Description: In MySQL 5.6, the following sequence may happen. In MySQL 5.1, this doesn't happen if sync_binlog=1, but in 5.6 this may happen regardless of sync_binlog settings. 1. master writes to binlog (writing to kernel buffer) 2. binlog dump threads read the binlog events and send to slaves 3. master flushes to binlog (fsync to binlog file) If OS crash happens between #2 and #3 on master, afte