Bug #44627 Certain operations can freeze the server if binlog is enabled

• Submitted: 3 May 2009 10:59
• Modified: 14 May 2009 7:30
• Reporter: Domas Mituzas
• Status: Duplicate
• Category: MySQL Server: Row Based Replication ( RBR )
• Severity: S3 (Non-critical)
• Version: 5.1
• OS: Any
• Assigned to: Assigned Account
• CPU Architecture: Any

[3 May 2009 10:59] Domas Mituzas

Description:
Certain database operations write invalid entries into RBR (eventlength=0), which cause MySQL to endlessly loop while trying to write those entries from binlog cache to actual binlog. 

How to repeat:
Load attached dump

Suggested fix:
don't freeze

[3 May 2009 10:59] Domas Mituzas

crash!

Attachment: cx.sql.gz (application/x-gzip, text), 17.63 KiB.

[3 May 2009 11:02] Domas Mituzas

depending on bug scope, can be security issue. due to user-session able to switch to rbr, there's no workaround to guard from users exploiting this.

[14 May 2009 7:30] Zhenxing He

Dup of BUG#42749