| Bug #36375 | NDBAPI : Segfault when old Api scan closed before execute() | ||
|---|---|---|---|
| Submitted: | 28 Apr 2008 13:08 | Modified: | 9 Jul 2008 9:07 |
| Reporter: | Frazer Clement | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Cluster: NDB API | Severity: | S3 (Non-critical) |
| Version: | 5.1-telco-6.2+ | OS: | Any |
| Assigned to: | Frazer Clement | CPU Architecture: | Any |
[28 Apr 2008 14:25]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/46125 ChangeSet@1.2589, 2008-04-28 15:23:30+01:00, frazer@forth.ndb.mysql.com +1 -0 Bug #36375 Issue when old Api scan operation is closed before it has been executed. Uninitialised members are used during scan close, and this can result in a SEGV. Testcase for Bug 36124 provides coverage : testScan -n Bug36124
[28 Apr 2008 16:23]
Bugs System
Pushed into 5.1.23-ndb-6.4.0
[28 Apr 2008 16:25]
Bugs System
Pushed into 5.1.24-ndb-6.3.13
[28 Apr 2008 16:29]
Bugs System
Pushed into 5.1.24-ndb-6.2.14
[9 Jul 2008 9:07]
Jon Stephens
Documented bugfix in the 5.1.23-ndb-6.2.14 and 5.1.24-ndb-6.3.13 changelogs as follows:
Closing a scan before was executed caused the application to
segfault.
Closed.
[12 Dec 2008 23:27]
Bugs System
Pushed into 6.0.6-alpha (revid:sp1r-frazer@forth.ndb.mysql.com-20080428142330-12313) (version source revid:jonas@mysql.com-20080808094047-4e1yiarqa2t3opg3) (pib:5)
Description: When an 'old Api' scan is created and then closed (or the transaction containing it is closed), a segmentation fault can occur. How to repeat: Running the code below in a loop appears to expose the issue after a number of iterations. NdbTransaction* pCon = pNdb->startTransaction(); NdbScanOperation* pOp = pCon->getNdbScanOperation(pTab->getName()); if (pOp == NULL) { ERR(pCon->getNdbError()); return NDBT_FAILED; } if( pOp->readTuples(NdbOperation::LM_Read) != 0) { ERR(pCon->getNdbError()); return NDBT_FAILED; } if( pOp->getValue(NdbDictionary::Column::ROW_COUNT) == 0) { ERR(pCon->getNdbError()); return NDBT_FAILED; } /* Old style interpreted code api should fail when * we try to use it */ if( pOp->interpret_exit_last_row() == 0) { return NDBT_FAILED; } pOp->close(); pCon->close(); Suggested fix: Ensure member variables used as part of NdbScanOperation->close() are always initialised.