init_forkserver() crash

[jonahmvp]

Ran LightFTP tutorial exactly as described to fuzz with AFLNet on WSL2 Kali Linux with docker desktop wsl integration. Running into the following error. Wondering if this issue is happening on anyone else's end.

Command:
profuzzbench_exec_common.sh lightftp 1 results-lightftp aflnet out-lightftp-aflnet "-P FTP -D 10000 -q 3 -s 3 -K" 60 5

Docker logs:

/home/ubuntu/experiments/LightFTP/Source/Release
out-lightftp-aflnet
afl-fuzz 2.56b by lcamtuf@google.com
[+] You have 4 CPU cores and 6 runnable tasks (utilization: 150%).
[!] WARNING: Not binding to a CPU core (AFL_NO_AFFINITY set).
[] Checking core_pattern...
[] Setting up output directories...
[] Scanning '/home/ubuntu/experiments/in-ftp'...
[+] No auto-generated dictionary tokens to reuse.
[] Creating hard links for all input files...
[] Loading extra dictionary from '/home/ubuntu/experiments/ftp.dict' (level 0)...
[+] Loaded 32 extra tokens, size range 3 B to 4 B.
[] Validating target binary...
[] Attempting dry run with 'id:000000,orig:ftp_requests_full_anonymous.raw'...
[] Spinning up the fork server...

[-] Whoops, the target binary crashed suddenly, before receiving any input
    from the fuzzer! Since it seems to be built with ASAN and you have a
    restrictive memory limit configured, this is expected; please read
    docs/notes_for_asan.txt for help.
�
[-] PROGRAM ABORT : Fork server crashed with signal 6
         Location : init_forkserver(), afl-fuzz.c:3064

rm: cannot remove '/home/ubuntu/experiments/LightFTP/Source/Release/out-lightftp-aflnet/cov_over_time.csv': No such file or directory
rm: cannot remove '/home/ubuntu/fftplog': No such file or directory
stat: cannot stat '/home/ubuntu/experiments/LightFTP/Source/Release/out-lightftp-aflnet//replayable-queue/.raw': No such file or directory
rm: cannot remove '/home/ubuntu/fftplog': No such file or directory
/home/ubuntu/experiments/cov_script: line 40:    39 Segmentation fault      $replayer $f FTP $pno 1 > /dev/null 2>&1
stat: cannot stat '/home/ubuntu/experiments/LightFTP/Source/Release/out-lightftp-aflnet//replayable-queue/id': No such file or directory
/home/ubuntu/experiments/cov_script: line 62:    91 Segmentation fault      $replayer $f FTP $pno 1 > /dev/null 2>&1
stat: cannot stat '/home/ubuntu/experiments/LightFTP/Source/Release/out-lightftp-aflnet//replayable-queue/id*': No such file or directory
out-lightftp-aflnet/
out-lightftp-aflnet/replayable-crashes/
out-lightftp-aflnet/replayable-hangs/
out-lightftp-aflnet/replayable-new-ipsm-paths/
out-lightftp-aflnet/replayable-queue/
out-lightftp-aflnet/.cur_input
out-lightftp-aflnet/cov_over_time.csv
out-lightftp-aflnet/regions/
out-lightftp-aflnet/regions/ftp_requests_full_anonymous.raw
out-lightftp-aflnet/regions/ftp_requests_full_normal.raw
out-lightftp-aflnet/cov_html/
out-lightftp-aflnet/cov_html/index.x_malloc.c.html
out-lightftp-aflnet/cov_html/index.ftpserv.c.html
out-lightftp-aflnet/cov_html/index.main.c.html
out-lightftp-aflnet/cov_html/index.cfgparse.c.html
out-lightftp-aflnet/cov_html/index.html
out-lightftp-aflnet/plot_data
out-lightftp-aflnet/queue/
out-lightftp-aflnet/queue/id:000000,orig:ftp_requests_full_anonymous.raw
out-lightftp-aflnet/queue/id:000001,orig:ftp_requests_full_normal.raw
out-lightftp-aflnet/queue/.state/
out-lightftp-aflnet/queue/.state/variable_behavior/
out-lightftp-aflnet/queue/.state/redundant_edges/
out-lightftp-aflnet/queue/.state/auto_extras/
out-lightftp-aflnet/queue/.state/deterministic_done/

[thuanpv]

Thanks for reporting this. We have tested AFLNet and ProFuzzBench on Ubuntu only and unfortunately we don't have any plan to extend the support to other platforms due to our limited resources. Have you tried to run some experiments on Ubuntu?

[rnatella]

Hi, you can try by removing the memory limit, using the option "-m none"

[jonahmvp]

Thanks for the response, got it working by removing the memory limit as instructed by @rnatella !