panic: _mtx_lock_sleep: recursed on non-recursive mutex vm map (system) @ /tank/users/markj/src/freebsd/sys/vm/vm_map.c:2055                                  
                                                                                                                                                              
cpuid = 4                                                                                                                                                     
time = 1                                                                                                                                                      
KDB: stack backtrace:                                                                                                                                         
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff82122ee0                                                                                
vpanic() at vpanic+0x182/frame 0xffffffff82122f30                                                                                                             
panic() at panic+0x43/frame 0xffffffff82122f90                                                                                                                
__mtx_lock_sleep() at __mtx_lock_sleep+0x47a/frame 0xffffffff82123020                                                                                         
__mtx_lock_flags() at __mtx_lock_flags+0xe5/frame 0xffffffff82123070                                                                                          
vm_map_find() at vm_map_find+0x15d/frame 0xffffffff82123130                                                                                                   
kva_import() at kva_import+0x3f/frame 0xffffffff82123170                                                                                                      
vmem_try_fetch() at vmem_try_fetch+0xf4/frame 0xffffffff821231c0                                                                                              
vmem_xalloc() at vmem_xalloc+0x4da/frame 0xffffffff82123240                                                                                                   
kva_import_domain() at kva_import_domain+0x36/frame 0xffffffff82123270                                                                                        
vmem_try_fetch() at vmem_try_fetch+0xf4/frame 0xffffffff821232c0                                                                                              
vmem_xalloc() at vmem_xalloc+0x4da/frame 0xffffffff82123340                                                                                                   
vmem_alloc() at vmem_alloc+0x8a/frame 0xffffffff82123390                                                                                                      
kmem_malloc_domainset() at kmem_malloc_domainset+0x96/frame 0xffffffff82123400                                                                                
keg_alloc_slab() at keg_alloc_slab+0xd7/frame 0xffffffff82123450                                                                                              
zone_import() at zone_import+0x13e/frame 0xffffffff82123500                                                                                                   
cache_alloc() at cache_alloc+0x3bc/frame 0xffffffff82123560                                                                                                   
cache_alloc_retry() at cache_alloc_retry+0x25/frame 0xffffffff821235a0                                                                                        
vm_map_insert() at vm_map_insert+0x3f9/frame 0xffffffff82123640                                                                                               
vm_map_find() at vm_map_find+0x4a4/frame 0xffffffff82123700                                                                                                   
kva_import() at kva_import+0x3f/frame 0xffffffff82123740                                                                                                      
vmem_try_fetch() at vmem_try_fetch+0xf4/frame 0xffffffff82123790                                                                                              
vmem_xalloc() at vmem_xalloc+0x4da/frame 0xffffffff82123810                                                                                                   
kva_import_domain() at kva_import_domain+0x36/frame 0xffffffff82123840                                                                                        
vmem_try_fetch() at vmem_try_fetch+0xf4/frame 0xffffffff82123890                                                                                              
vmem_xalloc() at vmem_xalloc+0x4da/frame 0xffffffff82123910                                                                                                   
vmem_alloc() at vmem_alloc+0x8a/frame 0xffffffff82123960                                                                                                      
kmem_malloc_domainset() at kmem_malloc_domainset+0x96/frame 0xffffffff821239d0                                                                                
keg_alloc_slab() at keg_alloc_slab+0xd7/frame 0xffffffff82123a20                                                                                              
zone_import() at zone_import+0x13e/frame 0xffffffff82123ad0                                                                                                   
cache_alloc() at cache_alloc+0x3bc/frame 0xffffffff82123b30                                                                                                   
cache_alloc_retry() at cache_alloc_retry+0x25/frame 0xffffffff82123b70                                                                                        
malloc() at malloc+0x8e/frame 0xffffffff82123bb0                                                                                                              
eventhandler_find_or_create_list() at eventhandler_find_or_create_list+0x93/frame 0xffffffff82123be0                                                          
eventhandler_register_internal() at eventhandler_register_internal+0x50/frame 0xffffffff82123c10                                                              
wlan_modevent() at wlan_modevent+0x52/frame 0xffffffff82123c30                                                                                                
module_register_init() at module_register_init+0xbd/frame 0xffffffff82123c60                                                                                  
mi_startup() at mi_startup+0xec/frame 0xffffffff82123cb0