From 7706a5f2d35c6192a557fe7a72f76ea4e2591daf Mon Sep 17 00:00:00 2001
From: Nick Rosbrook <nick.rosbrook@canonical.com>
Date: Tue, 22 Nov 2022 11:30:03 -0500
Subject: [PATCH] oomd: fix unreachable test case in test-oomd-util

This conditional with !empty_or_root(ctx->path) always returns false
because the most recent oomd_cgroup_context_acquire() call was with the
root cgroup. Make sure this test case can be reached by checking cgroup
instead of ctx->path.

While here, use an unused uid (61183) instead of the nobody uid so the
test case does not fail in unprivileged LXD containers.

(cherry picked from commit f05bcc18941eef5c2f93cfa06660eb06e0dc4c55)

Related: #2138081
---
 src/oom/test-oomd-util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/oom/test-oomd-util.c b/src/oom/test-oomd-util.c
index 176e3a8d69..faa75c5578 100644
--- a/src/oom/test-oomd-util.c
+++ b/src/oom/test-oomd-util.c
@@ -475,9 +475,9 @@ static void test_oomd_fetch_cgroup_oom_preference(void) {
 
         /* Assert that avoid/omit are not set if the cgroup and prefix are not
          * owned by the same user.*/
-        if (test_xattrs && !empty_or_root(ctx->path)) {
+        if (test_xattrs && !empty_or_root(cgroup)) {
                 ctx = oomd_cgroup_context_free(ctx);
-                assert_se(cg_set_access(SYSTEMD_CGROUP_CONTROLLER, cgroup, 65534, 0) >= 0);
+                assert_se(cg_set_access(SYSTEMD_CGROUP_CONTROLLER, cgroup, 61183, 0) >= 0);
                 assert_se(oomd_cgroup_context_acquire(cgroup, &ctx) == 0);
 
                 assert_se(oomd_fetch_cgroup_oom_preference(ctx, NULL) == 0);