[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.770655] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.406978] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.770117] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.571253] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available) [ 22.741267] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. [ 28.125638] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.235916] IPVS: Creating netns size=2552 id=1 executing program [ 28.259850] IPVS: Creating netns size=2552 id=2 executing program [ 28.295382] IPVS: Creating netns size=2552 id=3 executing program [ 28.320810] IPVS: Creating netns size=2552 id=4 executing program [ 28.356142] IPVS: Creating netns size=2552 id=5 executing program [ 28.381173] IPVS: Creating netns size=2552 id=6 executing program [ 28.407489] IPVS: Creating netns size=2552 id=7 executing program [ 28.443588] IPVS: Creating netns size=2552 id=8 executing program [ 29.511350] IPVS: Creating netns size=2552 id=9 executing program [ 29.557516] IPVS: Creating netns size=2552 id=10 executing program [ 29.594201] IPVS: Creating netns size=2552 id=11 executing program [ 29.632474] IPVS: Creating netns size=2552 id=12 executing program [ 29.670862] IPVS: Creating netns size=2552 id=13 executing program [ 29.709124] IPVS: Creating netns size=2552 id=14 executing program [ 29.738334] IPVS: Creating netns size=2552 id=15 executing program [ 29.777871] IPVS: Creating netns size=2552 id=16 executing program [ 29.817723] IPVS: Creating netns size=2552 id=17 [ 36.916435] pktgen: kernel_thread() failed for cpu 0 [ 36.921592] pktgen: Cannot create thread for cpu 0 (-4) [ 36.926976] pktgen: kernel_thread() failed for cpu 1 [ 36.932108] pktgen: Cannot create thread for cpu 1 (-4) [ 36.937447] pktgen: Initialization failed for all threads [ 37.038226] kasan: CONFIG_KASAN_INLINE enabled [ 37.042711] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.055498] Dumping ftrace buffer: [ 37.059000] (ftrace buffer empty) [ 37.062675] Modules linked in: [ 37.065946] CPU: 1 PID: 3372 Comm: syzkaller711277 Not tainted 4.4.111-g3301b55 #24 [ 37.073702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.083029] task: ffff8800b401c740 task.stack: ffff8800b0940000 [ 37.089053] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.097979] RSP: 0018:ffff8800b0947ba8 EFLAGS: 00010202 [ 37.103394] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f389 [ 37.110653] RDX: 0000000000000000 RSI: ffffffff839fd920 RDI: ffffffff847ea088 [ 37.117887] RBP: ffff8800b0947bd8 R08: 0000000000000001 R09: 0000000000000000 [ 37.125121] R10: 0000000000000000 R11: 1ffff10016128f40 R12: dffffc0000000000 [ 37.132362] R13: ffff8800b43a5248 R14: 0000000000000038 R15: 00000000000000b8 [ 37.139600] FS: 0000000000cd6880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 37.147792] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.153639] CR2: 00007fdacf31e000 CR3: 00000000b0934000 CR4: 0000000000160670 [ 37.160875] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.168111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.175344] Stack: [ 37.177457] ffffffff82f9f300 ffffffff83cc5920 ffff8800b0948000 ffff8800b43a5248 [ 37.185411] ffff8800b43a5248 ffff8800b43a5240 ffff8800b0947c08 ffffffff82f9724e [ 37.193355] ffffffff82f97190 ffffffff843e2760 ffff8800b0948ab8 dffffc0000000000 [ 37.201302] Call Trace: [ 37.203863] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 37.210152] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 37.216434] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 37.223501] [] nf_unregister_net_hook+0x2ab/0x350 [ 37.229956] [] netfilter_net_exit+0x40/0xb0 [ 37.235891] [] ? nf_unregister_net_hooks+0x60/0x60 [ 37.242445] [] ops_exit_list.isra.4+0xae/0x150 [ 37.248643] [] setup_net+0x221/0x3e0 [ 37.253974] [] ? ops_init+0x3a0/0x3a0 [ 37.259390] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 37.266206] [] copy_net_ns+0xd2/0x190 [ 37.271631] [] create_new_namespaces+0x2f6/0x610 [ 37.278008] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 37.284736] [] SyS_unshare+0x3da/0x700 [ 37.290235] [] ? SyS_clone+0x50/0x50 [ 37.295574] [] ? SyS_read+0x1b0/0x1b0 [ 37.300991] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 37.307454] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 37.313995] 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 [ 37.340322] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.346896] RSP [ 37.350658] ---[ end trace 42200a4509878b41 ]--- [ 37.355403] Kernel panic - not syncing: Fatal exception [ 37.361171] Dumping ftrace buffer: [ 37.364678] (ftrace buffer empty) [ 37.368353] Kernel Offset: disabled [ 37.371944] Rebooting in 86400 seconds..