random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
BUG: unable to handle kernel paging request at ffffeafff92b0020
IP: [<ffffffff814f5297>] __read_once_size include/linux/compiler.h:243 [inline]
IP: [<ffffffff814f5297>] compound_head include/linux/page-flags.h:143 [inline]
IP: [<ffffffff814f5297>] PageAnon include/linux/page-flags.h:386 [inline]
IP: [<ffffffff814f5297>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
PGD 0 [   33.450186] 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 3799 Comm: syz-executor421 Not tainted 4.9.121-g681e57b #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801b8ec6000 task.stack: ffff8801b6910000
RIP: 0010:[<ffffffff814f5297>]  [<ffffffff814f5297>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff814f5297>]  [<ffffffff814f5297>] compound_head include/linux/page-flags.h:143 [inline]
RIP: 0010:[<ffffffff814f5297>]  [<ffffffff814f5297>] PageAnon include/linux/page-flags.h:386 [inline]
RIP: 0010:[<ffffffff814f5297>]  [<ffffffff814f5297>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
RSP: 0018:ffff8801b6917948  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffeafff92b0000 RCX: ffffea0006d48000
RDX: 1ffffd5fff256004 RSI: ffffffff814f5278 RDI: ffffeafff92b0000
RBP: ffff8801b6917970 R08: 0000000000033c80 R09: 0000000000000001
R10: ffff8801b8ec6000 R11: 0000000000000001 R12: ffff8801b6917c08
R13: ffffeafff92b0020 R14: ffffeafff92b0000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffeafff92b0020 CR3: 00000001c649d000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffeafff92b0020 ffff8801b6917c08 ffff8801bb650810 ffffeafff92b0000
 ffff8801cb44e8f0 ffff8801b69179c8 ffffffff8154c20f ffff8801b6917c18
 ffff8801b6917c10 ffff8801b6917c88 00003ffe4ac001a0 00000001bb650000
Call Trace:
 [<ffffffff8154c20f>] zap_huge_pmd+0x16f/0x860 mm/huge_memory.c:1428
 [<ffffffff814ca95d>] zap_pmd_range mm/memory.c:1245 [inline]
 [<ffffffff814ca95d>] zap_pud_range mm/memory.c:1279 [inline]
 [<ffffffff814ca95d>] unmap_page_range+0x12ad/0x1730 mm/memory.c:1300
 [<ffffffff814caee1>] unmap_single_vma+0x101/0x260 mm/memory.c:1345
 [<ffffffff814cb822>] unmap_vmas+0x102/0x1d0 mm/memory.c:1375
 [<ffffffff814e4214>] exit_mmap+0x214/0x3f0 mm/mmap.c:3020
 [<ffffffff8112d6f3>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff8112d6f3>] mmput+0xf3/0x2d0 kernel/fork.c:906
 [<ffffffff81142c26>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff81142c26>] do_exit+0x906/0x27b0 kernel/exit.c:820
 [<ffffffff81148de1>] do_group_exit+0x111/0x340 kernel/exit.c:937
 [<ffffffff8114902d>] SYSC_exit_group kernel/exit.c:948 [inline]
 [<ffffffff8114902d>] SyS_exit_group+0x1d/0x20 kernel/exit.c:946
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839ffcd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 55 41 54 53 48 89 fb e8 c8 b6 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 93 b6 e6 
RIP  [<ffffffff814f5297>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff814f5297>] compound_head include/linux/page-flags.h:143 [inline]
RIP  [<ffffffff814f5297>] PageAnon include/linux/page-flags.h:386 [inline]
RIP  [<ffffffff814f5297>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429
 RSP <ffff8801b6917948>
CR2: ffffeafff92b0020
---[ end trace 884ec82073577c68 ]---