cgroup: suppress sending follow-up SIGCONT after sending SIGCONT/SIGKILL anyway

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 1e9ec33a97204a140a67687e257013733386b6f5..c98c1c4003dff4aa18c8d7419ef3f97d2e12ad80 100644 (file)
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -213,6 +213,11 @@ int cg_kill(
 
         assert(sig >= 0);
 
+         /* Don't send SIGCONT twice. Also, SIGKILL always works even when process is suspended, hence don't send
+          * SIGCONT on SIGKILL. */
+        if (IN_SET(sig, SIGCONT, SIGKILL))
+                flags &= ~CGROUP_SIGCONT;
+
         /* This goes through the tasks list and kills them all. This
          * is repeated until no further processes are added to the
          * tasks list, to properly handle forking processes */