Problems:

1.

https://github.com/NetBSD/src/commit/f7823ea3b6d25e950795d3a3b71bbbf929341fce.patch

Unifdefed:

-#ifdef COMPAT_43
 20	STD 		{ pid_t sys_getpid_with_ppid(void); } getpid
-#else
-20	STD 		{ pid_t sys_getpid(void); }
-#endif

native ABI uses sys_getpid_with_ppid()

2.

sys/compat/netbsd32/netbsd32_sysent.c

netbsd32 ABI uses sys_getpid()

=====

Fix:

1. Switch netbsd32 to sys_getpid_with_ppid()

or

2. Switch native to sys_getpid() and provide the sys_getpid_with_ppid() behavior when modloaded compat43 module

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The same applies to sys_getuid() and sys_getgid().