BUG: unable to handle kernel paging request at ffffeafffd7f8020
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: 8162 Comm: syz-executor6 Not tainted 4.4.150-g5541782 #83
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b5e29800 task.stack: ffff8800a2e48000
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:ffff8800a2e4fa78  EFLAGS: 00010246
RAX: 1ffffd5fffaff004 RBX: ffffeafffd7f8020 RCX: ffffc900074d0000
RDX: 00000000000000c1 RSI: ffffffff8150e8c0 RDI: 00003fff5fe001e0
RBP: ffff8800a2e4fb80 R08: ffffffff85302070 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8800b5e29800 R12: ffffeafffd7f8000
R13: dffffc0000000000 R14: ffff8800ba090800 R15: ffff8800ba090800
FS:  00007fc6ae07b700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafffd7f8020 CR3: 00000000ba643000 CR4: 00000000001606f0
Stack:
 ffffffff814b30fb ffff8800b5e2a120 ffffffff853d1d60 fffffbfff0882602
 ffff8800b5e2a0d8 ffff8800b5e2a128 ffff8800b5e2a0e0 ffff8800b9b56b58
 1ffff100145c9f5f ffff88013a090000 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
 [<ffffffff815108c6>] vma_adjust_trans_huge+0x1e6/0x2c0 mm/huge_memory.c:3101
 [<ffffffff814ab4b0>] vma_adjust+0xd50/0x13d0 mm/mmap.c:833
 [<ffffffff814abf92>] __split_vma.isra.40+0x462/0x750 mm/mmap.c:2581
 [<ffffffff814b30fb>] split_vma+0x5b/0x80 mm/mmap.c:2613
 [<ffffffff814ce68b>] madvise_behavior mm/madvise.c:116 [inline]
 [<ffffffff814ce68b>] madvise_vma mm/madvise.c:383 [inline]
 [<ffffffff814ce68b>] SYSC_madvise mm/madvise.c:527 [inline]
 [<ffffffff814ce68b>] SyS_madvise+0xbbb/0xe50 mm/madvise.c:458
 [<ffffffff838cb0a5>] entry_SYSCALL_64_fastpath+0x22/0x9e
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 <ffff8800a2e4fa78>
CR2: ffffeafffd7f8020
---[ end trace 6f99044a9567e903 ]---