external/pg_stat_monitor
1
0
Fork 0
mirror of https://github.com/percona/pg_stat_monitor.git synced 2026-02-04 05:56:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

PG-286: Check for NULL return on hash_search before using object.

Browse Source 
Check if hash_search() function returns NULL before attempting to
use the object in hash_entry_alloc().
This commit is contained in:
Diego Fronza
2021-12-04 11:01:39 -03:00
committed by Hamid Akhtar
parent b798ffd461
commit 258fa7faa4
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
hash_query.c
View File

@@ -140,7 +140,9 @@ hash_entry_alloc(pgssSharedState *pgss, pgssHashKey *key, int encoding)
}
/* Find or create an entry with desired hash code */
entry = (pgssEntry *) hash_search(pgss_hash, key, HASH_ENTER_NULL, &found);
if (!found)
if (entry == NULL)
pgsm_log_error("hash_entry_alloc: OUT OF MEMORY");
else if (!found)
{
pgss->bucket_entry[pg_atomic_read_u64(&pgss->current_wbucket)]++;
/* New entry, initialize it */
@@ -152,8 +154,7 @@ hash_entry_alloc(pgssSharedState *pgss, pgssHashKey *key, int encoding)
/* ... and don't forget the query text metadata */
entry->encoding = encoding;
}
if (entry == NULL)
elog(DEBUG1, "%s", "pg_stat_monitor: out of memory");
return entry;
}