1 files changed, 33 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/timer_start_deadlock.c b/tools/testing/selftests/bpf/prog_tests/timer_start_deadlock.c
new file mode 100644
index 000000000000..9f1f9aec8888
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/timer_start_deadlock.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2026 Meta Platforms, Inc. and affiliates. */
+#include <test_progs.h>
+#include "timer_start_deadlock.skel.h"
+
+void test_timer_start_deadlock(void)
+{
+	struct timer_start_deadlock *skel;
+	int err, prog_fd;
+	LIBBPF_OPTS(bpf_test_run_opts, opts);
+
+	skel = timer_start_deadlock__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
+		return;
+
+	err = timer_start_deadlock__attach(skel);
+	if (!ASSERT_OK(err, "skel_attach"))
+		goto cleanup;
+
+	prog_fd = bpf_program__fd(skel->progs.start_timer);
+
+	/*
+	 * Run the syscall program that attempts to deadlock.
+	 * If the kernel deadlocks, this call will never return.
+	 */
+	err = bpf_prog_test_run_opts(prog_fd, &opts);
+	ASSERT_OK(err, "prog_test_run");
+	ASSERT_EQ(opts.retval, 0, "prog_retval");
+
+	ASSERT_EQ(skel->bss->tp_called, 1, "tp_called");
+cleanup:
+	timer_start_deadlock__destroy(skel);
+}