BUG: unable to handle kernel paging request at ffffeafffde48020
IP: [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline]
IP: [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline]
IP: [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline]
IP: [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029
PGD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 31989 Comm: syz-executor7 Not tainted 4.4.150-g5541782 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800a1bf6000 task.stack: ffff8800a5820000
RIP: 0010:[<ffffffff8150e8f8>]  [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff8150e8f8>]  [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline]
RIP: 0010:[<ffffffff8150e8f8>]  [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline]
RIP: 0010:[<ffffffff8150e8f8>]  [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029
RSP: 0018:ffff8800a5827b50  EFLAGS: 00010246
RAX: 1ffffd5fffbc9004 RBX: ffffeafffde48020 RCX: ffffc90004a4f000
RDX: 00000000000000b0 RSI: ffffffff8150e8c0 RDI: 00003fff792001e0
RBP: ffff8800a5827c58 R08: ffffffff8533b500 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8800a1bf6000 R12: ffffeafffde48000
R13: dffffc0000000000 R14: ffff8801d22cc800 R15: ffff8801d22cc800
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f574eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffeafffde48020 CR3: 00000001ca11a000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff814ac4b5 ffffffff814ad132 ffff8800a1bf6920 fffffbfff0882602
 ffff8800a1bf68d0 ffff8800a1bf68d8 ffff8800a1bf6928 ffff8800ad978f78
 1ffff10014b04f7a ffff8802522cc000 0000000000000000 0000000020200000
Call Trace:
 [<ffffffff815104aa>] split_huge_page_pmd_mm+0x7a/0x90 mm/huge_memory.c:3058
 [<ffffffff81510691>] split_huge_page_address+0x1d1/0x220 mm/huge_memory.c:3085
 [<ffffffff815108fb>] vma_adjust_trans_huge+0x21b/0x2c0 mm/huge_memory.c:3111
 [<ffffffff814ab4b0>] vma_adjust+0xd50/0x13d0 mm/mmap.c:833
 [<ffffffff814ac0ff>] __split_vma.isra.40+0x5cf/0x750 mm/mmap.c:2584
 [<ffffffff814ac4b5>] do_munmap+0x235/0xe50 mm/mmap.c:2663
 [<ffffffff814ad132>] vm_munmap+0x62/0x80 mm/mmap.c:2713
 [<ffffffff814b3145>] SYSC_munmap mm/mmap.c:2722 [inline]
 [<ffffffff814b3145>] SyS_munmap+0x25/0x30 mm/mmap.c:2719
 [<ffffffff81006d94>] do_syscall_32_irqs_on arch/x86/entry/common.c:393 [inline]
 [<ffffffff81006d94>] do_fast_syscall_32+0x324/0x8b0 arch/x86/entry/common.c:460
 [<ffffffff838cca03>] sysenter_flags_fixed+0xd/0x1a
Code: 48 c1 eb 06 48 01 d8 48 8d 58 20 48 89 85 68 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 fd 04 00 00 4c 8b a5 68 ff ff ff <4d> 8b 74 24 20 41 f6 c6 01 0f 85 b1 03 00 00 e8 d4 5b e4 ff 49 
RIP  [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline]
RIP  [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline]
RIP  [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029
 RSP <ffff8800a5827b50>
CR2: ffffeafffde48020
---[ end trace 7c1c9493f28cc215 ]---