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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2017-10-30 15:52:02 +0100 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2017-10-30 15:52:02 +0100 |
| commit | be72b9c378bfe99a3d175c98d36dc150229f4faf (patch) | |
| tree | fa9fdd0b62e905ebd1fa9881eb00d0fe8da9c96a /src/backend/access/gist/gist.c | |
| parent | 77954f996cdb31ead2718aa3a9b4878da382e385 (diff) | |
| download | postgresql-be72b9c378bfe99a3d175c98d36dc150229f4faf.tar.gz postgresql-be72b9c378bfe99a3d175c98d36dc150229f4faf.zip | |
Fix autovacuum work item error handling
In autovacuum's "work item" processing, a few strings were allocated in
the current transaction's memory context, which goes away during error
handling; if an error happened during execution of the work item, the
pfree() calls to clean up afterwards would try to release already-released
memory, possibly leading to a crash. In branch master, this was already
fixed by commit 335f3d04e4c8, so backpatch that to REL_10_STABLE to fix
the problem there too.
As a secondary problem, verify that the autovacuum worker is connected
to the right database for each work item; otherwise some items would be
discarded by workers in other databases.
Reported-by: Justin Pryzby
Discussion: https://postgr.es/m/20171014035732.GB31726@telsasoft.com
Diffstat (limited to 'src/backend/access/gist/gist.c')
0 files changed, 0 insertions, 0 deletions