| 1 |
|
| 2 | {
|
| 3 | "map_kptr: BPF_ST imm != 0",
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| 4 | .insns = {
|
| 5 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 6 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 7 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 8 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 9 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 10 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 11 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 12 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 13 | BPF_EXIT_INSN(),
|
| 14 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 1),
|
| 15 | BPF_EXIT_INSN(),
|
| 16 | },
|
| 17 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 18 | .fixup_map_kptr = { 1 },
|
| 19 | .result = REJECT,
|
| 20 | .errstr = "BPF_ST imm must be 0 when storing to kptr at off=0",
|
| 21 | },
|
| 22 | {
|
| 23 | "map_kptr: size != bpf_size_to_bytes(BPF_DW)",
|
| 24 | .insns = {
|
| 25 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 26 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 27 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 28 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 29 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 30 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 31 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 32 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 33 | BPF_EXIT_INSN(),
|
| 34 | BPF_ST_MEM(BPF_W, BPF_REG_0, 0, 0),
|
| 35 | BPF_EXIT_INSN(),
|
| 36 | },
|
| 37 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 38 | .fixup_map_kptr = { 1 },
|
| 39 | .result = REJECT,
|
| 40 | .errstr = "kptr access size must be BPF_DW",
|
| 41 | },
|
| 42 | {
|
| 43 | "map_kptr: map_value non-const var_off",
|
| 44 | .insns = {
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| 45 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 46 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 47 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 48 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 49 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 50 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 51 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 52 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 53 | BPF_EXIT_INSN(),
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| 54 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
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| 55 | BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0),
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| 56 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 1),
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| 57 | BPF_EXIT_INSN(),
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| 58 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2, 0),
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| 59 | BPF_JMP_IMM(BPF_JLE, BPF_REG_2, 4, 1),
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| 60 | BPF_EXIT_INSN(),
|
| 61 | BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
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| 62 | BPF_EXIT_INSN(),
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| 63 | BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_2),
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| 64 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0),
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| 65 | BPF_EXIT_INSN(),
|
| 66 | },
|
| 67 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 68 | .fixup_map_kptr = { 1 },
|
| 69 | .result = REJECT,
|
| 70 | .errstr = "kptr access cannot have variable offset",
|
| 71 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
|
| 72 | },
|
| 73 | {
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| 74 | "map_kptr: bpf_kptr_xchg non-const var_off",
|
| 75 | .insns = {
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| 76 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 77 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 78 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 79 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 80 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 81 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 82 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 83 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 84 | BPF_EXIT_INSN(),
|
| 85 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
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| 86 | BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0),
|
| 87 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 1),
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| 88 | BPF_EXIT_INSN(),
|
| 89 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2, 0),
|
| 90 | BPF_JMP_IMM(BPF_JLE, BPF_REG_2, 4, 1),
|
| 91 | BPF_EXIT_INSN(),
|
| 92 | BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
|
| 93 | BPF_EXIT_INSN(),
|
| 94 | BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_2),
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| 95 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_3),
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| 96 | BPF_MOV64_IMM(BPF_REG_2, 0),
|
| 97 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_kptr_xchg),
|
| 98 | BPF_EXIT_INSN(),
|
| 99 | },
|
| 100 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 101 | .fixup_map_kptr = { 1 },
|
| 102 | .result = REJECT,
|
| 103 | .errstr = "R1 doesn't have constant offset. kptr has to be at the constant offset",
|
| 104 | },
|
| 105 | {
|
| 106 | "map_kptr: unaligned boundary load/store",
|
| 107 | .insns = {
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| 108 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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| 109 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 110 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 111 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 112 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 113 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 114 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 115 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 116 | BPF_EXIT_INSN(),
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| 117 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 7),
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| 118 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0),
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| 119 | BPF_EXIT_INSN(),
|
| 120 | },
|
| 121 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 122 | .fixup_map_kptr = { 1 },
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| 123 | .result = REJECT,
|
| 124 | .errstr = "kptr access misaligned expected=0 off=7",
|
| 125 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
|
| 126 | },
|
| 127 | {
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| 128 | "map_kptr: reject var_off != 0",
|
| 129 | .insns = {
|
| 130 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 131 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 132 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 133 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 134 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 135 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 136 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 137 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 138 | BPF_EXIT_INSN(),
|
| 139 | BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
|
| 140 | BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
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| 141 | BPF_EXIT_INSN(),
|
| 142 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 0),
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| 143 | BPF_JMP_IMM(BPF_JLE, BPF_REG_2, 4, 1),
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| 144 | BPF_EXIT_INSN(),
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| 145 | BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
|
| 146 | BPF_EXIT_INSN(),
|
| 147 | BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
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| 148 | BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0),
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| 149 | BPF_EXIT_INSN(),
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| 150 | },
|
| 151 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
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| 152 | .fixup_map_kptr = { 1 },
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| 153 | .result = REJECT,
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| 154 | .errstr = "variable untrusted_ptr_ access var_off=(0x0; 0x7) disallowed",
|
| 155 | },
|
| 156 |
|
| 157 | {
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| 158 | "map_kptr: unref: reject btf_struct_ids_match == false",
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| 159 | .insns = {
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| 160 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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| 161 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 162 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 163 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 164 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 165 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 166 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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| 167 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 168 | BPF_EXIT_INSN(),
|
| 169 | BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
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| 170 | BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
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| 171 | BPF_EXIT_INSN(),
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| 172 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 4),
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| 173 | BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0),
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| 174 | BPF_EXIT_INSN(),
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| 175 | },
|
| 176 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
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| 177 | .fixup_map_kptr = { 1 },
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| 178 | .result = REJECT,
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| 179 | .errstr = "invalid kptr access, R1 type=untrusted_ptr_prog_test_ref_kfunc expected=ptr_prog_test",
|
| 180 | },
|
| 181 | {
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| 182 | "map_kptr: unref: loaded pointer marked as untrusted",
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| 183 | .insns = {
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| 184 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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| 185 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 186 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 187 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 188 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 189 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 190 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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| 191 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 192 | BPF_EXIT_INSN(),
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| 193 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
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| 194 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
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| 195 | BPF_EXIT_INSN(),
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| 196 | },
|
| 197 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 198 | .fixup_map_kptr = { 1 },
|
| 199 | .result = REJECT,
|
| 200 | .errstr = "R0 invalid mem access 'untrusted_ptr_or_null_'",
|
| 201 | },
|
| 202 | {
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| 203 | "map_kptr: unref: correct in kernel type size",
|
| 204 | .insns = {
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| 205 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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| 206 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 207 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 208 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 209 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 210 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 211 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 212 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 213 | BPF_EXIT_INSN(),
|
| 214 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
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| 215 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 216 | BPF_EXIT_INSN(),
|
| 217 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 32),
|
| 218 | BPF_EXIT_INSN(),
|
| 219 | },
|
| 220 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 221 | .fixup_map_kptr = { 1 },
|
| 222 | .result = REJECT,
|
| 223 | .errstr = "access beyond struct prog_test_ref_kfunc at off 32 size 8",
|
| 224 | },
|
| 225 | {
|
| 226 | "map_kptr: unref: inherit PTR_UNTRUSTED on struct walk",
|
| 227 | .insns = {
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| 228 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 229 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 230 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 231 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 232 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 233 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 234 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 235 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 236 | BPF_EXIT_INSN(),
|
| 237 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
|
| 238 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 239 | BPF_EXIT_INSN(),
|
| 240 | BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 16),
|
| 241 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_this_cpu_ptr),
|
| 242 | BPF_EXIT_INSN(),
|
| 243 | },
|
| 244 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 245 | .fixup_map_kptr = { 1 },
|
| 246 | .result = REJECT,
|
| 247 | .errstr = "R1 type=untrusted_ptr_ expected=percpu_ptr_",
|
| 248 | },
|
| 249 | {
|
| 250 | "map_kptr: unref: no reference state created",
|
| 251 | .insns = {
|
| 252 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 253 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 254 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 255 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 256 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 257 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 258 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 259 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 260 | BPF_EXIT_INSN(),
|
| 261 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
|
| 262 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 263 | BPF_EXIT_INSN(),
|
| 264 | BPF_EXIT_INSN(),
|
| 265 | },
|
| 266 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 267 | .fixup_map_kptr = { 1 },
|
| 268 | .result = ACCEPT,
|
| 269 | },
|
| 270 | {
|
| 271 | "map_kptr: unref: bpf_kptr_xchg rejected",
|
| 272 | .insns = {
|
| 273 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 274 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 275 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 276 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 277 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 278 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 279 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 280 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 281 | BPF_EXIT_INSN(),
|
| 282 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
| 283 | BPF_MOV64_IMM(BPF_REG_2, 0),
|
| 284 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_kptr_xchg),
|
| 285 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 286 | BPF_EXIT_INSN(),
|
| 287 | },
|
| 288 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 289 | .fixup_map_kptr = { 1 },
|
| 290 | .result = REJECT,
|
| 291 | .errstr = "off=0 kptr isn't referenced kptr",
|
| 292 | },
|
| 293 |
|
| 294 | {
|
| 295 | "map_kptr: ref: loaded pointer marked as untrusted",
|
| 296 | .insns = {
|
| 297 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 298 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 299 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 300 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 301 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 302 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 303 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 304 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 305 | BPF_EXIT_INSN(),
|
| 306 | BPF_MOV64_IMM(BPF_REG_1, 0),
|
| 307 | BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 8),
|
| 308 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_this_cpu_ptr),
|
| 309 | BPF_EXIT_INSN(),
|
| 310 | },
|
| 311 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 312 | .fixup_map_kptr = { 1 },
|
| 313 | .result = REJECT,
|
| 314 | .errstr = "R1 type=rcu_ptr_or_null_ expected=percpu_ptr_",
|
| 315 | },
|
| 316 | {
|
| 317 | "map_kptr: ref: reject off != 0",
|
| 318 | .insns = {
|
| 319 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 320 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 321 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 322 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 323 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 324 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 325 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 326 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 327 | BPF_EXIT_INSN(),
|
| 328 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
| 329 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
|
| 330 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
| 331 | BPF_MOV64_IMM(BPF_REG_2, 0),
|
| 332 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_kptr_xchg),
|
| 333 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 334 | BPF_EXIT_INSN(),
|
| 335 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
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| 336 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
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| 337 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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| 338 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
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| 339 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_kptr_xchg),
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| 340 | BPF_EXIT_INSN(),
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| 341 | },
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| 342 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
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| 343 | .fixup_map_kptr = { 1 },
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| 344 | .result = REJECT,
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| 345 | .errstr = "invalid kptr access, R2 type=ptr_prog_test_ref_kfunc expected=ptr_prog_test_member",
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| 346 | },
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| 347 | {
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| 348 | "map_kptr: ref: reference state created and released on xchg",
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| 349 | .insns = {
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| 350 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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| 351 | BPF_LD_MAP_FD(BPF_REG_6, 0),
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| 352 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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| 353 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
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| 354 | BPF_MOV64_IMM(BPF_REG_0, 0),
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| 355 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
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| 356 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 357 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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| 358 | BPF_EXIT_INSN(),
|
| 359 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
| 360 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
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| 361 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
| 362 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
|
| 363 | BPF_ST_MEM(BPF_DW, BPF_REG_1, 0, 0),
|
| 364 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0),
|
| 365 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 366 | BPF_EXIT_INSN(),
|
| 367 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
|
| 368 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
|
| 369 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_kptr_xchg),
|
| 370 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 371 | BPF_EXIT_INSN(),
|
| 372 | },
|
| 373 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 374 | .fixup_map_kptr = { 1 },
|
| 375 | .result = REJECT,
|
| 376 | .errstr = "Unreleased reference id=4 alloc_insn=20",
|
| 377 | .fixup_kfunc_btf_id = {
|
| 378 | { "bpf_kfunc_call_test_acquire", 15 },
|
| 379 | }
|
| 380 | },
|
| 381 | {
|
| 382 | "map_kptr: ref: reject STX",
|
| 383 | .insns = {
|
| 384 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 385 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 386 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 387 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 388 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 389 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 390 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 391 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 392 | BPF_EXIT_INSN(),
|
| 393 | BPF_MOV64_REG(BPF_REG_1, 0),
|
| 394 | BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
|
| 395 | BPF_EXIT_INSN(),
|
| 396 | },
|
| 397 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 398 | .fixup_map_kptr = { 1 },
|
| 399 | .result = REJECT,
|
| 400 | .errstr = "store to referenced kptr disallowed",
|
| 401 | },
|
| 402 | {
|
| 403 | "map_kptr: ref: reject ST",
|
| 404 | .insns = {
|
| 405 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 406 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 407 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 408 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 409 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 410 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 411 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 412 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 413 | BPF_EXIT_INSN(),
|
| 414 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 8, 0),
|
| 415 | BPF_EXIT_INSN(),
|
| 416 | },
|
| 417 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 418 | .fixup_map_kptr = { 1 },
|
| 419 | .result = REJECT,
|
| 420 | .errstr = "store to referenced kptr disallowed",
|
| 421 | },
|
| 422 | {
|
| 423 | "map_kptr: reject helper access to kptr",
|
| 424 | .insns = {
|
| 425 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
| 426 | BPF_LD_MAP_FD(BPF_REG_6, 0),
|
| 427 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 428 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
|
| 429 | BPF_MOV64_IMM(BPF_REG_0, 0),
|
| 430 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0),
|
| 431 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
| 432 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
| 433 | BPF_EXIT_INSN(),
|
| 434 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
| 435 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2),
|
| 436 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
|
| 437 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_delete_elem),
|
| 438 | BPF_EXIT_INSN(),
|
| 439 | },
|
| 440 | .prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
| 441 | .fixup_map_kptr = { 1 },
|
| 442 | .result = REJECT,
|
| 443 | .errstr = "kptr cannot be accessed indirectly by helper",
|
| 444 | },
|