login: panic: thread with borrowed priority returning to userland
cpuid = 1
time = 1588982030
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0025a54990
vpanic() at vpanic+0x1c7/frame 0xfffffe0025a549f0
panic() at panic+0x43/frame 0xfffffe0025a54a50
userret() at userret+0x745/frame 0xfffffe0025a54ac0
amd64_syscall() at amd64_syscall+0x399/frame 0xfffffe0025a54bf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0025a54bf0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x41331a, rsp = 0x7fffdff79f38, rbp = 0x6 ---
KDB: enter: panic
[ thread pid 925 tid 100532 ]
Stopped at      kdb_enter+0x67: movq    $0,0x14a9076(%rip)
db> 
db>