Fuzz introspector: fuzz-efi-string
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
506 22 should_parse_proc_cmdline call site: {node_id} proc_cmdline_parse
150 534 memcpy_safe call site: {node_id} read_full_file
43 767 log_open call site: {node_id} log_open_syslog
19 747 stderr_is_journal call site: {node_id} extract_first_word
9 691 log_parse_environment_variables call site: {node_id} log_set_max_level_from_string
9 813 log_open call site: {node_id} open_terminal
4 732 log_close_journal call site: {node_id} close_nointr
4 740 log_close_syslog call site: {node_id} log_close_console
2 687 log_parse_environment_variables call site: {node_id} log_set_target
2 707 log_parse_environment_variables call site: {node_id} parse_boolean
2 712 log_parse_environment_variables call site: {node_id} parse_boolean
2 717 log_parse_environment_variables call site: {node_id} parse_boolean

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 outside_size_range [function] [call site] 00001
1 fuzz_setup_logging [function] [call site] 00002
2 log_set_assert_return_is_critical [function] [call site] 00003
2 log_set_max_level [function] [call site] 00004
3 log_level_is_valid [function] [call site] 00006
3 setlogmask [function] [call site] 00007
3 assert_cc [function] [call site] 00009
2 log_setup [function] [call site] 00011
3 log_parse_environment [function] [call site] 00015
4 should_parse_proc_cmdline [function] [call site] 00016
5 getpid_cached [function] [call site] 00017
6 __atomic_compare_exchange_n [function] [call site] 00018
6 pthread_atfork [function] [call site] 00020
5 invoked_by_systemd [function] [call site] 00022
6 parse_pid [function] [call site] 00024
7 safe_atolu [function] [call site] 00026
8 safe_atolu_full [function] [call site] 00027
9 assert_cc [function] [call site] 00028
9 safe_atou_full [function] [call site] 00029
10 SAFE_ATO_MASK_FLAGS [function] [call site] 00032
10 FLAGS_SET [function] [call site] 00033
10 FLAGS_SET [function] [call site] 00036
10 FLAGS_SET [function] [call site] 00038
10 mangle_base [function] [call site] 00040
11 SAFE_ATO_MASK_FLAGS [function] [call site] 00043
11 STARTSWITH_SET [function] [call site] 00044
11 STARTSWITH_SET [function] [call site] 00045
10 SAFE_ATO_MASK_FLAGS [function] [call site] 00047
7 pid_is_valid [function] [call site] 00048
6 log_debug_errno [function] [call site] 00049
6 getpid_cached [function] [call site] 00050
4 proc_cmdline_parse [function] [call site] 00051
5 proc_cmdline_strv_internal [function] [call site] 00054
6 secure_getenv [function] [call site] 00056
6 detect_container [function] [call site] 00093
7 log_debug_errno [function] [call site] 00095
7 log_debug_errno [function] [call site] 00097
7 read_one_line_file [function] [call site] 00098
8 read_one_line_file_at [function] [call site] 00099
9 fopen_unlocked_at [function] [call site] 00103
10 xfopenat_full [function] [call site] 00104
11 FLAGS_SET [function] [call site] 00131
11 xfopenat_unix_socket [function] [call site] 00132
12 connect_unix_path [function] [call site] 00148
13 connect_unix_inode [function] [call site] 00151
14 connect_unix_path_simple [function] [call site] 00154
14 FORMAT_PROC_FD_PATH [function] [call site] 00165
13 sizeof_field [function] [call site] 00168
13 connect_unix_path_simple [function] [call site] 00169
13 connect_unix_inode [function] [call site] 00171
12 shutdown [function] [call site] 00172
12 take_fdopen [function] [call site] 00173
11 FLAGS_SET [function] [call site] 00175
11 __fsetlocking [function] [call site] 00176
7 log_debug_errno [function] [call site] 00202
7 get_proc_field [function] [call site] 00205
8 fopen_unlocked [function] [call site] 00208
9 fopen_unlocked_at [function] [call site] 00209
8 proc_mounted [function] [call site] 00210
9 path_is_fs_type [function] [call site] 00211
10 is_fs_type_at [function] [call site] 00212
11 xstatfsat [function] [call site] 00213
12 xopenat [function] [call site] 00217
13 xopenat_full [function] [call site] 00218
14 FLAGS_SET [function] [call site] 00221
14 FLAGS_SET [function] [call site] 00222
14 FLAGS_SET [function] [call site] 00225
14 FLAGS_SET [function] [call site] 00226
14 fd_verify_regular [function] [call site] 00227
14 fd_reopen [function] [call site] 00240
15 FLAGS_SET [function] [call site] 00243
15 FLAGS_SET [function] [call site] 00244
15 FLAGS_SET [function] [call site] 00245
15 RET_NERRNO [function] [call site] 00246
15 proc_fd_enoent_errno [function] [call site] 00248
16 proc_mounted [function] [call site] 00249
14 FLAGS_SET [function] [call site] 00250
14 FLAGS_SET [function] [call site] 00251
14 FLAGS_SET [function] [call site] 00254
14 FLAGS_SET [function] [call site] 00255
14 FLAGS_SET [function] [call site] 00256
14 btrfs_subvol_make_fallback [function] [call site] 00257
15 btrfs_subvol_make [function] [call site] 00261
16 extract_subvolume_name [function] [call site] 00265
17 path_extract_filename [function] [call site] 00268
18 path_is_valid [function] [call site] 00269
19 path_is_valid_full [function] [call site] 00270
20 path_find_first_component [function] [call site] 00272
21 skip_slash_or_dot [function] [call site] 00274
22 startswith [function] [call site] 00276
21 strchrnul [function] [call site] 00279
21 skip_slash_or_dot [function] [call site] 00280
18 path_find_last_component [function] [call site] 00282
19 skip_slash_or_dot_backward [function] [call site] 00287
19 PTR_SUB1 [function] [call site] 00292
19 skip_slash_or_dot_backward [function] [call site] 00294
18 TAKE_PTR [function] [call site] 00296
17 btrfs_validate_subvolume_name [function] [call site] 00298
18 filename_is_valid [function] [call site] 00299
19 dot_or_dot_dot [function] [call site] 00301
19 filename_part_is_valid [function] [call site] 00302
20 strchrnul [function] [call site] 00303
17 TAKE_PTR [function] [call site] 00305
16 path_extract_directory [function] [call site] 00306
17 path_find_last_component [function] [call site] 00307
17 strdup_to [function] [call site] 00309
17 path_simplify [function] [call site] 00311
18 path_simplify_full [function] [call site] 00312
19 FLAGS_SET [function] [call site] 00314
19 path_is_absolute [function] [call site] 00321
19 path_find_first_component [function] [call site] 00322
19 path_startswith [function] [call site] 00323
20 path_startswith_full [function] [call site] 00324
21 path_find_first_component [function] [call site] 00327
21 FLAGS_SET [function] [call site] 00328
21 path_find_first_component [function] [call site] 00329
21 FLAGS_SET [function] [call site] 00330
21 FLAGS_SET [function] [call site] 00331
17 path_is_valid [function] [call site] 00336
17 TAKE_PTR [function] [call site] 00337
16 fd_reopen_condition [function] [call site] 00338
16 RET_NERRNO [function] [call site] 00346
15 ERRNO_IS_NOT_SUPPORTED [function] [call site] 00349
14 RET_NERRNO [function] [call site] 00351
14 FLAGS_SET [function] [call site] 00353
14 FLAGS_SET [function] [call site] 00354
14 FLAGS_SET [function] [call site] 00355
14 fd_verify_regular [function] [call site] 00357
14 FLAGS_SET [function] [call site] 00358
14 FLAGS_SET [function] [call site] 00361
14 fd_verify_regular [function] [call site] 00363
14 fd_reopen [function] [call site] 00364
14 openat_report_new [function] [call site] 00365
14 label_ops_post [function] [call site] 00372
14 FLAGS_SET [function] [call site] 00374
14 chattr_fd [function] [call site] 00375
15 chattr_full [function] [call site] 00376
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00385
16 FLAGS_SET [function] [call site] 00386
16 UPDATE_FLAG [function] [call site] 00387
16 FLAGS_SET [function] [call site] 00388
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00390
16 log_full_errno [function] [call site] 00391
16 FLAGS_SET [function] [call site] 00392
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00394
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00396
14 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00397
14 label_ops_post [function] [call site] 00399
14 unlinkat [function] [call site] 00400
12 RET_NERRNO [function] [call site] 00401
11 is_fs_type [function] [call site] 00403
12 assert_cc [function] [call site] 00405
12 F_TYPE_EQUAL [function] [call site] 00406
8 read_line [function] [call site] 00407
7 log_debug_errno [function] [call site] 00408
7 parse_pid [function] [call site] 00410
7 log_debug_errno [function] [call site] 00411
7 procfs_file_alloca [function] [call site] 00412
7 read_one_line_file [function] [call site] 00413
7 log_debug_errno [function] [call site] 00414
7 startswith [function] [call site] 00415
7 read_one_line_file [function] [call site] 00416
7 log_debug_errno [function] [call site] 00418
7 getpid_cached [function] [call site] 00419
7 read_one_line_file [function] [call site] 00422
7 log_debug_errno [function] [call site] 00424
7 getenv_for_pid [function] [call site] 00425
8 getpid_cached [function] [call site] 00429
8 strdup_to_full [function] [call site] 00430
8 pid_is_valid [function] [call site] 00432
8 procfs_file_alloca [function] [call site] 00433
8 fopen_unlocked [function] [call site] 00434
8 read_nul_string [function] [call site] 00435
9 read_line_full [function] [call site] 00436
8 startswith [function] [call site] 00437
8 strdup_to_full [function] [call site] 00438
7 log_debug_errno [function] [call site] 00439
7 detect_container_files [function] [call site] 00440
8 log_debug_errno [function] [call site] 00442
7 running_in_pidns [function] [call site] 00443
8 log_debug_errno [function] [call site] 00450
7 log_debug [function] [call site] 00451
7 detect_container_files [function] [call site] 00453
7 container_from_string [function] [call site] 00454
7 log_debug [function] [call site] 00455
7 virtualization_to_string [function] [call site] 00456
6 pid_get_cmdline_strv [function] [call site] 00457
7 pid_get_cmdline_nulstr [function] [call site] 00461
8 procfs_file_alloca [function] [call site] 00462
6 proc_cmdline_filter_pid1_args [function] [call site] 00537
7 STRV_FOREACH [function] [call site] 00542
7 strv_skip [function] [call site] 00543
8 strv_isempty [function] [call site] 00544
8 strv_isempty [function] [call site] 00545
7 strv_extend [function] [call site] 00546
8 strv_extend_with_size [function] [call site] 00547
9 strv_consume_with_size [function] [call site] 00549
10 strv_push_with_size [function] [call site] 00550
11 strv_length [function] [call site] 00551
12 STRV_FOREACH [function] [call site] 00552
7 strv_extend_strv [function] [call site] 00554
7 strv_skip [function] [call site] 00566
6 read_full_file [function] [call site] 00570
7 read_full_file_full [function] [call site] 00571
8 FLAGS_SET [function] [call site] 00574
8 xfopenat_full [function] [call site] 00575
8 read_full_stream_full [function] [call site] 00576
9 FLAGS_SET [function] [call site] 00580
9 FLAGS_SET [function] [call site] 00582
9 FLAGS_SET [function] [call site] 00586
9 warn_file_is_world_accessible [function] [call site] 00587
10 log_syntax [function] [call site] 00589
10 log_warning [function] [call site] 00590
9 FLAGS_SET [function] [call site] 00591
9 FLAGS_SET [function] [call site] 00593
9 memcpy_safe [function] [call site] 00595
9 explicit_bzero_safe [function] [call site] 00596
10 explicit_bzero [function] [call site] 00597
9 MALLOC_SIZEOF_SAFE [function] [call site] 00600
9 errno_or_else [function] [call site] 00604
9 FLAGS_SET [function] [call site] 00606
9 FLAGS_SET [function] [call site] 00609
9 unbase64mem_full [function] [call site] 00611
10 CLEANUP_ERASE_PTR [function] [call site] 00615
10 unbase64_next [function] [call site] 00624
10 unbase64_next [function] [call site] 00625
10 unbase64_next [function] [call site] 00626
10 TAKE_PTR [function] [call site] 00628
9 explicit_bzero_safe [function] [call site] 00642
9 free_and_replace [function] [call site] 00643
9 FLAGS_SET [function] [call site] 00644
9 explicit_bzero_safe [function] [call site] 00647
6 strv_split_full [function] [call site] 00648
4 log_parse_environment_variables [function] [call site] 00685
5 log_set_target_from_string [function] [call site] 00687
6 log_target_from_string [function] [call site] 00688
6 log_set_target [function] [call site] 00689
5 log_warning [function] [call site] 00690
5 log_set_max_level_from_string [function] [call site] 00692
6 extract_first_word [function] [call site] 00693
6 log_level_from_string [function] [call site] 00695
6 log_set_max_level [function] [call site] 00696
6 log_target_from_string [function] [call site] 00698
6 log_level_from_string [function] [call site] 00699
5 log_warning_errno [function] [call site] 00700
5 getenv_bool [function] [call site] 00701
6 parse_boolean [function] [call site] 00703
5 log_warning_errno [function] [call site] 00704
5 log_set_max_level [function] [call site] 00705
5 log_show_color_from_string [function] [call site] 00707
6 parse_boolean [function] [call site] 00708
6 log_show_color [function] [call site] 00709
5 log_warning [function] [call site] 00710
5 log_show_location_from_string [function] [call site] 00712
6 parse_boolean [function] [call site] 00713
6 log_show_location [function] [call site] 00714
5 log_warning [function] [call site] 00715
5 log_show_time_from_string [function] [call site] 00717
6 parse_boolean [function] [call site] 00718
6 log_show_time [function] [call site] 00719
5 log_warning [function] [call site] 00720
5 log_show_tid_from_string [function] [call site] 00722
6 parse_boolean [function] [call site] 00723
6 log_show_tid [function] [call site] 00724
5 log_warning [function] [call site] 00725
5 log_set_ratelimit_kmsg_from_string [function] [call site] 00727
6 parse_boolean [function] [call site] 00728
5 log_warning [function] [call site] 00729
3 log_open [function] [call site] 00730
4 log_close_syslog [function] [call site] 00738
4 log_close_console [function] [call site] 00741
5 safe_close_above_stdio [function] [call site] 00742
6 safe_close [function] [call site] 00743
4 getpid_cached [function] [call site] 00745
4 stderr_is_journal [function] [call site] 00746
5 extract_first_word [function] [call site] 00748
5 safe_atou64 [function] [call site] 00749
6 assert_cc [function] [call site] 00750
6 safe_atollu [function] [call site] 00751
7 safe_atollu_full [function] [call site] 00752
5 safe_atou64 [function] [call site] 00765
4 log_open_journal [function] [call site] 00769
5 create_log_socket [function] [call site] 00770
6 fd_inc_sndbuf [function] [call site] 00778
7 fd_set_sndbuf [function] [call site] 00779
8 getsockopt [function] [call site] 00780
8 setsockopt_int [function] [call site] 00781
9 setsockopt [function] [call site] 00782
8 getsockopt [function] [call site] 00783
8 setsockopt_int [function] [call site] 00784
6 getpid_cached [function] [call site] 00785
6 timeval_store [function] [call site] 00786
6 timeval_store [function] [call site] 00788
6 setsockopt [function] [call site] 00789
5 connect_unix_path [function] [call site] 00790
5 log_close_journal [function] [call site] 00791
4 log_close_syslog [function] [call site] 00792
4 log_close_console [function] [call site] 00793
4 log_open_syslog [function] [call site] 00795
5 create_log_socket [function] [call site] 00796
5 connect_unix_path [function] [call site] 00797
5 safe_close [function] [call site] 00798
5 create_log_socket [function] [call site] 00799
5 connect_unix_path [function] [call site] 00800
5 log_close_syslog [function] [call site] 00801
4 log_close_journal [function] [call site] 00802
4 log_close_console [function] [call site] 00803
4 log_open_kmsg [function] [call site] 00805
5 fd_move_above_stdio [function] [call site] 00807
4 log_close_journal [function] [call site] 00808
4 log_close_syslog [function] [call site] 00809
4 log_close_console [function] [call site] 00810
4 log_close_journal [function] [call site] 00811
4 log_close_syslog [function] [call site] 00812
4 log_open_console [function] [call site] 00813
5 open_terminal [function] [call site] 00814
6 usleep_safe [function] [call site] 00817
7 clock_nanosleep [function] [call site] 00818
7 TIMESPEC_STORE [function] [call site] 00819
6 isatty_safe [function] [call site] 00820
5 fd_move_above_stdio [function] [call site] 00822
3 log_on_console [function] [call site] 00823
3 log_show_color [function] [call site] 00825
1 ASSERT_SE_PTR [function] [call site] 00827
1 memdup_suffix0 [function] [call site] 00828
1 DO_NOT_OPTIMIZE [function] [call site] 00829
1 parse_number8 [function] [call site] 00830
1 memdup_str16 [function] [call site] 00831
2 assert_se [function] [call site] 00832
1 DO_NOT_OPTIMIZE [function] [call site] 00833
1 parse_number16 [function] [call site] 00834
1 memdup_str16 [function] [call site] 00835
1 memdup_str16 [function] [call site] 00836
1 DO_NOT_OPTIMIZE [function] [call site] 00837