DragonFly 6.5-DEVELOPMENT #1: Wed Jul  8 12:08:39 UTC 2026
    root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64

Single-fix kernel build with DF-0901 fix applied to sys/vfs/smbfs/smbfs_node.c.
Note: smbfs is NOT compiled into the default X86_64_GENERIC kernel (NETSMB is
optional and not in the config). The fix is validated via:
1. Patched smbfs_node.c compiles cleanly as smbfs.ko module
2. Harness module demonstrates the race pattern before/after
3. Code inspection confirms the fix is logically correct