| { |
| "direct stack access with 32-bit wraparound. test1", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff), |
| BPF_MOV32_IMM(BPF_REG_0, 0), |
| BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr = "fp pointer and 2147483647", |
| .result = REJECT |
| }, |
| { |
| "direct stack access with 32-bit wraparound. test2", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff), |
| BPF_MOV32_IMM(BPF_REG_0, 0), |
| BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr = "fp pointer and 1073741823", |
| .result = REJECT |
| }, |
| { |
| "direct stack access with 32-bit wraparound. test3", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff), |
| BPF_MOV32_IMM(BPF_REG_0, 0), |
| BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr = "fp pointer offset 1073741822", |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .result = REJECT |
| }, |
