[ 16.094828] 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: [ 20.883349] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.167292] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.986281] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available) [ 22.158045] random: sshd: uninitialized urandom read (32 bytes read, 90 bits of entropy available) Warning: Permanently added '10.128.15.217' (ECDSA) to the list of known hosts. [ 27.525881] random: sshd: uninitialized urandom read (32 bytes read, 96 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.636488] IPVS: Creating netns size=2552 id=1 executing program [ 27.671331] IPVS: Creating netns size=2552 id=2 executing program [ 27.714353] IPVS: Creating netns size=2552 id=3 executing program [ 27.749221] IPVS: Creating netns size=2552 id=4 executing program [ 27.782799] IPVS: Creating netns size=2552 id=5 executing program [ 27.826630] IPVS: Creating netns size=2552 id=6 executing program [ 27.861748] IPVS: Creating netns size=2552 id=7 executing program [ 27.897561] IPVS: Creating netns size=2552 id=8 executing program [ 29.124809] IPVS: Creating netns size=2552 id=9 executing program [ 29.169718] IPVS: Creating netns size=2552 id=10 executing program [ 29.207675] IPVS: Creating netns size=2552 id=11 executing program [ 29.245604] IPVS: Creating netns size=2552 id=12 executing program [ 29.295678] IPVS: Creating netns size=2552 id=13 executing program [ 29.335606] IPVS: Creating netns size=2552 id=14 executing program [ 29.375089] IPVS: Creating netns size=2552 id=15 executing program [ 29.414748] IPVS: Creating netns size=2552 id=16 [ 35.935689] pktgen: kernel_thread() failed for cpu 0 [ 35.940887] pktgen: Cannot create thread for cpu 0 (-4) [ 35.946264] pktgen: kernel_thread() failed for cpu 1 [ 35.951396] pktgen: Cannot create thread for cpu 1 (-4) [ 35.956737] pktgen: Initialization failed for all threads [ 36.025341] kasan: CONFIG_KASAN_INLINE enabled [ 36.029807] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.042585] Dumping ftrace buffer: [ 36.046087] (ftrace buffer empty) [ 36.049764] Modules linked in: [ 36.053030] CPU: 1 PID: 3360 Comm: syzkaller787534 Not tainted 4.4.111-g3301b55 #17 [ 36.060788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.070109] task: ffff8800b824c740 task.stack: ffff8801cfe48000 [ 36.076129] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.085048] RSP: 0018:ffff8801cfe4f920 EFLAGS: 00010202 [ 36.090459] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f389 [ 36.097699] RDX: 0000000000000000 RSI: ffffffff839fd920 RDI: ffffffff847ea088 [ 36.104936] RBP: ffff8801cfe4f950 R08: 0000000000000001 R09: 0000000000000000 [ 36.112172] R10: 0000000000000000 R11: 1ffff10039fc9ef0 R12: dffffc0000000000 [ 36.119409] R13: ffff8801cfe9e3c8 R14: 0000000000000038 R15: 00000000000000b8 [ 36.126646] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009237840 [ 36.134838] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.140686] CR2: 00007eff28103000 CR3: 00000001d27b6000 CR4: 0000000000160670 [ 36.147924] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.155165] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.162407] Stack: [ 36.164521] ffffffff82f9f300 ffffffff83cc5920 ffff8801d007da00 ffff8801cfe9e3c8 [ 36.172493] ffff8801cfe9e3c8 ffff8801cfe9e3c0 ffff8801cfe4f980 ffffffff82f9724e [ 36.180443] ffffffff82f97190 ffffffff843e2760 ffff8801d007e4b8 dffffc0000000000 [ 36.188395] Call Trace: [ 36.190949] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.197234] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.203525] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.210591] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.217049] [] netfilter_net_exit+0x40/0xb0 [ 36.222989] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.229539] [] ops_exit_list.isra.4+0xae/0x150 [ 36.235735] [] setup_net+0x221/0x3e0 [ 36.241073] [] ? ops_init+0x3a0/0x3a0 [ 36.246504] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.253320] [] ? kmem_cache_alloc+0x219/0x290 [ 36.259442] [] copy_net_ns+0xd2/0x190 [ 36.264865] [] create_new_namespaces+0x2f6/0x610 [ 36.271234] [] copy_namespaces+0x291/0x320 [ 36.277080] [] ? copy_namespaces+0x3e/0x320 [ 36.283031] [] copy_process+0x1d98/0x6120 [ 36.288794] [] ? __cleanup_sighand+0x50/0x50 [ 36.294817] [] ? __fsnotify_parent+0xbc/0x340 [ 36.300933] [] ? fsnotify+0x5ad/0xee0 [ 36.306349] [] ? fsnotify+0xee0/0xee0 [ 36.311767] [] _do_fork+0x151/0xe00 [ 36.317007] [] ? fork_idle+0x270/0x270 [ 36.322519] [] ? SyS_write+0x13d/0x1b0 [ 36.328021] [] ? SyS_read+0x1b0/0x1b0 [ 36.333436] [] SyS_clone+0x37/0x50 [ 36.338591] [] ? entry_INT80_compat+0x90/0x90 [ 36.344702] [] do_fast_syscall_32+0x314/0x890 [ 36.350814] [] sysenter_flags_fixed+0xd/0x17 [ 36.356841] 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 [ 36.358876] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.358890] RSP [ 36.363607] ---[ end trace 2ca4e940697acbcb ]--- [ 36.363611] Kernel panic - not syncing: Fatal exception [ 36.364142] Dumping ftrace buffer: [ 36.364145] (ftrace buffer empty) [ 36.364147] Kernel Offset: disabled [ 36.409139] Rebooting in 86400 seconds..