------------[ cut here ]------------
WARNING: CPU: 0 PID: 15375 at arch/x86/mm/pat.c:1017 untrack_pfn+0x214/0x270 arch/x86/mm/pat.c:1017()
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 15375 Comm: syz-executor2 Not tainted 4.4.169+ #7
 0000000000000000 9d8b9a25716ea742 ffff8800b39af6e8 ffffffff81aa635d
 ffffffff828353a0 ffff8801c6bfc740 ffffffff82830900 0000000000000009
 00000000000003f9 ffff8800b39af7a8 ffffffff813a22b4 0000000041b58ab3
Call Trace:
 [<ffffffff81aa635d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81aa635d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff813a22b4>] panic+0x19e/0x359 kernel/panic.c:112
 [<ffffffff813a24a4>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff810d44d9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:492
 [<ffffffff810b7a04>] untrack_pfn+0x214/0x270 arch/x86/mm/pat.c:1017
 [<ffffffff8142ee93>] unmap_single_vma+0xea3/0x10d0 mm/memory.c:1322
audit: type=1400 audit(1545665067.425:462): avc:  denied  { read } for  pid=15366 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
audit: type=1400 audit(1545665067.435:463): avc:  denied  { create } for  pid=15366 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
audit: type=1400 audit(1545665067.445:464): avc:  denied  { write } for  pid=15366 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
 [<ffffffff81430a11>] unmap_vmas+0x81/0xd0 mm/memory.c:1373
 [<ffffffff8143cebe>] unmap_region+0x1ae/0x300 mm/mmap.c:2499
 [<ffffffff8144106d>] do_munmap+0x80d/0xd40 mm/mmap.c:2696
 [<ffffffff8144c660>] move_vma+0x550/0x9a0 mm/mremap.c:334
 [<ffffffff8144d4aa>] mremap_to mm/mremap.c:453 [inline]
 [<ffffffff8144d4aa>] SYSC_mremap mm/mremap.c:516 [inline]
 [<ffffffff8144d4aa>] SyS_mremap+0x9fa/0xd90 mm/mremap.c:483
 [<ffffffff81006101>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 [<ffffffff81006101>] do_fast_syscall_32+0x321/0xa80 arch/x86/entry/common.c:397
 [<ffffffff82717a90>] sysenter_flags_fixed+0xd/0x1a
Kernel Offset: disabled
Rebooting in 86400 seconds..