[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.752560] 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: [ 20.703911] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.179317] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.031085] random: sshd: uninitialized urandom read (32 bytes read, 94 bits of entropy available) [ 22.202087] random: sshd: uninitialized urandom read (32 bytes read, 99 bits of entropy available) Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. [ 27.609380] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.735377] IPVS: Creating netns size=2552 id=1 executing program [ 27.775002] IPVS: Creating netns size=2552 id=2 executing program [ 27.813731] IPVS: Creating netns size=2552 id=3 executing program [ 27.843442] IPVS: Creating netns size=2552 id=4 executing program [ 27.883576] IPVS: Creating netns size=2552 id=5 executing program [ 27.913320] IPVS: Creating netns size=2552 id=6 executing program [ 27.944025] IPVS: Creating netns size=2552 id=7 executing program [ 27.985177] IPVS: Creating netns size=2552 id=8 executing program [ 29.099628] IPVS: Creating netns size=2552 id=9 executing program [ 29.138226] IPVS: Creating netns size=2552 id=10 executing program [ 29.170303] IPVS: Creating netns size=2552 id=11 executing program [ 29.212890] IPVS: Creating netns size=2552 id=12 executing program [ 29.247009] IPVS: Creating netns size=2552 id=13 executing program [ 29.280697] IPVS: Creating netns size=2552 id=14 executing program [ 29.325071] IPVS: Creating netns size=2552 id=15 executing program [ 29.359501] IPVS: Creating netns size=2552 id=16 [ 35.924528] pktgen: kernel_thread() failed for cpu 0 [ 35.929675] pktgen: Cannot create thread for cpu 0 (-4) [ 35.935110] pktgen: kernel_thread() failed for cpu 1 [ 35.940193] pktgen: Cannot create thread for cpu 1 (-4) [ 35.945545] pktgen: Initialization failed for all threads [ 36.022003] kasan: CONFIG_KASAN_INLINE enabled [ 36.026450] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.040639] Dumping ftrace buffer: [ 36.044148] (ftrace buffer empty) [ 36.047826] Modules linked in: [ 36.051097] CPU: 0 PID: 3358 Comm: syzkaller466631 Not tainted 4.4.111-g7902639 #18 [ 36.058854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.068782] task: ffff8801d13a17c0 task.stack: ffff8801cfbe8000 [ 36.074805] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.083726] RSP: 0018:ffff8801cfbefb30 EFLAGS: 00010202 [ 36.089139] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f389 [ 36.096374] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea080 [ 36.103609] RBP: ffff8801cfbefb60 R08: 0000000000000001 R09: 0000000000000000 [ 36.110851] R10: 0000000000000000 R11: 1ffff10039f7df32 R12: dffffc0000000000 [ 36.118084] R13: ffff8801cec47848 R14: 0000000000000038 R15: 00000000000000b8 [ 36.125328] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000084ac840 [ 36.133516] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.139371] CR2: 00007f907acca000 CR3: 00000001d06d0000 CR4: 0000000000160670 [ 36.146616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.153852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.161085] Stack: [ 36.163199] ffffffff82f9f300 ffffffff83cc5820 ffff8800b38bbc00 ffff8801cec47848 [ 36.171166] ffff8801cec47848 ffff8801cec47840 ffff8801cfbefb90 ffffffff82f9724e [ 36.179120] ffffffff82f97190 ffffffff843e2760 ffff8800b38bc6b8 dffffc0000000000 [ 36.187077] Call Trace: [ 36.189630] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.195914] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.202195] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.209259] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.215726] [] netfilter_net_exit+0x40/0xb0 [ 36.221670] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.228781] [] ops_exit_list.isra.4+0xae/0x150 [ 36.234978] [] setup_net+0x221/0x3e0 [ 36.240304] [] ? ops_init+0x3a0/0x3a0 [ 36.245724] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.252529] [] ? kmem_cache_alloc+0x219/0x290 [ 36.258636] [] copy_net_ns+0xd2/0x190 [ 36.264060] [] create_new_namespaces+0x2f6/0x610 [ 36.270525] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.277253] [] SyS_unshare+0x3da/0x700 [ 36.282764] [] ? SyS_clone+0x50/0x50 [ 36.288091] [] ? SyS_read+0x1b0/0x1b0 [ 36.293506] [] ? do_fast_syscall_32+0xd7/0x890 [ 36.299701] [] ? SyS_clone+0x50/0x50 [ 36.305031] [] do_fast_syscall_32+0x314/0x890 [ 36.311142] [] sysenter_flags_fixed+0xd/0x17 [ 36.317169] Code: a8 83 01 00 0f 84 d8 00 00 00 4d 8d 77 38 49 bc 00 00 00 00 00 fc ff df 49 81 c7 b8 00 00 00 e8 f7 0a 3c fe 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 f4 01 00 00 49 8b 1e e8 ed 5a 2e fe 48 85 [ 36.343488] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.350069] RSP [ 36.354679] ---[ end trace 53cca03e737fb6ee ]--- [ 36.359417] Kernel panic - not syncing: Fatal exception [ 36.365170] Dumping ftrace buffer: [ 36.368679] (ftrace buffer empty) [ 36.372361] Kernel Offset: disabled [ 36.375952] Rebooting in 86400 seconds..