diff options
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/value_or_null.c')
-rw-r--r-- | tools/testing/selftests/bpf/verifier/value_or_null.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/tools/testing/selftests/bpf/verifier/value_or_null.c b/tools/testing/selftests/bpf/verifier/value_or_null.c deleted file mode 100644 index 52a8bca14f03..000000000000 --- a/tools/testing/selftests/bpf/verifier/value_or_null.c +++ /dev/null @@ -1,220 +0,0 @@ -{ - "multiple registers share map_lookup_elem result", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .result = ACCEPT, - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "alu ops on ptr_to_map_value_or_null, 1", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -2), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 2), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .errstr = "R4 pointer arithmetic on map_value_or_null", - .result = REJECT, - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "alu ops on ptr_to_map_value_or_null, 2", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_ALU64_IMM(BPF_AND, BPF_REG_4, -1), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .errstr = "R4 pointer arithmetic on map_value_or_null", - .result = REJECT, - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "alu ops on ptr_to_map_value_or_null, 3", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_4, 1), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .errstr = "R4 pointer arithmetic on map_value_or_null", - .result = REJECT, - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "invalid memory access with multiple map_lookup_elem calls", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_1), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .result = REJECT, - .errstr = "R4 !read_ok", - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "valid indirect map_lookup_elem access with 2nd lookup in branch", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_1), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_2), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_IMM(BPF_REG_2, 10), - BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .result = ACCEPT, - .prog_type = BPF_PROG_TYPE_SCHED_CLS -}, -{ - "invalid map access from else condition", - .insns = { - 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_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), - BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES-1, 1), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 1), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr = "R0 unbounded memory access", - .result = REJECT, - .errstr_unpriv = "R0 leaks addr", - .result_unpriv = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "map lookup and null branch prediction", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 10), - BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 2), - BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 1), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_10, 10), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_8b = { 4 }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "MAP_VALUE_OR_NULL check_ids() in regsafe()", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - /* r9 = map_lookup_elem(...) */ - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, - 0), - BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_9, BPF_REG_0), - /* r8 = map_lookup_elem(...) */ - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, - 0), - BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), - /* r7 = ktime_get_ns() */ - BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - /* r6 = ktime_get_ns() */ - BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - /* if r6 > r7 goto +1 ; no new information about the state is derived from - * ; this check, thus produced verifier states differ - * ; only in 'insn_idx' - * r9 = r8 ; optionally share ID between r9 and r8 - */ - BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 1), - BPF_MOV64_REG(BPF_REG_9, BPF_REG_8), - /* if r9 == 0 goto <exit> */ - BPF_JMP_IMM(BPF_JEQ, BPF_REG_9, 0, 1), - /* read map value via r8, this is not always - * safe because r8 might be not equal to r9. - */ - BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_8, 0), - /* exit 0 */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .flags = BPF_F_TEST_STATE_FREQ, - .fixup_map_hash_8b = { 3, 9 }, - .result = REJECT, - .errstr = "R8 invalid mem access 'map_value_or_null'", - .result_unpriv = REJECT, - .errstr_unpriv = "", - .prog_type = BPF_PROG_TYPE_CGROUP_SKB, -}, |