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-rw-r--r--tools/testing/selftests/bpf/verifier/uninit.c39
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,
+},