LOR in VM.

Hello.

I'm not sure if this was reported already. If not - here you go:

Kernel from 12 May.

lock order reversal
 1st 0xc30cfbe0 vm object (vm object) _at_ /usr/src/sys/vm/vm_object.c:512
 2nd 0xc082f110 system map (system map) _at_ /usr/src/sys/vm/vm_kern.c:325
Stack backtrace:
backtrace(c02de769,c082f110,c02e9056,c02e9056,c02e8eed) at backtrace+0x17
witness_lock(c082f110,8,c02e8eed,145,d5065a90) at witness_lock+0x697
_mtx_lock_flags(c082f110,0,c02e8eed,145,c2eba260) at _mtx_lock_flags+0xb1
_vm_map_lock(c082f0b0,c02e8eed,145,c01a9934,246) at _vm_map_lock+0x36
kmem_malloc(c082f0b0,1000,101,d5065b24,c0273a45) at kmem_malloc+0x65
page_alloc(c083a240,1000,d5065b17,101,c030080c) at page_alloc+0x27
slab_zalloc(c083a240,101,c02ea8c1,66f,c083a924) at slab_zalloc+0x155
uma_zone_slab(c083a240,101,c02ea8c1,66f,0) at uma_zone_slab+0xd8
uma_zalloc_internal(c083a240,0,101,6ef,0) at uma_zalloc_internal+0x55
uma_zfree_arg(c083a900,c3105000,0,d5065bcc,c025b698) at uma_zfree_arg+0x2cc
dev_pager_putfake(c3105000,0,c02e8708,bc,c30cfbe0) at dev_pager_putfake+0x3a
dev_pager_dealloc(c30cfbe0,1,c02ea7c4,10b,0) at dev_pager_dealloc+0xc8
vm_pager_deallocate(c30cfbe0,0,c02e999a,25e,c032f4a8) at vm_pager_deallocate+0x3d
vm_object_terminate(c30cfbe0,0,c02e999a,200,c30a46cc) at vm_object_terminate+0x1f4
vm_object_deallocate(c30cfbe0,c30a46cc,c30cfbe0,c30a46cc,d5065c9c) at vm_object_deallocate+0x217
vm_map_entry_delete(c308fe00,c30a46cc,c02e90c4,86e,c02da08a) at vm_map_entry_delete+0x3b
vm_map_delete(c308fe00,282e2000,282e3000,1000,282e2000) at vm_map_delete+0x453
vm_map_remove(c308fe00,282e2000,282e3000,0,c30cb428) at vm_map_remove+0x55
munmap(c2eba260,d5065d10,c02ee54b,3fb,2) at munmap+0x9e
syscall(2f,2f,2f,f8000,1000) at syscall+0x26e
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (73), eip = 0x282534e3, esp = 0xbfbffa2c, ebp = 0xbfbffa58 ---

-- 
Pawel Jakub Dawidek                       pawel_at_dawidek.net
UNIX Systems Programmer/Administrator     http://garage.freebsd.pl
Am I Evil? Yes, I Am!                     http://cerber.sourceforge.net