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Commit | Line | Data |
---|---|---|
48729226 JK |
1 | { |
2 | "calls: basic sanity", | |
3 | .insns = { | |
4 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
5 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
6 | BPF_EXIT_INSN(), | |
7 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
8 | BPF_EXIT_INSN(), | |
9 | }, | |
10 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
11 | .result = ACCEPT, | |
12 | }, | |
13 | { | |
14 | "calls: not on unpriviledged", | |
15 | .insns = { | |
16 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
17 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
18 | BPF_EXIT_INSN(), | |
19 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
20 | BPF_EXIT_INSN(), | |
21 | }, | |
81626001 | 22 | .errstr_unpriv = "function calls to other bpf functions are allowed for", |
48729226 JK |
23 | .result_unpriv = REJECT, |
24 | .result = ACCEPT, | |
25 | .retval = 1, | |
26 | }, | |
27 | { | |
28 | "calls: div by 0 in subprog", | |
29 | .insns = { | |
30 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
31 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 8), | |
32 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
33 | BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, | |
34 | offsetof(struct __sk_buff, data_end)), | |
35 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0), | |
36 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8), | |
37 | BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1), | |
38 | BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0), | |
39 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
40 | BPF_EXIT_INSN(), | |
41 | BPF_MOV32_IMM(BPF_REG_2, 0), | |
42 | BPF_MOV32_IMM(BPF_REG_3, 1), | |
43 | BPF_ALU32_REG(BPF_DIV, BPF_REG_3, BPF_REG_2), | |
44 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
45 | offsetof(struct __sk_buff, data)), | |
46 | BPF_EXIT_INSN(), | |
47 | }, | |
48 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
49 | .result = ACCEPT, | |
50 | .retval = 1, | |
51 | }, | |
52 | { | |
53 | "calls: multiple ret types in subprog 1", | |
54 | .insns = { | |
55 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
56 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 8), | |
57 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
58 | BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, | |
59 | offsetof(struct __sk_buff, data_end)), | |
60 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0), | |
61 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8), | |
62 | BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1), | |
63 | BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0), | |
64 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
65 | BPF_EXIT_INSN(), | |
66 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
67 | offsetof(struct __sk_buff, data)), | |
68 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), | |
69 | BPF_MOV32_IMM(BPF_REG_0, 42), | |
70 | BPF_EXIT_INSN(), | |
71 | }, | |
72 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
73 | .result = REJECT, | |
74 | .errstr = "R0 invalid mem access 'inv'", | |
75 | }, | |
76 | { | |
77 | "calls: multiple ret types in subprog 2", | |
78 | .insns = { | |
79 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
80 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 8), | |
81 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
82 | BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, | |
83 | offsetof(struct __sk_buff, data_end)), | |
84 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_0), | |
85 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8), | |
86 | BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1), | |
87 | BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0), | |
88 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
89 | BPF_EXIT_INSN(), | |
90 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
91 | offsetof(struct __sk_buff, data)), | |
92 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
93 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 9), | |
94 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
95 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
96 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
97 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
98 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
99 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), | |
100 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, | |
101 | offsetof(struct __sk_buff, data)), | |
102 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 64), | |
103 | BPF_EXIT_INSN(), | |
104 | }, | |
105 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
106 | .fixup_map_hash_8b = { 16 }, | |
107 | .result = REJECT, | |
457f4436 | 108 | .errstr = "R0 min value is outside of the allowed memory range", |
48729226 JK |
109 | }, |
110 | { | |
111 | "calls: overlapping caller/callee", | |
112 | .insns = { | |
113 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 0), | |
114 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
115 | BPF_EXIT_INSN(), | |
116 | }, | |
117 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
118 | .errstr = "last insn is not an exit or jmp", | |
119 | .result = REJECT, | |
120 | }, | |
121 | { | |
122 | "calls: wrong recursive calls", | |
123 | .insns = { | |
124 | BPF_JMP_IMM(BPF_JA, 0, 0, 4), | |
125 | BPF_JMP_IMM(BPF_JA, 0, 0, 4), | |
126 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -2), | |
127 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -2), | |
128 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -2), | |
129 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
130 | BPF_EXIT_INSN(), | |
131 | }, | |
132 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
133 | .errstr = "jump out of range", | |
134 | .result = REJECT, | |
135 | }, | |
136 | { | |
137 | "calls: wrong src reg", | |
138 | .insns = { | |
139 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 2, 0, 0), | |
140 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
141 | BPF_EXIT_INSN(), | |
142 | }, | |
143 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
144 | .errstr = "BPF_CALL uses reserved fields", | |
145 | .result = REJECT, | |
146 | }, | |
147 | { | |
148 | "calls: wrong off value", | |
149 | .insns = { | |
150 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, -1, 2), | |
151 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
152 | BPF_EXIT_INSN(), | |
153 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
154 | BPF_EXIT_INSN(), | |
155 | }, | |
156 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
157 | .errstr = "BPF_CALL uses reserved fields", | |
158 | .result = REJECT, | |
159 | }, | |
160 | { | |
161 | "calls: jump back loop", | |
162 | .insns = { | |
163 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -1), | |
164 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
165 | BPF_EXIT_INSN(), | |
166 | }, | |
167 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
168 | .errstr = "back-edge from insn 0 to 0", | |
169 | .result = REJECT, | |
170 | }, | |
171 | { | |
172 | "calls: conditional call", | |
173 | .insns = { | |
174 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
175 | offsetof(struct __sk_buff, mark)), | |
176 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), | |
177 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
178 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
179 | BPF_EXIT_INSN(), | |
180 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
181 | BPF_EXIT_INSN(), | |
182 | }, | |
183 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
184 | .errstr = "jump out of range", | |
185 | .result = REJECT, | |
186 | }, | |
187 | { | |
188 | "calls: conditional call 2", | |
189 | .insns = { | |
190 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
191 | offsetof(struct __sk_buff, mark)), | |
192 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), | |
193 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
194 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
195 | BPF_EXIT_INSN(), | |
196 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
197 | BPF_EXIT_INSN(), | |
198 | BPF_MOV64_IMM(BPF_REG_0, 3), | |
199 | BPF_EXIT_INSN(), | |
200 | }, | |
201 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
202 | .result = ACCEPT, | |
203 | }, | |
204 | { | |
205 | "calls: conditional call 3", | |
206 | .insns = { | |
207 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
208 | offsetof(struct __sk_buff, mark)), | |
209 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), | |
210 | BPF_JMP_IMM(BPF_JA, 0, 0, 4), | |
211 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
212 | BPF_EXIT_INSN(), | |
213 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
214 | BPF_JMP_IMM(BPF_JA, 0, 0, -6), | |
215 | BPF_MOV64_IMM(BPF_REG_0, 3), | |
216 | BPF_JMP_IMM(BPF_JA, 0, 0, -6), | |
217 | }, | |
aeee380c AS |
218 | .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, |
219 | .errstr_unpriv = "back-edge from insn", | |
220 | .result_unpriv = REJECT, | |
221 | .result = ACCEPT, | |
222 | .retval = 1, | |
48729226 JK |
223 | }, |
224 | { | |
225 | "calls: conditional call 4", | |
226 | .insns = { | |
227 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
228 | offsetof(struct __sk_buff, mark)), | |
229 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), | |
230 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
231 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
232 | BPF_EXIT_INSN(), | |
233 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
234 | BPF_JMP_IMM(BPF_JA, 0, 0, -5), | |
235 | BPF_MOV64_IMM(BPF_REG_0, 3), | |
236 | BPF_EXIT_INSN(), | |
237 | }, | |
238 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
239 | .result = ACCEPT, | |
240 | }, | |
241 | { | |
242 | "calls: conditional call 5", | |
243 | .insns = { | |
244 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
245 | offsetof(struct __sk_buff, mark)), | |
246 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), | |
247 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
248 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
249 | BPF_EXIT_INSN(), | |
250 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
251 | BPF_JMP_IMM(BPF_JA, 0, 0, -6), | |
252 | BPF_MOV64_IMM(BPF_REG_0, 3), | |
253 | BPF_EXIT_INSN(), | |
254 | }, | |
aeee380c AS |
255 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
256 | .result = ACCEPT, | |
257 | .retval = 1, | |
48729226 JK |
258 | }, |
259 | { | |
260 | "calls: conditional call 6", | |
261 | .insns = { | |
aeee380c AS |
262 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), |
263 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
48729226 | 264 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), |
aeee380c | 265 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, -3), |
48729226 JK |
266 | BPF_EXIT_INSN(), |
267 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
268 | offsetof(struct __sk_buff, mark)), | |
269 | BPF_EXIT_INSN(), | |
270 | }, | |
aeee380c AS |
271 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
272 | .errstr = "infinite loop detected", | |
48729226 JK |
273 | .result = REJECT, |
274 | }, | |
275 | { | |
276 | "calls: using r0 returned by callee", | |
277 | .insns = { | |
278 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
279 | BPF_EXIT_INSN(), | |
280 | BPF_MOV64_IMM(BPF_REG_0, 2), | |
281 | BPF_EXIT_INSN(), | |
282 | }, | |
283 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
284 | .result = ACCEPT, | |
285 | }, | |
286 | { | |
287 | "calls: using uninit r0 from callee", | |
288 | .insns = { | |
289 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
290 | BPF_EXIT_INSN(), | |
291 | BPF_EXIT_INSN(), | |
292 | }, | |
293 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
294 | .errstr = "!read_ok", | |
295 | .result = REJECT, | |
296 | }, | |
297 | { | |
298 | "calls: callee is using r1", | |
299 | .insns = { | |
300 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
301 | BPF_EXIT_INSN(), | |
302 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
303 | offsetof(struct __sk_buff, len)), | |
304 | BPF_EXIT_INSN(), | |
305 | }, | |
306 | .prog_type = BPF_PROG_TYPE_SCHED_ACT, | |
307 | .result = ACCEPT, | |
308 | .retval = TEST_DATA_LEN, | |
309 | }, | |
310 | { | |
311 | "calls: callee using args1", | |
312 | .insns = { | |
313 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
314 | BPF_EXIT_INSN(), | |
315 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), | |
316 | BPF_EXIT_INSN(), | |
317 | }, | |
81626001 | 318 | .errstr_unpriv = "allowed for", |
48729226 JK |
319 | .result_unpriv = REJECT, |
320 | .result = ACCEPT, | |
321 | .retval = POINTER_VALUE, | |
322 | }, | |
323 | { | |
324 | "calls: callee using wrong args2", | |
325 | .insns = { | |
326 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
327 | BPF_EXIT_INSN(), | |
328 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
329 | BPF_EXIT_INSN(), | |
330 | }, | |
331 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
332 | .errstr = "R2 !read_ok", | |
333 | .result = REJECT, | |
334 | }, | |
335 | { | |
336 | "calls: callee using two args", | |
337 | .insns = { | |
338 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
339 | BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_6, | |
340 | offsetof(struct __sk_buff, len)), | |
341 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_6, | |
342 | offsetof(struct __sk_buff, len)), | |
343 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
344 | BPF_EXIT_INSN(), | |
345 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), | |
346 | BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2), | |
347 | BPF_EXIT_INSN(), | |
348 | }, | |
81626001 | 349 | .errstr_unpriv = "allowed for", |
48729226 JK |
350 | .result_unpriv = REJECT, |
351 | .result = ACCEPT, | |
352 | .retval = TEST_DATA_LEN + TEST_DATA_LEN - ETH_HLEN - ETH_HLEN, | |
353 | }, | |
354 | { | |
355 | "calls: callee changing pkt pointers", | |
356 | .insns = { | |
357 | BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1, offsetof(struct xdp_md, data)), | |
358 | BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1, | |
359 | offsetof(struct xdp_md, data_end)), | |
360 | BPF_MOV64_REG(BPF_REG_8, BPF_REG_6), | |
361 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_8, 8), | |
362 | BPF_JMP_REG(BPF_JGT, BPF_REG_8, BPF_REG_7, 2), | |
363 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
364 | /* clear_all_pkt_pointers() has to walk all frames | |
365 | * to make sure that pkt pointers in the caller | |
366 | * are cleared when callee is calling a helper that | |
367 | * adjusts packet size | |
368 | */ | |
369 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), | |
370 | BPF_MOV32_IMM(BPF_REG_0, 0), | |
371 | BPF_EXIT_INSN(), | |
372 | BPF_MOV64_IMM(BPF_REG_2, 0), | |
373 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_xdp_adjust_head), | |
374 | BPF_EXIT_INSN(), | |
375 | }, | |
376 | .result = REJECT, | |
377 | .errstr = "R6 invalid mem access 'inv'", | |
378 | .prog_type = BPF_PROG_TYPE_XDP, | |
379 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
380 | }, | |
6dd7f140 PC |
381 | { |
382 | "calls: ptr null check in subprog", | |
383 | .insns = { | |
384 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
385 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
386 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
387 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
388 | BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), | |
389 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), | |
390 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), | |
391 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
392 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), | |
393 | BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_6, 0), | |
394 | BPF_EXIT_INSN(), | |
395 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
396 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), | |
397 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
398 | BPF_EXIT_INSN(), | |
399 | }, | |
81626001 | 400 | .errstr_unpriv = "function calls to other bpf functions are allowed for", |
6dd7f140 PC |
401 | .fixup_map_hash_48b = { 3 }, |
402 | .result_unpriv = REJECT, | |
403 | .result = ACCEPT, | |
404 | .retval = 0, | |
405 | }, | |
48729226 JK |
406 | { |
407 | "calls: two calls with args", | |
408 | .insns = { | |
409 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
410 | BPF_EXIT_INSN(), | |
411 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
412 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 6), | |
413 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), | |
414 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
415 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
416 | BPF_ALU64_REG(BPF_ADD, BPF_REG_7, BPF_REG_0), | |
417 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), | |
418 | BPF_EXIT_INSN(), | |
419 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
420 | offsetof(struct __sk_buff, len)), | |
421 | BPF_EXIT_INSN(), | |
422 | }, | |
423 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
424 | .result = ACCEPT, | |
425 | .retval = TEST_DATA_LEN + TEST_DATA_LEN, | |
426 | }, | |
427 | { | |
428 | "calls: calls with stack arith", | |
429 | .insns = { | |
430 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
431 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -64), | |
432 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
433 | BPF_EXIT_INSN(), | |
434 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -64), | |
435 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
436 | BPF_EXIT_INSN(), | |
437 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -64), | |
438 | BPF_MOV64_IMM(BPF_REG_0, 42), | |
439 | BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0), | |
440 | BPF_EXIT_INSN(), | |
441 | }, | |
442 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
443 | .result = ACCEPT, | |
444 | .retval = 42, | |
445 | }, | |
446 | { | |
447 | "calls: calls with misaligned stack access", | |
448 | .insns = { | |
449 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
450 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -63), | |
451 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
452 | BPF_EXIT_INSN(), | |
453 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -61), | |
454 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
455 | BPF_EXIT_INSN(), | |
456 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -63), | |
457 | BPF_MOV64_IMM(BPF_REG_0, 42), | |
458 | BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0), | |
459 | BPF_EXIT_INSN(), | |
460 | }, | |
461 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
462 | .flags = F_LOAD_WITH_STRICT_ALIGNMENT, | |
463 | .errstr = "misaligned stack access", | |
464 | .result = REJECT, | |
465 | }, | |
466 | { | |
467 | "calls: calls control flow, jump test", | |
468 | .insns = { | |
469 | BPF_MOV64_IMM(BPF_REG_0, 42), | |
470 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
471 | BPF_MOV64_IMM(BPF_REG_0, 43), | |
472 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
473 | BPF_JMP_IMM(BPF_JA, 0, 0, -3), | |
474 | BPF_EXIT_INSN(), | |
475 | }, | |
476 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
477 | .result = ACCEPT, | |
478 | .retval = 43, | |
479 | }, | |
480 | { | |
481 | "calls: calls control flow, jump test 2", | |
482 | .insns = { | |
483 | BPF_MOV64_IMM(BPF_REG_0, 42), | |
484 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
485 | BPF_MOV64_IMM(BPF_REG_0, 43), | |
486 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
487 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -3), | |
488 | BPF_EXIT_INSN(), | |
489 | }, | |
490 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
491 | .errstr = "jump out of range from insn 1 to 4", | |
492 | .result = REJECT, | |
493 | }, | |
494 | { | |
495 | "calls: two calls with bad jump", | |
496 | .insns = { | |
497 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
498 | BPF_EXIT_INSN(), | |
499 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
500 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 6), | |
501 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), | |
502 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
503 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
504 | BPF_ALU64_REG(BPF_ADD, BPF_REG_7, BPF_REG_0), | |
505 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), | |
506 | BPF_EXIT_INSN(), | |
507 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
508 | offsetof(struct __sk_buff, len)), | |
509 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, -3), | |
510 | BPF_EXIT_INSN(), | |
511 | }, | |
512 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
513 | .errstr = "jump out of range from insn 11 to 9", | |
514 | .result = REJECT, | |
515 | }, | |
516 | { | |
517 | "calls: recursive call. test1", | |
518 | .insns = { | |
519 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
520 | BPF_EXIT_INSN(), | |
521 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -1), | |
522 | BPF_EXIT_INSN(), | |
523 | }, | |
524 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
525 | .errstr = "back-edge", | |
526 | .result = REJECT, | |
527 | }, | |
528 | { | |
529 | "calls: recursive call. test2", | |
530 | .insns = { | |
531 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
532 | BPF_EXIT_INSN(), | |
533 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -3), | |
534 | BPF_EXIT_INSN(), | |
535 | }, | |
536 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
537 | .errstr = "back-edge", | |
538 | .result = REJECT, | |
539 | }, | |
540 | { | |
541 | "calls: unreachable code", | |
542 | .insns = { | |
543 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
544 | BPF_EXIT_INSN(), | |
545 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
546 | BPF_EXIT_INSN(), | |
547 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
548 | BPF_EXIT_INSN(), | |
549 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
550 | BPF_EXIT_INSN(), | |
551 | }, | |
552 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
553 | .errstr = "unreachable insn 6", | |
554 | .result = REJECT, | |
555 | }, | |
556 | { | |
557 | "calls: invalid call", | |
558 | .insns = { | |
559 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
560 | BPF_EXIT_INSN(), | |
561 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -4), | |
562 | BPF_EXIT_INSN(), | |
563 | }, | |
564 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
565 | .errstr = "invalid destination", | |
566 | .result = REJECT, | |
567 | }, | |
568 | { | |
569 | "calls: invalid call 2", | |
570 | .insns = { | |
571 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
572 | BPF_EXIT_INSN(), | |
573 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 0x7fffffff), | |
574 | BPF_EXIT_INSN(), | |
575 | }, | |
576 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
577 | .errstr = "invalid destination", | |
578 | .result = REJECT, | |
579 | }, | |
580 | { | |
581 | "calls: jumping across function bodies. test1", | |
582 | .insns = { | |
583 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
584 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
585 | BPF_EXIT_INSN(), | |
586 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, -3), | |
587 | BPF_EXIT_INSN(), | |
588 | }, | |
589 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
590 | .errstr = "jump out of range", | |
591 | .result = REJECT, | |
592 | }, | |
593 | { | |
594 | "calls: jumping across function bodies. test2", | |
595 | .insns = { | |
596 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3), | |
597 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
598 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
599 | BPF_EXIT_INSN(), | |
600 | BPF_EXIT_INSN(), | |
601 | }, | |
602 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
603 | .errstr = "jump out of range", | |
604 | .result = REJECT, | |
605 | }, | |
606 | { | |
607 | "calls: call without exit", | |
608 | .insns = { | |
609 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
610 | BPF_EXIT_INSN(), | |
611 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
612 | BPF_EXIT_INSN(), | |
613 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
614 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, -2), | |
615 | }, | |
616 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
617 | .errstr = "not an exit", | |
618 | .result = REJECT, | |
619 | }, | |
620 | { | |
621 | "calls: call into middle of ld_imm64", | |
622 | .insns = { | |
623 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
624 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
625 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
626 | BPF_EXIT_INSN(), | |
627 | BPF_LD_IMM64(BPF_REG_0, 0), | |
628 | BPF_EXIT_INSN(), | |
629 | }, | |
630 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
631 | .errstr = "last insn", | |
632 | .result = REJECT, | |
633 | }, | |
634 | { | |
635 | "calls: call into middle of other call", | |
636 | .insns = { | |
637 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
638 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
639 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
640 | BPF_EXIT_INSN(), | |
641 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
642 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
643 | BPF_EXIT_INSN(), | |
644 | }, | |
645 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
646 | .errstr = "last insn", | |
647 | .result = REJECT, | |
648 | }, | |
649 | { | |
650 | "calls: ld_abs with changing ctx data in callee", | |
651 | .insns = { | |
652 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
653 | BPF_LD_ABS(BPF_B, 0), | |
654 | BPF_LD_ABS(BPF_H, 0), | |
655 | BPF_LD_ABS(BPF_W, 0), | |
656 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_6), | |
657 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 5), | |
658 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_7), | |
659 | BPF_LD_ABS(BPF_B, 0), | |
660 | BPF_LD_ABS(BPF_H, 0), | |
661 | BPF_LD_ABS(BPF_W, 0), | |
662 | BPF_EXIT_INSN(), | |
663 | BPF_MOV64_IMM(BPF_REG_2, 1), | |
664 | BPF_MOV64_IMM(BPF_REG_3, 2), | |
665 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_vlan_push), | |
666 | BPF_EXIT_INSN(), | |
667 | }, | |
668 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
669 | .errstr = "BPF_LD_[ABS|IND] instructions cannot be mixed", | |
670 | .result = REJECT, | |
671 | }, | |
672 | { | |
673 | "calls: two calls with bad fallthrough", | |
674 | .insns = { | |
675 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
676 | BPF_EXIT_INSN(), | |
677 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
678 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 6), | |
679 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), | |
680 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
681 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
682 | BPF_ALU64_REG(BPF_ADD, BPF_REG_7, BPF_REG_0), | |
683 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), | |
684 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_0), | |
685 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, | |
686 | offsetof(struct __sk_buff, len)), | |
687 | BPF_EXIT_INSN(), | |
688 | }, | |
689 | .prog_type = BPF_PROG_TYPE_TRACEPOINT, | |
690 | .errstr = "not an exit", | |
691 | .result = REJECT, | |
692 | }, | |
693 | { | |
694 | "calls: two calls with stack read", | |
695 | .insns = { | |
696 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
697 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
698 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
699 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
700 | BPF_EXIT_INSN(), | |
701 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
702 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 6), | |
703 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), | |
704 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
705 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
706 | BPF_ALU64_REG(BPF_ADD, BPF_REG_7, BPF_REG_0), | |
707 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), | |
708 | BPF_EXIT_INSN(), | |
709 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0), | |
710 | BPF_EXIT_INSN(), | |
711 | }, | |
712 | .prog_type = BPF_PROG_TYPE_XDP, | |
713 | .result = ACCEPT, | |
714 | }, | |
715 | { | |
716 | "calls: two calls with stack write", | |
717 | .insns = { | |
718 | /* main prog */ | |
719 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
720 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
721 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
722 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
723 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
724 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
725 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -16), | |
726 | BPF_EXIT_INSN(), | |
727 | ||
728 | /* subprog 1 */ | |
729 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
730 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
731 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 7), | |
732 | BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), | |
733 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
734 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
735 | BPF_ALU64_REG(BPF_ADD, BPF_REG_8, BPF_REG_0), | |
736 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_8), | |
737 | /* write into stack frame of main prog */ | |
738 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
739 | BPF_EXIT_INSN(), | |
740 | ||
741 | /* subprog 2 */ | |
742 | /* read from stack frame of main prog */ | |
743 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0), | |
744 | BPF_EXIT_INSN(), | |
745 | }, | |
746 | .prog_type = BPF_PROG_TYPE_XDP, | |
747 | .result = ACCEPT, | |
748 | }, | |
749 | { | |
750 | "calls: stack overflow using two frames (pre-call access)", | |
751 | .insns = { | |
752 | /* prog 1 */ | |
753 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
754 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), | |
755 | BPF_EXIT_INSN(), | |
756 | ||
757 | /* prog 2 */ | |
758 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
759 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
760 | BPF_EXIT_INSN(), | |
761 | }, | |
762 | .prog_type = BPF_PROG_TYPE_XDP, | |
763 | .errstr = "combined stack size", | |
764 | .result = REJECT, | |
765 | }, | |
766 | { | |
767 | "calls: stack overflow using two frames (post-call access)", | |
768 | .insns = { | |
769 | /* prog 1 */ | |
770 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 2), | |
771 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
772 | BPF_EXIT_INSN(), | |
773 | ||
774 | /* prog 2 */ | |
775 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
776 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
777 | BPF_EXIT_INSN(), | |
778 | }, | |
779 | .prog_type = BPF_PROG_TYPE_XDP, | |
780 | .errstr = "combined stack size", | |
781 | .result = REJECT, | |
782 | }, | |
783 | { | |
784 | "calls: stack depth check using three frames. test1", | |
785 | .insns = { | |
786 | /* main */ | |
787 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 4), /* call A */ | |
788 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 5), /* call B */ | |
789 | BPF_ST_MEM(BPF_B, BPF_REG_10, -32, 0), | |
790 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
791 | BPF_EXIT_INSN(), | |
792 | /* A */ | |
793 | BPF_ST_MEM(BPF_B, BPF_REG_10, -256, 0), | |
794 | BPF_EXIT_INSN(), | |
795 | /* B */ | |
796 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, -3), /* call A */ | |
797 | BPF_ST_MEM(BPF_B, BPF_REG_10, -64, 0), | |
798 | BPF_EXIT_INSN(), | |
799 | }, | |
800 | .prog_type = BPF_PROG_TYPE_XDP, | |
801 | /* stack_main=32, stack_A=256, stack_B=64 | |
802 | * and max(main+A, main+A+B) < 512 | |
803 | */ | |
804 | .result = ACCEPT, | |
805 | }, | |
806 | { | |
807 | "calls: stack depth check using three frames. test2", | |
808 | .insns = { | |
809 | /* main */ | |
810 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 4), /* call A */ | |
811 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 5), /* call B */ | |
812 | BPF_ST_MEM(BPF_B, BPF_REG_10, -32, 0), | |
813 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
814 | BPF_EXIT_INSN(), | |
815 | /* A */ | |
816 | BPF_ST_MEM(BPF_B, BPF_REG_10, -64, 0), | |
817 | BPF_EXIT_INSN(), | |
818 | /* B */ | |
819 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, -3), /* call A */ | |
820 | BPF_ST_MEM(BPF_B, BPF_REG_10, -256, 0), | |
821 | BPF_EXIT_INSN(), | |
822 | }, | |
823 | .prog_type = BPF_PROG_TYPE_XDP, | |
824 | /* stack_main=32, stack_A=64, stack_B=256 | |
825 | * and max(main+A, main+A+B) < 512 | |
826 | */ | |
827 | .result = ACCEPT, | |
828 | }, | |
829 | { | |
830 | "calls: stack depth check using three frames. test3", | |
831 | .insns = { | |
832 | /* main */ | |
833 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
834 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 6), /* call A */ | |
835 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
836 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 8), /* call B */ | |
837 | BPF_JMP_IMM(BPF_JGE, BPF_REG_6, 0, 1), | |
838 | BPF_ST_MEM(BPF_B, BPF_REG_10, -64, 0), | |
839 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
840 | BPF_EXIT_INSN(), | |
841 | /* A */ | |
842 | BPF_JMP_IMM(BPF_JLT, BPF_REG_1, 10, 1), | |
843 | BPF_EXIT_INSN(), | |
844 | BPF_ST_MEM(BPF_B, BPF_REG_10, -224, 0), | |
845 | BPF_JMP_IMM(BPF_JA, 0, 0, -3), | |
846 | /* B */ | |
847 | BPF_JMP_IMM(BPF_JGT, BPF_REG_1, 2, 1), | |
848 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, -6), /* call A */ | |
849 | BPF_ST_MEM(BPF_B, BPF_REG_10, -256, 0), | |
850 | BPF_EXIT_INSN(), | |
851 | }, | |
852 | .prog_type = BPF_PROG_TYPE_XDP, | |
853 | /* stack_main=64, stack_A=224, stack_B=256 | |
854 | * and max(main+A, main+A+B) > 512 | |
855 | */ | |
856 | .errstr = "combined stack", | |
857 | .result = REJECT, | |
858 | }, | |
859 | { | |
860 | "calls: stack depth check using three frames. test4", | |
861 | /* void main(void) { | |
862 | * func1(0); | |
863 | * func1(1); | |
864 | * func2(1); | |
865 | * } | |
866 | * void func1(int alloc_or_recurse) { | |
867 | * if (alloc_or_recurse) { | |
868 | * frame_pointer[-300] = 1; | |
869 | * } else { | |
870 | * func2(alloc_or_recurse); | |
871 | * } | |
872 | * } | |
873 | * void func2(int alloc_or_recurse) { | |
874 | * if (alloc_or_recurse) { | |
875 | * frame_pointer[-300] = 1; | |
876 | * } | |
877 | * } | |
878 | */ | |
879 | .insns = { | |
880 | /* main */ | |
881 | BPF_MOV64_IMM(BPF_REG_1, 0), | |
882 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 6), /* call A */ | |
883 | BPF_MOV64_IMM(BPF_REG_1, 1), | |
884 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 4), /* call A */ | |
885 | BPF_MOV64_IMM(BPF_REG_1, 1), | |
886 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 7), /* call B */ | |
887 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
888 | BPF_EXIT_INSN(), | |
889 | /* A */ | |
890 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 2), | |
891 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
892 | BPF_EXIT_INSN(), | |
893 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call B */ | |
894 | BPF_EXIT_INSN(), | |
895 | /* B */ | |
896 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), | |
897 | BPF_ST_MEM(BPF_B, BPF_REG_10, -300, 0), | |
898 | BPF_EXIT_INSN(), | |
899 | }, | |
900 | .prog_type = BPF_PROG_TYPE_XDP, | |
901 | .result = REJECT, | |
902 | .errstr = "combined stack", | |
903 | }, | |
904 | { | |
905 | "calls: stack depth check using three frames. test5", | |
906 | .insns = { | |
907 | /* main */ | |
908 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call A */ | |
909 | BPF_EXIT_INSN(), | |
910 | /* A */ | |
911 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call B */ | |
912 | BPF_EXIT_INSN(), | |
913 | /* B */ | |
914 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call C */ | |
915 | BPF_EXIT_INSN(), | |
916 | /* C */ | |
917 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call D */ | |
918 | BPF_EXIT_INSN(), | |
919 | /* D */ | |
920 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call E */ | |
921 | BPF_EXIT_INSN(), | |
922 | /* E */ | |
923 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call F */ | |
924 | BPF_EXIT_INSN(), | |
925 | /* F */ | |
926 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call G */ | |
927 | BPF_EXIT_INSN(), | |
928 | /* G */ | |
929 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call H */ | |
930 | BPF_EXIT_INSN(), | |
931 | /* H */ | |
932 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
933 | BPF_EXIT_INSN(), | |
934 | }, | |
935 | .prog_type = BPF_PROG_TYPE_XDP, | |
936 | .errstr = "call stack", | |
937 | .result = REJECT, | |
938 | }, | |
cabacfbb PC |
939 | { |
940 | "calls: stack depth check in dead code", | |
941 | .insns = { | |
942 | /* main */ | |
943 | BPF_MOV64_IMM(BPF_REG_1, 0), | |
944 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call A */ | |
945 | BPF_EXIT_INSN(), | |
946 | /* A */ | |
947 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), | |
948 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 2), /* call B */ | |
949 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
950 | BPF_EXIT_INSN(), | |
951 | /* B */ | |
952 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call C */ | |
953 | BPF_EXIT_INSN(), | |
954 | /* C */ | |
955 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call D */ | |
956 | BPF_EXIT_INSN(), | |
957 | /* D */ | |
958 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call E */ | |
959 | BPF_EXIT_INSN(), | |
960 | /* E */ | |
961 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call F */ | |
962 | BPF_EXIT_INSN(), | |
963 | /* F */ | |
964 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call G */ | |
965 | BPF_EXIT_INSN(), | |
966 | /* G */ | |
967 | BPF_RAW_INSN(BPF_JMP|BPF_CALL, 0, 1, 0, 1), /* call H */ | |
968 | BPF_EXIT_INSN(), | |
969 | /* H */ | |
970 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
971 | BPF_EXIT_INSN(), | |
972 | }, | |
973 | .prog_type = BPF_PROG_TYPE_XDP, | |
974 | .errstr = "call stack", | |
975 | .result = REJECT, | |
976 | }, | |
48729226 JK |
977 | { |
978 | "calls: spill into caller stack frame", | |
979 | .insns = { | |
980 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
981 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
982 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
983 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
984 | BPF_EXIT_INSN(), | |
985 | BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, 0), | |
986 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
987 | BPF_EXIT_INSN(), | |
988 | }, | |
989 | .prog_type = BPF_PROG_TYPE_XDP, | |
990 | .errstr = "cannot spill", | |
991 | .result = REJECT, | |
992 | }, | |
993 | { | |
994 | "calls: write into caller stack frame", | |
995 | .insns = { | |
996 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
997 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
998 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
999 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1000 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), | |
1001 | BPF_EXIT_INSN(), | |
1002 | BPF_ST_MEM(BPF_DW, BPF_REG_1, 0, 42), | |
1003 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1004 | BPF_EXIT_INSN(), | |
1005 | }, | |
1006 | .prog_type = BPF_PROG_TYPE_XDP, | |
1007 | .result = ACCEPT, | |
1008 | .retval = 42, | |
1009 | }, | |
1010 | { | |
1011 | "calls: write into callee stack frame", | |
1012 | .insns = { | |
1013 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1014 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42), | |
1015 | BPF_EXIT_INSN(), | |
1016 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_10), | |
1017 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, -8), | |
1018 | BPF_EXIT_INSN(), | |
1019 | }, | |
1020 | .prog_type = BPF_PROG_TYPE_XDP, | |
1021 | .errstr = "cannot return stack pointer", | |
1022 | .result = REJECT, | |
1023 | }, | |
1024 | { | |
1025 | "calls: two calls with stack write and void return", | |
1026 | .insns = { | |
1027 | /* main prog */ | |
1028 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1029 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1030 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1031 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1032 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1033 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1034 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -16), | |
1035 | BPF_EXIT_INSN(), | |
1036 | ||
1037 | /* subprog 1 */ | |
1038 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1039 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1040 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1041 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), | |
1042 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
1043 | BPF_EXIT_INSN(), | |
1044 | ||
1045 | /* subprog 2 */ | |
1046 | /* write into stack frame of main prog */ | |
1047 | BPF_ST_MEM(BPF_DW, BPF_REG_1, 0, 0), | |
1048 | BPF_EXIT_INSN(), /* void return */ | |
1049 | }, | |
1050 | .prog_type = BPF_PROG_TYPE_XDP, | |
1051 | .result = ACCEPT, | |
1052 | }, | |
1053 | { | |
1054 | "calls: ambiguous return value", | |
1055 | .insns = { | |
1056 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1057 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 5), | |
1058 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), | |
1059 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
1060 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1061 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), | |
1062 | BPF_EXIT_INSN(), | |
1063 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), | |
1064 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1065 | BPF_EXIT_INSN(), | |
1066 | }, | |
81626001 | 1067 | .errstr_unpriv = "allowed for", |
48729226 JK |
1068 | .result_unpriv = REJECT, |
1069 | .errstr = "R0 !read_ok", | |
1070 | .result = REJECT, | |
1071 | }, | |
1072 | { | |
1073 | "calls: two calls that return map_value", | |
1074 | .insns = { | |
1075 | /* main prog */ | |
1076 | /* pass fp-16, fp-8 into a function */ | |
1077 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1078 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1079 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1080 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1081 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 8), | |
1082 | ||
1083 | /* fetch map_value_ptr from the stack of this function */ | |
1084 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8), | |
1085 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), | |
1086 | /* write into map value */ | |
1087 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1088 | /* fetch secound map_value_ptr from the stack */ | |
1089 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -16), | |
1090 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), | |
1091 | /* write into map value */ | |
1092 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1093 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1094 | BPF_EXIT_INSN(), | |
1095 | ||
1096 | /* subprog 1 */ | |
1097 | /* call 3rd function twice */ | |
1098 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1099 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1100 | /* first time with fp-8 */ | |
1101 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1102 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), | |
1103 | /* second time with fp-16 */ | |
1104 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
1105 | BPF_EXIT_INSN(), | |
1106 | ||
1107 | /* subprog 2 */ | |
1108 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1109 | /* lookup from map */ | |
1110 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1111 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1112 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1113 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1114 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1115 | /* write map_value_ptr into stack frame of main prog */ | |
1116 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1117 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1118 | BPF_EXIT_INSN(), /* return 0 */ | |
1119 | }, | |
1120 | .prog_type = BPF_PROG_TYPE_XDP, | |
1121 | .fixup_map_hash_8b = { 23 }, | |
1122 | .result = ACCEPT, | |
1123 | }, | |
1124 | { | |
1125 | "calls: two calls that return map_value with bool condition", | |
1126 | .insns = { | |
1127 | /* main prog */ | |
1128 | /* pass fp-16, fp-8 into a function */ | |
1129 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1130 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1131 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1132 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1133 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1134 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1135 | BPF_EXIT_INSN(), | |
1136 | ||
1137 | /* subprog 1 */ | |
1138 | /* call 3rd function twice */ | |
1139 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1140 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1141 | /* first time with fp-8 */ | |
1142 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 9), | |
1143 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2), | |
1144 | /* fetch map_value_ptr from the stack of this function */ | |
1145 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), | |
1146 | /* write into map value */ | |
1147 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1148 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), | |
1149 | /* second time with fp-16 */ | |
1150 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1151 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2), | |
1152 | /* fetch secound map_value_ptr from the stack */ | |
1153 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_7, 0), | |
1154 | /* write into map value */ | |
1155 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1156 | BPF_EXIT_INSN(), | |
1157 | ||
1158 | /* subprog 2 */ | |
1159 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1160 | /* lookup from map */ | |
1161 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1162 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1163 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1164 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1165 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1166 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1167 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1168 | BPF_EXIT_INSN(), /* return 0 */ | |
1169 | /* write map_value_ptr into stack frame of main prog */ | |
1170 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1171 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
1172 | BPF_EXIT_INSN(), /* return 1 */ | |
1173 | }, | |
1174 | .prog_type = BPF_PROG_TYPE_XDP, | |
1175 | .fixup_map_hash_8b = { 23 }, | |
1176 | .result = ACCEPT, | |
1177 | }, | |
1178 | { | |
1179 | "calls: two calls that return map_value with incorrect bool check", | |
1180 | .insns = { | |
1181 | /* main prog */ | |
1182 | /* pass fp-16, fp-8 into a function */ | |
1183 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1184 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1185 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1186 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1187 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1188 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1189 | BPF_EXIT_INSN(), | |
1190 | ||
1191 | /* subprog 1 */ | |
1192 | /* call 3rd function twice */ | |
1193 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1194 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1195 | /* first time with fp-8 */ | |
1196 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 9), | |
1197 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2), | |
1198 | /* fetch map_value_ptr from the stack of this function */ | |
1199 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), | |
1200 | /* write into map value */ | |
1201 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1202 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), | |
1203 | /* second time with fp-16 */ | |
1204 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1205 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1206 | /* fetch secound map_value_ptr from the stack */ | |
1207 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_7, 0), | |
1208 | /* write into map value */ | |
1209 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1210 | BPF_EXIT_INSN(), | |
1211 | ||
1212 | /* subprog 2 */ | |
1213 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1214 | /* lookup from map */ | |
1215 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1216 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1217 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1218 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1219 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1220 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1221 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1222 | BPF_EXIT_INSN(), /* return 0 */ | |
1223 | /* write map_value_ptr into stack frame of main prog */ | |
1224 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1225 | BPF_MOV64_IMM(BPF_REG_0, 1), | |
1226 | BPF_EXIT_INSN(), /* return 1 */ | |
1227 | }, | |
1228 | .prog_type = BPF_PROG_TYPE_XDP, | |
1229 | .fixup_map_hash_8b = { 23 }, | |
1230 | .result = REJECT, | |
1231 | .errstr = "invalid read from stack off -16+0 size 8", | |
1232 | }, | |
1233 | { | |
1234 | "calls: two calls that receive map_value via arg=ptr_stack_of_caller. test1", | |
1235 | .insns = { | |
1236 | /* main prog */ | |
1237 | /* pass fp-16, fp-8 into a function */ | |
1238 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1239 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1240 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1241 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1242 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1243 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1244 | BPF_EXIT_INSN(), | |
1245 | ||
1246 | /* subprog 1 */ | |
1247 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1248 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1249 | /* 1st lookup from map */ | |
1250 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1251 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1252 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1253 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1254 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1255 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1256 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1257 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1258 | /* write map_value_ptr into stack frame of main prog at fp-8 */ | |
1259 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1260 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1261 | ||
1262 | /* 2nd lookup from map */ | |
1263 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), /* 20 */ | |
1264 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1265 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1266 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, /* 24 */ | |
1267 | BPF_FUNC_map_lookup_elem), | |
1268 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1269 | BPF_MOV64_IMM(BPF_REG_9, 0), | |
1270 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1271 | /* write map_value_ptr into stack frame of main prog at fp-16 */ | |
1272 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
1273 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
1274 | ||
1275 | /* call 3rd func with fp-8, 0|1, fp-16, 0|1 */ | |
1276 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), /* 30 */ | |
1277 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_8), | |
1278 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_7), | |
1279 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_9), | |
1280 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), /* 34 */ | |
1281 | BPF_EXIT_INSN(), | |
1282 | ||
1283 | /* subprog 2 */ | |
1284 | /* if arg2 == 1 do *arg1 = 0 */ | |
1285 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 1, 2), | |
1286 | /* fetch map_value_ptr from the stack of this function */ | |
1287 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), | |
1288 | /* write into map value */ | |
1289 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1290 | ||
1291 | /* if arg4 == 1 do *arg3 = 0 */ | |
1292 | BPF_JMP_IMM(BPF_JNE, BPF_REG_4, 1, 2), | |
1293 | /* fetch map_value_ptr from the stack of this function */ | |
1294 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), | |
1295 | /* write into map value */ | |
1296 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 2, 0), | |
1297 | BPF_EXIT_INSN(), | |
1298 | }, | |
1299 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1300 | .fixup_map_hash_8b = { 12, 22 }, | |
1301 | .result = REJECT, | |
1302 | .errstr = "invalid access to map value, value_size=8 off=2 size=8", | |
1303 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1304 | }, | |
1305 | { | |
1306 | "calls: two calls that receive map_value via arg=ptr_stack_of_caller. test2", | |
1307 | .insns = { | |
1308 | /* main prog */ | |
1309 | /* pass fp-16, fp-8 into a function */ | |
1310 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1311 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1312 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1313 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1314 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1315 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1316 | BPF_EXIT_INSN(), | |
1317 | ||
1318 | /* subprog 1 */ | |
1319 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1320 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1321 | /* 1st lookup from map */ | |
1322 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1323 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1324 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1325 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1326 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1327 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1328 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1329 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1330 | /* write map_value_ptr into stack frame of main prog at fp-8 */ | |
1331 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1332 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1333 | ||
1334 | /* 2nd lookup from map */ | |
1335 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), /* 20 */ | |
1336 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1337 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1338 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, /* 24 */ | |
1339 | BPF_FUNC_map_lookup_elem), | |
1340 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1341 | BPF_MOV64_IMM(BPF_REG_9, 0), | |
1342 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1343 | /* write map_value_ptr into stack frame of main prog at fp-16 */ | |
1344 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
1345 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
1346 | ||
1347 | /* call 3rd func with fp-8, 0|1, fp-16, 0|1 */ | |
1348 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), /* 30 */ | |
1349 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_8), | |
1350 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_7), | |
1351 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_9), | |
1352 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), /* 34 */ | |
1353 | BPF_EXIT_INSN(), | |
1354 | ||
1355 | /* subprog 2 */ | |
1356 | /* if arg2 == 1 do *arg1 = 0 */ | |
1357 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 1, 2), | |
1358 | /* fetch map_value_ptr from the stack of this function */ | |
1359 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), | |
1360 | /* write into map value */ | |
1361 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1362 | ||
1363 | /* if arg4 == 1 do *arg3 = 0 */ | |
1364 | BPF_JMP_IMM(BPF_JNE, BPF_REG_4, 1, 2), | |
1365 | /* fetch map_value_ptr from the stack of this function */ | |
1366 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), | |
1367 | /* write into map value */ | |
1368 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1369 | BPF_EXIT_INSN(), | |
1370 | }, | |
1371 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1372 | .fixup_map_hash_8b = { 12, 22 }, | |
1373 | .result = ACCEPT, | |
1374 | }, | |
1375 | { | |
1376 | "calls: two jumps that receive map_value via arg=ptr_stack_of_jumper. test3", | |
1377 | .insns = { | |
1378 | /* main prog */ | |
1379 | /* pass fp-16, fp-8 into a function */ | |
1380 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1381 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1382 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1383 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1384 | BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2), | |
1385 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1386 | BPF_EXIT_INSN(), | |
1387 | ||
1388 | /* subprog 1 */ | |
1389 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1390 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1391 | /* 1st lookup from map */ | |
1392 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -24, 0), | |
1393 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1394 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -24), | |
1395 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1396 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1397 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1398 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1399 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1400 | /* write map_value_ptr into stack frame of main prog at fp-8 */ | |
1401 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1402 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1403 | ||
1404 | /* 2nd lookup from map */ | |
1405 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1406 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -24), | |
1407 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1408 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1409 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1410 | BPF_MOV64_IMM(BPF_REG_9, 0), // 26 | |
1411 | BPF_JMP_IMM(BPF_JA, 0, 0, 2), | |
1412 | /* write map_value_ptr into stack frame of main prog at fp-16 */ | |
1413 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
1414 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
1415 | ||
1416 | /* call 3rd func with fp-8, 0|1, fp-16, 0|1 */ | |
1417 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), // 30 | |
1418 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_8), | |
1419 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_7), | |
1420 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_9), | |
1421 | BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1), // 34 | |
1422 | BPF_JMP_IMM(BPF_JA, 0, 0, -30), | |
1423 | ||
1424 | /* subprog 2 */ | |
1425 | /* if arg2 == 1 do *arg1 = 0 */ | |
1426 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 1, 2), | |
1427 | /* fetch map_value_ptr from the stack of this function */ | |
1428 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), | |
1429 | /* write into map value */ | |
1430 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1431 | ||
1432 | /* if arg4 == 1 do *arg3 = 0 */ | |
1433 | BPF_JMP_IMM(BPF_JNE, BPF_REG_4, 1, 2), | |
1434 | /* fetch map_value_ptr from the stack of this function */ | |
1435 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), | |
1436 | /* write into map value */ | |
1437 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 2, 0), | |
1438 | BPF_JMP_IMM(BPF_JA, 0, 0, -8), | |
1439 | }, | |
1440 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1441 | .fixup_map_hash_8b = { 12, 22 }, | |
1442 | .result = REJECT, | |
1443 | .errstr = "invalid access to map value, value_size=8 off=2 size=8", | |
1444 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1445 | }, | |
1446 | { | |
1447 | "calls: two calls that receive map_value_ptr_or_null via arg. test1", | |
1448 | .insns = { | |
1449 | /* main prog */ | |
1450 | /* pass fp-16, fp-8 into a function */ | |
1451 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1452 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1453 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1454 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1455 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1456 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1457 | BPF_EXIT_INSN(), | |
1458 | ||
1459 | /* subprog 1 */ | |
1460 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1461 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1462 | /* 1st lookup from map */ | |
1463 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1464 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1465 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1466 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1467 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1468 | /* write map_value_ptr_or_null into stack frame of main prog at fp-8 */ | |
1469 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1470 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1471 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1472 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
1473 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1474 | ||
1475 | /* 2nd lookup from map */ | |
1476 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1477 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1478 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1479 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1480 | /* write map_value_ptr_or_null into stack frame of main prog at fp-16 */ | |
1481 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
1482 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1483 | BPF_MOV64_IMM(BPF_REG_9, 0), | |
1484 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
1485 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
1486 | ||
1487 | /* call 3rd func with fp-8, 0|1, fp-16, 0|1 */ | |
1488 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
1489 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_8), | |
1490 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_7), | |
1491 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_9), | |
1492 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
1493 | BPF_EXIT_INSN(), | |
1494 | ||
1495 | /* subprog 2 */ | |
1496 | /* if arg2 == 1 do *arg1 = 0 */ | |
1497 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 1, 2), | |
1498 | /* fetch map_value_ptr from the stack of this function */ | |
1499 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), | |
1500 | /* write into map value */ | |
1501 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1502 | ||
1503 | /* if arg4 == 1 do *arg3 = 0 */ | |
1504 | BPF_JMP_IMM(BPF_JNE, BPF_REG_4, 1, 2), | |
1505 | /* fetch map_value_ptr from the stack of this function */ | |
1506 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), | |
1507 | /* write into map value */ | |
1508 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1509 | BPF_EXIT_INSN(), | |
1510 | }, | |
1511 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1512 | .fixup_map_hash_8b = { 12, 22 }, | |
1513 | .result = ACCEPT, | |
1514 | }, | |
1515 | { | |
1516 | "calls: two calls that receive map_value_ptr_or_null via arg. test2", | |
1517 | .insns = { | |
1518 | /* main prog */ | |
1519 | /* pass fp-16, fp-8 into a function */ | |
1520 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), | |
1521 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), | |
1522 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1523 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), | |
1524 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1525 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1526 | BPF_EXIT_INSN(), | |
1527 | ||
1528 | /* subprog 1 */ | |
1529 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1530 | BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), | |
1531 | /* 1st lookup from map */ | |
1532 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1533 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1534 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1535 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1536 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1537 | /* write map_value_ptr_or_null into stack frame of main prog at fp-8 */ | |
1538 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1539 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1540 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1541 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
1542 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1543 | ||
1544 | /* 2nd lookup from map */ | |
1545 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1546 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1547 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1548 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1549 | /* write map_value_ptr_or_null into stack frame of main prog at fp-16 */ | |
1550 | BPF_STX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0), | |
1551 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2), | |
1552 | BPF_MOV64_IMM(BPF_REG_9, 0), | |
1553 | BPF_JMP_IMM(BPF_JA, 0, 0, 1), | |
1554 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
1555 | ||
1556 | /* call 3rd func with fp-8, 0|1, fp-16, 0|1 */ | |
1557 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
1558 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_8), | |
1559 | BPF_MOV64_REG(BPF_REG_3, BPF_REG_7), | |
1560 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_9), | |
1561 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
1562 | BPF_EXIT_INSN(), | |
1563 | ||
1564 | /* subprog 2 */ | |
1565 | /* if arg2 == 1 do *arg1 = 0 */ | |
1566 | BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 1, 2), | |
1567 | /* fetch map_value_ptr from the stack of this function */ | |
1568 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0), | |
1569 | /* write into map value */ | |
1570 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1571 | ||
1572 | /* if arg4 == 0 do *arg3 = 0 */ | |
1573 | BPF_JMP_IMM(BPF_JNE, BPF_REG_4, 0, 2), | |
1574 | /* fetch map_value_ptr from the stack of this function */ | |
1575 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), | |
1576 | /* write into map value */ | |
1577 | BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), | |
1578 | BPF_EXIT_INSN(), | |
1579 | }, | |
1580 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1581 | .fixup_map_hash_8b = { 12, 22 }, | |
1582 | .result = REJECT, | |
1583 | .errstr = "R0 invalid mem access 'inv'", | |
1584 | }, | |
1585 | { | |
1586 | "calls: pkt_ptr spill into caller stack", | |
1587 | .insns = { | |
1588 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1589 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1590 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), | |
1591 | BPF_EXIT_INSN(), | |
1592 | ||
1593 | /* subprog 1 */ | |
1594 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1595 | offsetof(struct __sk_buff, data)), | |
1596 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1597 | offsetof(struct __sk_buff, data_end)), | |
1598 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1599 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1600 | /* spill unchecked pkt_ptr into stack of caller */ | |
1601 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1602 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2), | |
1603 | /* now the pkt range is verified, read pkt_ptr from stack */ | |
1604 | BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_4, 0), | |
1605 | /* write 4 bytes into packet */ | |
1606 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1607 | BPF_EXIT_INSN(), | |
1608 | }, | |
1609 | .result = ACCEPT, | |
1610 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1611 | .retval = POINTER_VALUE, | |
1612 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1613 | }, | |
1614 | { | |
1615 | "calls: pkt_ptr spill into caller stack 2", | |
1616 | .insns = { | |
1617 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1618 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1619 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1620 | /* Marking is still kept, but not in all cases safe. */ | |
1621 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1622 | BPF_ST_MEM(BPF_W, BPF_REG_4, 0, 0), | |
1623 | BPF_EXIT_INSN(), | |
1624 | ||
1625 | /* subprog 1 */ | |
1626 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1627 | offsetof(struct __sk_buff, data)), | |
1628 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1629 | offsetof(struct __sk_buff, data_end)), | |
1630 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1631 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1632 | /* spill unchecked pkt_ptr into stack of caller */ | |
1633 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1634 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2), | |
1635 | /* now the pkt range is verified, read pkt_ptr from stack */ | |
1636 | BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_4, 0), | |
1637 | /* write 4 bytes into packet */ | |
1638 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1639 | BPF_EXIT_INSN(), | |
1640 | }, | |
1641 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1642 | .errstr = "invalid access to packet", | |
1643 | .result = REJECT, | |
1644 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1645 | }, | |
1646 | { | |
1647 | "calls: pkt_ptr spill into caller stack 3", | |
1648 | .insns = { | |
1649 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1650 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1651 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1652 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), | |
1653 | /* Marking is still kept and safe here. */ | |
1654 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1655 | BPF_ST_MEM(BPF_W, BPF_REG_4, 0, 0), | |
1656 | BPF_EXIT_INSN(), | |
1657 | ||
1658 | /* subprog 1 */ | |
1659 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1660 | offsetof(struct __sk_buff, data)), | |
1661 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1662 | offsetof(struct __sk_buff, data_end)), | |
1663 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1664 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1665 | /* spill unchecked pkt_ptr into stack of caller */ | |
1666 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1667 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1668 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 3), | |
1669 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1670 | /* now the pkt range is verified, read pkt_ptr from stack */ | |
1671 | BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_4, 0), | |
1672 | /* write 4 bytes into packet */ | |
1673 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1674 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1675 | BPF_EXIT_INSN(), | |
1676 | }, | |
1677 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1678 | .result = ACCEPT, | |
1679 | .retval = 1, | |
1680 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1681 | }, | |
1682 | { | |
1683 | "calls: pkt_ptr spill into caller stack 4", | |
1684 | .insns = { | |
1685 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1686 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1687 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1688 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), | |
1689 | /* Check marking propagated. */ | |
1690 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1691 | BPF_ST_MEM(BPF_W, BPF_REG_4, 0, 0), | |
1692 | BPF_EXIT_INSN(), | |
1693 | ||
1694 | /* subprog 1 */ | |
1695 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1696 | offsetof(struct __sk_buff, data)), | |
1697 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1698 | offsetof(struct __sk_buff, data_end)), | |
1699 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1700 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1701 | /* spill unchecked pkt_ptr into stack of caller */ | |
1702 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1703 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1704 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2), | |
1705 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1706 | /* don't read back pkt_ptr from stack here */ | |
1707 | /* write 4 bytes into packet */ | |
1708 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1709 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1710 | BPF_EXIT_INSN(), | |
1711 | }, | |
1712 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1713 | .result = ACCEPT, | |
1714 | .retval = 1, | |
1715 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1716 | }, | |
1717 | { | |
1718 | "calls: pkt_ptr spill into caller stack 5", | |
1719 | .insns = { | |
1720 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1721 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1722 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_1, 0), | |
1723 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1724 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1725 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_4, 0), | |
1726 | BPF_EXIT_INSN(), | |
1727 | ||
1728 | /* subprog 1 */ | |
1729 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1730 | offsetof(struct __sk_buff, data)), | |
1731 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1732 | offsetof(struct __sk_buff, data_end)), | |
1733 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1734 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1735 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1736 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 3), | |
1737 | /* spill checked pkt_ptr into stack of caller */ | |
1738 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1739 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1740 | /* don't read back pkt_ptr from stack here */ | |
1741 | /* write 4 bytes into packet */ | |
1742 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1743 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1744 | BPF_EXIT_INSN(), | |
1745 | }, | |
1746 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1747 | .errstr = "same insn cannot be used with different", | |
1748 | .result = REJECT, | |
1749 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1750 | }, | |
1751 | { | |
1752 | "calls: pkt_ptr spill into caller stack 6", | |
1753 | .insns = { | |
1754 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1755 | offsetof(struct __sk_buff, data_end)), | |
1756 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1757 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1758 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1759 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1760 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1761 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_4, 0), | |
1762 | BPF_EXIT_INSN(), | |
1763 | ||
1764 | /* subprog 1 */ | |
1765 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1766 | offsetof(struct __sk_buff, data)), | |
1767 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1768 | offsetof(struct __sk_buff, data_end)), | |
1769 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1770 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1771 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1772 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 3), | |
1773 | /* spill checked pkt_ptr into stack of caller */ | |
1774 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1775 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1776 | /* don't read back pkt_ptr from stack here */ | |
1777 | /* write 4 bytes into packet */ | |
1778 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1779 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1780 | BPF_EXIT_INSN(), | |
1781 | }, | |
1782 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1783 | .errstr = "R4 invalid mem access", | |
1784 | .result = REJECT, | |
1785 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1786 | }, | |
1787 | { | |
1788 | "calls: pkt_ptr spill into caller stack 7", | |
1789 | .insns = { | |
1790 | BPF_MOV64_IMM(BPF_REG_2, 0), | |
1791 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1792 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1793 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1794 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1795 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1796 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_4, 0), | |
1797 | BPF_EXIT_INSN(), | |
1798 | ||
1799 | /* subprog 1 */ | |
1800 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1801 | offsetof(struct __sk_buff, data)), | |
1802 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1803 | offsetof(struct __sk_buff, data_end)), | |
1804 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1805 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1806 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1807 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 3), | |
1808 | /* spill checked pkt_ptr into stack of caller */ | |
1809 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1810 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1811 | /* don't read back pkt_ptr from stack here */ | |
1812 | /* write 4 bytes into packet */ | |
1813 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1814 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1815 | BPF_EXIT_INSN(), | |
1816 | }, | |
1817 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1818 | .errstr = "R4 invalid mem access", | |
1819 | .result = REJECT, | |
1820 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1821 | }, | |
1822 | { | |
1823 | "calls: pkt_ptr spill into caller stack 8", | |
1824 | .insns = { | |
1825 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1826 | offsetof(struct __sk_buff, data)), | |
1827 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1828 | offsetof(struct __sk_buff, data_end)), | |
1829 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1830 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1831 | BPF_JMP_REG(BPF_JLE, BPF_REG_0, BPF_REG_3, 1), | |
1832 | BPF_EXIT_INSN(), | |
1833 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1834 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1835 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1836 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1837 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1838 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_4, 0), | |
1839 | BPF_EXIT_INSN(), | |
1840 | ||
1841 | /* subprog 1 */ | |
1842 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1843 | offsetof(struct __sk_buff, data)), | |
1844 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1845 | offsetof(struct __sk_buff, data_end)), | |
1846 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1847 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1848 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1849 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 3), | |
1850 | /* spill checked pkt_ptr into stack of caller */ | |
1851 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1852 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1853 | /* don't read back pkt_ptr from stack here */ | |
1854 | /* write 4 bytes into packet */ | |
1855 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1856 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1857 | BPF_EXIT_INSN(), | |
1858 | }, | |
1859 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1860 | .result = ACCEPT, | |
1861 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1862 | }, | |
1863 | { | |
1864 | "calls: pkt_ptr spill into caller stack 9", | |
1865 | .insns = { | |
1866 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1867 | offsetof(struct __sk_buff, data)), | |
1868 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1869 | offsetof(struct __sk_buff, data_end)), | |
1870 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1871 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1872 | BPF_JMP_REG(BPF_JLE, BPF_REG_0, BPF_REG_3, 1), | |
1873 | BPF_EXIT_INSN(), | |
1874 | BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), | |
1875 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), | |
1876 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1877 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), | |
1878 | BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), | |
1879 | BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_4, 0), | |
1880 | BPF_EXIT_INSN(), | |
1881 | ||
1882 | /* subprog 1 */ | |
1883 | BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, | |
1884 | offsetof(struct __sk_buff, data)), | |
1885 | BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, | |
1886 | offsetof(struct __sk_buff, data_end)), | |
1887 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), | |
1888 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8), | |
1889 | BPF_MOV64_IMM(BPF_REG_5, 0), | |
1890 | /* spill unchecked pkt_ptr into stack of caller */ | |
1891 | BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_2, 0), | |
1892 | BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2), | |
1893 | BPF_MOV64_IMM(BPF_REG_5, 1), | |
1894 | /* don't read back pkt_ptr from stack here */ | |
1895 | /* write 4 bytes into packet */ | |
1896 | BPF_ST_MEM(BPF_W, BPF_REG_2, 0, 0), | |
1897 | BPF_MOV64_REG(BPF_REG_0, BPF_REG_5), | |
1898 | BPF_EXIT_INSN(), | |
1899 | }, | |
1900 | .prog_type = BPF_PROG_TYPE_SCHED_CLS, | |
1901 | .errstr = "invalid access to packet", | |
1902 | .result = REJECT, | |
1903 | .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, | |
1904 | }, | |
1905 | { | |
1906 | "calls: caller stack init to zero or map_value_or_null", | |
1907 | .insns = { | |
1908 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1909 | BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -8), | |
1910 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1911 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1912 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1913 | /* fetch map_value_or_null or const_zero from stack */ | |
1914 | BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8), | |
1915 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), | |
1916 | /* store into map_value */ | |
1917 | BPF_ST_MEM(BPF_W, BPF_REG_0, 0, 0), | |
1918 | BPF_EXIT_INSN(), | |
1919 | ||
1920 | /* subprog 1 */ | |
1921 | /* if (ctx == 0) return; */ | |
1922 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 8), | |
1923 | /* else bpf_map_lookup() and *(fp - 8) = r0 */ | |
1924 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_2), | |
1925 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1926 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1927 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1928 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1929 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1930 | /* write map_value_ptr_or_null into stack frame of main prog at fp-8 */ | |
1931 | BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), | |
1932 | BPF_EXIT_INSN(), | |
1933 | }, | |
1934 | .fixup_map_hash_8b = { 13 }, | |
1935 | .result = ACCEPT, | |
1936 | .prog_type = BPF_PROG_TYPE_XDP, | |
1937 | }, | |
1938 | { | |
1939 | "calls: stack init to zero and pruning", | |
1940 | .insns = { | |
1941 | /* first make allocated_stack 16 byte */ | |
1942 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0), | |
1943 | /* now fork the execution such that the false branch | |
1944 | * of JGT insn will be verified second and it skisp zero | |
1945 | * init of fp-8 stack slot. If stack liveness marking | |
1946 | * is missing live_read marks from call map_lookup | |
1947 | * processing then pruning will incorrectly assume | |
1948 | * that fp-8 stack slot was unused in the fall-through | |
1949 | * branch and will accept the program incorrectly | |
1950 | */ | |
1951 | BPF_JMP_IMM(BPF_JGT, BPF_REG_1, 2, 2), | |
1952 | BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), | |
1953 | BPF_JMP_IMM(BPF_JA, 0, 0, 0), | |
1954 | BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), | |
1955 | BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), | |
1956 | BPF_LD_MAP_FD(BPF_REG_1, 0), | |
1957 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), | |
1958 | BPF_EXIT_INSN(), | |
1959 | }, | |
1960 | .fixup_map_hash_48b = { 6 }, | |
1961 | .errstr = "invalid indirect read from stack off -8+0 size 8", | |
1962 | .result = REJECT, | |
1963 | .prog_type = BPF_PROG_TYPE_XDP, | |
1964 | }, | |
1965 | { | |
1966 | "calls: ctx read at start of subprog", | |
1967 | .insns = { | |
1968 | BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), | |
1969 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 5), | |
1970 | BPF_JMP_REG(BPF_JSGT, BPF_REG_0, BPF_REG_0, 0), | |
1971 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), | |
1972 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), | |
1973 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), | |
1974 | BPF_EXIT_INSN(), | |
1975 | BPF_LDX_MEM(BPF_B, BPF_REG_9, BPF_REG_1, 0), | |
1976 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
1977 | BPF_EXIT_INSN(), | |
1978 | }, | |
1979 | .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, | |
81626001 | 1980 | .errstr_unpriv = "function calls to other bpf functions are allowed for", |
48729226 JK |
1981 | .result_unpriv = REJECT, |
1982 | .result = ACCEPT, | |
1983 | }, | |
1984 | { | |
1985 | "calls: cross frame pruning", | |
1986 | .insns = { | |
1987 | /* r8 = !!random(); | |
1988 | * call pruner() | |
1989 | * if (r8) | |
1990 | * do something bad; | |
1991 | */ | |
1992 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), | |
1993 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
1994 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), | |
1995 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
1996 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_8), | |
1997 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
1998 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_8, 1, 1), | |
1999 | BPF_LDX_MEM(BPF_B, BPF_REG_9, BPF_REG_1, 0), | |
2000 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
2001 | BPF_EXIT_INSN(), | |
2002 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0), | |
2003 | BPF_EXIT_INSN(), | |
2004 | }, | |
2005 | .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, | |
81626001 | 2006 | .errstr_unpriv = "function calls to other bpf functions are allowed for", |
48729226 JK |
2007 | .errstr = "!read_ok", |
2008 | .result = REJECT, | |
2009 | }, | |
83d16312 JK |
2010 | { |
2011 | "calls: cross frame pruning - liveness propagation", | |
2012 | .insns = { | |
2013 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), | |
2014 | BPF_MOV64_IMM(BPF_REG_8, 0), | |
2015 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), | |
2016 | BPF_MOV64_IMM(BPF_REG_8, 1), | |
2017 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), | |
2018 | BPF_MOV64_IMM(BPF_REG_9, 0), | |
2019 | BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), | |
2020 | BPF_MOV64_IMM(BPF_REG_9, 1), | |
2021 | BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), | |
2022 | BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), | |
2023 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_8, 1, 1), | |
2024 | BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_2, 0), | |
2025 | BPF_MOV64_IMM(BPF_REG_0, 0), | |
2026 | BPF_EXIT_INSN(), | |
2027 | BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0), | |
2028 | BPF_EXIT_INSN(), | |
2029 | }, | |
2030 | .prog_type = BPF_PROG_TYPE_SOCKET_FILTER, | |
81626001 | 2031 | .errstr_unpriv = "function calls to other bpf functions are allowed for", |
83d16312 JK |
2032 | .errstr = "!read_ok", |
2033 | .result = REJECT, | |
2034 | }, |