Fuzz introspector: src/fuzz/fuzz-compress.c
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
63 824 log_setup call site: {node_id} compress_blob
32 888 le64toh call site: {node_id} decompress_startswith
28 925 greedy_realloc call site: {node_id} decompress_startswith_lz4
24 954 unaligned_read_le64 call site: {node_id} decompress_startswith_zstd
23 786 timeval_store call site: {node_id} log_open_syslog
22 421 detect_container call site: {node_id} running_in_pidns
18 334 path_simplify_full call site: {node_id} fd_reopen_condition
16 145 sockaddr_un_set_path call site: {node_id} connect_unix_path
16 654 secure_getenv_bool call site: {node_id} parse_boolean
15 381 chattr_full call site: {node_id}
13 254 xopenat_full call site: {node_id} btrfs_subvol_make_fallback
12 533 memcpy_safe call site: {node_id} proc_cmdline_filter_pid1_args

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fuzz_setup_logging [function] [call site] 00001
2 log_set_assert_return_is_critical [function] [call site] 00002
2 log_set_max_level [function] [call site] 00003
3 log_level_is_valid [function] [call site] 00005
3 setlogmask [function] [call site] 00006
3 assert_cc [function] [call site] 00008
2 log_setup [function] [call site] 00010
3 log_parse_environment [function] [call site] 00014
4 should_parse_proc_cmdline [function] [call site] 00015
5 getpid_cached [function] [call site] 00016
6 __atomic_compare_exchange_n [function] [call site] 00017
6 pthread_atfork [function] [call site] 00019
5 invoked_by_systemd [function] [call site] 00021
6 parse_pid [function] [call site] 00023
7 safe_atolu [function] [call site] 00025
8 safe_atolu_full [function] [call site] 00026
9 assert_cc [function] [call site] 00027
9 safe_atou_full [function] [call site] 00028
10 SAFE_ATO_MASK_FLAGS [function] [call site] 00031
10 FLAGS_SET [function] [call site] 00032
10 FLAGS_SET [function] [call site] 00035
10 FLAGS_SET [function] [call site] 00037
10 mangle_base [function] [call site] 00039
11 SAFE_ATO_MASK_FLAGS [function] [call site] 00042
11 STARTSWITH_SET [function] [call site] 00043
11 STARTSWITH_SET [function] [call site] 00044
10 SAFE_ATO_MASK_FLAGS [function] [call site] 00046
7 pid_is_valid [function] [call site] 00047
6 log_debug_errno [function] [call site] 00048
6 getpid_cached [function] [call site] 00049
4 proc_cmdline_parse [function] [call site] 00050
5 proc_cmdline_strv_internal [function] [call site] 00053
6 secure_getenv [function] [call site] 00055
6 detect_container [function] [call site] 00092
7 log_debug_errno [function] [call site] 00094
7 log_debug_errno [function] [call site] 00096
7 read_one_line_file [function] [call site] 00097
8 read_one_line_file_at [function] [call site] 00098
9 fopen_unlocked_at [function] [call site] 00102
10 xfopenat_full [function] [call site] 00103
11 FLAGS_SET [function] [call site] 00130
11 xfopenat_unix_socket [function] [call site] 00131
12 connect_unix_path [function] [call site] 00147
13 connect_unix_inode [function] [call site] 00150
14 connect_unix_path_simple [function] [call site] 00153
14 FORMAT_PROC_FD_PATH [function] [call site] 00164
13 sizeof_field [function] [call site] 00167
13 connect_unix_path_simple [function] [call site] 00168
13 connect_unix_inode [function] [call site] 00170
12 shutdown [function] [call site] 00171
12 take_fdopen [function] [call site] 00172
11 FLAGS_SET [function] [call site] 00174
11 __fsetlocking [function] [call site] 00175
7 log_debug_errno [function] [call site] 00201
7 get_proc_field [function] [call site] 00204
8 fopen_unlocked [function] [call site] 00207
9 fopen_unlocked_at [function] [call site] 00208
8 proc_mounted [function] [call site] 00209
9 path_is_fs_type [function] [call site] 00210
10 is_fs_type_at [function] [call site] 00211
11 xstatfsat [function] [call site] 00212
12 xopenat [function] [call site] 00216
13 xopenat_full [function] [call site] 00217
14 FLAGS_SET [function] [call site] 00220
14 FLAGS_SET [function] [call site] 00221
14 FLAGS_SET [function] [call site] 00224
14 FLAGS_SET [function] [call site] 00225
14 fd_verify_regular [function] [call site] 00226
14 fd_reopen [function] [call site] 00239
15 FLAGS_SET [function] [call site] 00242
15 FLAGS_SET [function] [call site] 00243
15 FLAGS_SET [function] [call site] 00244
15 RET_NERRNO [function] [call site] 00245
15 proc_fd_enoent_errno [function] [call site] 00247
16 proc_mounted [function] [call site] 00248
14 FLAGS_SET [function] [call site] 00249
14 FLAGS_SET [function] [call site] 00250
14 FLAGS_SET [function] [call site] 00253
14 FLAGS_SET [function] [call site] 00254
14 FLAGS_SET [function] [call site] 00255
14 btrfs_subvol_make_fallback [function] [call site] 00256
15 btrfs_subvol_make [function] [call site] 00260
16 extract_subvolume_name [function] [call site] 00264
17 path_extract_filename [function] [call site] 00267
18 path_is_valid [function] [call site] 00268
19 path_is_valid_full [function] [call site] 00269
20 path_find_first_component [function] [call site] 00271
21 skip_slash_or_dot [function] [call site] 00273
22 startswith [function] [call site] 00275
21 strchrnul [function] [call site] 00278
21 skip_slash_or_dot [function] [call site] 00279
18 path_find_last_component [function] [call site] 00281
19 skip_slash_or_dot_backward [function] [call site] 00286
19 PTR_SUB1 [function] [call site] 00291
19 skip_slash_or_dot_backward [function] [call site] 00293
18 TAKE_PTR [function] [call site] 00295
17 btrfs_validate_subvolume_name [function] [call site] 00297
18 filename_is_valid [function] [call site] 00298
19 dot_or_dot_dot [function] [call site] 00300
19 filename_part_is_valid [function] [call site] 00301
20 strchrnul [function] [call site] 00302
17 TAKE_PTR [function] [call site] 00304
16 path_extract_directory [function] [call site] 00305
17 path_find_last_component [function] [call site] 00306
17 strdup_to [function] [call site] 00308
17 path_simplify [function] [call site] 00310
18 path_simplify_full [function] [call site] 00311
19 FLAGS_SET [function] [call site] 00313
19 path_is_absolute [function] [call site] 00320
19 path_find_first_component [function] [call site] 00321
19 path_startswith [function] [call site] 00322
20 path_startswith_full [function] [call site] 00323
21 path_find_first_component [function] [call site] 00326
21 FLAGS_SET [function] [call site] 00327
21 path_find_first_component [function] [call site] 00328
21 FLAGS_SET [function] [call site] 00329
21 FLAGS_SET [function] [call site] 00330
17 path_is_valid [function] [call site] 00335
17 TAKE_PTR [function] [call site] 00336
16 fd_reopen_condition [function] [call site] 00337
16 RET_NERRNO [function] [call site] 00345
15 ERRNO_IS_NOT_SUPPORTED [function] [call site] 00348
14 RET_NERRNO [function] [call site] 00350
14 FLAGS_SET [function] [call site] 00352
14 FLAGS_SET [function] [call site] 00353
14 FLAGS_SET [function] [call site] 00354
14 fd_verify_regular [function] [call site] 00356
14 FLAGS_SET [function] [call site] 00357
14 FLAGS_SET [function] [call site] 00360
14 fd_verify_regular [function] [call site] 00362
14 fd_reopen [function] [call site] 00363
14 openat_report_new [function] [call site] 00364
14 label_ops_post [function] [call site] 00371
14 FLAGS_SET [function] [call site] 00373
14 chattr_fd [function] [call site] 00374
15 chattr_full [function] [call site] 00375
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00384
16 FLAGS_SET [function] [call site] 00385
16 UPDATE_FLAG [function] [call site] 00386
16 FLAGS_SET [function] [call site] 00387
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00389
16 log_full_errno [function] [call site] 00390
16 FLAGS_SET [function] [call site] 00391
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00393
16 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00395
14 ERRNO_IS_IOCTL_NOT_SUPPORTED [function] [call site] 00396
14 label_ops_post [function] [call site] 00398
14 unlinkat [function] [call site] 00399
12 RET_NERRNO [function] [call site] 00400
11 is_fs_type [function] [call site] 00402
12 assert_cc [function] [call site] 00404
12 F_TYPE_EQUAL [function] [call site] 00405
8 read_line [function] [call site] 00406
7 log_debug_errno [function] [call site] 00407
7 parse_pid [function] [call site] 00409
7 log_debug_errno [function] [call site] 00410
7 procfs_file_alloca [function] [call site] 00411
7 read_one_line_file [function] [call site] 00412
7 log_debug_errno [function] [call site] 00413
7 startswith [function] [call site] 00414
7 read_one_line_file [function] [call site] 00415
7 log_debug_errno [function] [call site] 00417
7 getpid_cached [function] [call site] 00418
7 read_one_line_file [function] [call site] 00421
7 log_debug_errno [function] [call site] 00423
7 getenv_for_pid [function] [call site] 00424
8 getpid_cached [function] [call site] 00428
8 strdup_to_full [function] [call site] 00429
8 pid_is_valid [function] [call site] 00431
8 procfs_file_alloca [function] [call site] 00432
8 fopen_unlocked [function] [call site] 00433
8 read_nul_string [function] [call site] 00434
9 read_line_full [function] [call site] 00435
8 startswith [function] [call site] 00436
8 strdup_to_full [function] [call site] 00437
7 log_debug_errno [function] [call site] 00438
7 detect_container_files [function] [call site] 00439
8 log_debug_errno [function] [call site] 00441
7 running_in_pidns [function] [call site] 00442
8 log_debug_errno [function] [call site] 00449
7 log_debug [function] [call site] 00450
7 detect_container_files [function] [call site] 00452
7 container_from_string [function] [call site] 00453
7 log_debug [function] [call site] 00454
7 virtualization_to_string [function] [call site] 00455
6 pid_get_cmdline_strv [function] [call site] 00456
7 pid_get_cmdline_nulstr [function] [call site] 00460
8 procfs_file_alloca [function] [call site] 00461
6 proc_cmdline_filter_pid1_args [function] [call site] 00536
7 STRV_FOREACH [function] [call site] 00541
7 strv_skip [function] [call site] 00542
8 strv_isempty [function] [call site] 00543
8 strv_isempty [function] [call site] 00544
7 strv_extend [function] [call site] 00545
8 strv_extend_with_size [function] [call site] 00546
9 strv_consume_with_size [function] [call site] 00548
10 strv_push_with_size [function] [call site] 00549
11 strv_length [function] [call site] 00550
12 STRV_FOREACH [function] [call site] 00551
7 strv_extend_strv [function] [call site] 00553
7 strv_skip [function] [call site] 00565
6 read_full_file [function] [call site] 00569
7 read_full_file_full [function] [call site] 00570
8 FLAGS_SET [function] [call site] 00573
8 xfopenat_full [function] [call site] 00574
8 read_full_stream_full [function] [call site] 00575
9 FLAGS_SET [function] [call site] 00579
9 FLAGS_SET [function] [call site] 00581
9 FLAGS_SET [function] [call site] 00585
9 warn_file_is_world_accessible [function] [call site] 00586
10 log_syntax [function] [call site] 00588
10 log_warning [function] [call site] 00589
9 FLAGS_SET [function] [call site] 00590
9 FLAGS_SET [function] [call site] 00592
9 memcpy_safe [function] [call site] 00594
9 explicit_bzero_safe [function] [call site] 00595
10 explicit_bzero [function] [call site] 00596
9 MALLOC_SIZEOF_SAFE [function] [call site] 00599
9 errno_or_else [function] [call site] 00603
9 FLAGS_SET [function] [call site] 00605
9 FLAGS_SET [function] [call site] 00608
9 unbase64mem_full [function] [call site] 00610
10 CLEANUP_ERASE_PTR [function] [call site] 00614
10 unbase64_next [function] [call site] 00623
10 unbase64_next [function] [call site] 00624
10 unbase64_next [function] [call site] 00625
10 TAKE_PTR [function] [call site] 00627
9 explicit_bzero_safe [function] [call site] 00641
9 free_and_replace [function] [call site] 00642
9 FLAGS_SET [function] [call site] 00643
9 explicit_bzero_safe [function] [call site] 00646
6 strv_split_full [function] [call site] 00647
4 log_parse_environment_variables [function] [call site] 00684
5 log_set_target_from_string [function] [call site] 00686
6 log_target_from_string [function] [call site] 00687
6 log_set_target [function] [call site] 00688
5 log_warning [function] [call site] 00689
5 log_set_max_level_from_string [function] [call site] 00691
6 extract_first_word [function] [call site] 00692
6 log_level_from_string [function] [call site] 00694
6 log_set_max_level [function] [call site] 00695
6 log_target_from_string [function] [call site] 00697
6 log_level_from_string [function] [call site] 00698
5 log_warning_errno [function] [call site] 00699
5 getenv_bool [function] [call site] 00700
6 parse_boolean [function] [call site] 00702
5 log_warning_errno [function] [call site] 00703
5 log_set_max_level [function] [call site] 00704
5 log_show_color_from_string [function] [call site] 00706
6 parse_boolean [function] [call site] 00707
6 log_show_color [function] [call site] 00708
5 log_warning [function] [call site] 00709
5 log_show_location_from_string [function] [call site] 00711
6 parse_boolean [function] [call site] 00712
6 log_show_location [function] [call site] 00713
5 log_warning [function] [call site] 00714
5 log_show_time_from_string [function] [call site] 00716
6 parse_boolean [function] [call site] 00717
6 log_show_time [function] [call site] 00718
5 log_warning [function] [call site] 00719
5 log_show_tid_from_string [function] [call site] 00721
6 parse_boolean [function] [call site] 00722
6 log_show_tid [function] [call site] 00723
5 log_warning [function] [call site] 00724
5 log_set_ratelimit_kmsg_from_string [function] [call site] 00726
6 parse_boolean [function] [call site] 00727
5 log_warning [function] [call site] 00728
3 log_open [function] [call site] 00729
4 log_close_syslog [function] [call site] 00737
4 log_close_console [function] [call site] 00740
5 safe_close_above_stdio [function] [call site] 00741
6 safe_close [function] [call site] 00742
4 getpid_cached [function] [call site] 00744
4 stderr_is_journal [function] [call site] 00745
5 extract_first_word [function] [call site] 00747
5 safe_atou64 [function] [call site] 00748
6 assert_cc [function] [call site] 00749
6 safe_atollu [function] [call site] 00750
7 safe_atollu_full [function] [call site] 00751
5 safe_atou64 [function] [call site] 00764
4 log_open_journal [function] [call site] 00768
5 create_log_socket [function] [call site] 00769
6 fd_inc_sndbuf [function] [call site] 00777
7 fd_set_sndbuf [function] [call site] 00778
8 getsockopt [function] [call site] 00779
8 setsockopt_int [function] [call site] 00780
9 setsockopt [function] [call site] 00781
8 getsockopt [function] [call site] 00782
8 setsockopt_int [function] [call site] 00783
6 getpid_cached [function] [call site] 00784
6 timeval_store [function] [call site] 00785
6 timeval_store [function] [call site] 00787
6 setsockopt [function] [call site] 00788
5 connect_unix_path [function] [call site] 00789
5 log_close_journal [function] [call site] 00790
4 log_close_syslog [function] [call site] 00791
4 log_close_console [function] [call site] 00792
4 log_open_syslog [function] [call site] 00794
5 create_log_socket [function] [call site] 00795
5 connect_unix_path [function] [call site] 00796
5 safe_close [function] [call site] 00797
5 create_log_socket [function] [call site] 00798
5 connect_unix_path [function] [call site] 00799
5 log_close_syslog [function] [call site] 00800
4 log_close_journal [function] [call site] 00801
4 log_close_console [function] [call site] 00802
4 log_open_kmsg [function] [call site] 00804
5 fd_move_above_stdio [function] [call site] 00806
4 log_close_journal [function] [call site] 00807
4 log_close_syslog [function] [call site] 00808
4 log_close_console [function] [call site] 00809
4 log_close_journal [function] [call site] 00810
4 log_close_syslog [function] [call site] 00811
4 log_open_console [function] [call site] 00812
5 open_terminal [function] [call site] 00813
6 usleep_safe [function] [call site] 00816
7 clock_nanosleep [function] [call site] 00817
7 TIMESPEC_STORE [function] [call site] 00818
6 isatty_safe [function] [call site] 00819
5 fd_move_above_stdio [function] [call site] 00821
3 log_on_console [function] [call site] 00822
3 log_show_color [function] [call site] 00824
1 compression_to_string [function] [call site] 00826
1 compress_blob [function] [call site] 00830
2 compress_blob_zstd [function] [call site] 00831
3 dlopen_zstd [function] [call site] 00837
4 ELF_NOTE_DLOPEN [function] [call site] 00838
4 dlopen_many_sym_or_warn [function] [call site] 00839
4 DLSYM_ARG [function] [call site] 00840
4 DLSYM_ARG [function] [call site] 00841
4 DLSYM_ARG [function] [call site] 00842
4 DLSYM_ARG [function] [call site] 00843
4 DLSYM_ARG [function] [call site] 00844
4 DLSYM_ARG [function] [call site] 00845
4 DLSYM_ARG [function] [call site] 00846
4 DLSYM_ARG [function] [call site] 00847
4 DLSYM_ARG [function] [call site] 00848
4 DLSYM_ARG [function] [call site] 00849
4 DLSYM_ARG [function] [call site] 00850
4 DLSYM_ARG [function] [call site] 00851
4 DLSYM_ARG [function] [call site] 00852
4 DLSYM_ARG [function] [call site] 00853
4 DLSYM_ARG [function] [call site] 00854
4 DLSYM_ARG [function] [call site] 00855
3 sym_ZSTD_compress [function] [call site] 00856
3 sym_ZSTD_isError [function] [call site] 00857
3 zstd_ret_to_errno [function] [call site] 00858
4 sym_ZSTD_getErrorCode [function] [call site] 00859
2 compress_blob_lz4 [function] [call site] 00860
3 dlopen_lz4 [function] [call site] 00866
4 ELF_NOTE_DLOPEN [function] [call site] 00867
4 dlopen_many_sym_or_warn [function] [call site] 00868
4 DLSYM_ARG [function] [call site] 00869
4 DLSYM_ARG [function] [call site] 00870
4 DLSYM_ARG [function] [call site] 00871
4 DLSYM_ARG [function] [call site] 00872
4 DLSYM_ARG [function] [call site] 00873
4 DLSYM_ARG [function] [call site] 00874
4 DLSYM_ARG [function] [call site] 00875
4 DLSYM_ARG [function] [call site] 00876
4 DLSYM_ARG [function] [call site] 00877
4 DLSYM_ARG [function] [call site] 00878
4 DLSYM_ARG [function] [call site] 00879
4 DLSYM_ARG [function] [call site] 00880
4 DLSYM_ARG [function] [call site] 00881
4 DLSYM_ARG [function] [call site] 00882
4 DLSYM_ARG [function] [call site] 00883
3 sym_LZ4_compress_default [function] [call site] 00884
3 sym_LZ4_compress_HC [function] [call site] 00885
3 unaligned_write_le64 [function] [call site] 00886
4 le64toh [function] [call site] 00887
5 bswap_64_on_be [function] [call site] 00888
2 compress_blob_xz [function] [call site] 00889
3 dlopen_lzma [function] [call site] 00895
4 ELF_NOTE_DLOPEN [function] [call site] 00896
4 dlopen_many_sym_or_warn [function] [call site] 00897
4 DLSYM_ARG [function] [call site] 00898
4 DLSYM_ARG [function] [call site] 00899
4 DLSYM_ARG [function] [call site] 00900
4 DLSYM_ARG [function] [call site] 00901
4 DLSYM_ARG [function] [call site] 00902
4 DLSYM_ARG [function] [call site] 00903
3 sym_lzma_lzma_preset [function] [call site] 00904
3 sym_lzma_stream_buffer_encode [function] [call site] 00905
1 log_error_errno [function] [call site] 00906
1 log_debug [function] [call site] 00907
1 ASSERT_OK [function] [call site] 00910
1 decompress_startswith [function] [call site] 00911
2 decompress_startswith_xz [function] [call site] 00912
3 _cleanup_ [function] [call site] 00917
3 dlopen_lzma [function] [call site] 00918
3 sym_lzma_stream_decoder [function] [call site] 00919
3 greedy_realloc [function] [call site] 00920
4 MALLOC_SIZEOF_SAFE [function] [call site] 00922
4 _unlikely_ [function] [call site] 00923
4 MUL_ASSIGN_SAFE [function] [call site] 00924
3 MALLOC_SIZEOF_SAFE [function] [call site] 00927
3 sym_lzma_code [function] [call site] 00928
3 greedy_realloc [function] [call site] 00933
3 MALLOC_SIZEOF_SAFE [function] [call site] 00934
2 decompress_startswith_lz4 [function] [call site] 00935
3 dlopen_lz4 [function] [call site] 00940
3 greedy_realloc [function] [call site] 00941
3 MALLOC_SIZEOF_SAFE [function] [call site] 00943
3 sym_LZ4_decompress_safe_partial [function] [call site] 00944
3 sym_LZ4_versionNumber [function] [call site] 00945
3 decompress_blob_lz4 [function] [call site] 00947
4 dlopen_lz4 [function] [call site] 00952
4 unaligned_read_le64 [function] [call site] 00953
4 unaligned_read_le64 [function] [call site] 00955
4 greedy_realloc [function] [call site] 00956
4 sym_LZ4_decompress_safe [function] [call site] 00957
2 decompress_startswith_zstd [function] [call site] 00959
3 dlopen_zstd [function] [call site] 00964
3 _cleanup_ [function] [call site] 00966
3 sym_ZSTD_createDCtx [function] [call site] 00967
3 greedy_realloc [function] [call site] 00968
3 sym_ZSTD_DStreamOutSize [function] [call site] 00970
3 MALLOC_SIZEOF_SAFE [function] [call site] 00971
3 sym_ZSTD_decompressStream [function] [call site] 00972
3 sym_ZSTD_isError [function] [call site] 00973
3 log_debug [function] [call site] 00974
3 sym_ZSTD_getErrorName [function] [call site] 00975
3 zstd_ret_to_errno [function] [call site] 00976