BUG: Bad page map in process JS Helper  pte:8000000406bfd825 pmd:1c7bff067
page:ffffea00101aff40 count:2 mapcount:-1 mapping:ffff8801b1cda670 index:0x10f3
flags: 0x17fff800000086c(referenced|uptodate|lru|active|private)
page dumped because: bad pte
page->mem_cgroup:ffff88042e091400
addr:00007f01551f7000 vm_flags:08100073 anon_vma:ffff8803f1ba0b40 mapping:          (null) index:7f01551f7
file:          (null) fault:          (null) mmap:          (null) readpage:          (null)
CPU: 1 PID: 2477 Comm: JS Helper Tainted: P    B      OE   4.4.0-11-generic #26-Ubuntu
Hardware name: MSI MS-7693/970 GAMING (MS-7693), BIOS V22.2 12/16/2014
 0000000000000286 00000000e97e1297 ffff88019122ba60 ffffffff813e1ec3
 00007f01551f7000 ffff88042880c320 ffff88019122bab0 ffffffff811ba52f
 ffff88019122bc48 ffffea00101aff40 ffff88019122ba90 ffffea00101aff40
Call Trace:
 [<ffffffff813e1ec3>] dump_stack+0x63/0x90
 [<ffffffff811ba52f>] print_bad_pte+0x1df/0x2a0
 [<ffffffff811bc0bd>] unmap_page_range+0x66d/0x7a0
 [<ffffffff811bc26d>] unmap_single_vma+0x7d/0xe0
 [<ffffffff811bcc61>] unmap_vmas+0x51/0xa0
 [<ffffffff811c6177>] exit_mmap+0xa7/0x170
 [<ffffffff8107ccb7>] mmput+0x57/0x130
 [<ffffffff810829ed>] do_exit+0x27d/0xae0
 [<ffffffff810fec6e>] ? futex_wait+0x16e/0x280
 [<ffffffff810832d3>] do_group_exit+0x43/0xb0
 [<ffffffff8108f392>] get_signal+0x292/0x600
 [<ffffffff81017517>] do_signal+0x37/0x6f0
 [<ffffffff81101400>] ? do_futex+0x120/0x500
 [<ffffffff813b494c>] ? blk_finish_plug+0x2c/0x40
 [<ffffffff811d005d>] ? SyS_madvise+0x48d/0x7d0
 [<ffffffff811aa52b>] ? vm_mmap_pgoff+0xbb/0xe0
 [<ffffffff8100320c>] exit_to_usermode_loop+0x8c/0xd0
 [<ffffffff81003c5e>] syscall_return_slowpath+0x4e/0x60
 [<ffffffff8181c990>] int_ret_from_sys_call+0x25/0x8f