panic: trap type 4, code=0, pc=ffffffff816c2867
Starting stack trace...
panic(ffffffff82fe1497) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff8000359a44a0) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
lf_advlock(ffff800001384d20,0,fffffd805fa79200,8,ffff8000359a46d0,40) at lf_advlock+0x2f7 ls_ref sys/kern/vfs_lockf.c:138 [inline]
lf_advlock(ffff800001384d20,0,fffffd805fa79200,8,ffff8000359a46d0,40) at lf_advlock+0x2f7 sys/kern/vfs_lockf.c:278
VOP_ADVLOCK(fffffd806b7a1a68,fffffd805fa79200,8,ffff8000359a46d0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:620
sys_fcntl(ffff800034f94028,ffff8000359a4830,ffff8000359a4780) at sys_fcntl+0x11da
syscall(ffff8000359a4830) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000359a4830) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfeb3f9a86c0, count: 249
End of stack trace.