[ 1618.118179] BUG: Bad page map in process perf_fuzzer pte:ffff8800c4d60040 pmd:bd86a067
[ 1618.142177] addr:0000000000409000 vm_flags:00000875 anon_vma: (null) mapping:ffff8800cb74adf0 index:9
[ 1618.172142] vma->vm_ops->fault: filemap_fault+0x0/0x358
[ 1618.187783] vma->vm_file->f_op->mmap: ext4_file_mmap+0x0/0x48
[ 1618.204981] CPU: 1 PID: 24819 Comm: perf_fuzzer Not tainted 3.12.0 #4
[ 1618.224256] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 1618.250825] 0000000000409000 ffff8800bf6dfaa8 ffffffff8151d8ec 0000000000000000
[ 1618.273081] ffff8800c89ac928 ffff8800bf6dfaf8 ffffffff810ed692 dead000000200200
[ 1618.295345] 00000000c03df067 ffff8800bf6dfbe8 0000000000409000 ffffea0002bc2fe8
[ 1618.317603] Call Trace:
[ 1618.324951] [] dump_stack+0x49/0x5d
[ 1618.340355] [] print_bad_pte+0x1f5/0x213
[ 1618.357059] [] unmap_single_vma+0x511/0x666
[ 1618.374540] [] unmap_vmas+0x32/0x49
[ 1618.389934] [] exit_mmap+0x84/0x10d
[ 1618.405343] [] ? hrtimer_try_to_cancel+0x41/0x4b
[ 1618.424129] [] mmput+0x4b/0xd1
[ 1618.438227] [] do_exit+0x36c/0x936
[ 1618.453366] [] ? update_context_time+0x11/0x34
[ 1618.471628] [] ? native_sched_clock+0x3b/0x3d
[ 1618.489635] [] ? sched_clock_local+0x1c/0x82
[ 1618.507376] [] do_group_exit+0x78/0xa0
[ 1618.523563] [] get_signal_to_deliver+0x46d/0x48a
[ 1618.542347] [] ? ctx_sched_in+0x35/0x185
[ 1618.559051] [] ? perf_event_sched_in+0x69/0x72
[ 1618.577318] [] do_signal+0x46/0x5f5
[ 1618.592724] [] ? __perf_event_task_sched_in+0x3a/0x10e
[ 1618.613071] [] ? finish_task_switch+0x46/0x98
[ 1618.631075] [] ? __schedule+0x51c/0x54b
[ 1618.647516] [] do_notify_resume+0x2c/0x64
[ 1618.664486] [] retint_signal+0x3d/0x78
[ 1618.680661] Disabling lock debugging due to kernel taint