[ 16.551755] 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. [ 16.780385] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [ 17.039716] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.870447] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) [ 29.905359] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available) Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. [ 35.320983] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program [ 35.433469] IPVS: Creating netns size=2552 id=1 [ 35.458546] IPVS: Creating netns size=2552 id=2 executing program [ 35.484108] IPVS: Creating netns size=2552 id=3 [ 35.509376] IPVS: Creating netns size=2552 id=4 executing program executing program executing program [ 35.535896] IPVS: Creating netns size=2552 id=5 executing program [ 35.572067] IPVS: Creating netns size=2552 id=6 executing program [ 35.599043] IPVS: Creating netns size=2552 id=7 executing program [ 35.636589] IPVS: Creating netns size=2552 id=8 executing program [ 36.848817] IPVS: Creating netns size=2552 id=9 [ 36.878566] IPVS: Creating netns size=2552 id=10 executing program [ 36.905397] IPVS: Creating netns size=2552 id=11 executing program [ 36.933358] IPVS: Creating netns size=2552 id=12 executing program executing program [ 36.961631] IPVS: Creating netns size=2552 id=13 executing program [ 37.001387] IPVS: Creating netns size=2552 id=14 executing program [ 37.031974] IPVS: Creating netns size=2552 id=15 executing program [ 37.062236] IPVS: Creating netns size=2552 id=16 executing program [ 43.242850] pktgen: kernel_thread() failed for cpu 0 [ 43.248037] pktgen: Cannot create thread for cpu 0 (-4) [ 43.253523] pktgen: kernel_thread() failed for cpu 1 [ 43.258689] pktgen: Cannot create thread for cpu 1 (-4) [ 43.264027] pktgen: Initialization failed for all threads [ 43.332868] kasan: CONFIG_KASAN_INLINE enabled [ 43.337354] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.350154] Dumping ftrace buffer: [ 43.353659] (ftrace buffer empty) [ 43.357335] Modules linked in: [ 43.360618] CPU: 1 PID: 3382 Comm: syzkaller683318 Not tainted 4.4.107-g610c835 #12 [ 43.368386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.377708] task: ffff8800b3bf8000 task.stack: ffff8800b3a40000 [ 43.383728] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 43.392645] RSP: 0018:ffff8800b3a47ba8 EFLAGS: 00010202 [ 43.398059] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 43.405296] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 43.412534] RBP: ffff8800b3a47bd8 R08: 0000000000000001 R09: 0000000000000000 [ 43.419780] R10: 0000000000000000 R11: 1ffff10016748f40 R12: dffffc0000000000 [ 43.427018] R13: ffff8800b3616428 R14: 0000000000000038 R15: 00000000000000b8 [ 43.434259] FS: 000000000076c880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 43.442460] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.448308] CR2: 00007fd52545c000 CR3: 00000000b637e000 CR4: 00000000001406e0 [ 43.455547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.462784] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.470027] Stack: [ 43.472141] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800b3920000 ffff8800b3616428 [ 43.480089] ffff8800b3616428 ffff8800b3616420 ffff8800b3a47c08 ffffffff82f959ce [ 43.488034] ffffffff82f95910 ffffffff843dd460 ffff8800b3920ab8 dffffc0000000000 [ 43.495991] Call Trace: [ 43.498551] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 43.504849] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 43.511137] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 43.518204] [] nf_unregister_net_hook+0x2ab/0x350 [ 43.524666] [] netfilter_net_exit+0x40/0xb0 [ 43.530621] [] ? nf_unregister_net_hooks+0x60/0x60 [ 43.537192] [] ops_exit_list.isra.4+0xae/0x150 [ 43.543419] [] setup_net+0x221/0x3e0 [ 43.548771] [] ? ops_init+0x3a0/0x3a0 [ 43.554208] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 43.561053] [] copy_net_ns+0xd2/0x190 [ 43.566493] [] create_new_namespaces+0x2f6/0x610 [ 43.572872] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 43.579603] [] SyS_unshare+0x3da/0x700 [ 43.585107] [] ? SyS_clone+0x50/0x50 [ 43.590444] [] ? SyS_read+0x1b0/0x1b0 [ 43.595865] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 43.602329] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 43.608876] 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 [ 43.635174] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 43.641756] RSP [ 43.645546] ---[ end trace 404fe7a4fd3b145f ]--- [ 43.650285] Kernel panic - not syncing: Fatal exception [ 43.656110] Dumping ftrace buffer: [ 43.659619] (ftrace buffer empty) [ 43.663296] Kernel Offset: disabled [ 43.666887] Rebooting in 86400 seconds..