<1>[ 3636.113861] BUG: Bad page map in process sudo  pte:347361665368 pmd:ff31d9067
<1>[ 3636.114260] addr:00007f99bca80000 vm_flags:00000070 anon_vma:          (null) mapping:ffff88100943c290 index:106
<1>[ 3636.114678] vma->vm_ops->fault: filemap_fault+0x0/0x560
<1>[ 3636.115089] vma->vm_file->f_op->mmap: ext4_file_mmap+0x0/0x40
<4>[ 3636.115501] CPU: 16 PID: 40301 Comm: sudo Tainted: G    B D      L 3.18.17-20 #1
<4>[ 3636.115943] Hardware name: Quanta R210-MB2MS/R210-MB2MS, BIOS T6VA3B08 08/01/2013
<4>[ 3636.116441]  00007f99bca80000 ffff880fe8947a88 ffffffff816ce84c 0000000000000007
<4>[ 3636.116876]  ffff88102556eda8 ffff880fe8947ad8 ffffffff811714cf 0000000000000007
<4>[ 3636.117310]  ffff88102556eda8 ffff880fe8947af8 0000000000000000 ffff880ff31d9400
<4>[ 3636.117745] Call Trace:
<4>[ 3636.118174]  [<ffffffff816ce84c>] dump_stack+0x4e/0x68
<4>[ 3636.118610]  [<ffffffff811714cf>] print_bad_pte+0x1bf/0x290
<4>[ 3636.119049]  [<ffffffff8117238f>] vm_normal_page+0x7f/0x90
<4>[ 3636.119541]  [<ffffffff81172f67>] unmap_single_vma+0x417/0x900
<4>[ 3636.120062]  [<ffffffff81153a4d>] ? release_pages+0x20d/0x290
<4>[ 3636.120571]  [<ffffffff81173744>] unmap_vmas+0x54/0xa0
<4>[ 3636.121014]  [<ffffffff8117ce1c>] exit_mmap+0x9c/0x170
<4>[ 3636.121456]  [<ffffffff81068a8c>] mmput+0x7c/0x150
<4>[ 3636.121892]  [<ffffffff8106e252>] do_exit+0x272/0xa90
<4>[ 3636.122327]  [<ffffffff810b1447>] ? kmsg_dump+0x127/0x160
<4>[ 3636.122763]  [<ffffffff81018758>] oops_end+0xb8/0x160
<4>[ 3636.123192]  [<ffffffff816c861e>] pgtable_bad+0x8b/0x97
<4>[ 3636.123609]  [<ffffffff8105b7bf>] __do_page_fault+0x50f/0x580
<4>[ 3636.124052]  [<ffffffff811be11e>] ? cp_new_stat+0x14e/0x170
<4>[ 3636.124516]  [<ffffffff811be505>] ? SYSC_newstat+0x25/0x30
<4>[ 3636.124915]  [<ffffffff8105b97b>] do_page_fault+0x2b/0x40
<4>[ 3636.125341]  [<ffffffff816d8568>] page_fault+0x28/0x30
<3>[ 3636.125726] swap_free: Bad swap file entry 800000001001180
