BUG: Bad page map in process systemd-udevd  pte:ffffffff pmd:68f91067
addr:00007ff4f2993000 vm_flags:08000070 anon_vma:          (null) mapping:ffff880036dcec48 index:37
vma->vm_ops->fault: filemap_fault+0x0/0x410
vma->vm_file->f_op->mmap: ext4_file_mmap+0x0/0x60
CPU: 0 PID: 2540 Comm: systemd-udevd Tainted: G    B        3.13.0-16-generic #36-Ubuntu
Hardware name: Dell Inc. Vostro 1320/0R235J, BIOS A08 03/05/2010
 ffff88009279b840 ffff88009244ba98 ffffffff81710b65 00007ff4f2993000
 ffff88009244bae0 ffffffff81172483 00000000ffffffff 0000000000000037
 ffff880068f91c98 00000000ffffffff 00007ff4f2993000 00007ff4f2a00000
Call Trace:
 [<ffffffff81710b65>] dump_stack+0x45/0x56
 [<ffffffff81172483>] print_bad_pte+0x1a3/0x250
 [<ffffffff81173739>] vm_normal_page+0x69/0x80
 [<ffffffff81173b0b>] unmap_page_range+0x3bb/0x7f0
 [<ffffffff81173fc1>] unmap_single_vma+0x81/0xf0
 [<ffffffff81175039>] unmap_vmas+0x49/0x90
 [<ffffffff8117e1ac>] exit_mmap+0x9c/0x170
 [<ffffffff8106343c>] mmput+0x5c/0x120
 [<ffffffff810687cc>] do_exit+0x26c/0xa50
 [<ffffffff8106902f>] do_group_exit+0x3f/0xa0
 [<ffffffff81078c50>] get_signal_to_deliver+0x1d0/0x6f0
 [<ffffffff81013448>] do_signal+0x48/0x960
 [<ffffffff8101b7d9>] ? sched_clock+0x9/0x10
 [<ffffffff8109bcdd>] ? sched_clock_local+0x1d/0x80
 [<ffffffff8110fdec>] ? acct_account_cputime+0x1c/0x20
 [<ffffffff8109c30b>] ? account_user_time+0x8b/0xa0
 [<ffffffff8109c924>] ? vtime_account_user+0x54/0x60
 [<ffffffff81013dc9>] do_notify_resume+0x69/0xb0
 [<ffffffff8171913c>] retint_signal+0x48/0x8c