[....] Starting file context maintaining daemon:[ 16.610320] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) 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: [ 20.149321] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 20.348236] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.238677] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available) [ 21.401793] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. [ 26.784541] 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 [ 26.935164] IPVS: Creating netns size=2552 id=1 executing program [ 26.973395] IPVS: Creating netns size=2552 id=2 [ 27.002181] IPVS: Creating netns size=2552 id=3 executing program [ 27.029775] IPVS: Creating netns size=2552 id=4 executing program [ 27.058820] IPVS: Creating netns size=2552 id=5 executing program [ 27.088456] IPVS: Creating netns size=2552 id=6 executing program [ 27.119020] IPVS: Creating netns size=2552 id=7 executing program executing program [ 27.150182] IPVS: Creating netns size=2552 id=8 executing program [ 28.324114] IPVS: Creating netns size=2552 id=9 executing program [ 28.354130] IPVS: Creating netns size=2552 id=10 executing program [ 28.397266] IPVS: Creating netns size=2552 id=11 [ 28.429537] IPVS: Creating netns size=2552 id=12 executing program [ 28.461090] IPVS: Creating netns size=2552 id=13 executing program executing program [ 28.494701] IPVS: Creating netns size=2552 id=14 executing program [ 28.539698] IPVS: Creating netns size=2552 id=15 executing program [ 28.574608] IPVS: Creating netns size=2552 id=16 executing program [ 35.086718] pktgen: kernel_thread() failed for cpu 0 [ 35.091898] pktgen: Cannot create thread for cpu 0 (-4) [ 35.097264] pktgen: kernel_thread() failed for cpu 1 [ 35.102367] pktgen: Cannot create thread for cpu 1 (-4) [ 35.107717] pktgen: Initialization failed for all threads [ 35.177655] kasan: CONFIG_KASAN_INLINE enabled [ 35.182139] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.194925] Dumping ftrace buffer: [ 35.198425] (ftrace buffer empty) [ 35.202098] Modules linked in: [ 35.205368] CPU: 1 PID: 3369 Comm: syzkaller034917 Not tainted 4.4.107-g610c835 #12 [ 35.213122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.222440] task: ffff8801d101df00 task.stack: ffff8801cfce8000 [ 35.228458] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 35.237374] RSP: 0018:ffff8801cfcefba8 EFLAGS: 00010202 [ 35.242787] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 35.250023] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 35.257268] RBP: ffff8801cfcefbd8 R08: 0000000000000001 R09: 0000000000000000 [ 35.264508] R10: 0000000000000000 R11: 1ffff10039f9df40 R12: dffffc0000000000 [ 35.271741] R13: ffff8800b36604e8 R14: 0000000000000038 R15: 00000000000000b8 [ 35.278973] FS: 0000000001808880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.287161] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.293009] CR2: 00007efd78afa000 CR3: 00000001d2322000 CR4: 00000000001406e0 [ 35.300247] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.307481] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.314713] Stack: [ 35.316824] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d0515a00 ffff8800b36604e8 [ 35.324764] ffff8800b36604e8 ffff8800b36604e0 ffff8801cfcefc08 ffffffff82f959ce [ 35.332710] ffffffff82f95910 ffffffff843dd460 ffff8801d05164b8 dffffc0000000000 [ 35.340664] Call Trace: [ 35.343217] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 35.349504] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 35.355788] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 35.362853] [] nf_unregister_net_hook+0x2ab/0x350 [ 35.369307] [] netfilter_net_exit+0x40/0xb0 [ 35.375247] [] ? nf_unregister_net_hooks+0x60/0x60 [ 35.381792] [] ops_exit_list.isra.4+0xae/0x150 [ 35.387987] [] setup_net+0x221/0x3e0 [ 35.393315] [] ? ops_init+0x3a0/0x3a0 [ 35.398736] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 35.405539] [] copy_net_ns+0xd2/0x190 [ 35.410955] [] create_new_namespaces+0x2f6/0x610 [ 35.417323] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 35.424040] [] SyS_unshare+0x3da/0x700 [ 35.429540] [] ? SyS_clone+0x50/0x50 [ 35.434869] [] ? SyS_read+0x1b0/0x1b0 [ 35.440283] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 35.446739] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 35.453280] 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 [ 35.479509] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 35.486078] RSP [ 35.489847] ---[ end trace f14e41f869d3b6c4 ]--- [ 35.494629] Kernel panic - not syncing: Fatal exception [ 35.500417] Dumping ftrace buffer: [ 35.503933] (ftrace buffer empty) [ 35.507606] Kernel Offset: disabled [ 35.511197] Rebooting in 86400 seconds..