| Bug #47139 | Test "merge" crashes in "embedded" run | ||
|---|---|---|---|
| Submitted: | 4 Sep 2009 13:32 | Modified: | 14 Oct 2010 13:35 |
| Reporter: | Joerg Bruehe | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Embedded Library ( libmysqld ) | Severity: | S3 (Non-critical) |
| Version: | 5.4.2-beta | OS: | FreeBSD |
| Assigned to: | Alexey Botchkov | CPU Architecture: | Any |
[11 Nov 2009 3:13]
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/90038 2945 Alexey Botchkov 2009-11-10 Bug #47139 Test "merge" crashes in "embedded" run In fact this crashes in normal (not embedded) run also. The problem is in the memory mapping. Handling the ha_myisammrg::extra(MMAP) the MERGE engine tries to mmap all the tables it unites. Though some can be empty and then in the mi_dynmap_file() we call the my_mmap(0). Normally this call returns MAP_FAILED, but not on FreeBSD. There it returns like a 'normal' value, and after the consequitive munmap systems gets unstable and crashes on some system call later. per-file comments: storage/myisam/mi_dynrec.c Bug #47139 Test "merge" crashes in "embedded" run don't try to mmap zero-length area, just return at once.
[11 Nov 2009 6:57]
Alexander Barkov
The patch http://lists.mysql.com/commits/90038 looks Ok to push.
[11 Nov 2009 8:58]
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/90059 2945 Alexey Botchkov 2009-11-11 Bug #47139 Test "merge" crashes in "embedded" run In fact this crashes in normal (not embedded) run also. The problem is in the memory mapping. Handling the ha_myisammrg::extra(MMAP) the MERGE engine tries to mmap all the tables it unites. Though some can be empty and then in the mi_dynmap_file() we call the my_mmap(0). Normally this call returns MAP_FAILED, but not on FreeBSD. There it returns like a 'normal' value, and after the consequitive munmap systems gets unstable and crashes on some system call later. per-file comments: storage/myisam/mi_dynrec.c Bug #47139 Test "merge" crashes in "embedded" run don't try to mmap zero-length area, just return at once.
[11 Nov 2009 9:02]
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/90060 2917 Alexey Botchkov 2009-11-11 Bug #47139 Test "merge" crashes in "embedded" run In fact this crashes in normal (not embedded) run also. The problem is in the memory mapping. Handling the ha_myisammrg::extra(MMAP) the MERGE engine tries to mmap all the tables it unites. Though some can be empty and then in the mi_dynmap_file() we call the my_mmap(0). Normally this call returns MAP_FAILED, but not on FreeBSD. There it returns like a 'normal' value, and after the consequitive munmap systems gets unstable and crashes on some system call later. per-file comments: storage/myisam/mi_dynrec.c Bug #47139 Test "merge" crashes in "embedded" run don't try to mmap zero-length area, just return at once.
[11 Nov 2009 12:58]
Alexey Botchkov
mysql-next-mr-alik
[13 Nov 2009 9:19]
Bugs System
Pushed into 6.0.14-alpha (revid:alik@ibmvm-20091112005514-6ykwpvff6w3hnz28) (version source revid:alik@ibmvm-20091112005023-3ju8y7g1y0u15nqi) (merge vers: 6.0.14-alpha) (pib:13)
[13 Nov 2009 9:19]
Bugs System
Pushed into 5.5.0-beta (revid:alik@sun.com-20091112150024-undyu20ovoolelwq) (version source revid:holyfoot@mysql.com-20091110211030-pjdib23gkasbga41) (merge vers: 5.5.0-beta) (pib:13)
[17 Nov 2009 16:45]
Paul DuBois
Noted in 5.5.0, 6.0.14 changelogs. On FreeBSD, memory mapping for MERGE tables could fail if underlying tables were empty.
[16 Jul 2010 17:33]
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/113784 3490 Davi Arnaut 2010-07-16 Bug#48327: Some crashes specific to FreeBSD ("embedded") Bug#47139: Test "merge" crashes in "embedded" run Backport patch for Bug#47139
[22 Jul 2010 15:35]
Paul DuBois
Noted in 5.1.50 changelog.
[23 Jul 2010 12:23]
Bugs System
Pushed into mysql-trunk 5.5.6-m3 (revid:alik@sun.com-20100723121820-jryu2fuw3pc53q9w) (version source revid:vasil.dimov@oracle.com-20100531152341-x2d4hma644icamh1) (merge vers: 5.5.5-m3) (pib:18)
[23 Jul 2010 12:30]
Bugs System
Pushed into mysql-next-mr (revid:alik@sun.com-20100723121929-90e9zemk3jkr2ocy) (version source revid:vasil.dimov@oracle.com-20100531152341-x2d4hma644icamh1) (pib:18)
[19 Aug 2010 15:42]
Bugs System
Pushed into mysql-5.1 5.1.51 (revid:build@mysql.com-20100819151858-muaaor6jojb5ouzj) (version source revid:build@mysql.com-20100819151858-muaaor6jojb5ouzj) (merge vers: 5.1.51) (pib:20)
[14 Oct 2010 8:28]
Bugs System
Pushed into mysql-5.1-telco-7.0 5.1.51-ndb-7.0.20 (revid:martin.skold@mysql.com-20101014082627-jrmy9xbfbtrebw3c) (version source revid:martin.skold@mysql.com-20101014082627-jrmy9xbfbtrebw3c) (merge vers: 5.1.51-ndb-7.0.20) (pib:21)
[14 Oct 2010 8:43]
Bugs System
Pushed into mysql-5.1-telco-6.3 5.1.51-ndb-6.3.39 (revid:martin.skold@mysql.com-20101014083757-5qo48b86d69zjvzj) (version source revid:martin.skold@mysql.com-20101014083757-5qo48b86d69zjvzj) (merge vers: 5.1.51-ndb-6.3.39) (pib:21)
[14 Oct 2010 8:57]
Bugs System
Pushed into mysql-5.1-telco-6.2 5.1.51-ndb-6.2.19 (revid:martin.skold@mysql.com-20101014084420-y54ecj85j5we27oa) (version source revid:martin.skold@mysql.com-20101014084420-y54ecj85j5we27oa) (merge vers: 5.1.51-ndb-6.2.19) (pib:21)
[14 Oct 2010 13:35]
Jon Stephens
Already documented in the 5.1.50 changelog; no additional changelog entries required. Set back to Closed state.
Description: Happened in the 5.4.2-beta release build, only on FreeBSD, both 6.3 and 7.0, both x86 (32 bit) and x86_64 (64 bit): ===== main.merge [ retry-fail ] Test ended at YYYY-MM-DD HH:MM:SS CURRENT_TEST: main.merge mysqltest got signal 11 Backtrace not available. Writing a core file... - saving '/PATH/mysql-test/var/log/main.merge/' to '/PATH/mysql-test/var/log/main.merge/' Test has failed 2 times, no more retries! ===== How to repeat: Just try the test suite with the embedded server.