Fork server handshake Failed ---ASAN error

[legendsLjj]

hello, thanks for your wonderful job,I have learned a lot.But I encoutered a terrible error when I use asan to compile LightFTP and dcmtk in my linux server.

I follow the instructions of the Dockerfile, and execute them in my ubuntu 16.04 server.

when I finish all of steps , I start testing, then I suffered the error.

the first image is dcmtk, shell look like
"afl-fuzz -i in-dicom -o out -N tcp://127.0.0.1/5158 -P DICOM -D 10000 -E -K ./dcmqrscp"

the second image is lightftp
"afl-fuzz -t 3000 -i in-ftp -x ftp.dict -o out -N tcp://127.0.0.1/2200 -P FTP -D 10000 -q 3 -s 3 -E -K -c ftpclean.sh ./fftp fftp.conf 2200"

for lightftp, when I try "unset AFL_use_asan", the error change into "No such process"

eventually, I use gcc to compile, and add "-Q" with the run shell, it works!
"afl-fuzz -t 3000 -i in-ftp -x ftp.dict -o out -N tcp://127.0.0.1/2200 -P FTP -D 10000 -q 3 -s 3 -E -K -c ftpclean.sh ./fftp fftp.conf 2200"

[rnatella]

Hi, I cannot get the PNG file, could you check the attachment?

[legendsLjj]

Hi, I cannot get the PNG file, could you check the attachment?

hello,thanks for your attention, I have updated the images，hoping for your advice~

[rnatella]

You can try running afl-fuzz with "-m none". ASAN increases a lot the memory consumption of the child process (i.e., the fork server).

[legendsLjj]

You can try running afl-fuzz with "-m none". ASAN increases a lot the memory consumption of the child process (i.e., the fork server).

Thank you so much for your help! The problem has been solved by adding "-m none" options.

[rnatella]

Great! Happy it helped