101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
|
{
|
||
|
|
"calls: two calls returning different map pointers for lookup (hash, array)",
|
||
|
|
.insns = {
|
||
|
|
/* main prog */
|
||
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
|
||
|
|
BPF_CALL_REL(11),
|
||
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 1),
|
||
|
|
BPF_CALL_REL(12),
|
||
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
||
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
||
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
||
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
/* subprog 1 */
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
/* subprog 2 */
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
.fixup_map_hash_48b = { 13 },
|
||
|
|
.fixup_map_array_48b = { 16 },
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"calls: two calls returning different map pointers for lookup (hash, map in map)",
|
||
|
|
.insns = {
|
||
|
|
/* main prog */
|
||
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
|
||
|
|
BPF_CALL_REL(11),
|
||
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 1),
|
||
|
|
BPF_CALL_REL(12),
|
||
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
||
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
||
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
||
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
/* subprog 1 */
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
/* subprog 2 */
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
.fixup_map_in_map = { 16 },
|
||
|
|
.fixup_map_array_48b = { 13 },
|
||
|
|
.result = REJECT,
|
||
|
|
.errstr = "R0 invalid mem access 'map_ptr'",
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"cond: two branches returning different map pointers for lookup (tail, tail)",
|
||
|
|
.insns = {
|
||
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||
|
|
offsetof(struct __sk_buff, mark)),
|
||
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 3),
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_2, 0),
|
||
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_2, 0),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_3, 7),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.fixup_prog1 = { 5 },
|
||
|
|
.fixup_prog2 = { 2 },
|
||
|
|
.result_unpriv = REJECT,
|
||
|
|
.errstr_unpriv = "tail_call abusing map_ptr",
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 42,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"cond: two branches returning same map pointers for lookup (tail, tail)",
|
||
|
|
.insns = {
|
||
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||
|
|
offsetof(struct __sk_buff, mark)),
|
||
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 3),
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_2, 0),
|
||
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_2, 0),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_3, 7),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.fixup_prog2 = { 2, 5 },
|
||
|
|
.result_unpriv = ACCEPT,
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 42,
|
||
|
|
},
|