[....] Starting file context mai[ 16.424790] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) ntaining 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: [ 20.648786] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.073255] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.695357] random: sshd: uninitialized urandom read (32 bytes read, 61 bits of entropy available) [ 21.875541] random: sshd: uninitialized urandom read (32 bytes read, 65 bits of entropy available) Warning: Permanently added '10.128.0.11' (ECDSA) to the list of known hosts. [ 27.282087] random: sshd: uninitialized urandom read (32 bytes read, 73 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.393346] IPVS: Creating netns size=2552 id=1 executing program [ 27.423068] IPVS: Creating netns size=2552 id=2 executing program [ 27.462702] IPVS: Creating netns size=2552 id=3 executing program [ 27.492775] IPVS: Creating netns size=2552 id=4 executing program [ 27.523047] IPVS: Creating netns size=2552 id=5 executing program [ 27.553910] IPVS: Creating netns size=2552 id=6 executing program [ 27.585752] IPVS: Creating netns size=2552 id=7 executing program [ 27.617213] IPVS: Creating netns size=2552 id=8 executing program [ 28.781586] IPVS: Creating netns size=2552 id=9 executing program [ 28.824045] IPVS: Creating netns size=2552 id=10 executing program [ 28.865884] IPVS: Creating netns size=2552 id=11 executing program [ 28.901607] IPVS: Creating netns size=2552 id=12 executing program [ 28.945689] IPVS: Creating netns size=2552 id=13 executing program [ 28.980184] IPVS: Creating netns size=2552 id=14 executing program [ 29.013647] IPVS: Creating netns size=2552 id=15 executing program [ 29.057915] IPVS: Creating netns size=2552 id=16 [ 36.522666] pktgen: kernel_thread() failed for cpu 0 [ 36.527887] pktgen: Cannot create thread for cpu 0 (-4) [ 36.533272] pktgen: kernel_thread() failed for cpu 1 [ 36.539152] pktgen: Cannot create thread for cpu 1 (-4) [ 36.544500] pktgen: Initialization failed for all threads [ 36.613521] kasan: CONFIG_KASAN_INLINE enabled [ 36.617966] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.629506] Dumping ftrace buffer: [ 36.629510] (ftrace buffer empty) [ 36.629514] Modules linked in: [ 36.629522] CPU: 1 PID: 3368 Comm: syzkaller255120 Not tainted 4.4.107-g610c835 #4 [ 36.629525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.629529] task: ffff8800b402df00 task.stack: ffff8801d0660000 [ 36.629545] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.629548] RSP: 0018:ffff8801d0667b30 EFLAGS: 00010202 [ 36.629552] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 36.629555] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 36.629558] RBP: ffff8801d0667b60 R08: 0000000000000001 R09: 0000000000000000 [ 36.629562] R10: 0000000000000000 R11: 1ffff1003a0ccf32 R12: dffffc0000000000 [ 36.629566] R13: ffff8800b4baa9c8 R14: 0000000000000038 R15: 00000000000000b8 [ 36.629571] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000086a2840 [ 36.629574] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.629578] CR2: 00000000024f9d08 CR3: 00000001d062d000 CR4: 00000000001406e0 [ 36.629584] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.629587] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.629588] Stack: [ 36.629596] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d5088000 ffff8800b4baa9c8 [ 36.629603] ffff8800b4baa9c8 ffff8800b4baa9c0 ffff8801d0667b90 ffffffff82f959ce [ 36.629610] ffffffff82f95910 ffffffff843dd460 ffff8801d5088ab8 dffffc0000000000 [ 36.629612] Call Trace: [ 36.629618] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.629628] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.629635] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.629643] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.629649] [] netfilter_net_exit+0x40/0xb0 [ 36.629655] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.629665] [] ops_exit_list.isra.4+0xae/0x150 [ 36.629671] [] setup_net+0x221/0x3e0 [ 36.629677] [] ? ops_init+0x3a0/0x3a0 [ 36.629688] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.629696] [] ? kmem_cache_alloc+0x219/0x290 [ 36.629702] [] copy_net_ns+0xd2/0x190 [ 36.629710] [] create_new_namespaces+0x2f6/0x610 [ 36.629715] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.629723] [] SyS_unshare+0x3da/0x700 [ 36.629728] [] ? SyS_clone+0x50/0x50 [ 36.629736] [] ? SyS_read+0x1b0/0x1b0 [ 36.629745] [] ? do_fast_syscall_32+0xd7/0x890 [ 36.629750] [] ? SyS_clone+0x50/0x50 [ 36.629755] [] do_fast_syscall_32+0x314/0x890 [ 36.629765] [] sysenter_flags_fixed+0xd/0x17 [ 36.629853] 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 [ 36.629859] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.629861] RSP [ 36.630138] ---[ end trace ac6f0e981f2c507f ]--- [ 36.630142] Kernel panic - not syncing: Fatal exception [ 36.631021] Dumping ftrace buffer: [ 36.631023] (ftrace buffer empty) [ 36.631027] Kernel Offset: disabled [ 36.954554] Rebooting in 86400 seconds..