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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-03-31 17:06:22 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-03-31 17:06:22 -0400 |
| commit | fe3036527a1ff715bceb22ff5cba919001262a71 (patch) | |
| tree | 7212e3ea0194214b7fe802c29b53f0437085216d /src/backend/access/gist/gistxlog.c | |
| parent | 33cd0e5ea65d1fad0a579fa7ef0bab337246c231 (diff) | |
| download | postgresql-fe3036527a1ff715bceb22ff5cba919001262a71.tar.gz postgresql-fe3036527a1ff715bceb22ff5cba919001262a71.zip | |
Fix race condition in statext_store().
Must hold some lock on the pg_statistic_ext_data catalog *before*
we look up the tuple we aim to replace. Otherwise a concurrent
VACUUM FULL or similar operation could move it to a different TID,
leaving us trying to replace the wrong tuple.
Back-patch to v12 where this got broken.
Credit goes to Dean Rasheed; I'm just doing the clerical work.
Discussion: https://postgr.es/m/CAEZATCU0zHMDiQV0g8P2U+YSP9C1idUPrn79DajsbonwkN0xvQ@mail.gmail.com
Diffstat (limited to 'src/backend/access/gist/gistxlog.c')
0 files changed, 0 insertions, 0 deletions