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1.1     ! leot        1: # Various (possible) problems of aarch64
        !             2: 
        !             3: Here a list of possible problems of NetBSD/evbarm aarch64 that needs further
        !             4: investigation in order to write proper PR or better yet to fix them!
        !             5: 
        !             6: 
        !             7: ## `usbhidctl` and NetBSD crashes on Pinebook
        !             8: 
        !             9: At least by running:
        !            10: 
        !            11: ````
        !            12: # usbhidctl -f uhid4 -r
        !            13: ````
        !            14: 
        !            15: it is possible to crash the Pinebook. Investigate why and if possible get a
        !            16: complete backtrace.
        !            17: 
        !            18: 
        !            19: ## `mpv` and NetBSD crashes
        !            20: Just by invoking `mpv` via:
        !            21: 
        !            22: ````
        !            23: $ mpv
        !            24: ````
        !            25: 
        !            26: It is possible to completely crash NetBSD on aarch64. Investigate why and if
        !            27: possible get a complete backtrace.
        !            28: 
        !            29: (Is it PaX MPROTECT related?)
        !            30: 
        !            31: 
        !            32: ## Python `import requests` SIGILLs
        !            33: Doing a (please note that also `python36` is affected):
        !            34: 
        !            35: ````
        !            36: $ python2.7 -c 'import requests'
        !            37: Illegal instruction (core dumped)
        !            38: Exit 132
        !            39: ````
        !            40: 
        !            41: leads to a SIGILL. Trying to reduce the test case this also happens with just a:
        !            42: 
        !            43: ````
        !            44: $ python2.7 -c 'import OpenSSL'
        !            45: Illegal instruction (core dumped)
        !            46: Exit 132
        !            47: ````
        !            48: 
        !            49: Trying to debug this a bit further we can see:
        !            50: 
        !            51: ````
        !            52: % cat asi.py
        !            53: import OpenSSL
        !            54: % python2.7 -m trace --trace asi.py
        !            55: [...]
        !            56: binding.py(88):     for attr in dir(lib):
        !            57: binding.py(89):         if attr not in excluded_names:
        !            58: binding.py(90):             setattr(conditional_lib, attr, getattr(lib, attr))
        !            59: binding.py(88):     for attr in dir(lib):
        !            60: binding.py(89):         if attr not in excluded_names:
        !            61: binding.py(90):             setattr(conditional_lib, attr, getattr(lib, attr))
        !            62: binding.py(88):     for attr in dir(lib):
        !            63: binding.py(89):         if attr not in excluded_names:
        !            64: binding.py(90):             setattr(conditional_lib, attr, getattr(lib, attr))
        !            65: binding.py(88):     for attr in dir(lib):
        !            66: binding.py(92):     return conditional_lib
        !            67: binding.py(126):                 cls._lib_loaded = True
        !            68: binding.py(128):                 cls.lib.SSL_library_init()
        !            69: Illegal instruction (core dumped)
        !            70: Exit 132
        !            71: ````