BUG: unable to handle kernel paging request at ffffeafff91e8000
IP: [<ffffffff81508945>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
IP: [<ffffffff81508945>] PageHead include/linux/page-flags.h:396 [inline]
IP: [<ffffffff81508945>] copy_huge_pmd+0x235/0x710 mm/huge_memory.c:968
PGD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 7475 Comm: syz-executor6 Not tainted 4.4.149-gf76bdbd #18
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801bc046000 task.stack: ffff8801d66a8000
RIP: 0010:[<ffffffff81508945>]  [<ffffffff81508945>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
RIP: 0010:[<ffffffff81508945>]  [<ffffffff81508945>] PageHead include/linux/page-flags.h:396 [inline]
RIP: 0010:[<ffffffff81508945>]  [<ffffffff81508945>] copy_huge_pmd+0x235/0x710 mm/huge_memory.c:968
RSP: 0018:ffff8801d66af988  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafff91e8000 RCX: ffffc900064b0000
RDX: 1ffffd5fff23d000 RSI: ffffffff8150891f RDI: 00003ffe47a001e0
RBP: ffff8801d66af9f8 R08: ffffffff8533fa80 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8801bc046000 R12: ffff8801d6c7a800
R13: ffff8800b767c000 R14: ffffea0000000000 R15: 00003ffe47a001e0
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f57f7b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffeafff91e8000 CR3: 00000001c7258000 CR4: 00000000001606f0
Stack:
 00003ffe47a001e0 0000000000000080 ffff8801d7071400 ffff8800ac079b58
 ffff8801d2f7a1b8 ffff8801c6dbe800 ffffea00072e9b00 00000000bc0468e0
 0000000020000000 ffff8801d6c7a800 ffff8801d6c7a800 dffffc0000000000
Call Trace:
 [<ffffffff8149bf11>] copy_pmd_range mm/memory.c:1007 [inline]
 [<ffffffff8149bf11>] copy_pud_range mm/memory.c:1039 [inline]
 [<ffffffff8149bf11>] copy_page_range+0x721/0x1480 mm/memory.c:1101
 [<ffffffff8112e063>] dup_mmap kernel/fork.c:517 [inline]
 [<ffffffff8112e063>] dup_mm kernel/fork.c:985 [inline]
 [<ffffffff8112e063>] copy_mm kernel/fork.c:1039 [inline]
 [<ffffffff8112e063>] copy_process+0x3f03/0x63f0 kernel/fork.c:1507
 [<ffffffff81130966>] _do_fork+0x146/0xe20 kernel/fork.c:1788
 [<ffffffff81131717>] SYSC_clone kernel/fork.c:1899 [inline]
 [<ffffffff81131717>] SyS_clone+0x37/0x50 kernel/fork.c:1893
 [<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
 [<ffffffff838cbfc3>] sysenter_flags_fixed+0xd/0x1a
Code: e8 81 b7 e4 ff 48 23 5d 90 48 b8 00 00 00 00 00 fc ff df 48 c1 eb 06 4c 01 f3 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 3f 04 00 00 <48> 8b 03 f6 c4 40 0f 84 79 03 00 00 e8 4a b7 e4 ff 48 8d 7b 20 
RIP  [<ffffffff81508945>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
RIP  [<ffffffff81508945>] PageHead include/linux/page-flags.h:396 [inline]
RIP  [<ffffffff81508945>] copy_huge_pmd+0x235/0x710 mm/huge_memory.c:968
 RSP <ffff8801d66af988>
CR2: ffffeafff91e8000
---[ end trace 1f3afe09c38561d0 ]---