[ 475.1843615] panic: kernel diagnostic assertion "(use & VUSECOUNT_MASK) == 1" failed: file "/syzkaller/managers/ci2-netbsd-kubsan/kernel/sys/kern/vfs_vnode.c", line 882 
[ 475.2044342] cpu1: Begin traceback...
1970/01/01 00:06:39 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 475.2345843] vpanic() at netbsd:vpanic+0x2f0 sys/kern/subr_prf.c:288
[ 475.3551860] kern_assert() at netbsd:kern_assert+0x65 sys/arch/amd64/amd64/db_disasm.c:1074