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