[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.572225] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.199635] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 20.531244] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.389909] random: sshd: uninitialized urandom read (32 bytes read, 82 bits of entropy available) [ 21.552936] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available) Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. [ 26.969814] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program [ 27.092059] IPVS: Creating netns size=2552 id=1 executing program [ 27.130783] IPVS: Creating netns size=2552 id=2 executing program [ 27.171043] IPVS: Creating netns size=2552 id=3 executing program [ 27.200514] IPVS: Creating netns size=2552 id=4 executing program [ 27.239491] IPVS: Creating netns size=2552 id=5 executing program [ 27.270069] IPVS: Creating netns size=2552 id=6 executing program [ 27.311589] IPVS: Creating netns size=2552 id=7 executing program [ 27.353442] IPVS: Creating netns size=2552 id=8 executing program [ 28.560957] IPVS: Creating netns size=2552 id=9 executing program [ 28.593155] IPVS: Creating netns size=2552 id=10 executing program [ 28.625913] IPVS: Creating netns size=2552 id=11 [ 28.658410] IPVS: Creating netns size=2552 id=12 executing program executing program [ 28.692081] IPVS: Creating netns size=2552 id=13 executing program [ 28.727959] IPVS: Creating netns size=2552 id=14 executing program [ 28.763298] IPVS: Creating netns size=2552 id=15 executing program [ 28.812812] IPVS: Creating netns size=2552 id=16 executing program [ 35.264397] pktgen: kernel_thread() failed for cpu 0 [ 35.269802] pktgen: Cannot create thread for cpu 0 (-4) [ 35.275167] pktgen: kernel_thread() failed for cpu 1 [ 35.282776] pktgen: Cannot create thread for cpu 1 (-4) [ 35.288195] pktgen: Initialization failed for all threads [ 35.354688] kasan: CONFIG_KASAN_INLINE enabled [ 35.359132] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.371915] Dumping ftrace buffer: [ 35.375418] (ftrace buffer empty) [ 35.379095] Modules linked in: [ 35.382364] CPU: 0 PID: 3361 Comm: syzkaller078545 Not tainted 4.4.107-g610c835 #4 [ 35.390036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.399354] task: ffff8800b4fbdf00 task.stack: ffff8801ccbc8000 [ 35.405373] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 35.414287] RSP: 0018:ffff8801ccbcfb30 EFLAGS: 00010202 [ 35.419698] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 35.426930] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 35.434168] RBP: ffff8801ccbcfb60 R08: 0000000000000001 R09: 0000000000000000 [ 35.441399] R10: 0000000000000000 R11: 1ffff10039979f32 R12: dffffc0000000000 [ 35.448637] R13: ffff8800b5583f08 R14: 0000000000000038 R15: 00000000000000b8 [ 35.455872] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000082a2840 [ 35.464064] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.469909] CR2: 00007f5288501000 CR3: 00000001d0d65000 CR4: 00000000001406f0 [ 35.477143] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.484376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.491608] Stack: [ 35.493722] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801cf959e00 ffff8800b5583f08 [ 35.501670] ffff8800b5583f08 ffff8800b5583f00 ffff8801ccbcfb90 ffffffff82f959ce [ 35.509622] ffffffff82f95910 ffffffff843dd460 ffff8801cf95a8b8 dffffc0000000000 [ 35.517563] Call Trace: [ 35.520113] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 35.526398] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 35.532677] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 35.539748] [] nf_unregister_net_hook+0x2ab/0x350 [ 35.546202] [] netfilter_net_exit+0x40/0xb0 [ 35.552141] [] ? nf_unregister_net_hooks+0x60/0x60 [ 35.558684] [] ops_exit_list.isra.4+0xae/0x150 [ 35.564882] [] setup_net+0x221/0x3e0 [ 35.570216] [] ? ops_init+0x3a0/0x3a0 [ 35.575630] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 35.582433] [] ? kmem_cache_alloc+0x219/0x290 [ 35.588542] [] copy_net_ns+0xd2/0x190 [ 35.593955] [] create_new_namespaces+0x2f6/0x610 [ 35.600322] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 35.607036] [] SyS_unshare+0x3da/0x700 [ 35.612538] [] ? SyS_clone+0x50/0x50 [ 35.617865] [] ? SyS_read+0x1b0/0x1b0 [ 35.623281] [] ? do_fast_syscall_32+0xd7/0x890 [ 35.629476] [] ? SyS_clone+0x50/0x50 [ 35.634804] [] do_fast_syscall_32+0x314/0x890 [ 35.640917] [] sysenter_flags_fixed+0xd/0x17 [ 35.646936] Code: 65 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 00 3c fe 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 f4 01 00 00 49 8b 1e e8 6d 52 2e fe 48 85 [ 35.673232] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 35.679799] RSP [ 35.683616] ---[ end trace dae1a43af8dad58d ]--- [ 35.688463] Kernel panic - not syncing: Fatal exception [ 35.694312] Dumping ftrace buffer: [ 35.697823] (ftrace buffer empty) [ 35.701497] Kernel Offset: disabled [ 35.705092] Rebooting in 86400 seconds..