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-rw-r--r--tools/testing/selftests/bpf/verifier/prevent_map_lookup.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/prevent_map_lookup.c b/tools/testing/selftests/bpf/verifier/prevent_map_lookup.c
new file mode 100644
index 000000000..fc4e30126
--- /dev/null
+++ b/tools/testing/selftests/bpf/verifier/prevent_map_lookup.c
@@ -0,0 +1,29 @@
+{
+ "prevent map lookup in stack trace",
+ .insns = {
+ BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+ BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
+ BPF_LD_MAP_FD(BPF_REG_1, 0),
+ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
+ BPF_EXIT_INSN(),
+ },
+ .fixup_map_stacktrace = { 3 },
+ .result = REJECT,
+ .errstr = "cannot pass map_type 7 into func bpf_map_lookup_elem",
+ .prog_type = BPF_PROG_TYPE_PERF_EVENT,
+},
+{
+ "prevent map lookup in prog array",
+ .insns = {
+ BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+ BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
+ BPF_LD_MAP_FD(BPF_REG_1, 0),
+ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
+ BPF_EXIT_INSN(),
+ },
+ .fixup_prog2 = { 3 },
+ .result = REJECT,
+ .errstr = "cannot pass map_type 3 into func bpf_map_lookup_elem",
+},