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-rw-r--r--src/service.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/service.c b/src/service.c
index 82a18a4311..547a55567a 100644
--- a/src/service.c
+++ b/src/service.c
@@ -936,6 +936,9 @@ static int service_load_pid_file(Service *s) {
if ((unsigned long) (pid_t) p != p)
return -ERANGE;
+ if (p <= 1)
+ return -ERANGE;
+
if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
(unsigned long long) p, s->pid_file);