panic: mutex 0xfffffd80748443c0 not held in mtx_leave
Starting stack trace...
panic(ffffffff83047ff8) at panic+0x1ba sys/kern/subr_prf.c:229
mtx_leave(fffffd80748443c0) at mtx_leave+0x11c sys/kern/kern_lock.c:335
msleep(fffffd80748442f8,fffffd80748443c0,4,ffffffff830c4a60,0) at msleep+0x125 sys/kern/kern_synch.c:249
vm_map_lock_ln(fffffd80748442c8,fffffd8072510ea0,0) at vm_map_lock_ln+0xcb sys/uvm/uvm_map.c:5250
uvm_mapanon(fffffd80748442c8,ffff80002c1b1038,21000,1000,2080713) at uvm_mapanon+0x292
uvm_mmapanon(fffffd80748442c8,ffff80002c1b1038,21000,3,7,5002,d2b94d7be238336c,5002) at uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1019
sys_mmap(ffff8000376b0540,ffff80002c1b11b0,ffff80002c1b1100) at sys_mmap+0xaa4 sys/uvm/uvm_mmap.c:421
syscall(ffff80002c1b11b0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f1d6578fb20, count: 248
End of stack trace.