Bug #18384 InnoDB memory leak on duplicate key errors in 5.0 if row has many columns

• Submitted: 21 Mar 2006 8:14
• Modified: 19 Jun 2010 0:05
• Reporter: Heikki Tuuri
• Status: Closed
• Category: MySQL Server: InnoDB storage engine
• Severity: S2 (Serious)
• Version: 5.0.3 and later
• OS: Any (All)
• Assigned to: Marko Mäkelä
• CPU Architecture: Any

[21 Mar 2006 8:14] Heikki Tuuri

Description:
InnoDB leaks memory in the code below because it forgets to free heap. The leak only happens with rows with about 90 columns or more.

row0ins.c:

        if (cursor->low_match >= n_unique) {

                rec = btr_cur_get_rec(cursor);

                if (!page_rec_is_infimum(rec)) {
                        offsets = rec_get_offsets(rec, cursor->index, offsets,
                                                ULINT_UNDEFINED, &heap);

Marko has a patch here:

http://bugs.mysql.com/bug.php?id=17674

How to repeat:
Use INSERT IGNORE to a table with many duplicates.

Suggested fix:
Marko has a patch.

[21 Mar 2006 9:14] Marko Mäkelä

I have committed the patch to the InnoDB source code repository.

[5 Apr 2006 19:19] Elliot Murphy

Fixed in InnoDB snapshot368; fixes are in 5.0.20.

[11 Apr 2006 2:15] Paul DuBois

Noted in 5.0.20 changelog.

<literal>InnoDB</literal> had a memory leak for duplicate-key
errors with tables having 90 columns or more. (Bug #18384)

[5 May 2010 15:18] Bugs System

Pushed into 5.1.47 (revid:[e-mail]-20100505145753-ivlt4hclbrjy8eye) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)

[6 May 2010 1:58] Paul DuBois

Push resulted from incorporation of InnoDB tree. No changes pertinent to this bug. Re-closing.

[28 May 2010 6:06] Bugs System

Pushed into mysql-next-mr (revid:[e-mail]-20100524190136-egaq7e8zgkwb9aqi) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (pib:16)

[28 May 2010 6:35] Bugs System

Pushed into 6.0.14-alpha (revid:[e-mail]-20100524190941-nuudpx60if25wsvx) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)

[28 May 2010 7:02] Bugs System

Pushed into 5.5.5-m3 (revid:[e-mail]-20100524185725-c8k5q7v60i5nix3t) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)

[29 May 2010 15:29] Paul DuBois

Push resulted from incorporation of InnoDB tree. No changes pertinent to this bug.
Re-closing.

[17 Jun 2010 12:06] Bugs System

Pushed into 5.1.47-ndb-7.0.16 (revid:[e-mail]-20100617114014-bva0dy24yyd67697) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)

[17 Jun 2010 12:52] Bugs System

Pushed into 5.1.47-ndb-6.2.19 (revid:[e-mail]-20100617115448-idrbic6gbki37h1c) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)

[17 Jun 2010 13:34] Bugs System

Pushed into 5.1.47-ndb-6.3.35 (revid:[e-mail]-20100617114611-61aqbb52j752y116) (version source revid:[e-mail]-20100331130613-8ja7n0vh36a80457) (merge vers: 5.1.46) (pib:16)