Unresolved symbols when using musl interpreter

[smeng9]

Describe the bug
I tried to run a dynamically linked binary compiled against musl, but zelos cannot load the program correctly

To Reproduce
Steps to reproduce the behavior:

1. Download the following musl binary uname with ld-musl-x86_64.so.1 (You can also obtain from Alpine Linux distribution)
   musl_binary.zip
2. Put ld-musl-x86_64.so.1 in /lib folder
3. uname should be able to run correctly when directly called in terminal
4. uname cannot be run when calling zelos uname

Expected behavior
The interpreter should be found and loaded, and all symbols should be resolved.

Screenshots
zelos uname --mount=x86,/lib/ld-musl-x86_64.so.1,/lib/ld-musl-x86_64.so.1
16:28:00:parse_____:NOTICE:No default interpreter for this arch
Traceback (most recent call last):
File "/home/shaoyu/.local/bin/zelos", line 8, in
sys.exit(main())
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/main.py", line 23, in main
z = ZelosCmdline(sys.argv[1:])
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/api/zelos_api.py", line 721, in init
self._setup(config)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/api/zelos_api.py", line 78, in _setup
e = Engine(config=config, api=self)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/engine.py", line 123, in init
self.load_executable(binary, entrypoint_override=config.startat)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/engine.py", line 315, in load_executable
file = self._first_parse(module_path)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/engine.py", line 289, in _first_parse
return self._parse_file_data(module_path, file_data)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/engine.py", line 297, in _parse_file_data
parsed_file = self.os_plugins.parse(filename, filedata)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/plugin/plugin.py", line 168, in parse
parsed_file = os_plugin.parse(path, binary)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/ext/platforms/linux/linux.py", line 80, in parse
parsed_file = LiefELF(self.z.files, path, binary)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/ext/platforms/linux/parse.py", line 33, in init
self.parse(path, binary)
File "/home/shaoyu/.local/lib/python3.8/site-packages/zelos/ext/platforms/linux/parse.py", line 106, in parse
for symbol in binary.static_symbols:
AttributeError: 'NoneType' object has no attribute 'static_symbols'

Additional context
Add any other context about the problem here.

[kvalakuzhyzp]

Thanks @smeng9 for using Zelos!

The reason you are getting this issue is indeed because of a bug in the ordering of when we try to identify the loader vs when we mount files into the filesystem.

If you want to run this file now, you can try using this command:

zelos ld-musl-x86_64.so.1 dynamic/uname --mount=x86,dynamic/uname,dynamic/uname

which would be emulating the slightly different command ld-musl-x86_64.so.1 dynamic/uname on the command line.

Let me know if this is an acceptable workaround for the moment.

[smeng9]

Yes, switching the order of arguments works for the moment. Thanks!