panic: Most recently used by temp

cpuid = 0
time = 203
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001f58e490
vpanic() at vpanic+0x1e0/frame 0xfffffe001f58e4f0
panic() at panic+0x43/frame 0xfffffe001f58e550
mtrash_ctor() at mtrash_ctor+0xed/frame 0xfffffe001f58e590
uma_zalloc_arg() at uma_zalloc_arg+0x1036/frame 0xfffffe001f58e640
malloc() at malloc+0xe1/frame 0xfffffe001f58e6b0
sigexit() at sigexit+0x2d9/frame 0xfffffe001f58e9a0
postsig() at postsig+0x407/frame 0xfffffe001f58ea70
ast() at ast+0x47d/frame 0xfffffe001f58eab0
doreti_ast() at doreti_ast+0x1f/frame 0x7fffffffecc0
KDB: enter: panic
[ thread pid 481 tid 100071 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why