Eclipser doesn't seem to work with LLVM sanitizers

[agroce]

Compiling with -fsanitize=foo seems to cause the fork server to not be able to start, with any of address, undefined, or integer. Be nice to be able to fuzz with sanitizers.

[jchoi2022]

Actually, this is a known issue, and it seems to be a problem between QEMU and ASAN, not of Eclipser. When you download and build the pure version of QEMU (without any modification made for Eclipser), it fails to run any simple program compiled with '-fsanitize=address' option. When I observed with 'strace', it allocates memory repeatedly and terminates after consuming all memory. I confirmed this issue exists in several QEMU versions - '2.3.0', '2.12.1', and '3.1.0'.

Considering that Eclipser is a binary-based fuzzer, which is originally intended to fuzz program without source code, we thought this was not a high priority issue.

Still, we will try to take a look at QEMU and ASAN when we have time. Or any help would be welcomed, too.

[agroce]

Thanks!

It's working with DeepState now, and finding new things. Understood this is a QEMU issue, and it's not a big deal for DeepState, really.