Debugging the BPF Virtual Machine Lorenzo Fontana October 28, 2020 ● Debugging is useful to understand how things work ● Sometimes, eBPF programs can’t even load ● I couldn’t find good resources on this this, so, here I am ● I break lots of eBPF programs ● The BPF Virtual machine is not easy to understand Why ? The BPF subsystem lives in the kernel AND The kernel can be debugged using gdb The

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine’s local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes the MOD CHARSET LITE New module in Apache 2.0. This experimental module allows for character set translation or recoding. MOD FILE CACHE New module in Apache 2.0. This module includes the functionality of configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes mod_charset_lite New module in Apache 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache 2.0. This module includes the functionality configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes mod_charset_lite New module in Apache 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache 2.0. This module includes the functionality configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes mod_charset_lite New module in Apache 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache 2.0. This module includes the functionality configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes mod_charset_lite New module in Apache 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache 2.0. This module includes the functionality configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine’s local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes the MOD CHARSET LITE New module in Apache 2.0. This experimental module allows for character set translation or recoding. MOD FILE CACHE New module in Apache 2.0. This module includes the functionality of configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache 2.0 includes mod_charset_lite New module in Apache 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache 2.0. This module includes the functionality configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and

be served on error instead of the default error string. mod_cgi, mod_include, mod_isapi, ... Translation of headers to environment variables is more strict than before to mitigate some possible cross-site-scripting and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine's local codepage for filesystem access. Regular Expression Library Updated Apache httpd 2.0 includes mod_charset_lite New module in Apache httpd 2.0. This experimental module allows for character set translation or recoding. mod_file_cache New module in Apache httpd 2.0. This module includes the functionality

be served on error instead of the default error string. MOD CGI, MOD INCLUDE, MOD ISAPI, ... Translation of headers to environment variables is more strict than before to mitigate some possible cross-site-scripting and Windows XP. This support does not extend to Windows 95, 98 or ME, which continue to use the machine’s local codepage for filesystem access. Regular Expression Library Updated Apache httpd 2.0 includes configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and