From 399d80ba8c604d57e7df6c5118ea3258cce026d9 Mon Sep 17 00:00:00 2001
From: Anita Zhang <the.anitazha@gmail.com>
Date: Mon, 8 Mar 2021 10:51:12 -0800
Subject: [PATCH] oomd: add unit test to repro #18926

---
 src/oom/test-oomd-util.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/oom/test-oomd-util.c b/src/oom/test-oomd-util.c
index a0e583ac6b3..0b1a3adfccf 100644
--- a/src/oom/test-oomd-util.c
+++ b/src/oom/test-oomd-util.c
@@ -150,6 +150,7 @@ static void test_oomd_cgroup_context_acquire_and_insert(void) {
         assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == 0);
         c1 = hashmap_get(h1, cgroup);
         assert_se(c1);
+        assert_se(oomd_insert_cgroup_context(NULL, h1, cgroup) == -EEXIST);
 
          /* make sure certain values from h1 get updated in h2 */
         c1->pgscan = 5555;
-- 
2.47.3