[MDEV-31521] bzero wipes more bytes than necessary in set_global_from_ddl_log_entry - Jira

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Type: Bug
Status: Closed (View Workflow)
Priority: Blocker
Resolution: Fixed
Affects Version/s: 10.6, 10.11, 11.1(EOL), 10.7(EOL), 10.8(EOL), 10.9(EOL), 10.10(EOL), 11.0(EOL)
Fix Version/s: 10.8.8, 10.6.15, 10.9.8, 10.10.6
Component/s: Server
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Description

This call of bzero in ddl_log.cc will use a wrong number of bytes to wipe: "global_ddl_log.name_pos - 18 + 16 + 8" instead of "global_ddl_log.name_pos - (18 + 16 + 8)"

#define DDL_LOG_UUID_POS 18

#define MY_UUID_SIZE 16

#define DDL_LOG_ID_POS DDL_LOG_UUID_POS + MY_UUID_SIZE

#define DDL_LOG_END_POS DDL_LOG_ID_POS + 8

...

  bzero(file_entry_buf+DDL_LOG_END_POS,

        global_ddl_log.name_pos - DDL_LOG_END_POS);

Expressions in #defines should be wrapped in ( ).

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Assignee:: Alexey Botchkov

Reporter:: Yury Chaikou

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 2023-06-22 00:23

Updated:: 2023-07-13 21:46

Resolved:: 2023-07-13 21:46

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