Fuzz introspector: fuzz_libunwind
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
33 309 _ULx86_64_access_reg call site: 00309 eval_location_expr
25 356 _ULx86_64_step call site: 00356 _unw_step_fallback
14 267 run_cfi_program call site: 00267 dwarf_read_sleb128
12 343 apply_reg_state call site: 00343 _ULx86_64_stash_frame
11 16 unw_init_page_size call site: 00016 __errno_location
9 227 read_regnum call site: 00227 _ULx86_64_dwarf_read_encoded_pointer
9 238 run_cfi_program call site: 00238 push_rstate_stack
6 86 get_rs_cache call site: 00086 syscall
6 163 _UIx86_64__mempool_alloc call site: 00163 pthread_mutex_unlock
5 32 expand call site: 00032 _UIx86_64__sos_alloc
5 176 _ULx86_64_dwarf_find_proc_info call site: 00176 dwarf_find_eh_frame_section
5 194 _Uelf64_find_section call site: 00194 linear_search

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 dispatch [function] [call site] 00001
2 recurse1 [function] [call site] 00002
3 get_proc_name [function] [call site] 00003
4 _Ux86_64_getcontext [call site] 00004
4 _ULx86_64_init_local [function] [call site] 00005
5 unw_init_local_common [function] [call site] 00006
6 _ULx86_64_init [function] [call site] 00007
7 sigfillset [call site] 00008
7 pthread_sigmask [call site] 00009
7 sigprocmask [call site] 00010
7 pthread_mutex_lock [call site] 00011
7 sigfillset [call site] 00012
7 _UIx86_64_mi_init [function] [call site] 00013
8 unw_init_page_size [function] [call site] 00014
9 __errno_location [call site] 00015
9 sysconf [call site] 00016
9 __errno_location [call site] 00017
9 strlen [call site] 00018
9 write [call site] 00019
9 __errno_location [call site] 00020
9 strerror [call site] 00021
9 strlen [call site] 00022
9 write [call site] 00023
9 strlen [call site] 00024
9 write [call site] 00025
9 strlen [call site] 00026
9 write [call site] 00027
7 _Ux86_64_dwarf_init [function] [call site] 00028
8 _UIx86_64__mempool_init [function] [call site] 00029
9 pthread_mutex_init [call site] 00030
9 expand [function] [call site] 00031
10 syscall [call site] 00032
10 syscall [call site] 00033
10 _UIx86_64__sos_alloc [function] [call site] 00034
11 __assert_fail [call site] 00035
11 __assert_fail [call site] 00036
11 __assert_fail [call site] 00037
10 add_memory [function] [call site] 00038
11 free_object [function] [call site] 00039
8 _UIx86_64__mempool_init [function] [call site] 00040
7 _ULx86_64_local_addr_space_init [function] [call site] 00041
8 _Ux86_64_flush_cache [function] [call site] 00042
9 syscall [call site] 00043
9 syscall [call site] 00044
9 syscall [call site] 00045
7 pthread_mutex_unlock [call site] 00046
7 pthread_sigmask [call site] 00047
7 sigprocmask [call site] 00048
6 dwarf_build_as_arg [function] [call site] 00049
7 __assert_fail [call site] 00050
6 common_init [function] [call site] 00051
7 dwarf_get_uc [function] [call site] 00052
8 __assert_fail [call site] 00053
7 dwarf_get_uc [function] [call site] 00054
7 dwarf_get_uc [function] [call site] 00055
7 dwarf_get_uc [function] [call site] 00056
7 dwarf_get_uc [function] [call site] 00057
7 dwarf_get_uc [function] [call site] 00058
7 dwarf_get_uc [function] [call site] 00059
7 dwarf_get_uc [function] [call site] 00060
7 dwarf_get_uc [function] [call site] 00061
7 dwarf_get_uc [function] [call site] 00062
7 dwarf_get_uc [function] [call site] 00063
7 dwarf_get_uc [function] [call site] 00064
7 dwarf_get_uc [function] [call site] 00065
7 dwarf_get_uc [function] [call site] 00066
7 dwarf_get_uc [function] [call site] 00067
7 dwarf_get_uc [function] [call site] 00068
7 dwarf_get_uc [function] [call site] 00069
7 dwarf_get [function] [call site] 00070
8 __assert_fail [call site] 00071
7 dwarf_get_uc [function] [call site] 00072
7 _ULx86_64_r_uc_addr [function] [call site] 00073
7 dwarf_get [function] [call site] 00074
4 _ULx86_64_step [function] [call site] 00075
5 dwarf_get_validate [function] [call site] 00076
6 __assert_fail [call site] 00077
5 dwarf_set_validate [function] [call site] 00078
6 __assert_fail [call site] 00079
5 _ULx86_64_dwarf_step [function] [call site] 00080
6 find_reg_state [function] [call site] 00081
7 get_rs_cache [function] [call site] 00082
8 pthread_sigmask [call site] 00083
8 sigprocmask [call site] 00084
8 pthread_mutex_lock [call site] 00085
8 _ULx86_64_dwarf_flush_rs_cache [function] [call site] 00086
9 syscall [call site] 00087
9 syscall [call site] 00088
9 syscall [call site] 00089
9 syscall [call site] 00090
9 syscall [call site] 00091
9 syscall [call site] 00092
7 rs_lookup [function] [call site] 00093
8 cache_match [function] [call site] 00094
8 hash [function] [call site] 00095
8 cache_match [function] [call site] 00096
7 put_rs_cache [function] [call site] 00097
8 __assert_fail [call site] 00098
8 pthread_mutex_unlock [call site] 00099
8 pthread_sigmask [call site] 00100
8 sigprocmask [call site] 00101
7 __assert_fail [call site] 00102
7 fetch_proc_info [function] [call site] 00103
8 _ULx86_64_Ifind_dynamic_proc_info [function] [call site] 00104
9 local_find_proc_info [function] [call site] 00105
10 _U_dyn_info_list_addr [function] [call site] 00106
10 _ULx86_64_Iextract_dynamic_proc_info [function] [call site] 00107
11 _ULx86_64_dwarf_search_unwind_table [function] [call site] 00108
12 is_remote_table [function] [call site] 00109
12 __assert_fail [call site] 00110
12 __assert_fail [call site] 00111
12 is_remote_table [function] [call site] 00112
12 __assert_fail [call site] 00113
12 _Ux86_64_get_accessors [function] [call site] 00114
13 _ULx86_64_init [function] [call site] 00115
12 lookup64 [function] [call site] 00116
12 lookup [function] [call site] 00117
12 _ULx86_64_dwarf_extract_proc_info_from_fde [function] [call site] 00118
13 dwarf_readu32 [function] [call site] 00119
13 dwarf_reads32 [function] [call site] 00120
13 is_cie_id [function] [call site] 00121
13 dwarf_readu64 [function] [call site] 00122
13 dwarf_reads64 [function] [call site] 00123
13 is_cie_id [function] [call site] 00124
13 parse_cie [function] [call site] 00125
14 dwarf_readu32 [function] [call site] 00126
14 dwarf_readu32 [function] [call site] 00127
14 dwarf_readu64 [function] [call site] 00128
14 dwarf_readu64 [function] [call site] 00129
14 dwarf_readu8 [function] [call site] 00130
14 dwarf_readu8 [function] [call site] 00131
14 dwarf_readu8 [function] [call site] 00132
14 dwarf_readu8 [function] [call site] 00133
14 dwarf_read_uleb128 [function] [call site] 00134
15 dwarf_readu8 [function] [call site] 00135
14 dwarf_read_sleb128 [function] [call site] 00136
15 dwarf_readu8 [function] [call site] 00137
14 dwarf_readu8 [function] [call site] 00138
14 dwarf_read_uleb128 [function] [call site] 00139
14 dwarf_read_uleb128 [function] [call site] 00140
14 dwarf_readu8 [function] [call site] 00141
14 dwarf_readu8 [function] [call site] 00142
14 dwarf_readu8 [function] [call site] 00143
14 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00144
15 dwarf_readw [function] [call site] 00145
16 dwarf_readu64 [function] [call site] 00146
15 dwarf_read_uleb128 [function] [call site] 00147
15 dwarf_readu16 [function] [call site] 00148
15 dwarf_readu32 [function] [call site] 00149
15 dwarf_readu64 [function] [call site] 00150
15 dwarf_reads16 [function] [call site] 00151
15 dwarf_reads32 [function] [call site] 00152
15 dwarf_reads64 [function] [call site] 00153
13 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00154
13 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00155
13 dwarf_read_uleb128 [function] [call site] 00156
13 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00157
13 _UIx86_64__mempool_alloc [function] [call site] 00158
14 pthread_sigmask [call site] 00159
14 sigprocmask [call site] 00160
14 pthread_mutex_lock [call site] 00161
14 expand [function] [call site] 00162
14 __assert_fail [call site] 00163
14 pthread_mutex_unlock [call site] 00164
14 pthread_sigmask [call site] 00165
14 sigprocmask [call site] 00166
13 dwarf_readu16 [function] [call site] 00167
13 dwarf_readu16 [function] [call site] 00168
9 remote_find_proc_info [function] [call site] 00169
8 _ULx86_64_dwarf_find_proc_info [function] [call site] 00170
9 _ULx86_64_Iiterate_phdr_for_ip [function] [call site] 00171
10 pthread_sigmask [call site] 00172
10 sigprocmask [call site] 00173
10 pthread_sigmask [call site] 00174
10 sigprocmask [call site] 00175
9 _ULx86_64_dwarf_callback [function] [call site] 00176
10 dwarf_find_eh_frame_section [function] [call site] 00177
11 strlen [call site] 00178
11 _Ux86_64_get_exe_image_path [function] [call site] 00179
12 strcpy [call site] 00180
11 elf_map_image [function] [call site] 00181
12 open [call site] 00182
12 fstat [call site] 00183
12 close [call site] 00184
12 syscall [call site] 00185
12 close [call site] 00186
12 _Uelf64_valid_object [function] [call site] 00187
13 memcmp [call site] 00188
12 syscall [call site] 00189
11 _Uelf64_find_section [function] [call site] 00190
12 _Uelf64_valid_object [function] [call site] 00191
12 _Uelf64_section_table [function] [call site] 00192
12 _Uelf64_string_table [function] [call site] 00193
12 strcmp [call site] 00194
11 syscall [call site] 00195
10 linear_search [function] [call site] 00196
11 _Ux86_64_get_accessors [function] [call site] 00197
11 _ULx86_64_dwarf_extract_proc_info_from_fde [function] [call site] 00198
11 _ULx86_64_dwarf_extract_proc_info_from_fde [function] [call site] 00199
10 _Ux86_64_get_accessors [function] [call site] 00200
10 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00201
10 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00202
10 abort [call site] 00203
10 linear_search [function] [call site] 00204
10 __assert_fail [call site] 00205
9 _ULx86_64_dwarf_search_unwind_table [function] [call site] 00206
9 _ULx86_64_dwarf_search_unwind_table [function] [call site] 00207
8 _ULx86_64_fetch_frame [function] [call site] 00208
9 __assert_fail [call site] 00209
9 __assert_fail [call site] 00210
7 __assert_fail [call site] 00211
7 create_state_record_for [function] [call site] 00212
8 setup_fde [function] [call site] 00213
9 __assert_fail [call site] 00214
9 set_reg [function] [call site] 00215
9 set_reg [function] [call site] 00216
9 run_cfi_program [function] [call site] 00217
10 _Ux86_64_get_accessors [function] [call site] 00218
10 dwarf_readu8 [function] [call site] 00219
10 dwarf_readu8 [function] [call site] 00220
10 dwarf_readu16 [function] [call site] 00221
10 dwarf_readu32 [function] [call site] 00222
10 dwarf_read_uleb128 [function] [call site] 00223
10 set_savedreg [function] [call site] 00224
11 set_reg [function] [call site] 00225
10 read_regnum [function] [call site] 00226
11 dwarf_read_uleb128 [function] [call site] 00227
10 dwarf_read_uleb128 [function] [call site] 00228
10 set_savedreg [function] [call site] 00229
10 read_regnum [function] [call site] 00230
10 dwarf_read_sleb128 [function] [call site] 00231
10 set_savedreg [function] [call site] 00232
10 restore_savedreg [function] [call site] 00233
10 dwarf_read_uleb128 [function] [call site] 00234
10 restore_savedreg [function] [call site] 00235
10 _ULx86_64_dwarf_read_encoded_pointer [function] [call site] 00236
10 read_regnum [function] [call site] 00237
10 set_savedreg [function] [call site] 00238
10 read_regnum [function] [call site] 00239
10 set_savedreg [function] [call site] 00240
10 read_regnum [function] [call site] 00241
10 dwarf_read_uleb128 [function] [call site] 00242
10 set_savedreg [function] [call site] 00243
10 push_rstate_stack [function] [call site] 00244
11 _UIx86_64__mempool_alloc [function] [call site] 00245
10 pop_rstate_stack [function] [call site] 00246
11 _UIx86_64__mempool_free [function] [call site] 00247
12 pthread_sigmask [call site] 00248
12 sigprocmask [call site] 00249
12 pthread_mutex_lock [call site] 00250
12 free_object [function] [call site] 00251
12 pthread_mutex_unlock [call site] 00252
12 pthread_sigmask [call site] 00253
12 sigprocmask [call site] 00254
10 read_cfa_regnum [function] [call site] 00255
11 dwarf_read_uleb128 [function] [call site] 00256
10 dwarf_read_uleb128 [function] [call site] 00257
10 set_reg [function] [call site] 00258
10 set_reg [function] [call site] 00259
10 read_cfa_regnum [function] [call site] 00260
10 dwarf_read_sleb128 [function] [call site] 00261
10 set_reg [function] [call site] 00262
10 set_reg [function] [call site] 00263
10 read_cfa_regnum [function] [call site] 00264
10 set_reg [function] [call site] 00265
10 dwarf_read_uleb128 [function] [call site] 00266
10 set_reg [function] [call site] 00267
10 dwarf_read_sleb128 [function] [call site] 00268
10 set_reg [function] [call site] 00269
10 set_reg [function] [call site] 00270
10 dwarf_read_uleb128 [function] [call site] 00271
10 read_regnum [function] [call site] 00272
10 set_savedreg [function] [call site] 00273
10 dwarf_read_uleb128 [function] [call site] 00274
10 read_regnum [function] [call site] 00275
10 set_savedreg [function] [call site] 00276
10 dwarf_read_uleb128 [function] [call site] 00277
10 dwarf_read_uleb128 [function] [call site] 00278
10 read_regnum [function] [call site] 00279
10 dwarf_read_uleb128 [function] [call site] 00280
10 set_savedreg [function] [call site] 00281
9 empty_rstate_stack [function] [call site] 00282
10 pop_rstate_stack [function] [call site] 00283
8 parse_fde [function] [call site] 00284
9 run_cfi_program [function] [call site] 00285
9 empty_rstate_stack [function] [call site] 00286
8 parse_dynamic [function] [call site] 00287
7 put_unwind_info [function] [call site] 00288
8 _ULx86_64_Iput_dynamic_unwind_info [function] [call site] 00289
9 _ULx86_64_dwarf_put_unwind_info [function] [call site] 00290
8 _UIx86_64__mempool_free [function] [call site] 00291
7 get_rs_cache [function] [call site] 00292
7 rs_lookup [function] [call site] 00293
7 rs_new [function] [call site] 00294
8 hash [function] [call site] 00295
8 hash [function] [call site] 00296
8 _ULx86_64_cache_frame [function] [call site] 00297
7 _ULx86_64_cache_frame [function] [call site] 00298
7 _ULx86_64_reuse_frame [function] [call site] 00299
7 __assert_fail [call site] 00300
7 _ULx86_64_reuse_frame [function] [call site] 00301
7 put_rs_cache [function] [call site] 00302
6 apply_reg_state [function] [call site] 00303
7 _Ux86_64_get_accessors [function] [call site] 00304
7 _ULx86_64_get_reg [function] [call site] 00305
8 _ULx86_64_access_reg [function] [call site] 00306
9 dwarf_put [function] [call site] 00307
10 __assert_fail [call site] 00308
9 dwarf_get [function] [call site] 00309
7 __assert_fail [call site] 00310
7 eval_location_expr [function] [call site] 00311
8 dwarf_read_uleb128 [function] [call site] 00312
8 _ULx86_64_dwarf_eval_expr [function] [call site] 00313
9 _Ux86_64_get_accessors [function] [call site] 00314
9 dwarf_readu8 [function] [call site] 00315
9 read_operand [function] [call site] 00316
10 dwarf_readu8 [function] [call site] 00317
10 dwarf_readu16 [function] [call site] 00318
10 dwarf_readu32 [function] [call site] 00319
10 dwarf_readu64 [function] [call site] 00320
10 dwarf_read_uleb128 [function] [call site] 00321
10 dwarf_read_sleb128 [function] [call site] 00322
9 read_operand [function] [call site] 00323
9 _ULx86_64_get_reg [function] [call site] 00324
9 _ULx86_64_get_reg [function] [call site] 00325
9 dwarf_readw [function] [call site] 00326
9 dwarf_readu8 [function] [call site] 00327
9 dwarf_readu16 [function] [call site] 00328
9 dwarf_readu32 [function] [call site] 00329
9 dwarf_readu64 [function] [call site] 00330
9 sword [function] [call site] 00331
9 sword [function] [call site] 00332
9 sword [function] [call site] 00333
9 sword [function] [call site] 00334
9 sword [function] [call site] 00335
9 sword [function] [call site] 00336
9 sword [function] [call site] 00337
9 sword [function] [call site] 00338
8 dwarf_get_uc [function] [call site] 00339
8 _ULx86_64_r_uc_addr [function] [call site] 00340
7 eval_location_expr [function] [call site] 00341
7 eval_location_expr [function] [call site] 00342
7 dwarf_get [function] [call site] 00343
7 _ULx86_64_stash_frame [function] [call site] 00344
8 _ULx86_64_dwarf_stack_aligned [function] [call site] 00345
9 _Ux86_64_get_accessors [function] [call site] 00346
9 dwarf_read_uleb128 [function] [call site] 00347
9 dwarf_readu8 [function] [call site] 00348
9 read_operand [function] [call site] 00349
9 dwarf_read_uleb128 [function] [call site] 00350
9 dwarf_readu8 [function] [call site] 00351
9 read_operand [function] [call site] 00352
9 dwarf_readu8 [function] [call site] 00353
8 __assert_fail [call site] 00354
8 __assert_fail [call site] 00355
5 dwarf_set_validate [function] [call site] 00356
5 dwarf_get_validate [function] [call site] 00357
5 dwarf_set_validate [function] [call site] 00358
5 _unw_step_fallback [function] [call site] 00359
6 _ULx86_64_os_step [function] [call site] 00360
7 is_vsyscall [function] [call site] 00361
6 _ULx86_64_is_signal_frame [function] [call site] 00362
6 _ULx86_64_handle_signal_frame [function] [call site] 00363
6 dwarf_get [function] [call site] 00364
6 _is_plt_entry [function] [call site] 00365
7 _Ux86_64_get_accessors [function] [call site] 00366
6 dwarf_get [function] [call site] 00367
6 dwarf_get [function] [call site] 00368
6 dwarf_get [function] [call site] 00369
6 _try_rip_fixup [function] [call site] 00370
7 dwarf_get [function] [call site] 00371
7 dwarf_get [function] [call site] 00372
7 dwarf_get [function] [call site] 00373
7 dwarf_get [function] [call site] 00374
7 dwarf_get [function] [call site] 00375
6 _try_rbp_frame_walk [function] [call site] 00376
7 dwarf_get [function] [call site] 00377
7 dwarf_get [function] [call site] 00378
7 dwarf_get [function] [call site] 00379
7 dwarf_get [function] [call site] 00380
5 dwarf_set_validate [function] [call site] 00381
4 _ULx86_64_get_proc_name [function] [call site] 00382
5 _ULx86_64_get_proc_name_by_ip [function] [call site] 00383
6 _Ux86_64_get_accessors [function] [call site] 00384
6 _ULx86_64_Ifind_dynamic_proc_info [function] [call site] 00385
6 intern_string [function] [call site] 00386
7 fetch8 [function] [call site] 00387
6 _ULx86_64_Iput_dynamic_unwind_info [function] [call site] 00388
3 dispatch [function] [call site] 00389
4 recurse2 [function] [call site] 00390
5 get_random_reg [function] [call site] 00391
6 _Ux86_64_getcontext [call site] 00392
6 _ULx86_64_init_local [function] [call site] 00393
6 _ULx86_64_step [function] [call site] 00394
6 _ULx86_64_get_reg [function] [call site] 00395
5 dispatch [function] [call site] 00396
6 recurse3 [function] [call site] 00397
7 check_is_signal [function] [call site] 00398
8 _Ux86_64_getcontext [call site] 00399
8 _ULx86_64_init_local [function] [call site] 00400
8 _ULx86_64_step [function] [call site] 00401
8 _ULx86_64_is_signal_frame [function] [call site] 00402
7 dispatch [function] [call site] 00403
8 recurse4 [function] [call site] 00404
9 get_save_loc [function] [call site] 00405
10 _Ux86_64_getcontext [call site] 00406
10 _ULx86_64_init_local [function] [call site] 00407
10 _ULx86_64_step [function] [call site] 00408
10 _ULx86_64_get_save_loc [function] [call site] 00409
9 dispatch [function] [call site] 00410