[ 524.7321071] panic: kernel diagnostic assertion "(use & VUSECOUNT_MASK) > 1" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/kern/vfs_vnode.c", line 765 
[ 524.7522983] cpu1: Begin traceback...
[ 524.7725524] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
[ 524.8129770] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0xc91c
[