panic: Most recently used by temp

cpuid = 1
time = 1557604643
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fb30220
vpanic() at vpanic+0x1e0/frame 0xfffffe001fb30280
panic() at panic+0x43/frame 0xfffffe001fb302e0
mtrash_ctor() at mtrash_ctor+0xed/frame 0xfffffe001fb30320
uma_zalloc_arg() at uma_zalloc_arg+0x1036/frame 0xfffffe001fb303d0
malloc() at malloc+0xe1/frame 0xfffffe001fb30440
elf64_load_file() at elf64_load_file+0x6d/frame 0xfffffe001fb304b0
exec_elf64_imgact() at exec_elf64_imgact+0x1aa2/frame 0xfffffe001fb305b0
kern_execve() at kern_execve+0x7d8/frame 0xfffffe001fb30900
sys_execve() at sys_execve+0x79/frame 0xfffffe001fb30980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fb30ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fb30ab0
--- syscall (59, FreeBSD ELF64, sys_execve), rip = 0x8003c43ca, rsp = 0x7fffffffdaa8, rbp = 0x7fffffffdb30 ---
KDB: enter: panic
[ thread pid 4365 tid 101124 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why