panic: Can't clear local locks with F_UNLCKSYS cpuid = 1 time = 59 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fa0e520 vpanic() at vpanic+0x1e0/frame 0xfffffe001fa0e580 panic() at panic+0x43/frame 0xfffffe001fa0e5e0 lf_advlockasync() at lf_advlockasync+0x14dd/frame 0xfffffe001fa0e6a0 lf_advlock() at lf_advlock+0x5e/frame 0xfffffe001fa0e710 vop_stdadvlock() at vop_stdadvlock+0xf2/frame 0xfffffe001fa0e810 VOP_ADVLOCK_APV() at VOP_ADVLOCK_APV+0xc5/frame 0xfffffe001fa0e840 kern_fcntl() at kern_fcntl+0xfd1/frame 0xfffffe001fa0e8f0 kern_fcntl_freebsd() at kern_fcntl_freebsd+0x14f/frame 0xfffffe001fa0e980 amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fa0eab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fa0eab0 --- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdfffdf38, rbp = 0x3 --- KDB: enter: panic [ thread pid 39379 tid 100710 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why