[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.059997] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 24.370741] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 24.759290] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 26.032005] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) [ 26.197929] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts. [ 31.590542] random: sshd: uninitialized urandom read (32 bytes read, 117 bits of entropy available) 2018/07/21 04:00:25 parsed 1 programs [ 33.103542] random: cc1: uninitialized urandom read (8 bytes read, 119 bits of entropy available) 2018/07/21 04:00:27 executed programs: 0 [ 34.409408] IPVS: Creating netns size=2552 id=1 [ 34.520969] kasan: CONFIG_KASAN_INLINE enabled [ 34.526410] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.539276] Dumping ftrace buffer: [ 34.542787] (ftrace buffer empty) [ 34.546467] Modules linked in: [ 34.549755] CPU: 0 PID: 3877 Comm: syz-executor0 Not tainted 4.4.141-g1b37d68 #7 [ 34.557256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.566584] task: ffff8801c6f78000 task.stack: ffff8801c6f08000 [ 34.572609] RIP: 0010:[] [] nf_tables_set_lookup+0x3c/0xc0 [ 34.581543] RSP: 0018:ffff8801c6f0f518 EFLAGS: 00010202 [ 34.586972] RAX: dffffc0000000000 RBX: ffffffffffffffea RCX: 1ffff10038de1ebd [ 34.594213] RDX: 0000000000000004 RSI: ffffffff8314e797 RDI: 0000000000000000 [ 34.601453] RBP: ffff8801c6f0f538 R08: ffff8801c6f0f678 R09: 0000000000000000 [ 34.608697] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000020 [ 34.615940] R13: ffff8801cb578294 R14: 0000000000000000 R15: ffff8801c6f0f678 [ 34.623182] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009aca900 [ 34.631380] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.637236] CR2: 0000000008069f30 CR3: 00000001da33a000 CR4: 00000000001606f0 [ 34.644486] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.651728] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.658968] Stack: [ 34.661088] 1ffff10038de1eab ffff8800bb2f8c80 ffff8801cb578280 ffff8801c6f0f638 [ 34.669092] ffff8801c6f0f660 ffffffff8314fda9 ffff8801c6f0f5d8 ffff8800bb287700 [ 34.677093] 0000000041b58ab3 ffffffff8423ef33 ffffffff8314fc00 ffffffff838bb724 [ 34.685085] Call Trace: [ 34.687650] [] nf_tables_getset+0x1a9/0x510 [ 34.693594] [] ? nf_tables_delset+0x280/0x280 [ 34.699724] [] ? mutex_lock_nested+0x574/0x850 [ 34.705940] [] ? nfnetlink_rcv_msg+0x7a3/0xc00 [ 34.712316] [] ? mutex_lock_killable_nested+0x980/0x980 [ 34.719315] [] ? nf_tables_delset+0x280/0x280 [ 34.725431] [] nfnetlink_rcv_msg+0xa19/0xc00 [ 34.731467] [] netlink_rcv_skb+0x145/0x370 [ 34.737323] [] ? nfnetlink_bind+0x250/0x250 [ 34.743267] [] nfnetlink_rcv+0x983/0x10a0 [ 34.749046] [] ? netlink_deliver_tap+0x93/0x910 [ 34.755334] [] ? netlink_deliver_tap+0xba/0x910 [ 34.761625] [] ? selinux_nlmsg_lookup+0x187/0x4f0 [ 34.768090] [] ? netlink_trim+0x208/0x280 [ 34.773860] [] netlink_unicast+0x4e9/0x700 [ 34.779716] [] ? netlink_attachskb+0x6a0/0x6a0 [ 34.785918] [] netlink_sendmsg+0x795/0xc30 [ 34.791774] [] ? netlink_unicast+0x700/0x700 [ 34.797807] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 34.804273] [] ? security_socket_sendmsg+0x8f/0xc0 [ 34.810824] [] ? netlink_unicast+0x700/0x700 [ 34.816853] [] sock_sendmsg+0xcc/0x110 [ 34.822361] [] ___sys_sendmsg+0x745/0x880 [ 34.828130] [] ? copy_msghdr_from_user+0x550/0x550 [ 34.834682] [] ? do_futex+0x12d/0x17f0 [ 34.840193] [] ? __wake_up_sync+0x10/0x10 [ 34.845960] [] ? exit_robust_list+0x220/0x220 [ 34.852089] [] ? filemap_map_pages+0x470/0x930 [ 34.858294] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 34.865019] [] ? __fget_light+0x9f/0x1f0 [ 34.870700] [] ? __fdget+0x18/0x20 [ 34.875864] [] ? sockfd_lookup_light+0xb6/0x160 [ 34.882158] [] __sys_sendmsg+0xd6/0x190 [ 34.887752] [] ? SyS_shutdown+0x1b0/0x1b0 [ 34.893522] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 34.899639] [] compat_SyS_sendmsg+0x2a/0x40 [ 34.905592] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 34.912144] [] do_fast_syscall_32+0x326/0x8b0 [ 34.918264] [] sysenter_flags_fixed+0xd/0x17 [ 34.924291] Code: 48 c7 c3 ea ff ff ff e8 93 2d 20 fe 4d 85 ed 74 65 e8 89 2d 20 fe 4d 8d 66 20 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 69 49 8b 5e 20 49 be 00 00 00 00 00 fc ff df 4c [ 34.951051] RIP [] nf_tables_set_lookup+0x3c/0xc0 [ 34.957640] RSP [ 34.961386] ---[ end trace 456fff43c829083a ]--- [ 34.966166] Kernel panic - not syncing: Fatal exception [ 34.971979] Dumping ftrace buffer: [ 34.975491] (ftrace buffer empty) [ 34.979174] Kernel Offset: disabled [ 34.982775] Rebooting in 86400 seconds..