Merge tag 'v5.5-rc3' into sched/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 66358d66c933..3f655371eaf6 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -11,6 +11,7 @@
 #include <linux/trace_seq.h>
 #include <linux/spinlock.h>
 #include <linux/irq_work.h>
+#include <linux/security.h>
 #include <linux/uaccess.h>
 #include <linux/hardirq.h>
 #include <linux/kthread.h>	/* for self test */
@@ -5068,6 +5069,11 @@ static __init int test_ringbuffer(void)
 	int cpu;
 	int ret = 0;
 
+	if (security_locked_down(LOCKDOWN_TRACEFS)) {
+		pr_warn("Lockdown is enabled, skipping ring buffer tests\n");
+		return 0;
+	}
+
 	pr_info("Running ring buffer tests...\n");
 
 	buffer = ring_buffer_alloc(RB_TEST_BUFFER_SIZE, RB_FL_OVERWRITE);