systemd fails to build because all its fuzz targets time out and bad_build_check fails (when it's built with AFL)

[evverx]

My guess would be that it regressed when AFL was updated in #13968.

https://oss-fuzz-build-logs.storage.googleapis.com/log-0a3ca49a-6368-4257-8a79-d9223cd92d48.txt

Step #4 - "build-check-afl-address-x86_64": ERROR: 100.0% of fuzz targets seem to be broken. See the list above for a detailed information.
Step #4 - "build-check-afl-address-x86_64": ********************************************************************************
Step #4 - "build-check-afl-address-x86_64": Build checks failed.

Here's what fuzz-dns-packet failures look like:

Step #4 - "build-check-afl-address-x86_64": BAD BUILD: fuzzing /tmp/not-out/tmp3joxpek0/fuzz-dns-packet with afl-fuzz failed.
Step #4 - "build-check-afl-address-x86_64": vm.mmap_rnd_bits = 28
Step #4 - "build-check-afl-address-x86_64": afl++ setup:
Step #4 - "build-check-afl-address-x86_64": AFL_SKIP_CPUFREQ=1
Step #4 - "build-check-afl-address-x86_64": AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES=1
Step #4 - "build-check-afl-address-x86_64": AFL_TRY_AFFINITY=1
Step #4 - "build-check-afl-address-x86_64": AFL_IGNORE_UNKNOWN_ENVS=1
Step #4 - "build-check-afl-address-x86_64": AFL_FUZZER_ARGS=-m none -t 5000+
Step #4 - "build-check-afl-address-x86_64": AFL_CMPLOG_ONLY_NEW=1
Step #4 - "build-check-afl-address-x86_64": AFL_FAST_CAL=1
Step #4 - "build-check-afl-address-x86_64": AFL_NO_UI=1
Step #4 - "build-check-afl-address-x86_64": AFL_IGNORE_PROBLEMS=1
Step #4 - "build-check-afl-address-x86_64": AFL_FORKSRV_INIT_TMOUT=30000
Step #4 - "build-check-afl-address-x86_64": AFL_IGNORE_UNKNOWN_ENVS=1
Step #4 - "build-check-afl-address-x86_64": AFL_QUIET=1
Step #4 - "build-check-afl-address-x86_64": AFL_IGNORE_PROBLEMS=1
Step #4 - "build-check-afl-address-x86_64": /tmp/not-out/tmp3joxpek0/afl-fuzz -m none -t 5000+ -i /tmp/fuzz-dns-packet_corpus -o /tmp/fuzz-dns-packet_afl_address_out -- /tmp/not-out/tmp3joxpek0/fuzz-dns-packet
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_SKIP_CPUFREQ with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_TRY_AFFINITY with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_CMPLOG_ONLY_NEW with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_FAST_CAL with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_NO_UI with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_IGNORE_PROBLEMS with value 1�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable AFL_FORKSRV_INIT_TMOUT with value 30000�[0m
Step #4 - "build-check-afl-address-x86_64": �[0;36mafl-fuzz++4.34a�[0m based on afl by Michal Zalewski and a large online community
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mAFL++ is maintained by Marc "van Hauser" Heuse, Dominik Maier, Andrea Fioraldi and Heiko "hexcoder" Eißfeldt�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mAFL++ is open source, get it at https://github.com/AFLplusplus/AFLplusplus�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mNOTE: AFL++ >= v3 has changed defaults and behaviours - see README.md�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable ASAN_OPTIONS with value alloc_dealloc_mismatch=0:allocator_may_return_null=1:allocator_release_to_os_interval_ms=500:check_malloc_usable_size=0:detect_container_overflow=1:detect_odr_violation=0:detect_leaks=1:detect_stack_use_after_return=1:fast_unwind_on_fatal=0:handle_abort=1:handle_segv=1:handle_sigill=1:max_uar_stack_size_log=16:print_scariness=1:quarantine_size_mb=10:strict_memcmp=1:strip_path_prefix=/workspace/:symbolize=1:use_sigaltstack=1:dedup_token_length=3:abort_on_error=1:symbolize=0:detect_odr_violation=0:�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled environment variable MSAN_OPTIONS with value print_stats=1:strip_path_prefix=/workspace/:symbolize=1:dedup_token_length=3:exit_code=86:symbolize=0�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mNo -M/-S set, autoconfiguring for "-S default"�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mGetting to work...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mUsing exploration-based constant power schedule (EXPLORE)�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mEnabled testcache with 50 MB�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mGenerating fuzz data with a length of min=1 max=1048576�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mChecking core_pattern...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mDisabling the UI because AFL_NO_UI is set.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mYou have 32 CPU cores and 2 runnable tasks (utilization: 6%).�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mTry parallel jobs - see docs/fuzzing_in_depth.md#c-using-multiple-cores�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mSetting up output directories...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mChecking CPU core loadout...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mFound a free CPU core, try binding to #0.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mValidating target binary...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mScanning '/tmp/fuzz-dns-packet_corpus'...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mCreating hard links for all input files...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mLoaded a total of 1 seeds.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mSpinning up the fork server...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;92m[+] �[0mAll right - new fork server model v1 is up.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mTarget map size: 114418�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mUsing SHARED MEMORY FUZZING feature.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mNo auto-generated dictionary tokens to reuse.�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;94m[*] �[0mAttempting dry run with 'id:000000,time:0,execs:0,orig:input'...�[0m
Step #4 - "build-check-afl-address-x86_64": �[1;93m[!] �[1;97mWARNING: �[0mTest case results in a timeout (skipping)�[0m
Step #4 - "build-check-afl-address-x86_64": �[?25h�[0m�[1;91m
Step #4 - "build-check-afl-address-x86_64": [-] PROGRAM ABORT : �[0mAll test cases time out or crash, giving up!�[1;91m
Step #4 - "build-check-afl-address-x86_64":          Location : �[0mperform_dry_run(), src/afl-fuzz-init.c:1413
Step #4 - "build-check-afl-address-x86_64": 
Step #4 - "build-check-afl-address-x86_64": 

[evverx]

The other projects I took a look at are fine so I'm guessing it's because the fuzz targets are linked against all that libsystemd stuff dynamically. I'm not 100% sure yet though.