diff options
Diffstat (limited to 'src/backend/utils')
| -rw-r--r-- | src/backend/utils/mmgr/dsa.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/backend/utils/mmgr/dsa.c b/src/backend/utils/mmgr/dsa.c index 6d5d12a6c9d..d08317249bb 100644 --- a/src/backend/utils/mmgr/dsa.c +++ b/src/backend/utils/mmgr/dsa.c @@ -1314,6 +1314,13 @@ attach_internal(void *place, dsm_segment *segment, dsa_handle handle) /* Bump the reference count. */ LWLockAcquire(DSA_AREA_LOCK(area), LW_EXCLUSIVE); + if (control->refcnt == 0) + { + /* We can't attach to a DSA area that has already been destroyed. */ + ereport(ERROR, + (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE), + errmsg("could not attach to dsa_area"))); + } ++control->refcnt; LWLockRelease(DSA_AREA_LOCK(area)); |