[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 22.369996] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.113024] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 26.545801] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 27.292863] random: sshd: uninitialized urandom read (32 bytes read, 77 bits of entropy available) [ 63.756815] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available) Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. [ 69.426619] random: sshd: uninitialized urandom read (32 bytes read, 96 bits of entropy available) [ 69.539486] IPVS: Creating netns size=2552 id=1 executing program executing program executing program executing program executing program executing program [ 69.589329] IPVS: Creating netns size=2552 id=2 executing program executing program executing program executing program executing program executing program executing program executing program [ 69.653998] IPVS: Creating netns size=2552 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 69.836151] IPVS: Creating netns size=2552 id=4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 69.927997] IPVS: Creating netns size=2552 id=5 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.042659] IPVS: Creating netns size=2552 id=6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.160488] IPVS: Creating netns size=2552 id=7 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.329685] IPVS: Creating netns size=2552 id=8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 74.431831] BUG: unable to handle kernel paging request at ffffeafff8e38008 [ 74.439234] IP: [] page_remove_rmap+0x2e/0x260 [ 74.445506] PGD 0 [ 74.447800] Oops: 0000 [#1] PREEMPT SMP KASAN [ 74.452816] Dumping ftrace buffer: [ 74.456342] (ftrace buffer empty) [ 74.460037] Modules linked in: [ 74.463342] CPU: 0 PID: 5648 Comm: syz-executor071 Not tainted 4.4.150-g5541782 #19 [ 74.471118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program executing program [ 74.480474] task: ffff8801d67e3000 task.stack: ffff8801d4ef8000 [ 74.486522] RIP: 0010:[] [] page_remove_rmap+0x2e/0x260 [ 74.495235] RSP: 0018:ffff8801d4eff6d8 EFLAGS: 00010246 [ 74.500674] RAX: dffffc0000000000 RBX: ffffeafff8e38000 RCX: ffffea00071c0000 [ 74.507937] RDX: 1ffffd5fff1c7001 RSI: ffffffff814bceaf RDI: ffffeafff8e38008 [ 74.515210] RBP: ffff8801d4eff6e8 R08: ffffffff85363fb0 R09: 0000000000000000 [ 74.522470] R10: 0000000000000001 R11: ffff8801d67e3000 R12: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program [ 74.529734] R13: 1ffff1003a9dfee1 R14: ffff8801d4faa800 R15: ffffeafff8e38000 [ 74.536996] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 74.545212] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 74.551087] CR2: ffffeafff8e38008 CR3: 00000001d8302000 CR4: 00000000001606f0 [ 74.558347] Stack: [ 74.560484] ffff8801d4eff968 0000000000000001 ffff8801d4eff790 ffffffff8150ad13 [ 74.568563] 00003ffe38e001a0 00003ffe38e001a0 0000000041b58ab3 ffffffff841ef837 executing program executing program executing program executing program executing program executing program executing program [ 74.576643] ffffffff8150ab10 00000000000004f0 ffff8801d981d1b8 ffff8801d4eff758 [ 74.584766] Call Trace: [ 74.587352] [] zap_huge_pmd+0x203/0x510 [ 74.592975] [] ? __pmd_trans_huge_lock+0x320/0x320 [ 74.599547] [] unmap_single_vma+0xea3/0x1240 [ 74.605774] [] ? vm_normal_page+0x280/0x280 [ 74.611762] [] ? __put_single_page+0x60/0x60 [ 74.617816] [] unmap_vmas+0x81/0xd0 [ 74.623088] [] exit_mmap+0x1c9/0x3a0 executing program executing program executing program executing program executing program executing program executing program [ 74.628464] [] ? SyS_remap_file_pages+0x870/0x870 [ 74.634952] [] ? kmem_cache_free+0x2b4/0x340 [ 74.641008] [] mmput+0xf8/0x2d0 [ 74.645931] [] do_exit+0x8d8/0x26b0 [ 74.651204] [] ? release_task.part.17+0x1200/0x1200 [ 74.657890] [] ? recalc_sigpending+0x76/0xa0 [ 74.663945] [] do_group_exit+0x111/0x330 [ 74.669654] [] get_signal+0x4ec/0x14b0 [ 74.675187] [] do_signal+0x8b/0x1d30 executing program executing program executing program executing program executing program executing program executing program [ 74.680564] [] ? setup_sigcontext+0x780/0x780 [ 74.686701] [] ? file_map_prot_check+0x193/0x310 [ 74.693103] [] ? selinux_file_mprotect+0xf7/0x550 [ 74.699924] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 74.706096] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 74.713117] [] ? exit_to_usermode_loop+0xe4/0x160 [ 74.719612] [] exit_to_usermode_loop+0x11a/0x160 [ 74.726030] [] do_fast_syscall_32+0x61e/0x8b0 executing program executing program executing program executing program executing program executing program executing program [ 74.732172] [] sysenter_flags_fixed+0xd/0x1a [ 74.738217] Code: e5 41 54 53 48 89 fb e8 31 76 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 03 76 e9 ff f0 83 43 18 ff 78 [ 74.766183] RIP [] page_remove_rmap+0x2e/0x260 [ 74.772546] RSP [ 74.776163] CR2: ffffeafff8e38008 [ 74.779610] ---[ end trace 03a91a14a962e8ac ]--- [ 74.784352] Kernel panic - not syncing: Fatal exception [ 74.790024] Dumping ftrace buffer: [ 74.793552] (ftrace buffer empty) [ 74.797264] Kernel Offset: disabled [ 74.800863] Rebooting in 86400 seconds..