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| {
| "calls: two calls returning different map pointers for lookup (hash, array)",
| .insns = {
| /* main prog */
| BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
| BPF_CALL_REL(11),
| BPF_JMP_IMM(BPF_JA, 0, 0, 1),
| BPF_CALL_REL(12),
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
| 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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
| BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
| BPF_MOV64_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| /* subprog 1 */
| BPF_LD_MAP_FD(BPF_REG_0, 0),
| BPF_EXIT_INSN(),
| /* subprog 2 */
| BPF_LD_MAP_FD(BPF_REG_0, 0),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .fixup_map_hash_48b = { 13 },
| .fixup_map_array_48b = { 16 },
| .result = ACCEPT,
| .retval = 1,
| },
| {
| "calls: two calls returning different map pointers for lookup (hash, map in map)",
| .insns = {
| /* main prog */
| BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
| BPF_CALL_REL(11),
| BPF_JMP_IMM(BPF_JA, 0, 0, 1),
| BPF_CALL_REL(12),
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
| 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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
| BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
| BPF_MOV64_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| /* subprog 1 */
| BPF_LD_MAP_FD(BPF_REG_0, 0),
| BPF_EXIT_INSN(),
| /* subprog 2 */
| BPF_LD_MAP_FD(BPF_REG_0, 0),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .fixup_map_in_map = { 16 },
| .fixup_map_array_48b = { 13 },
| .result = REJECT,
| .errstr = "only read from bpf_array is supported",
| },
| {
| "cond: two branches returning different map pointers for lookup (tail, tail)",
| .insns = {
| BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
| offsetof(struct __sk_buff, mark)),
| BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 3),
| BPF_LD_MAP_FD(BPF_REG_2, 0),
| BPF_JMP_IMM(BPF_JA, 0, 0, 2),
| BPF_LD_MAP_FD(BPF_REG_2, 0),
| BPF_MOV64_IMM(BPF_REG_3, 7),
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),
| BPF_MOV64_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .fixup_prog1 = { 5 },
| .fixup_prog2 = { 2 },
| .result_unpriv = REJECT,
| .errstr_unpriv = "tail_call abusing map_ptr",
| .result = ACCEPT,
| .retval = 42,
| },
| {
| "cond: two branches returning same map pointers for lookup (tail, tail)",
| .insns = {
| BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
| offsetof(struct __sk_buff, mark)),
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 3),
| BPF_LD_MAP_FD(BPF_REG_2, 0),
| BPF_JMP_IMM(BPF_JA, 0, 0, 2),
| BPF_LD_MAP_FD(BPF_REG_2, 0),
| BPF_MOV64_IMM(BPF_REG_3, 7),
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),
| BPF_MOV64_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .fixup_prog2 = { 2, 5 },
| .result_unpriv = ACCEPT,
| .result = ACCEPT,
| .retval = 42,
| },
|
|
