Fuzz introspector: buffer_fuzzer
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
187 0 EP call site: 00000 evbuffer_readln

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 evbuffer_new [function] [call site] 00001
2 event_mm_calloc_ [function] [call site] 00002
3 calloc [call site] 00003
3 __errno_location [call site] 00004
1 evbuffer_add [function] [call site] 00005
2 evbuffer_chain_insert_new [function] [call site] 00006
3 evbuffer_chain_new_membuf [function] [call site] 00007
4 evbuffer_chain_new [function] [call site] 00008
5 event_mm_malloc_ [function] [call site] 00009
3 evbuffer_chain_insert [function] [call site] 00010
4 evbuffer_free_trailing_empty_chains [function] [call site] 00011
5 evbuffer_free_all_chains [function] [call site] 00012
6 evbuffer_chain_free [function] [call site] 00013
7 evbuffer_file_segment_free [function] [call site] 00014
8 get_page_size [function] [call site] 00015
9 sysconf [call site] 00016
8 munmap [call site] 00017
8 event_warn [function] [call site] 00018
9 __errno_location [call site] 00019
9 strerror [call site] 00020
9 event_logv_ [function] [call site] 00021
10 evutil_vsnprintf [function] [call site] 00022
11 vsnprintf [call site] 00023
10 strlen [call site] 00024
10 evutil_snprintf [function] [call site] 00025
11 evutil_vsnprintf [function] [call site] 00026
10 event_log [function] [call site] 00027
11 fprintf [call site] 00028
8 event_mm_free_ [function] [call site] 00029
8 close [call site] 00030
8 event_mm_free_ [function] [call site] 00031
7 evbuffer_chain_free [function] [call site] 00032
8 evbuffer_decref_and_unlock_ [function] [call site] 00033
9 evbuffer_chain_free [function] [call site] 00034
10 event_mm_free_ [function] [call site] 00035
9 evbuffer_remove_all_callbacks [function] [call site] 00036
10 event_mm_free_ [function] [call site] 00037
9 event_deferred_cb_cancel_ [function] [call site] 00038
10 event_callback_cancel_ [function] [call site] 00039
11 event_callback_cancel_nolock_ [function] [call site] 00040
12 event_del_nolock_ [function] [call site] 00041
13 event_debugx_ [function] [call site] 00042
14 event_logv_ [function] [call site] 00043
13 min_heap_top_ [function] [call site] 00044
13 event_queue_remove_timeout [function] [call site] 00045
14 is_common_timeout [function] [call site] 00046
14 get_common_timeout_list [function] [call site] 00047
14 min_heap_erase_ [function] [call site] 00048
15 min_heap_shift_up_unconditional_ [function] [call site] 00049
15 min_heap_shift_down_ [function] [call site] 00050
13 event_queue_remove_active [function] [call site] 00051
13 event_queue_remove_active_later [function] [call site] 00052
13 event_queue_remove_inserted [function] [call site] 00053
13 evmap_io_del_ [function] [call site] 00054
13 evmap_signal_del_ [function] [call site] 00055
13 event_haveevents [function] [call site] 00056
13 evthread_notify_base [function] [call site] 00057
13 event_debug_note_del_ [function] [call site] 00058
14 event_debug_map_HT_FIND [function] [call site] 00059
15 event_debug_map_HT_FIND_P_ [function] [call site] 00060
16 hash_debug_entry [function] [call site] 00061
16 eq_debug_entry [function] [call site] 00062
14 event_errx [function] [call site] 00063
15 event_logv_ [function] [call site] 00064
15 event_exit [function] [call site] 00065
16 exit [call site] 00066
16 abort [call site] 00067
16 exit [call site] 00068
12 event_queue_remove_active [function] [call site] 00069
12 event_queue_remove_active_later [function] [call site] 00070
9 event_mm_free_ [function] [call site] 00071
2 evbuffer_chain_should_realign [function] [call site] 00072
2 evbuffer_chain_align [function] [call site] 00073
2 evbuffer_chain_new_membuf [function] [call site] 00074
2 evbuffer_chain_insert [function] [call site] 00075
2 evbuffer_invoke_callbacks_ [function] [call site] 00076
3 event_deferred_cb_schedule_ [function] [call site] 00077
4 event_callback_activate_later_nolock_ [function] [call site] 00078
5 event_queue_insert_active_later [function] [call site] 00079
5 evthread_notify_base [function] [call site] 00080
4 event_callback_activate_nolock_ [function] [call site] 00081
5 event_queue_remove_active_later [function] [call site] 00082
5 event_queue_insert_active [function] [call site] 00083
5 evthread_notify_base [function] [call site] 00084
3 evbuffer_incref_and_lock_ [function] [call site] 00085
3 bufferevent_incref [function] [call site] 00086
3 evbuffer_run_callbacks [function] [call site] 00087
1 evbuffer_readln [function] [call site] 00088
2 evbuffer_search_eol [function] [call site] 00089
3 evbuffer_find_eol_char [function] [call site] 00090
4 find_eol_char [function] [call site] 00091
5 memchr [call site] 00092
5 memchr [call site] 00093
3 evbuffer_strspn [function] [call site] 00094
3 evbuffer_search [function] [call site] 00095
4 evbuffer_search_range [function] [call site] 00096
5 memchr [call site] 00097
5 evbuffer_ptr_memcmp [function] [call site] 00098
6 memcmp [call site] 00099
3 evbuffer_strchr [function] [call site] 00100
4 memchr [call site] 00101
3 evbuffer_ptr_subtract [function] [call site] 00102
4 evbuffer_ptr_set [function] [call site] 00103
3 evbuffer_getchr [function] [call site] 00104
3 evbuffer_strchr [function] [call site] 00105
3 evbuffer_strchr [function] [call site] 00106
2 event_mm_malloc_ [function] [call site] 00107
2 event_warn [function] [call site] 00108
2 evbuffer_remove [function] [call site] 00109
3 evbuffer_copyout_from [function] [call site] 00110
3 evbuffer_drain [function] [call site] 00111
4 HAS_PINNED_R [function] [call site] 00112
4 evbuffer_chain_free [function] [call site] 00113
4 ZERO_CHAIN [function] [call site] 00114
4 evbuffer_chain_free [function] [call site] 00115
4 evbuffer_invoke_callbacks_ [function] [call site] 00116
2 evbuffer_drain [function] [call site] 00117
1 evbuffer_new [function] [call site] 00118
1 evbuffer_new [function] [call site] 00119
1 evbuffer_add [function] [call site] 00120
1 evbuffer_add_reference [function] [call site] 00121
2 evbuffer_add_reference_with_offset [function] [call site] 00122
3 evbuffer_chain_new [function] [call site] 00123
3 event_mm_free_ [function] [call site] 00124
3 evbuffer_chain_insert [function] [call site] 00125
3 evbuffer_invoke_callbacks_ [function] [call site] 00126
1 evbuffer_add_buffer [function] [call site] 00127
2 PRESERVE_PINNED [function] [call site] 00128
3 HAS_PINNED_R [function] [call site] 00129
3 evbuffer_chain_new_membuf [function] [call site] 00130
2 evbuffer_free_all_chains [function] [call site] 00131
2 COPY_CHAIN [function] [call site] 00132
2 APPEND_CHAIN [function] [call site] 00133
3 evbuffer_free_trailing_empty_chains [function] [call site] 00134
2 RESTORE_PINNED [function] [call site] 00135
3 ZERO_CHAIN [function] [call site] 00136
2 evbuffer_invoke_callbacks_ [function] [call site] 00137
2 evbuffer_invoke_callbacks_ [function] [call site] 00138
1 evbuffer_expand [function] [call site] 00139
2 evbuffer_expand_singlechain [function] [call site] 00140
3 evbuffer_chain_should_realign [function] [call site] 00141
3 evbuffer_chain_align [function] [call site] 00142
3 evbuffer_chain_new_membuf [function] [call site] 00143
3 evbuffer_chain_free [function] [call site] 00144
3 evbuffer_chain_insert_new [function] [call site] 00145
1 evbuffer_pullup [function] [call site] 00146
2 evbuffer_chain_new_membuf [function] [call site] 00147
2 event_warn [function] [call site] 00148
2 evbuffer_chain_free [function] [call site] 00149
1 evbuffer_prepend [function] [call site] 00150
2 evbuffer_chain_insert_new [function] [call site] 00151
2 evbuffer_chain_new_membuf [function] [call site] 00152
2 evbuffer_invoke_callbacks_ [function] [call site] 00153
1 evbuffer_prepend_buffer [function] [call site] 00154
2 PRESERVE_PINNED [function] [call site] 00155
2 evbuffer_free_all_chains [function] [call site] 00156
2 COPY_CHAIN [function] [call site] 00157
2 PREPEND_CHAIN [function] [call site] 00158
2 RESTORE_PINNED [function] [call site] 00159
2 evbuffer_invoke_callbacks_ [function] [call site] 00160
2 evbuffer_invoke_callbacks_ [function] [call site] 00161
1 evbuffer_find [function] [call site] 00162
2 evbuffer_search [function] [call site] 00163
2 evbuffer_pullup [function] [call site] 00164
1 evbuffer_commit_space [function] [call site] 00165
2 advance_last_with_data [function] [call site] 00166
2 evbuffer_invoke_callbacks_ [function] [call site] 00167
1 evbuffer_add_buffer_reference [function] [call site] 00168
2 evbuffer_free_all_chains [function] [call site] 00169
2 APPEND_CHAIN_MULTICAST [function] [call site] 00170
3 evbuffer_chain_new [function] [call site] 00171
3 event_warn [function] [call site] 00172
3 evbuffer_incref_ [function] [call site] 00173
3 evbuffer_chain_incref [function] [call site] 00174
3 evbuffer_chain_insert [function] [call site] 00175
2 evbuffer_invoke_callbacks_ [function] [call site] 00176
1 evbuffer_remove_buffer [function] [call site] 00177
2 evbuffer_add_buffer [function] [call site] 00178
2 evbuffer_free_trailing_empty_chains [function] [call site] 00179
2 advance_last_with_data [function] [call site] 00180
2 evbuffer_add [function] [call site] 00181
2 evbuffer_invoke_callbacks_ [function] [call site] 00182
2 evbuffer_invoke_callbacks_ [function] [call site] 00183
1 evbuffer_free [function] [call site] 00184
2 evbuffer_decref_and_unlock_ [function] [call site] 00185
1 evbuffer_free [function] [call site] 00186
1 evbuffer_free [function] [call site] 00187