[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.056093] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.311647] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 22.658512] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 23.484760] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) [ 23.650003] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available) Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. [ 29.033151] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program [ 29.152084] IPVS: Creating netns size=2552 id=1 executing program [ 29.190399] IPVS: Creating netns size=2552 id=2 executing program [ 29.229104] IPVS: Creating netns size=2552 id=3 executing program [ 29.267328] IPVS: Creating netns size=2552 id=4 executing program [ 29.297498] IPVS: Creating netns size=2552 id=5 executing program [ 29.337302] IPVS: Creating netns size=2552 id=6 executing program [ 29.387742] IPVS: Creating netns size=2552 id=7 executing program [ 29.418340] IPVS: Creating netns size=2552 id=8 executing program [ 30.550467] IPVS: Creating netns size=2552 id=9 executing program [ 30.591653] IPVS: Creating netns size=2552 id=10 executing program [ 30.623813] IPVS: Creating netns size=2552 id=11 executing program [ 30.666261] IPVS: Creating netns size=2552 id=12 executing program [ 30.700713] IPVS: Creating netns size=2552 id=13 executing program [ 30.743378] IPVS: Creating netns size=2552 id=14 executing program [ 30.778018] IPVS: Creating netns size=2552 id=15 executing program [ 30.813130] IPVS: Creating netns size=2552 id=16 executing program [ 34.250735] random: nonblocking pool is initialized [ 37.304110] pktgen: kernel_thread() failed for cpu 0 [ 37.309294] pktgen: Cannot create thread for cpu 0 (-4) [ 37.314659] pktgen: kernel_thread() failed for cpu 1 [ 37.319764] pktgen: Cannot create thread for cpu 1 (-4) [ 37.325102] pktgen: Initialization failed for all threads [ 37.394136] kasan: CONFIG_KASAN_INLINE enabled [ 37.398565] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.411344] Dumping ftrace buffer: [ 37.414845] (ftrace buffer empty) [ 37.418519] Modules linked in: [ 37.421789] CPU: 1 PID: 3361 Comm: syzkaller735396 Not tainted 4.4.107-g610c835 #4 [ 37.429456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.438774] task: ffff8801ccd297c0 task.stack: ffff8800b4118000 [ 37.444963] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.455884] RSP: 0018:ffff8800b411fb30 EFLAGS: 00010202 [ 37.461301] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 37.468534] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4488 [ 37.475772] RBP: ffff8800b411fb60 R08: 0000000000000001 R09: 0000000000000000 [ 37.483005] R10: 0000000000000000 R11: 1ffff10016823f32 R12: dffffc0000000000 [ 37.490239] R13: ffff8801d0fc3608 R14: 0000000000000038 R15: 00000000000000b8 [ 37.497473] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008496840 [ 37.505660] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 37.511505] CR2: 00007ff51ff52000 CR3: 00000000b5ebc000 CR4: 00000000001406e0 [ 37.518740] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.525972] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.533204] Stack: [ 37.535317] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d010bc00 ffff8801d0fc3608 [ 37.543257] ffff8801d0fc3608 ffff8801d0fc3600 ffff8800b411fb90 ffffffff82f959ce [ 37.551193] ffffffff82f95910 ffffffff843dd460 ffff8801d010c6b8 dffffc0000000000 [ 37.559125] Call Trace: [ 37.561677] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 37.567961] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 37.574243] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 37.581304] [] nf_unregister_net_hook+0x2ab/0x350 [ 37.587761] [] netfilter_net_exit+0x40/0xb0 [ 37.593695] [] ? nf_unregister_net_hooks+0x60/0x60 [ 37.600252] [] ops_exit_list.isra.4+0xae/0x150 [ 37.606446] [] setup_net+0x221/0x3e0 [ 37.611779] [] ? ops_init+0x3a0/0x3a0 [ 37.617715] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 37.624520] [] ? kmem_cache_alloc+0x219/0x290 [ 37.630630] [] copy_net_ns+0xd2/0x190 [ 37.636042] [] create_new_namespaces+0x2f6/0x610 [ 37.642409] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 37.649124] [] SyS_unshare+0x3da/0x700 [ 37.654622] [] ? SyS_clone+0x50/0x50 [ 37.659953] [] ? SyS_read+0x1b0/0x1b0 [ 37.666841] [] ? do_fast_syscall_32+0xd7/0x890 [ 37.674076] [] ? SyS_clone+0x50/0x50 [ 37.679402] [] do_fast_syscall_32+0x314/0x890 [ 37.685516] [] sysenter_flags_fixed+0xd/0x17 [ 37.691548] 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 [ 37.717825] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.724404] RSP [ 37.728381] ---[ end trace 4958a7f1a649e309 ]--- [ 37.733117] Kernel panic - not syncing: Fatal exception [ 37.739362] Dumping ftrace buffer: [ 37.742866] (ftrace buffer empty) [ 37.746541] Kernel Offset: disabled [ 37.750362] Rebooting in 86400 seconds..