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52a2bc27cc
If the replication IO Thread receives a Rotate event following a Format Description event (FDE) with no post-header length for Rotate events, the Rotate event’s parser constructor indexes the FDE’s post-header lengths array out of bounds. This commit defends against this situation by checking before the constructor that the FDE describes Rotate events as recognized at all. In practice, because the Binlog Dump thread generates a Fake `ROTATE_EVENT` **before** sending the FDE, it has pinned Rotate events’ post-header length to 8 regardless of FDEs. This fix solution considers that the FDE’s description should still be respected, matching the constructor. Reviewed-by: Kristian Nielsen <knielsen@knielsen-hq.org>
11 lines
457 B
Plaintext
11 lines
457 B
Plaintext
SET @saved_dbug= @@GLOBAL.debug_dbug;
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SET @@GLOBAL.debug_dbug=
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'+d,truncate_fde_post_header_len,truncate_fde_used_checksum_alg';
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FLUSH BINARY LOGS;
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ERROR HY000: Error when executing command SHOW BINLOG EVENTS: Wrong offset or I/O error
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SET @@GLOBAL.debug_dbug= '+d,truncate_fde_common_header_len';
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FLUSH BINARY LOGS;
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ERROR HY000: Error when executing command SHOW BINLOG EVENTS: Wrong offset or I/O error
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SET @@GLOBAL.debug_dbug= @saved_dbug;
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RESET MASTER;
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