[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.975861] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.545629] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 20.850561] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 21.674989] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) [ 21.843082] random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. [ 27.242698] random: sshd: uninitialized urandom read (32 bytes read, 113 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.362187] IPVS: Creating netns size=2552 id=1 executing program [ 27.389503] IPVS: Creating netns size=2552 id=2 executing program [ 27.425474] IPVS: Creating netns size=2552 id=3 executing program [ 27.451999] IPVS: Creating netns size=2552 id=4 executing program [ 27.480936] IPVS: Creating netns size=2552 id=5 executing program [ 27.516716] IPVS: Creating netns size=2552 id=6 executing program [ 27.555022] IPVS: Creating netns size=2552 id=7 executing program [ 27.584421] IPVS: Creating netns size=2552 id=8 executing program [ 28.636458] IPVS: Creating netns size=2552 id=9 executing program [ 28.673825] IPVS: Creating netns size=2552 id=10 executing program [ 28.711589] IPVS: Creating netns size=2552 id=11 executing program [ 28.739731] IPVS: Creating netns size=2552 id=12 executing program [ 28.779765] IPVS: Creating netns size=2552 id=13 executing program [ 28.809482] IPVS: Creating netns size=2552 id=14 executing program [ 28.839773] IPVS: Creating netns size=2552 id=15 executing program [ 28.879078] IPVS: Creating netns size=2552 id=16 executing program [ 28.919040] IPVS: Creating netns size=2552 id=17 [ 36.175353] pktgen: kernel_thread() failed for cpu 0 [ 36.180546] pktgen: Cannot create thread for cpu 0 (-4) [ 36.187271] pktgen: kernel_thread() failed for cpu 1 [ 36.192430] pktgen: Cannot create thread for cpu 1 (-4) [ 36.197795] pktgen: Initialization failed for all threads [ 36.273966] kasan: CONFIG_KASAN_INLINE enabled [ 36.278489] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.291278] Dumping ftrace buffer: [ 36.294779] (ftrace buffer empty) [ 36.298455] Modules linked in: [ 36.301726] CPU: 0 PID: 3362 Comm: syzkaller230864 Not tainted 4.4.110-g618a510 #22 [ 36.309501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.318820] task: ffff8801d046c740 task.stack: ffff8800b0ce8000 [ 36.324837] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.333764] RSP: 0018:ffff8800b0cefba8 EFLAGS: 00010202 [ 36.339177] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f129 [ 36.346411] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea040 [ 36.353645] RBP: ffff8800b0cefbd8 R08: 0000000000000001 R09: 0000000000000000 [ 36.360879] R10: 0000000000000000 R11: 1ffff1001619df40 R12: dffffc0000000000 [ 36.368114] R13: ffff8801cf121008 R14: 0000000000000038 R15: 00000000000000b8 [ 36.375349] FS: 00000000014f7880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 36.383538] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.389386] CR2: 00007feebe684000 CR3: 00000000b451e000 CR4: 0000000000160670 [ 36.396624] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.403861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.411093] Stack: [ 36.413204] ffffffff82f9f0a0 ffffffff83cc5820 ffff8800b0cf0000 ffff8801cf121008 [ 36.421146] ffff8801cf121008 ffff8801cf121000 ffff8800b0cefc08 ffffffff82f96fee [ 36.429089] ffffffff82f96f30 ffffffff843e2720 ffff8800b0cf0ab8 dffffc0000000000 [ 36.437047] Call Trace: [ 36.439601] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.445883] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.452166] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.459230] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.465687] [] netfilter_net_exit+0x40/0xb0 [ 36.471622] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.478167] [] ops_exit_list.isra.4+0xae/0x150 [ 36.484362] [] setup_net+0x221/0x3e0 [ 36.489689] [] ? ops_init+0x3a0/0x3a0 [ 36.495104] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.501917] [] copy_net_ns+0xd2/0x190 [ 36.507336] [] create_new_namespaces+0x2f6/0x610 [ 36.513707] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.520426] [] SyS_unshare+0x3da/0x700 [ 36.525926] [] ? SyS_clone+0x50/0x50 [ 36.531256] [] ? SyS_read+0x1b0/0x1b0 [ 36.536679] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 36.543138] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 36.549677] Code: aa 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 17 0b 3c fe 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 f4 01 00 00 49 8b 1e e8 7d 5c 2e fe 48 85 [ 36.575957] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.582527] RSP [ 36.586532] ---[ end trace 0cb23b6633ad334b ]--- [ 36.591268] Kernel panic - not syncing: Fatal exception [ 36.597060] Dumping ftrace buffer: [ 36.600573] (ftrace buffer empty) [ 36.604248] Kernel Offset: disabled [ 36.607838] Rebooting in 86400 seconds..