------------[ cut here ]------------ WARNING: CPU: 1 PID: 16738 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: 1 PID: 16738 Comm: syz-executor3 Not tainted 4.4.163+ #12 0000000000000000 7ea7fdaf76d82d6d ffff8801c08df6e8 ffffffff81aa556d ffffffff828354e0 ffff8800b542df00 ffffffff82830a40 0000000000000009 00000000000003f9 ffff8801c08df7a8 ffffffff813a1544 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] panic+0x19e/0x359 kernel/panic.c:112 [] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455 [] warn_slowpath_null+0x29/0x30 kernel/panic.c:492 [] untrack_pfn+0x214/0x270 arch/x86/mm/pat.c:1017 [] unmap_single_vma+0xea3/0x10d0 mm/memory.c:1322 [] unmap_vmas+0x81/0xd0 mm/memory.c:1373 [] unmap_region+0x1ae/0x300 mm/mmap.c:2499 [] do_munmap+0x80d/0xd40 mm/mmap.c:2696 [] move_vma+0x550/0x9a0 mm/mremap.c:334 [] mremap_to mm/mremap.c:453 [inline] [] SYSC_mremap mm/mremap.c:516 [inline] [] SyS_mremap+0x9fa/0xd90 mm/mremap.c:483 [] do_syscall_32_irqs_on arch/x86/entry/common.c:396 [inline] [] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:463 [] sysenter_flags_fixed+0xd/0x1a Kernel Offset: disabled Rebooting in 86400 seconds..