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: [] 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:[] [] 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: [] zap_huge_pmd+0x203/0x510 mm/huge_memory.c:1493 [] zap_pmd_range mm/memory.c:1249 [inline] [] zap_pud_range mm/memory.c:1283 [inline] [] unmap_page_range mm/memory.c:1307 [inline] [] unmap_single_vma+0xea3/0x1240 mm/memory.c:1352 [] unmap_vmas+0x81/0xd0 mm/memory.c:1382 [] exit_mmap+0x1c9/0x3a0 mm/mmap.c:2958 [] __mmput kernel/fork.c:717 [inline] [] mmput+0xf8/0x2d0 kernel/fork.c:737 [] exit_mm kernel/exit.c:440 [inline] [] do_exit+0x8d8/0x26b0 kernel/exit.c:742 [] do_group_exit+0x111/0x330 kernel/exit.c:885 [] SYSC_exit_group kernel/exit.c:896 [inline] [] SyS_exit_group+0x1d/0x20 kernel/exit.c:894 [] 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 43 08 01 0f 84 4e 01 00 00 e8 b3 77 e9 ff f0 83 43 18 ff 78 RIP [] page_remove_rmap+0x2e/0x260 mm/rmap.c:1278 RSP CR2: ffffeafffd538008 ---[ end trace 78716036e3d96cee ]---