2 "PTR_TO_STACK store/load",
4 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
5 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
6 BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
7 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
14 "PTR_TO_STACK store/load - bad alignment on off",
16 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
17 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
18 BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
19 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
23 .errstr = "misaligned stack access off (0x0; 0x0)+-8+2 size 8",
26 "PTR_TO_STACK store/load - bad alignment on reg",
28 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
29 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
30 BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
31 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
35 .errstr = "misaligned stack access off (0x0; 0x0)+-10+8 size 8",
38 "PTR_TO_STACK store/load - out of bounds low",
40 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
41 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000),
42 BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
43 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
47 .errstr = "invalid write to stack R1 off=-79992 size=8",
48 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
51 "PTR_TO_STACK store/load - out of bounds high",
53 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
54 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
55 BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
56 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
60 .errstr = "invalid write to stack R1 off=0 size=8",
63 "PTR_TO_STACK check high 1",
65 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
66 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
67 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
68 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
75 "PTR_TO_STACK check high 2",
77 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
78 BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
79 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
86 "PTR_TO_STACK check high 3",
88 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
89 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
90 BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
91 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
94 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
95 .result_unpriv = REJECT,
100 "PTR_TO_STACK check high 4",
102 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
103 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
104 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
105 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
108 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
109 .errstr = "invalid write to stack R1 off=0 size=1",
113 "PTR_TO_STACK check high 5",
115 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
116 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
117 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
118 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
122 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
123 .errstr = "invalid write to stack R1",
126 "PTR_TO_STACK check high 6",
128 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
129 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
130 BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
131 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
135 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
136 .errstr = "invalid write to stack",
139 "PTR_TO_STACK check high 7",
141 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
142 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
143 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
144 BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
145 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
149 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
150 .errstr = "fp pointer offset",
153 "PTR_TO_STACK check low 1",
155 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
156 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -512),
157 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
158 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
165 "PTR_TO_STACK check low 2",
167 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
168 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
169 BPF_ST_MEM(BPF_B, BPF_REG_1, 1, 42),
170 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 1),
173 .result_unpriv = REJECT,
174 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
179 "PTR_TO_STACK check low 3",
181 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
182 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
183 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
184 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
187 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
188 .errstr = "invalid write to stack R1 off=-513 size=1",
192 "PTR_TO_STACK check low 4",
194 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
195 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, INT_MIN),
196 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
197 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
201 .errstr = "math between fp pointer",
204 "PTR_TO_STACK check low 5",
206 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
207 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
208 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
209 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
213 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
214 .errstr = "invalid write to stack",
217 "PTR_TO_STACK check low 6",
219 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
220 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
221 BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
222 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
226 .errstr = "invalid write to stack",
227 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
230 "PTR_TO_STACK check low 7",
232 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
233 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
234 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
235 BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
236 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
240 .errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
241 .errstr = "fp pointer offset",
244 "PTR_TO_STACK mixed reg/k, 1",
246 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
247 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
248 BPF_MOV64_IMM(BPF_REG_2, -3),
249 BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
250 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
251 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
258 "PTR_TO_STACK mixed reg/k, 2",
260 BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
261 BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0),
262 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
263 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
264 BPF_MOV64_IMM(BPF_REG_2, -3),
265 BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
266 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
267 BPF_MOV64_REG(BPF_REG_5, BPF_REG_10),
268 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_5, -6),
275 "PTR_TO_STACK mixed reg/k, 3",
277 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
278 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
279 BPF_MOV64_IMM(BPF_REG_2, -3),
280 BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
281 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
282 BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
291 BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
292 BPF_MOV64_IMM(BPF_REG_2, -3),
293 BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
294 BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
295 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
302 "stack pointer arithmetic",
304 BPF_MOV64_IMM(BPF_REG_1, 4),
305 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
306 BPF_MOV64_REG(BPF_REG_7, BPF_REG_10),
307 BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
308 BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
309 BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
310 BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_1),
311 BPF_ST_MEM(0, BPF_REG_2, 4, 0),
312 BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
313 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8),
314 BPF_ST_MEM(0, BPF_REG_2, 4, 0),
315 BPF_MOV64_IMM(BPF_REG_0, 0),
321 "store PTR_TO_STACK in R10 to array map using BPF_B",
323 /* Load pointer to map. */
324 BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
325 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
326 BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
327 BPF_LD_MAP_FD(BPF_REG_1, 0),
328 BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
329 BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
330 BPF_MOV64_IMM(BPF_REG_0, 2),
332 BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
333 /* Copy R10 to R9. */
334 BPF_MOV64_REG(BPF_REG_9, BPF_REG_10),
335 /* Pollute other registers with unaligned values. */
336 BPF_MOV64_IMM(BPF_REG_2, -1),
337 BPF_MOV64_IMM(BPF_REG_3, -1),
338 BPF_MOV64_IMM(BPF_REG_4, -1),
339 BPF_MOV64_IMM(BPF_REG_5, -1),
340 BPF_MOV64_IMM(BPF_REG_6, -1),
341 BPF_MOV64_IMM(BPF_REG_7, -1),
342 BPF_MOV64_IMM(BPF_REG_8, -1),
343 /* Store both R9 and R10 with BPF_B and read back. */
344 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_10, 0),
345 BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_1, 0),
346 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_9, 0),
347 BPF_LDX_MEM(BPF_B, BPF_REG_3, BPF_REG_1, 0),
348 /* Should read back as same value. */
349 BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_3, 2),
350 BPF_MOV64_IMM(BPF_REG_0, 1),
352 BPF_MOV64_IMM(BPF_REG_0, 42),
355 .fixup_map_array_48b = { 3 },
358 .prog_type = BPF_PROG_TYPE_SCHED_CLS,