[ 16.451447] random: sshd: uninitialized urandom read (32 bytes read, 33 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: [ 21.390995] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 21.664485] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 22.503375] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available) [ 22.659861] random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) Warning: Permanently added '10.128.15.237' (ECDSA) to the list of known hosts. [ 28.053759] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program [ 28.174145] IPVS: Creating netns size=2552 id=1 executing program [ 28.211980] IPVS: Creating netns size=2552 id=2 [ 28.241610] IPVS: Creating netns size=2552 id=3 executing program executing program [ 28.292192] IPVS: Creating netns size=2552 id=4 executing program [ 28.322184] IPVS: Creating netns size=2552 id=5 executing program [ 28.352631] IPVS: Creating netns size=2552 id=6 executing program [ 28.384127] IPVS: Creating netns size=2552 id=7 executing program [ 28.416345] IPVS: Creating netns size=2552 id=8 executing program [ 29.641926] IPVS: Creating netns size=2552 id=9 [ 29.683162] IPVS: Creating netns size=2552 id=10 executing program executing program [ 29.715556] IPVS: Creating netns size=2552 id=11 executing program [ 29.748732] IPVS: Creating netns size=2552 id=12 executing program [ 29.791895] IPVS: Creating netns size=2552 id=13 [ 29.826992] IPVS: Creating netns size=2552 id=14 executing program executing program [ 29.860579] IPVS: Creating netns size=2552 id=15 executing program [ 29.907169] IPVS: Creating netns size=2552 id=16 executing program [ 36.345793] pktgen: kernel_thread() failed for cpu 0 [ 36.350993] pktgen: Cannot create thread for cpu 0 (-4) [ 36.356368] pktgen: kernel_thread() failed for cpu 1 [ 36.361478] pktgen: Cannot create thread for cpu 1 (-4) [ 36.366819] pktgen: Initialization failed for all threads [ 36.435371] kasan: CONFIG_KASAN_INLINE enabled [ 36.439861] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.452669] Dumping ftrace buffer: [ 36.456183] (ftrace buffer empty) [ 36.459872] Modules linked in: [ 36.463145] CPU: 1 PID: 3370 Comm: syzkaller843703 Not tainted 4.4.107-g610c835 #4 [ 36.470904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.480226] task: ffff8800b4f45f00 task.stack: ffff8800b0510000 [ 36.486245] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.495188] RSP: 0018:ffff8800b0517b30 EFLAGS: 00010202 [ 36.500602] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 36.508548] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 36.515796] RBP: ffff8800b0517b60 R08: 0000000000000001 R09: 0000000000000000 [ 36.523032] R10: 0000000000000000 R11: 1ffff100160a2f32 R12: dffffc0000000000 [ 36.530276] R13: ffff8801cfbbcea8 R14: 0000000000000038 R15: 00000000000000b8 [ 36.537516] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009dc6840 [ 36.545706] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.551556] CR2: 0000000001d63220 CR3: 00000000b7c3f000 CR4: 00000000001406e0 [ 36.558803] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.566128] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.573363] Stack: [ 36.575478] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800b0570000 ffff8801cfbbcea8 [ 36.583436] ffff8801cfbbcea8 ffff8801cfbbcea0 ffff8800b0517b90 ffffffff82f959ce [ 36.591393] ffffffff82f95910 ffffffff843dd460 ffff8800b0570ab8 dffffc0000000000 [ 36.599348] Call Trace: [ 36.601906] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.608196] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.614491] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.621559] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.628017] [] netfilter_net_exit+0x40/0xb0 [ 36.633953] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.640500] [] ops_exit_list.isra.4+0xae/0x150 [ 36.646697] [] setup_net+0x221/0x3e0 [ 36.652025] [] ? ops_init+0x3a0/0x3a0 [ 36.657447] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.664262] [] ? kmem_cache_alloc+0x219/0x290 [ 36.670383] [] copy_net_ns+0xd2/0x190 [ 36.675810] [] create_new_namespaces+0x2f6/0x610 [ 36.682184] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.688904] [] SyS_unshare+0x3da/0x700 [ 36.694413] [] ? SyS_clone+0x50/0x50 [ 36.699745] [] ? SyS_read+0x1b0/0x1b0 [ 36.705172] [] ? do_fast_syscall_32+0xd7/0x890 [ 36.711395] [] ? SyS_clone+0x50/0x50 [ 36.711406] [] do_fast_syscall_32+0x314/0x890 [ 36.711413] [] sysenter_flags_fixed+0xd/0x17 [ 36.711502] 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 [ 36.711510] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.711512] RSP [ 36.711896] ---[ end trace 3ac853295c582361 ]--- [ 36.711900] Kernel panic - not syncing: Fatal exception [ 36.717180] Dumping ftrace buffer: [ 36.717183] (ftrace buffer empty) [ 36.717185] Kernel Offset: disabled [ 36.779143] Rebooting in 86400 seconds..