[ 16.265832] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.535953] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.867863] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 22.647566] random: sshd: uninitialized urandom read (32 bytes read, 94 bits of entropy available) [ 22.828939] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available) Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. [ 28.209272] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) executing program [ 28.324450] IPVS: Creating netns size=2552 id=1 executing program [ 28.350230] IPVS: Creating netns size=2552 id=2 executing program [ 28.376801] IPVS: Creating netns size=2552 id=3 executing program [ 28.404280] IPVS: Creating netns size=2552 id=4 executing program [ 28.432094] IPVS: Creating netns size=2552 id=5 executing program [ 28.461028] IPVS: Creating netns size=2552 id=6 executing program [ 28.489906] IPVS: Creating netns size=2552 id=7 executing program [ 28.522023] IPVS: Creating netns size=2552 id=8 [ 28.553096] IPVS: Creating netns size=2552 id=9 executing program [ 28.594594] IPVS: Creating netns size=2552 id=10 executing program [ 28.637693] IPVS: Creating netns size=2552 id=11 executing program [ 28.680932] IPVS: Creating netns size=2552 id=12 executing program [ 28.724495] IPVS: Creating netns size=2552 id=13 executing program [ 28.759604] IPVS: Creating netns size=2552 id=14 executing program [ 28.814102] IPVS: Creating netns size=2552 id=15 executing program [ 28.859675] IPVS: Creating netns size=2552 id=16 executing program [ 30.041366] IPVS: Creating netns size=2552 id=17 executing program [ 30.086803] IPVS: Creating netns size=2552 id=18 executing program [ 30.132258] IPVS: Creating netns size=2552 id=19 [ 30.169754] IPVS: Creating netns size=2552 id=20 executing program [ 30.205826] IPVS: Creating netns size=2552 id=21 executing program executing program [ 30.253617] IPVS: Creating netns size=2552 id=22 executing program [ 30.302406] IPVS: Creating netns size=2552 id=23 executing program [ 30.341059] IPVS: Creating netns size=2552 id=24 executing program [ 36.864274] pktgen: kernel_thread() failed for cpu 0 [ 36.869475] pktgen: Cannot create thread for cpu 0 (-4) [ 36.874844] pktgen: kernel_thread() failed for cpu 1 [ 36.879979] pktgen: Cannot create thread for cpu 1 (-4) [ 36.885396] pktgen: Initialization failed for all threads [ 36.953051] kasan: CONFIG_KASAN_INLINE enabled [ 36.957515] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.970303] Dumping ftrace buffer: [ 36.973805] (ftrace buffer empty) [ 36.977481] Modules linked in: [ 36.980750] CPU: 0 PID: 3385 Comm: syzkaller316870 Not tainted 4.4.107-g610c835 #12 [ 36.988506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.997837] task: ffff8801cfbb97c0 task.stack: ffff8800b3978000 [ 37.003859] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.012779] RSP: 0018:ffff8800b397fba8 EFLAGS: 00010202 [ 37.018191] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 37.025429] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 37.032664] RBP: ffff8800b397fbd8 R08: 0000000000000001 R09: 0000000000000000 [ 37.039899] R10: 0000000000000000 R11: 1ffff1001672ff40 R12: dffffc0000000000 [ 37.047134] R13: ffff8801cfee1668 R14: 0000000000000038 R15: 00000000000000b8 [ 37.054368] FS: 00000000026b9880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 37.062559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.068405] CR2: 00007ff37fe86000 CR3: 00000000b4e99000 CR4: 00000000001406f0 [ 37.075643] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.082904] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.090136] Stack: [ 37.092257] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801cc2e9e00 ffff8801cfee1668 [ 37.100205] ffff8801cfee1668 ffff8801cfee1660 ffff8800b397fc08 ffffffff82f959ce [ 37.108156] ffffffff82f95910 ffffffff843dd460 ffff8801cc2ea8b8 dffffc0000000000 [ 37.116097] Call Trace: [ 37.118652] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 37.124935] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 37.131220] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 37.138284] [] nf_unregister_net_hook+0x2ab/0x350 [ 37.144741] [] netfilter_net_exit+0x40/0xb0 [ 37.150679] [] ? nf_unregister_net_hooks+0x60/0x60 [ 37.157225] [] ops_exit_list.isra.4+0xae/0x150 [ 37.163421] [] setup_net+0x221/0x3e0 [ 37.168749] [] ? ops_init+0x3a0/0x3a0 [ 37.174167] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 37.180974] [] copy_net_ns+0xd2/0x190 [ 37.186389] [] create_new_namespaces+0x2f6/0x610 [ 37.192758] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 37.199476] [] SyS_unshare+0x3da/0x700 [ 37.204975] [] ? SyS_clone+0x50/0x50 [ 37.210305] [] ? SyS_read+0x1b0/0x1b0 [ 37.215726] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 37.222183] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 37.228724] 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 [ 37.255007] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.261580] RSP [ 37.265493] ---[ end trace 1bb5a4c8c7f35ae7 ]--- [ 37.270228] Kernel panic - not syncing: Fatal exception [ 37.275599] Dumping ftrace buffer: [ 37.279109] (ftrace buffer empty) [ 37.282793] Kernel Offset: disabled [ 37.286383] Rebooting in 86400 seconds..