{ "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, },