| { |
| "map element value store of cleared call register", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0), |
| BPF_LD_MAP_FD(BPF_REG_1, 0), |
| BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), |
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), |
| BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .fixup_map_hash_48b = { 3 }, |
| .errstr_unpriv = "R1 !read_ok", |
| .errstr = "R1 !read_ok", |
| .result = REJECT, |
| .result_unpriv = REJECT, |
| }, |
| { |
| "map element value with unaligned store", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0), |
| BPF_LD_MAP_FD(BPF_REG_1, 0), |
| BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), |
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 17), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 3), |
| BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42), |
| BPF_ST_MEM(BPF_DW, BPF_REG_0, 2, 43), |
| BPF_ST_MEM(BPF_DW, BPF_REG_0, -2, 44), |
| BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, 0, 32), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, 2, 33), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, -2, 34), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_8, 5), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, 0, 22), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, 4, 23), |
| BPF_ST_MEM(BPF_DW, BPF_REG_8, -7, 24), |
| BPF_MOV64_REG(BPF_REG_7, BPF_REG_8), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, 3), |
| BPF_ST_MEM(BPF_DW, BPF_REG_7, 0, 22), |
| BPF_ST_MEM(BPF_DW, BPF_REG_7, 4, 23), |
| BPF_ST_MEM(BPF_DW, BPF_REG_7, -4, 24), |
| BPF_EXIT_INSN(), |
| }, |
| .fixup_map_hash_48b = { 3 }, |
| .errstr_unpriv = "R0 leaks addr", |
| .result = ACCEPT, |
| .result_unpriv = REJECT, |
| .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, |
| }, |
| { |
| "map element value with unaligned load", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0), |
| BPF_LD_MAP_FD(BPF_REG_1, 0), |
| BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), |
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11), |
| BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), |
| BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES, 9), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 3), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 2), |
| BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_8, 0), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_8, 2), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 5), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 4), |
| BPF_EXIT_INSN(), |
| }, |
| .fixup_map_hash_48b = { 3 }, |
| .errstr_unpriv = "R0 leaks addr", |
| .result = ACCEPT, |
| .result_unpriv = REJECT, |
| .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, |
| }, |
| { |
| "map element value is preserved across register spilling", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0), |
| BPF_LD_MAP_FD(BPF_REG_1, 0), |
| BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), |
| BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, offsetof(struct test_val, foo)), |
| BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42), |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -184), |
| BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1, 0), |
| BPF_ST_MEM(BPF_DW, BPF_REG_3, 0, 42), |
| BPF_EXIT_INSN(), |
| }, |
| .fixup_map_hash_48b = { 3 }, |
| .errstr_unpriv = "R0 leaks addr", |
| .result = ACCEPT, |
| .result_unpriv = REJECT, |
| .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, |
| }, |
