random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 62 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 65 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 71 bits of entropy available)
BUG: unable to handle kernel paging request at ffffeafff8cb0008
IP: [<ffffffff814bc8de>] 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: 3696 Comm: syz-executor651 Not tainted 4.4.149-gf76bdbd #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801ce93b000 task.stack: ffff8800b21f0000
RIP: 0010:[<ffffffff814bc8de>]  [<ffffffff814bc8de>] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278
RSP: 0018:ffff8800b21f79c0  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafff8cb0000 RCX: 0000000000000000
RDX: 1ffffd5fff196001 RSI: ffffffff814bc8bf RDI: ffffeafff8cb0008
RBP: ffff8800b21f79d0 R08: ffffffff85333170 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8801ce93b000 R12: 0000000000000001
R13: 1ffff1001643ef3e R14: ffff8801d4239800 R15: ffffeafff8cb0000
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafff8cb0008 CR3: 00000001cea30000 CR4: 00000000001606f0
Stack:
 ffff8800b21f7c50 0000000000000001 ffff8800b21f7a78 ffffffff8150a443
 00003ffe32c001e0 00003ffe32c001e0 0000000041b58ab3 ffffffff841ef837
 ffffffff8150a240 00000000000004f0 ffff8800b212c790 ffff8800b21f7a40
Call Trace:
 [<ffffffff8150a443>] zap_huge_pmd+0x203/0x510 mm/huge_memory.c:1493
 [<ffffffff81498e23>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81498e23>] zap_pud_range mm/memory.c:1283 [inline]
 [<ffffffff81498e23>] unmap_page_range mm/memory.c:1307 [inline]
 [<ffffffff81498e23>] unmap_single_vma+0xea3/0x1240 mm/memory.c:1352
 [<ffffffff8149acf1>] unmap_vmas+0x81/0xd0 mm/memory.c:1382
 [<ffffffff814b3609>] exit_mmap+0x1c9/0x3a0 mm/mmap.c:2958
 [<ffffffff81127fb8>] __mmput kernel/fork.c:717 [inline]
 [<ffffffff81127fb8>] mmput+0xf8/0x2d0 kernel/fork.c:737
 [<ffffffff81137c48>] exit_mm kernel/exit.c:440 [inline]
 [<ffffffff81137c48>] do_exit+0x8d8/0x26b0 kernel/exit.c:742
 [<ffffffff8113dc91>] do_group_exit+0x111/0x330 kernel/exit.c:885
 [<ffffffff8113decd>] SYSC_exit_group kernel/exit.c:896 [inline]
 [<ffffffff8113decd>] SyS_exit_group+0x1d/0x20 kernel/exit.c:894
 [<ffffffff838ca665>] 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  [<ffffffff814bc8de>] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278
 RSP <ffff8800b21f79c0>
CR2: ffffeafff8cb0008
---[ end trace b6ac02abebd8a62d ]---