tools/testing/selftests/bpf/verifier/bpf_get_stack.c

   1 {
   2         "bpf_get_stack return R0 within range",
   3         .insns = {
   4         BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
   5         BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
   6         BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
   7         BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
   8         BPF_LD_MAP_FD(BPF_REG_1, 0),
   9         BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
  10         BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 28),
  11         BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
  12         BPF_MOV64_IMM(BPF_REG_9, sizeof(struct test_val)/2),
  13         BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
  14         BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
  15         BPF_MOV64_IMM(BPF_REG_3, sizeof(struct test_val)/2),
  16         BPF_MOV64_IMM(BPF_REG_4, 256),
  17         BPF_EMIT_CALL(BPF_FUNC_get_stack),
  18         BPF_MOV64_IMM(BPF_REG_1, 0),
  19         BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
  20         BPF_ALU64_IMM(BPF_LSH, BPF_REG_8, 32),
  21         BPF_ALU64_IMM(BPF_ARSH, BPF_REG_8, 32),
  22         BPF_JMP_REG(BPF_JSGT, BPF_REG_1, BPF_REG_8, 16),
  23         BPF_ALU64_REG(BPF_SUB, BPF_REG_9, BPF_REG_8),
  24         BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
  25         BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_8),
  26         BPF_MOV64_REG(BPF_REG_1, BPF_REG_9),
  27         BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 32),
  28         BPF_ALU64_IMM(BPF_ARSH, BPF_REG_1, 32),
  29         BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
  30         BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_1),
  31         BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
  32         BPF_MOV64_IMM(BPF_REG_5, sizeof(struct test_val)/2),
  33         BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_5),
  34         BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 4),
  35         BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
  36         BPF_MOV64_REG(BPF_REG_3, BPF_REG_9),
  37         BPF_MOV64_IMM(BPF_REG_4, 0),
  38         BPF_EMIT_CALL(BPF_FUNC_get_stack),
  39         BPF_EXIT_INSN(),
  40         },
  41         .fixup_map_hash_48b = { 4 },
  42         .result = ACCEPT,
  43         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
  44 },