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-rw-r--r--src/libsystemd/sd-daemon/sd-daemon.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsystemd/sd-daemon/sd-daemon.c b/src/libsystemd/sd-daemon/sd-daemon.c
index f0d5d00b2e..f1e9b7ed1b 100644
--- a/src/libsystemd/sd-daemon/sd-daemon.c
+++ b/src/libsystemd/sd-daemon/sd-daemon.c
@@ -591,7 +591,7 @@ _public_ int sd_watchdog_enabled(int unset_environment, uint64_t *usec) {
r = safe_atou64(s, &u);
if (r < 0)
goto finish;
- if (u <= 0) {
+ if (u <= 0 || u >= USEC_INFINITY) {
r = -EINVAL;
goto finish;
}