[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m[ 16.065474] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) 8[?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: [ 20.770691] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.032960] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 21.807134] random: sshd: uninitialized urandom read (32 bytes read, 91 bits of entropy available) [ 43.391681] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) Warning: Permanently added '10.128.0.53' (ECDSA) to the list of known hosts. [ 48.825816] 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 [ 48.939462] IPVS: Creating netns size=2552 id=1 executing program [ 48.973636] IPVS: Creating netns size=2552 id=2 [ 49.008120] IPVS: Creating netns size=2552 id=3 executing program executing program [ 49.032372] IPVS: Creating netns size=2552 id=4 executing program [ 49.067498] IPVS: Creating netns size=2552 id=5 executing program [ 49.093463] IPVS: Creating netns size=2552 id=6 executing program [ 49.129713] IPVS: Creating netns size=2552 id=7 executing program [ 49.156447] IPVS: Creating netns size=2552 id=8 executing program [ 50.324992] IPVS: Creating netns size=2552 id=9 executing program [ 50.352220] IPVS: Creating netns size=2552 id=10 [ 50.379152] IPVS: Creating netns size=2552 id=11 executing program [ 50.406054] IPVS: Creating netns size=2552 id=12 executing program [ 50.434280] IPVS: Creating netns size=2552 id=13 executing program [ 50.462322] IPVS: Creating netns size=2552 id=14 executing program executing program [ 50.491056] IPVS: Creating netns size=2552 id=15 executing program [ 50.530117] IPVS: Creating netns size=2552 id=16 executing program [ 56.841109] pktgen: kernel_thread() failed for cpu 0 [ 56.846251] pktgen: Cannot create thread for cpu 0 (-4) [ 56.851630] pktgen: kernel_thread() failed for cpu 1 [ 56.856784] pktgen: Cannot create thread for cpu 1 (-4) [ 56.862116] pktgen: Initialization failed for all threads [ 56.922011] kasan: CONFIG_KASAN_INLINE enabled [ 56.926438] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 56.939217] Dumping ftrace buffer: [ 56.942718] (ftrace buffer empty) [ 56.946391] Modules linked in: [ 56.949658] CPU: 0 PID: 3377 Comm: syzkaller001675 Not tainted 4.4.107-g610c835 #12 [ 56.957414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.966746] task: ffff8800b37317c0 task.stack: ffff8800b3488000 [ 56.972771] RIP: 0010:[<ffffffff82f9da40>] [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 [ 56.981685] RSP: 0018:ffff8800b348fba8 EFLAGS: 00010202 [ 56.987097] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 56.994336] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 57.001569] RBP: ffff8800b348fbd8 R08: 0000000000000001 R09: 0000000000000000 [ 57.008804] R10: 0000000000000000 R11: 1ffff10016691f40 R12: dffffc0000000000 [ 57.016039] R13: ffff8801d0902c68 R14: 0000000000000038 R15: 00000000000000b8 [ 57.023273] FS: 0000000000d8c880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 57.031460] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.037305] CR2: 00007fab28c26000 CR3: 00000000b4f36000 CR4: 00000000001406f0 [ 57.044542] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.051777] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.059007] Stack: [ 57.061116] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800b3710000 ffff8801d0902c68 [ 57.069053] ffff8801d0902c68 ffff8801d0902c60 ffff8800b348fc08 ffffffff82f959ce [ 57.076989] ffffffff82f95910 ffffffff843dd460 ffff8800b3710ab8 dffffc0000000000 [ 57.084923] Call Trace: [ 57.087476] [<ffffffff82f9d9b0>] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 57.093763] [<ffffffff82f959ce>] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 57.100044] [<ffffffff82f95910>] ? nf_queue_entry_release_refs+0x150/0x150 [ 57.107107] [<ffffffff82f9172b>] nf_unregister_net_hook+0x2ab/0x350 [ 57.113559] [<ffffffff82f91870>] netfilter_net_exit+0x40/0xb0 [ 57.119500] [<ffffffff82f91830>] ? nf_unregister_net_hooks+0x60/0x60 [ 57.126045] [<ffffffff82e2b85e>] ops_exit_list.isra.4+0xae/0x150 [ 57.132239] [<ffffffff82e2d541>] setup_net+0x221/0x3e0 [ 57.137563] [<ffffffff82e2d320>] ? ops_init+0x3a0/0x3a0 [ 57.142983] [<ffffffff81282f33>] ? rcu_read_lock_sched_held+0x103/0x120 [ 57.149786] [<ffffffff82e2eb12>] copy_net_ns+0xd2/0x190 [ 57.155200] [<ffffffff81190526>] create_new_namespaces+0x2f6/0x610 [ 57.161568] [<ffffffff81190dde>] unshare_nsproxy_namespaces+0xae/0x1e0 [ 57.168282] [<ffffffff81129eda>] SyS_unshare+0x3da/0x700 [ 57.173779] [<ffffffff81129b00>] ? SyS_clone+0x50/0x50 [ 57.179108] [<ffffffff8151f330>] ? SyS_read+0x1b0/0x1b0 [ 57.184523] [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14 [ 57.190977] [<ffffffff83773d36>] entry_SYSCALL_64_fastpath+0x16/0x76 [ 57.197515] 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 [ 57.223761] RIP [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 [ 57.230339] RSP <ffff8800b348fba8> [ 57.234105] ---[ end trace d77c9b310fc14d3a ]--- [ 57.238838] Kernel panic - not syncing: Fatal exception [ 57.244615] Dumping ftrace buffer: [ 57.248123] (ftrace buffer empty) [ 57.251795] Kernel Offset: disabled [ 57.255385] Rebooting in 86400 seconds..