This is xnu-11215.1.10. See this file in:
xnu-8792.81.2 (MacOS 18, Darwin 22)
xnu-8019 (MacOS 17.0, Darwin 21)
xnu-6153.11.26 (MacOS 15.0, Darwin 19)
xnu-4903.221.2 (MacOS 14.0, Darwin 18)
xnu-4570.41.2 (MacOS 13.3, Darwin 17)
xnu-3789.70.16 (MacOS 12.6, Darwin 16)
xnu-3248.20.55 (MacOS 11.2, Darwin 15)
xnu-2782.40.9 (MacOS 10.10.5, Darwin 14)
xnu-2422.115.4 (MacOS 10.9.5, Darwin 13)
xnu-2050.24.15 (MacOS 10.8.4, Darwin 12)
xnu-1699.32.7 (MacOS 10.7.5, Darwin 11)
xnu-1504.15.3 (MacOS 10.6.8, Darwin 10)
xnu-1228.15.4 (MacOS 10.5.8, Darwin 9)
Directory listing for
xnu-11215.1.10//libkern
Makefile
OSKextLib.cpp
OSKextVersion.c
amfi/
apple_encrypted_archive/
c++/
compression/
conf/
coreanalytics/
coretrust/
crypto/
firehose/
gen/
image4/
img4/
kernel_mach_header.c
kmod/
kxld/
libclosure/
libcxx_support/
libkern/
mkext.c
net/
os/
ptrauth_utils.c
stack_protector.c
stdio/
uuid/
zlib/