[MXS-269] Crash in MySQL backend protocol Created: 2015-07-15 Updated: 2015-08-21 Resolved: 2015-08-21 |
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| Status: | Closed |
| Project: | MariaDB MaxScale |
| Component/s: | mariadbbackend |
| Affects Version/s: | 1.2.1 |
| Fix Version/s: | 1.3.0 |
| Type: | Bug | Priority: | Blocker |
| Reporter: | martin brampton (Inactive) | Assignee: | martin brampton (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Environment: |
CentOS 6.5 |
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| Description |
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During tests with mysqlslap running against the current develop branch, MaxScale crashed with a segment fault: This suggests that the session pointed to by the DCB passed to gw_read_backend_event was freed during processing. Unfortunately, I was looking for other things and did not gather any additional diagnostic information. The problem does not readily repeat. |
| Comments |
| Comment by Dipti Joshi (Inactive) [ 2015-07-15 ] |
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martin brampton: Did you use debug build ? Do you have core dump ? |
| Comment by martin brampton (Inactive) [ 2015-07-17 ] |
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I believe that this problem is related to persistent connections. |
| Comment by Johan Wikman [ 2015-08-21 ] |
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Martin, any news on this one? |
| Comment by martin brampton (Inactive) [ 2015-08-21 ] |
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Yes, I believe it was fixed as part of the persistent connections development. It related to how to safely detach the connection from the old session and make it available for attachment to a new one. I think it was only loosely related to other crashes. |
| Comment by martin brampton (Inactive) [ 2015-08-21 ] |
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No recurrence of problem despite long test runs |