panic: Most recently used by ip6opt

cpuid = 0
time = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0020f0cd30
vpanic() at vpanic+0x1e0/frame 0xfffffe0020f0cd90
panic() at panic+0x43/frame 0xfffffe0020f0cdf0
mtrash_ctor() at mtrash_ctor+0xed/frame 0xfffffe0020f0ce30
uma_zalloc_arg() at uma_zalloc_arg+0x1036/frame 0xfffffe0020f0cee0
malloc() at malloc+0xe1/frame 0xfffffe0020f0cf50
ip6_ctloutput() at ip6_ctloutput+0x1f88/frame 0xfffffe0020f0d850
sosetopt() at sosetopt+0x101/frame 0xfffffe0020f0d8d0
kern_setsockopt() at kern_setsockopt+0x158/frame 0xfffffe0020f0d950
sys_setsockopt() at sys_setsockopt+0x33/frame 0xfffffe0020f0d980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0020f0dab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0020f0dab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41311a, rsp = 0x7fffdfffdf38, rbp = 0x5 ---
KDB: enter: panic
[ thread pid 7489 tid 100799 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why