | Contribution, resource_group_mgr | ||
[27 May 2021 1:30]
xiaoyu wang
fix.patch (*) I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.
Contribution: fix.patch (application/octet-stream, text), 509 bytes.
[27 May 2021 5:34]
MySQL Verification Team
Hello xiaoyu wang, Thank you for the report and contribution. regards, Umesh
[13 Apr 2022 8:01]
MySQL Verification Team
-- Fixed in 8.0.22. mysql-test-run.pl tests under no-threads connection handling failed with ASAN builds due to improper resource group initialization. This has been fixed. Thanks to Xiaoyu Wang, Tencent Technology for the contribution.
Description: // sql/resourcegroups/resource_group_mgr.h void set_res_grp_in_pfs(const char *name, int length, ulonglong thread_id) { assert(m_resource_group_support); // L233. Assertion failure. m_resource_group_svc->set_thread_resource_group_by_id( nullptr, thread_id, name, length, nullptr); } The assertion failure is caused by a thread concurrency problem as illustrated in https://bugs.mysql.com/bug.php?id=99609. Please check https://bugs.mysql.com/file.php?id=29576&bug_id=99609 for the 'thread concurrency problem'. When it comes to m_resource_group_support. In brief, resource_group_mgr.h:L134 (in main thread) may take place between resource_group_mgr.cc:L74 (in child thread) and resource_group_mgr.h:L233 (in child thread). How to repeat: Please check https://bugs.mysql.com/file.php?id=29576&bug_id=99609. Suggested fix: I think the assertion can be removed.