1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/torture.c b/kernel/torture.c
index 8faa1a9aaeb9..17b2be9bde12 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -88,6 +88,8 @@ bool torture_offline(int cpu, long *n_offl_attempts, long *n_offl_successes,
 
         if (!cpu_online(cpu) || !cpu_is_hotpluggable(cpu))
                 return false;
+        if (num_online_cpus() <= 1)
+                return false;  /* Can't offline the last CPU. */
 
         if (verbose > 1)
                 pr_alert("%s" TORTURE_FLAG