[winkd] Windows kernel debug, r2 can not debug with winkd plugin

[Hacksign]

Environment

>> LC_ALL=C date
Mon Sep  2 19:05:29 CST 2024
>> LC_ALL=C r2 -v
radare2 5.9.2 0 @ linux-x86-64
birth: git.5.9.2 2024-08-01__08:35:56
options: gpl release -O1 cs:5 cl:2 meson
>> LC_ALL=C uname -ms
Linux x86_64

Description

By this guide: https://book.rada.re/debugger/windbg.html

I want connect to a Windows kernel debug environment with VirutualBox. The debugee & debugger is OK with 2 virtual machines through a COM connection.

Now I want the debugee directly connect to r2 debugger running on Linux (in this case, only 1 virtual machine is needed).

The pipe (/tmp/virtualbox-com1) is created by the debugee, but radare2 seems "failed" to connect to the socket, it just told me the socket is opend then stucked :

# R2_DEBUG=1 r2 -a x86 -b 64 -D winkd winkd:///tmp/virtualbox-com1
DEBUG: Cannot find dart in PATH
DEBUG: RCoreCmd: ft dylib *.dlopen *.dlsym *.dlclose *.mmap *.LoadLibrary *.GetProcAddress
DEBUG: RCoreCmd: ft alloc *.malloc *.free$ *.calloc *.kalloc *.realloc
DEBUG: RCoreCmd: ft time *.settimeofday *.gettimeofday *.time *.adjtime *.ctime *.timed *.date$ *.sleep *.Sleep *.usleep *.clock_nanosleep *.localtime *.asctime *.difftime *.gmtime *.mktime *.timelocal *.timegm *.tzfile *.tzset
DEBUG: RCoreCmd: ft env *.getenv *.putenv *.unsetenv *.setenv *.GetEnvironmentVariable *.SetEnvironmentVariable *.ExpandEnvironmentStrings
DEBUG: RCoreCmd: ft fs *.open$ *.close *.read$ *.write *.CloseHandle *.FindFirstFileW *._wfopen *._wstat *.ftruncate *.lseek *._chsize *.GetFullPathName *.realpath *.RemoveDirectory *.DeleteFile *.CreateFile *.WriteFile *.UnmapViewOfFile *.CreateFileMapping *.MapViewOfFile *.readlink *.chmod *.fchmod *.chown *.stat *.fstat *.lstat *.fstatat *.lstat64 *.stat64 *.chflags *.fchflags *.lchflags
DEBUG: RCoreCmd: ft network *.socket *.connect *.bind$ *.listen *.accept *.sendto *.recvfrom *.gethostbyname *.htons *.ntohs
DEBUG: RCoreCmd: ft threads *.pthread_create *.pthread_mutex_init *.pthread_cond_init *.CreateThread *.TerminateThread *.WaitForSingleObject *.GetCurrentThreadId
DEBUG: RCoreCmd: ft process *.getpid *.getppid *.kill *.exit *.abort *.assert *.gethostid *.sethostid *.sysctl
DEBUG: RCoreCmd: ft stdout ^printf *.puts *.write
DEBUG: RCoreCmd: ft string *.strcat *.strcpy *.strncpy *.strlen *.strtok *.strstr *.strlcpy *.asprintf *.sprintf *.snprintf
DEBUG: Cannot open directory '/usr/lib/radare2/5.9.2'
DEBUG: Cannot open directory '/root/.local/share//radare2/plugins'
DEBUG: Cannot open directory '/usr/lib/radare2-extras/5.9.2'
DEBUG: Cannot open directory '/usr/lib/radare2-bindings/5.9.2'
INFO: Opened pipe /tmp/virtualbox-com1 with fd 0x7

Am I miss understanding this guide: https://book.rada.re/debugger/windbg.html ?

I think r2 originally suport kernel debug with winkd plugin on Linux environment. Am I right ?