random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 55 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 58 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 64 bits of entropy available)
BUG: unable to handle kernel paging request at ffffeafffd538008
IP: [<ffffffff814bc77e>] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278
PGD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 3854 Comm: syz-executor421 Not tainted 4.4.148-gf057ff9 #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800ac136000 task.stack: ffff8800bb0a0000
RIP: 0010:[<ffffffff814bc77e>]  [<ffffffff814bc77e>] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278
RSP: 0018:ffff8800bb0a79c0  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafffd538000 RCX: ffffea0002ac0000
RDX: 1ffffd5fffaa7001 RSI: ffffffff814bc75f RDI: ffffeafffd538008
RBP: ffff8800bb0a79d0 R08: ffffffff85363fb0 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8800ac136000 R12: 0000000000000001
R13: 1ffff10017614f3e R14: ffff8800b150f810 R15: ffffeafffd538000
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafffd538008 CR3: 00000000b3c5b000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8800bb0a7c50 0000000000000001 ffff8800bb0a7a78 ffffffff8150a1f3
 00003fff54e001a0 00003fff54e001a0 0000000041b58ab3 ffffffff841ef82f
 ffffffff81509ff0 00000000000004f0 ffff8800af7cc6e0 ffff8800bb0a7a40
Call Trace:
 [<ffffffff8150a1f3>] zap_huge_pmd+0x203/0x510 mm/huge_memory.c:1493
 [<ffffffff81498cc3>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81498cc3>] zap_pud_range mm/memory.c:1283 [inline]
 [<ffffffff81498cc3>] unmap_page_range mm/memory.c:1307 [inline]
 [<ffffffff81498cc3>] unmap_single_vma+0xea3/0x1240 mm/memory.c:1352
 [<ffffffff8149ab91>] unmap_vmas+0x81/0xd0 mm/memory.c:1382
 [<ffffffff814b34a9>] exit_mmap+0x1c9/0x3a0 mm/mmap.c:2958
 [<ffffffff81127e58>] __mmput kernel/fork.c:717 [inline]
 [<ffffffff81127e58>] mmput+0xf8/0x2d0 kernel/fork.c:737
 [<ffffffff81137ae8>] exit_mm kernel/exit.c:440 [inline]
 [<ffffffff81137ae8>] do_exit+0x8d8/0x26b0 kernel/exit.c:742
 [<ffffffff8113db31>] do_group_exit+0x111/0x330 kernel/exit.c:885
 [<ffffffff8113dd6d>] SYSC_exit_group kernel/exit.c:896 [inline]
 [<ffffffff8113dd6d>] SyS_exit_group+0x1d/0x20 kernel/exit.c:894
 [<ffffffff838ca6a5>] entry_SYSCALL_64_fastpath+0x22/0x9e
Code: e5 41 54 53 48 89 fb e8 e1 77 e9 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 de 01 00 00 <f6> 43 08 01 0f 84 4e 01 00 00 e8 b3 77 e9 ff f0 83 43 18 ff 78 
RIP  [<ffffffff814bc77e>] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278
 RSP <ffff8800bb0a79c0>
CR2: ffffeafffd538008
---[ end trace 78716036e3d96cee ]---