Bug #10710 [Stress]: Mysql Server crashes after getting signal 11
Submitted: 18 May 2005 14:17 Modified: 1 Sep 2005 8:30
Reporter: Disha Email Updates:
Status: No Feedback Impact on me:
Category:MySQL Server Severity:S2 (Serious)
Version:mysql Ver 14.9 Distrib 5.0.5-beta, for OS:Windows (Windows 2003 Server)
Assigned to: CPU Architecture:Any

[18 May 2005 14:17] Disha
Mysql server crashes after getting signal 11, and throws a warning "a long semaphore wait".

How to repeat:
1. Start several sessions to connect to mysql server.
2. In each session start execution of testfiles.
3. Restart the server each time after it crashes.

Expected Results: All the test files should be executed properly and if the Server crashes, it should be able to recover when started again.
Actual Results:     The test files execute properly for sometime, and then after a few Server crashes, the Server is not able to start and keeps on getting signal 11. It also throws continuous warnings "a long semaphore wait" for the different threads that were executing on the server.

Attachments:  	mysql_server_err_log.zip
[18 May 2005 14:19] Disha
MySQL server error-log file

Attachment: mysql_server_err_log.zip (application/x-zip-compressed, text), 49.91 KiB.

[18 May 2005 14:21] Disha
MySQL server query-log file #1

Attachment: MYSQLWIN2_server_query_log1.zip (application/x-zip-compressed, text), 164.89 KiB.

[18 May 2005 14:21] Disha
MySQL server query-log file #2

Attachment: MYSQLWIN2_server_query_log2.zip (application/x-zip-compressed, text), 186.79 KiB.

[18 May 2005 14:22] Disha
MySQL server query-log file #3

Attachment: MYSQLWIN2_server_query_log3.zip (application/x-zip-compressed, text), 170.19 KiB.

[18 May 2005 14:23] Disha
MySQL server query-log file #4

Attachment: MYSQLWIN2_server_query_log4.zip (application/x-zip-compressed, text), 187.21 KiB.

[18 May 2005 14:47] Disha
Could not upload all the attachment log files, since while uploading, the following error is obtained "You must select a file.", even though a file is properly selected.

Also tried uploading the remaining files on the following ftp site ftp://ftp.mysql.com/pub/mysql/upload/
but it gives an error saying "Permission Denied"
[20 May 2005 8:57] Vasily Kishkin
Could you please to attach client test cases ? How many client cases must be run ?
[30 May 2005 15:39] Disha
We will send the stack trace for this.

[3 Jun 2005 5:44] Disha
Stack traces

Attachment: Trace_logs.zip (application/x-zip-compressed, text), 71.16 KiB.

[10 Jun 2005 7:27] Disha
stack traces are attached. We were able to reproduce the problem with 50 client threads as well. I could assume that we can reproduce the issue with much fewer threads as well.
[17 Jun 2005 8:00] Vasily Kishkin
Tested on Win 2000 Sp4, MySQL server 5.0.7 beta
[23 Jun 2005 17:47] Jim Winstead
Steps to reproduce are not clear, and backtraces are not resolved.
[28 Jun 2005 8:14] Vasily Kishkin
bat file for testing

Attachment: loop.bat (application/octet-stream, text), 110 bytes.

[1 Aug 2005 8:30] Vasily Kishkin
I was not able to reproduce the bug on 5.0.8. Probably bug was fixed. Could you please repeat your testes with new version of mysqld ?
[1 Sep 2005 23:00] Bugs System
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".