1 files changed, 44 insertions, 3 deletions

diff --git a/tools/testing/selftests/bpf/progs/test_skeleton.c b/tools/testing/selftests/bpf/progs/test_skeleton.c
index 77ae86f44db5..adece9f91f58 100644
--- a/tools/testing/selftests/bpf/progs/test_skeleton.c
+++ b/tools/testing/selftests/bpf/progs/test_skeleton.c
@@ -5,6 +5,8 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
+#define __read_mostly SEC(".data.read_mostly")
+
 struct s {
 	int a;
 	long long b;
@@ -20,7 +22,9 @@ long long in4 __attribute__((aligned(64))) = 0;
 struct s in5 = {};
 
 /* .rodata section */
-const volatile int in6 = 0;
+const volatile struct {
+	const int in6;
+} in = {};
 
 /* .data section */
 int out1 = -1;
@@ -36,21 +40,58 @@ extern int LINUX_KERNEL_VERSION __kconfig;
 bool bpf_syscall = 0;
 int kern_ver = 0;
 
+struct s out5 = {};
+
+
+const volatile int in_dynarr_sz SEC(".rodata.dyn");
+const volatile int in_dynarr[4] SEC(".rodata.dyn") = { -1, -2, -3, -4 };
+
+int out_dynarr[4] SEC(".data.dyn") = { 1, 2, 3, 4 };
+
+int read_mostly_var __read_mostly;
+int out_mostly_var;
+
+char huge_arr[16 * 1024 * 1024];
+
+/* non-mmapable custom .data section */
+
+struct my_value { int x, y, z; };
+
+__hidden int zero_key SEC(".data.non_mmapable");
+static struct my_value zero_value SEC(".data.non_mmapable");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, int);
+	__type(value, struct my_value);
+	__uint(max_entries, 1);
+} my_map SEC(".maps");
+
 SEC("raw_tp/sys_enter")
 int handler(const void *ctx)
 {
-	static volatile struct s out5;
+	int i;
 
 	out1 = in1;
 	out2 = in2;
 	out3 = in3;
 	out4 = in4;
 	out5 = in5;
-	out6 = in6;
+	out6 = in.in6;
 
 	bpf_syscall = CONFIG_BPF_SYSCALL;
 	kern_ver = LINUX_KERNEL_VERSION;
 
+	for (i = 0; i < in_dynarr_sz; i++)
+		out_dynarr[i] = in_dynarr[i];
+
+	out_mostly_var = read_mostly_var;
+
+	huge_arr[sizeof(huge_arr) - 1] = 123;
+
+	/* make sure zero_key and zero_value are not optimized out */
+	bpf_map_update_elem(&my_map, &zero_key, &zero_value, BPF_ANY);
+
 	return 0;
 }