{ "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 = "R0 invalid mem access 'map_ptr'", }, { "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, },