[ 16.142087] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.099216] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.403563] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 23.213355] random: sshd: uninitialized urandom read (32 bytes read, 95 bits of entropy available) [ 26.020972] random: sshd: uninitialized urandom read (32 bytes read, 102 bits of entropy available) Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. [ 31.398205] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.519599] IPVS: Creating netns size=2552 id=1 executing program [ 31.559227] IPVS: Creating netns size=2552 id=2 executing program [ 31.596675] IPVS: Creating netns size=2552 id=3 executing program [ 31.626138] IPVS: Creating netns size=2552 id=4 executing program [ 31.656847] IPVS: Creating netns size=2552 id=5 executing program [ 31.686778] IPVS: Creating netns size=2552 id=6 executing program [ 31.717784] IPVS: Creating netns size=2552 id=7 executing program [ 31.749631] IPVS: Creating netns size=2552 id=8 executing program [ 32.890288] IPVS: Creating netns size=2552 id=9 executing program [ 32.922381] IPVS: Creating netns size=2552 id=10 executing program [ 32.954921] IPVS: Creating netns size=2552 id=11 executing program [ 32.989169] IPVS: Creating netns size=2552 id=12 executing program [ 33.022820] IPVS: Creating netns size=2552 id=13 executing program [ 33.057528] IPVS: Creating netns size=2552 id=14 executing program [ 33.091442] IPVS: Creating netns size=2552 id=15 executing program [ 33.125860] IPVS: Creating netns size=2552 id=16 [ 40.372499] pktgen: kernel_thread() failed for cpu 0 [ 40.377824] pktgen: Cannot create thread for cpu 0 (-4) [ 40.383190] pktgen: kernel_thread() failed for cpu 1 [ 40.388324] pktgen: Cannot create thread for cpu 1 (-4) [ 40.393664] pktgen: Initialization failed for all threads [ 40.453330] kasan: CONFIG_KASAN_INLINE enabled [ 40.457770] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.470553] Dumping ftrace buffer: [ 40.474056] (ftrace buffer empty) [ 40.477741] Modules linked in: [ 40.481018] CPU: 1 PID: 3369 Comm: syzkaller594087 Not tainted 4.4.107-g610c835 #4 [ 40.488688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.498010] task: ffff8800b44ec740 task.stack: ffff8801cfaa8000 [ 40.504028] RIP: 0010:[<ffffffff82f9da40>] [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 [ 40.512946] RSP: 0018:ffff8801cfaafb30 EFLAGS: 00010202 [ 40.518359] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 40.525593] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 40.532828] RBP: ffff8801cfaafb60 R08: 0000000000000001 R09: 0000000000000000 [ 40.540063] R10: 0000000000000000 R11: 1ffff10039f55f32 R12: dffffc0000000000 [ 40.547309] R13: ffff8800b469e128 R14: 0000000000000038 R15: 00000000000000b8 [ 40.554545] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009544840 [ 40.562737] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 40.568584] CR2: 00007fda4332b000 CR3: 00000001d104b000 CR4: 00000000001406e0 [ 40.575823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.583057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.590300] Stack: [ 40.592414] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d02b9e00 ffff8800b469e128 [ 40.600397] ffff8800b469e128 ffff8800b469e120 ffff8801cfaafb90 ffffffff82f959ce [ 40.608342] ffffffff82f95910 ffffffff843dd460 ffff8801d02ba8b8 dffffc0000000000 [ 40.616298] Call Trace: [ 40.618853] [<ffffffff82f9d9b0>] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 40.625143] [<ffffffff82f959ce>] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 40.631435] [<ffffffff82f95910>] ? nf_queue_entry_release_refs+0x150/0x150 [ 40.638501] [<ffffffff82f9172b>] nf_unregister_net_hook+0x2ab/0x350 [ 40.644957] [<ffffffff82f91870>] netfilter_net_exit+0x40/0xb0 [ 40.650900] [<ffffffff82f91830>] ? nf_unregister_net_hooks+0x60/0x60 [ 40.657447] [<ffffffff82e2b85e>] ops_exit_list.isra.4+0xae/0x150 [ 40.663643] [<ffffffff82e2d541>] setup_net+0x221/0x3e0 [ 40.668971] [<ffffffff82e2d320>] ? ops_init+0x3a0/0x3a0 [ 40.674388] [<ffffffff81282f33>] ? rcu_read_lock_sched_held+0x103/0x120 [ 40.681203] [<ffffffff814f6c59>] ? kmem_cache_alloc+0x219/0x290 [ 40.687315] [<ffffffff82e2eb12>] copy_net_ns+0xd2/0x190 [ 40.692730] [<ffffffff81190526>] create_new_namespaces+0x2f6/0x610 [ 40.699100] [<ffffffff81190dde>] unshare_nsproxy_namespaces+0xae/0x1e0 [ 40.705817] [<ffffffff81129eda>] SyS_unshare+0x3da/0x700 [ 40.711317] [<ffffffff81129b00>] ? SyS_clone+0x50/0x50 [ 40.716644] [<ffffffff8151f330>] ? SyS_read+0x1b0/0x1b0 [ 40.722059] [<ffffffff81006b47>] ? do_fast_syscall_32+0xd7/0x890 [ 40.728254] [<ffffffff81129b00>] ? SyS_clone+0x50/0x50 [ 40.733580] [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 [ 40.739690] [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17 [ 40.745709] 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 [ 40.772098] RIP [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 [ 40.778670] RSP <ffff8801cfaafb30> [ 40.782422] ---[ end trace 1702bb13f1054c60 ]--- [ 40.787171] Kernel panic - not syncing: Fatal exception [ 40.792962] Dumping ftrace buffer: [ 40.796469] (ftrace buffer empty) [ 40.800155] Kernel Offset: disabled [ 40.803746] Rebooting in 86400 seconds..