1 files changed, 39 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/uninit.c b/tools/testing/selftests/bpf/verifier/uninit.c
new file mode 100644
index 000000000..987a5871f
--- /dev/null
+++ b/tools/testing/selftests/bpf/verifier/uninit.c
@@ -0,0 +1,39 @@
+{
+	"read uninitialized register",
+	.insns = {
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	BPF_EXIT_INSN(),
+	},
+	.errstr = "R2 !read_ok",
+	.result = REJECT,
+},
+{
+	"read invalid register",
+	.insns = {
+	BPF_MOV64_REG(BPF_REG_0, -1),
+	BPF_EXIT_INSN(),
+	},
+	.errstr = "R15 is invalid",
+	.result = REJECT,
+},
+{
+	"program doesn't init R0 before exit",
+	.insns = {
+	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
+	BPF_EXIT_INSN(),
+	},
+	.errstr = "R0 !read_ok",
+	.result = REJECT,
+},
+{
+	"program doesn't init R0 before exit in all branches",
+	.insns = {
+	BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2),
+	BPF_EXIT_INSN(),
+	},
+	.errstr = "R0 !read_ok",
+	.errstr_unpriv = "R1 pointer comparison",
+	.result = REJECT,
+},