Commit graph

5 commits

Author SHA1 Message Date
Marko Mäkelä
c14a39431b MDEV-30753 Possible corruption due to trx_purge_free_segment()
Starting with commit 0de3be8cfd (MDEV-30671),
the field TRX_UNDO_NEEDS_PURGE lost its previous meaning.
The following scenario is possible:

(1) InnoDB is killed at a point of time corresponding to the durable
execution of some fseg_free_step_not_header() but not
trx_purge_remove_log_hdr().
(2) After restart, the affected pages are allocated for something else.
(3) Purge will attempt to access the newly reallocated pages when looking
for some old undo log records.

trx_purge_free_segment(): Invoke trx_purge_remove_log_hdr() as the first
thing, to be safe. If the server is killed, some pages will never be
freed. That is the lesser evil. Also, before each mtr.start(), invoke
log_free_check() to prevent ib_logfile0 overrun.
2023-02-28 15:39:23 +02:00
Oleksandr Byelkin
cf63eecef4 Merge branch '10.4' into 10.5 2022-02-01 20:33:04 +01:00
Oleksandr Byelkin
a576a1cea5 Merge branch '10.3' into 10.4 2022-01-30 09:46:52 +01:00
Oleksandr Byelkin
41a163ac5c Merge branch '10.2' into 10.3 2022-01-29 15:41:05 +01:00
Vladislav Vaintroub
47e18af906 MDEV-27494 Rename .ic files to .inl 2022-01-17 16:41:51 +01:00
Renamed from storage/innobase/include/log0log.ic (Browse further)