panic: pipe_destroy_write_buffer: pipe map for 0xfffff800124015f0 contains residual data
cpuid = 1
time = 1569008494
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0022ec1720
vpanic() at vpanic+0x1e0/frame 0xfffffe0022ec1780
panic() at panic+0x43/frame 0xfffffe0022ec17e0
pipe_write() at pipe_write+0x1f9f/frame 0xfffffe0022ec18b0
dofilewrite() at dofilewrite+0xfd/frame 0xfffffe0022ec1910
kern_writev() at kern_writev+0x63/frame 0xfffffe0022ec1950
sys_writev() at sys_writev+0x50/frame 0xfffffe0022ec1980
amd64_syscall() at amd64_syscall+0x477/frame 0xfffffe0022ec1ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0022ec1ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41328a, rsp = 0x7fffdffdcf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 1454 tid 100882 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why