BUG: Bad page state in process Xorg  pfn:305ed
page:c19f7da0 count:0 mapcount:0 mapping:00008000 index:0x0
page flags: 0x40008000(tail)
Pid: 759, comm: Xorg Not tainted 2.6.35-14-generic #19-Ubuntu
Call Trace:
 [<c01ddc7f>] bad_page+0x9f/0xf0
 [<c01de844>] free_pages_prepare+0x124/0x160
 [<c01de8a3>] __free_pages_ok+0x23/0xb0
 [<c01de949>] free_compound_page+0x19/0x20
 [<c01e220d>] put_page+0x10d/0x120
 [<c020b5b5>] kfree+0xb5/0xf0
 [<c0570009>] ? unix_write_space+0x39/0x60
 [<c04ed7d0>] skb_release_data+0x70/0xa0
 [<c056fd68>] ? unix_stream_recvmsg+0x218/0x480
 [<c04ed397>] __kfree_skb+0x17/0x90
 [<c04ed48e>] kfree_skb+0x3e/0x90
 [<c056fd68>] unix_stream_recvmsg+0x218/0x480
 [<c032d115>] ? apparmor_socket_recvmsg+0x15/0x20
 [<c04e81b8>] sock_aio_read+0x138/0x140
 [<c0217db4>] do_sync_read+0xa4/0xe0
 [<c032dd86>] ? apparmor_file_permission+0x16/0x20
 [<c0302244>] ? security_file_permission+0x14/0x20
 [<c0217e52>] ? rw_verify_area+0x62/0xd0
 [<c013e5cd>] ? finish_task_switch+0x3d/0xc0
 [<c021875b>] vfs_read+0x17b/0x190
 [<c02187b2>] sys_read+0x42/0x70
 [<c05c99a4>] syscall_call+0x7/0xb