xref: /linux/tools/testing/selftests/bpf/verifier/basic_instr.c (revision 82e8d723e9e6698572098bf2976223d5069b34b5)
1 {
2 	"add+sub+mul",
3 	.insns = {
4 	BPF_MOV64_IMM(BPF_REG_1, 1),
5 	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 2),
6 	BPF_MOV64_IMM(BPF_REG_2, 3),
7 	BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_2),
8 	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
9 	BPF_ALU64_IMM(BPF_MUL, BPF_REG_1, 3),
10 	BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
11 	BPF_EXIT_INSN(),
12 	},
13 	.result = ACCEPT,
14 	.retval = -3,
15 },
16 {
17 	"xor32 zero extend check",
18 	.insns = {
19 	BPF_MOV32_IMM(BPF_REG_2, -1),
20 	BPF_ALU64_IMM(BPF_LSH, BPF_REG_2, 32),
21 	BPF_ALU64_IMM(BPF_OR, BPF_REG_2, 0xffff),
22 	BPF_ALU32_REG(BPF_XOR, BPF_REG_2, BPF_REG_2),
23 	BPF_MOV32_IMM(BPF_REG_0, 2),
24 	BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 1),
25 	BPF_MOV32_IMM(BPF_REG_0, 1),
26 	BPF_EXIT_INSN(),
27 	},
28 	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
29 	.result = ACCEPT,
30 	.retval = 1,
31 },
32 {
33 	"arsh32 on imm",
34 	.insns = {
35 	BPF_MOV64_IMM(BPF_REG_0, 1),
36 	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 5),
37 	BPF_EXIT_INSN(),
38 	},
39 	.result = ACCEPT,
40 	.retval = 0,
41 },
42 {
43 	"arsh32 on imm 2",
44 	.insns = {
45 	BPF_LD_IMM64(BPF_REG_0, 0x1122334485667788),
46 	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 7),
47 	BPF_EXIT_INSN(),
48 	},
49 	.result = ACCEPT,
50 	.retval = -16069393,
51 },
52 {
53 	"arsh32 on reg",
54 	.insns = {
55 	BPF_MOV64_IMM(BPF_REG_0, 1),
56 	BPF_MOV64_IMM(BPF_REG_1, 5),
57 	BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
58 	BPF_EXIT_INSN(),
59 	},
60 	.result = ACCEPT,
61 	.retval = 0,
62 },
63 {
64 	"arsh32 on reg 2",
65 	.insns = {
66 	BPF_LD_IMM64(BPF_REG_0, 0xffff55667788),
67 	BPF_MOV64_IMM(BPF_REG_1, 15),
68 	BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
69 	BPF_EXIT_INSN(),
70 	},
71 	.result = ACCEPT,
72 	.retval = 43724,
73 },
74 {
75 	"arsh64 on imm",
76 	.insns = {
77 	BPF_MOV64_IMM(BPF_REG_0, 1),
78 	BPF_ALU64_IMM(BPF_ARSH, BPF_REG_0, 5),
79 	BPF_EXIT_INSN(),
80 	},
81 	.result = ACCEPT,
82 },
83 {
84 	"arsh64 on reg",
85 	.insns = {
86 	BPF_MOV64_IMM(BPF_REG_0, 1),
87 	BPF_MOV64_IMM(BPF_REG_1, 5),
88 	BPF_ALU64_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
89 	BPF_EXIT_INSN(),
90 	},
91 	.result = ACCEPT,
92 },
93 {
94 	"lsh64 by 0 imm",
95 	.insns = {
96 	BPF_LD_IMM64(BPF_REG_0, 1),
97 	BPF_LD_IMM64(BPF_REG_1, 1),
98 	BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 0),
99 	BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 1),
100 	BPF_MOV64_IMM(BPF_REG_0, 2),
101 	BPF_EXIT_INSN(),
102 	},
103 	.result = ACCEPT,
104 	.retval = 1,
105 },
106 {
107 	"rsh64 by 0 imm",
108 	.insns = {
109 	BPF_LD_IMM64(BPF_REG_0, 1),
110 	BPF_LD_IMM64(BPF_REG_1, 0x100000000LL),
111 	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
112 	BPF_ALU64_IMM(BPF_RSH, BPF_REG_1, 0),
113 	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
114 	BPF_MOV64_IMM(BPF_REG_0, 2),
115 	BPF_EXIT_INSN(),
116 	},
117 	.result = ACCEPT,
118 	.retval = 1,
119 },
120 {
121 	"arsh64 by 0 imm",
122 	.insns = {
123 	BPF_LD_IMM64(BPF_REG_0, 1),
124 	BPF_LD_IMM64(BPF_REG_1, 0x100000000LL),
125 	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
126 	BPF_ALU64_IMM(BPF_ARSH, BPF_REG_1, 0),
127 	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
128 	BPF_MOV64_IMM(BPF_REG_0, 2),
129 	BPF_EXIT_INSN(),
130 	},
131 	.result = ACCEPT,
132 	.retval = 1,
133 },
134 {
135 	"lsh64 by 0 reg",
136 	.insns = {
137 	BPF_LD_IMM64(BPF_REG_0, 1),
138 	BPF_LD_IMM64(BPF_REG_1, 1),
139 	BPF_LD_IMM64(BPF_REG_2, 0),
140 	BPF_ALU64_REG(BPF_LSH, BPF_REG_1, BPF_REG_2),
141 	BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 1),
142 	BPF_MOV64_IMM(BPF_REG_0, 2),
143 	BPF_EXIT_INSN(),
144 	},
145 	.result = ACCEPT,
146 	.retval = 1,
147 },
148 {
149 	"rsh64 by 0 reg",
150 	.insns = {
151 	BPF_LD_IMM64(BPF_REG_0, 1),
152 	BPF_LD_IMM64(BPF_REG_1, 0x100000000LL),
153 	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
154 	BPF_LD_IMM64(BPF_REG_3, 0),
155 	BPF_ALU64_REG(BPF_RSH, BPF_REG_1, BPF_REG_3),
156 	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
157 	BPF_MOV64_IMM(BPF_REG_0, 2),
158 	BPF_EXIT_INSN(),
159 	},
160 	.result = ACCEPT,
161 	.retval = 1,
162 },
163 {
164 	"arsh64 by 0 reg",
165 	.insns = {
166 	BPF_LD_IMM64(BPF_REG_0, 1),
167 	BPF_LD_IMM64(BPF_REG_1, 0x100000000LL),
168 	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
169 	BPF_LD_IMM64(BPF_REG_3, 0),
170 	BPF_ALU64_REG(BPF_ARSH, BPF_REG_1, BPF_REG_3),
171 	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
172 	BPF_MOV64_IMM(BPF_REG_0, 2),
173 	BPF_EXIT_INSN(),
174 	},
175 	.result = ACCEPT,
176 	.retval = 1,
177 },
178 {
179 	"invalid 64-bit BPF_END",
180 	.insns = {
181 	BPF_MOV32_IMM(BPF_REG_0, 0),
182 	{
183 		.code  = BPF_ALU64 | BPF_END | BPF_TO_LE,
184 		.dst_reg = BPF_REG_0,
185 		.src_reg = 0,
186 		.off   = 0,
187 		.imm   = 32,
188 	},
189 	BPF_EXIT_INSN(),
190 	},
191 	.errstr = "unknown opcode d7",
192 	.result = REJECT,
193 },
194 {
195 	"mov64 src == dst",
196 	.insns = {
197 	BPF_MOV64_IMM(BPF_REG_2, 0),
198 	BPF_MOV64_REG(BPF_REG_2, BPF_REG_2),
199 	// Check bounds are OK
200 	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
201 	BPF_MOV64_IMM(BPF_REG_0, 0),
202 	BPF_EXIT_INSN(),
203 	},
204 	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
205 	.result = ACCEPT,
206 },
207 {
208 	"mov64 src != dst",
209 	.insns = {
210 	BPF_MOV64_IMM(BPF_REG_3, 0),
211 	BPF_MOV64_REG(BPF_REG_2, BPF_REG_3),
212 	// Check bounds are OK
213 	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
214 	BPF_MOV64_IMM(BPF_REG_0, 0),
215 	BPF_EXIT_INSN(),
216 	},
217 	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
218 	.result = ACCEPT,
219 },
220