[ 16.404177] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.289686] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 20.508993] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.342162] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) [ 21.502728] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available) Warning: Permanently added '10.128.15.233' (ECDSA) to the list of known hosts. [ 26.862578] random: sshd: uninitialized urandom read (32 bytes read, 110 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.975389] IPVS: Creating netns size=2552 id=1 executing program [ 27.013589] IPVS: Creating netns size=2552 id=2 executing program [ 27.062482] IPVS: Creating netns size=2552 id=3 executing program [ 27.102035] IPVS: Creating netns size=2552 id=4 executing program [ 27.142837] IPVS: Creating netns size=2552 id=5 executing program [ 27.182805] IPVS: Creating netns size=2552 id=6 executing program [ 27.223934] IPVS: Creating netns size=2552 id=7 executing program [ 27.255731] IPVS: Creating netns size=2552 id=8 executing program [ 28.444783] IPVS: Creating netns size=2552 id=9 executing program [ 28.477342] IPVS: Creating netns size=2552 id=10 executing program [ 28.511007] IPVS: Creating netns size=2552 id=11 executing program [ 28.554303] IPVS: Creating netns size=2552 id=12 executing program [ 28.588085] IPVS: Creating netns size=2552 id=13 executing program [ 28.622247] IPVS: Creating netns size=2552 id=14 executing program [ 28.666857] IPVS: Creating netns size=2552 id=15 executing program [ 28.712026] IPVS: Creating netns size=2552 id=16 executing program [ 28.747736] IPVS: Creating netns size=2552 id=17 [ 36.086532] pktgen: kernel_thread() failed for cpu 0 [ 36.091666] pktgen: Cannot create thread for cpu 0 (-4) [ 36.097030] pktgen: kernel_thread() failed for cpu 1 [ 36.102176] pktgen: Cannot create thread for cpu 1 (-4) [ 36.107513] pktgen: Initialization failed for all threads [ 36.167702] kasan: CONFIG_KASAN_INLINE enabled [ 36.172150] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.184937] Dumping ftrace buffer: [ 36.188440] (ftrace buffer empty) [ 36.192116] Modules linked in: [ 36.195386] CPU: 1 PID: 3369 Comm: syzkaller348626 Not tainted 4.4.107-g610c835 #4 [ 36.203055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.212379] task: ffff8801d55f17c0 task.stack: ffff8800b0fe0000 [ 36.218400] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.227319] RSP: 0018:ffff8800b0fe7b30 EFLAGS: 00010202 [ 36.232732] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 36.239965] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 36.247199] RBP: ffff8800b0fe7b60 R08: 0000000000000001 R09: 0000000000000000 [ 36.254434] R10: 0000000000000000 R11: 1ffff100161fcf32 R12: dffffc0000000000 [ 36.261670] R13: ffff8800b3f3ab48 R14: 0000000000000038 R15: 00000000000000b8 [ 36.268906] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008596840 [ 36.277096] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.282942] CR2: 00007f4a7c5c5000 CR3: 00000000b42e0000 CR4: 00000000001406e0 [ 36.290180] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.297415] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.304646] Stack: [ 36.306759] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800b43b9e00 ffff8800b3f3ab48 [ 36.314702] ffff8800b3f3ab48 ffff8800b3f3ab40 ffff8800b0fe7b90 ffffffff82f959ce [ 36.323253] ffffffff82f95910 ffffffff843dd460 ffff8800b43ba8b8 dffffc0000000000 [ 36.331197] Call Trace: [ 36.333752] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.340043] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.346330] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.353395] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.359854] [] netfilter_net_exit+0x40/0xb0 [ 36.365788] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.372344] [] ops_exit_list.isra.4+0xae/0x150 [ 36.378555] [] setup_net+0x221/0x3e0 [ 36.383889] [] ? ops_init+0x3a0/0x3a0 [ 36.389305] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.396113] [] ? kmem_cache_alloc+0x219/0x290 [ 36.402222] [] copy_net_ns+0xd2/0x190 [ 36.407643] [] create_new_namespaces+0x2f6/0x610 [ 36.414013] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.420736] [] SyS_unshare+0x3da/0x700 [ 36.426238] [] ? SyS_clone+0x50/0x50 [ 36.431575] [] ? SyS_read+0x1b0/0x1b0 [ 36.436991] [] ? do_fast_syscall_32+0xd7/0x890 [ 36.443190] [] ? SyS_clone+0x50/0x50 [ 36.448521] [] do_fast_syscall_32+0x314/0x890 [ 36.454631] [] sysenter_flags_fixed+0xd/0x17 [ 36.460649] 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 [ 36.486925] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.493498] RSP [ 36.497487] ---[ end trace 6f23c7b92add96bc ]--- [ 36.502240] Kernel panic - not syncing: Fatal exception [ 36.508041] Dumping ftrace buffer: [ 36.511547] (ftrace buffer empty) [ 36.515224] Kernel Offset: disabled [ 36.518815] Rebooting in 86400 seconds..