BUG: unable to handle kernel paging request at ffffeafff9080020
IP: [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline]
IP: [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline]
IP: [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline]
IP: [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
PGD 0 [   34.132000] 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 21815 Comm: syz-executor390 Not tainted 4.9.122-g54068d6 #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801b6403000 task.stack: ffff8801b5b58000
RIP: 0010:[<ffffffff814f5937>]  [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff814f5937>]  [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline]
RIP: 0010:[<ffffffff814f5937>]  [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline]
RIP: 0010:[<ffffffff814f5937>]  [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
RSP: 0018:ffff8801b5b5f6c0  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafff9080000 RCX: 0000000000000000
RDX: 1ffffd5fff210004 RSI: ffffffff814f5918 RDI: ffffeafff9080000
RBP: ffff8801b5b5f6e8 R08: 00000000000361c0 R09: 0000000000000001
R10: ffff8801b6403000 R11: 0000000000000001 R12: ffff8801b5b5f980
R13: ffffeafff9080020 R14: ffffeafff9080000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafff9080020 CR3: 00000001beff2000 CR4: 00000000001606f0
Stack:
 ffffeafff9080020 ffff8801b5b5f980 ffff8801b9101800 ffffeafff9080000
 ffff8801da1b4c60 ffff8801b5b5f740 ffffffff8154cb8f ffff8801b5b5f990
 ffff8801b5b5f988 ffff8801b5b5fa00 00003ffe420001e0 00000001b9101000
Call Trace:
 [<ffffffff8154cb8f>] zap_huge_pmd+0x16f/0x860 mm/huge_memory.c:1428
 [<ffffffff814cae6d>] zap_pmd_range mm/memory.c:1245 [inline]
 [<ffffffff814cae6d>] zap_pud_range mm/memory.c:1279 [inline]
 [<ffffffff814cae6d>] unmap_page_range+0x12ad/0x1730 mm/memory.c:1300
 [<ffffffff814cb3f1>] unmap_single_vma+0x101/0x260 mm/memory.c:1345
 [<ffffffff814cbd32>] unmap_vmas+0x102/0x1d0 mm/memory.c:1375
 [<ffffffff814e4834>] exit_mmap+0x214/0x3f0 mm/mmap.c:3020
 [<ffffffff8112db23>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff8112db23>] mmput+0xf3/0x2d0 kernel/fork.c:906
 [<ffffffff81143056>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff81143056>] do_exit+0x906/0x27b0 kernel/exit.c:820
 [<ffffffff81149211>] do_group_exit+0x111/0x340 kernel/exit.c:937
 [<ffffffff8116c08f>] get_signal+0x4cf/0x1450 kernel/signal.c:2321
 [<ffffffff81052637>] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807
 [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157
 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
 [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
 [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287
 [<ffffffff83a00cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 55 41 54 53 48 89 fb e8 58 b4 e6 ff 4c 8d 6b 20 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 b8 05 00 00 <4c> 8b 73 20 49 89 dc 41 f6 c6 01 0f 85 4b 03 00 00 e8 23 b4 e6 
RIP  [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline]
RIP  [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline]
RIP  [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
 RSP <ffff8801b5b5f6c0>
CR2: ffffeafff9080020
---[ end trace 120e5bcf2804c30d ]---