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| author | Robert Haas <rhaas@postgresql.org> | 2017-03-29 09:44:29 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-03-29 09:48:39 -0400 |
| commit | fddf45b38097d14301d249fbeebca32e40233bd2 (patch) | |
| tree | 9f8fa462f059b3a18ef02380570084e6b1c18717 /src/backend/utils/adt/jsonfuncs.c | |
| parent | 3582b223d494cd505c6a22da98bcb49f99196645 (diff) | |
| download | postgresql-fddf45b38097d14301d249fbeebca32e40233bd2.tar.gz postgresql-fddf45b38097d14301d249fbeebca32e40233bd2.zip | |
Plug race in dsa_attach.
With sufficiently bad luck, it was possible for a parallel worker to
attempt attach to a DSA area after all other backends have detached
from it, which is not legal. If the worker had waited a little longer
to get started, the DSM itself would have been destroyed, which is why
this wasn't noticed before.
Thomas Munro, per a report from Andreas Seltenreich
Discussion: http://postgr.es/m/87h92g83t3.fsf@credativ.de
Diffstat (limited to 'src/backend/utils/adt/jsonfuncs.c')
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