[....] Starting file context mai[ 16.111423] 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: [ 21.557955] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.839532] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.634067] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) [ 22.799326] random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. [ 28.200581] 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 executing program [ 28.317063] IPVS: Creating netns size=2552 id=1 executing program [ 28.355953] IPVS: Creating netns size=2552 id=2 executing program [ 28.384746] IPVS: Creating netns size=2552 id=3 executing program [ 28.414312] IPVS: Creating netns size=2552 id=4 executing program [ 28.443321] IPVS: Creating netns size=2552 id=5 executing program [ 28.482772] IPVS: Creating netns size=2552 id=6 executing program [ 28.513586] IPVS: Creating netns size=2552 id=7 executing program [ 28.554455] IPVS: Creating netns size=2552 id=8 executing program [ 29.690369] IPVS: Creating netns size=2552 id=9 executing program [ 29.723215] IPVS: Creating netns size=2552 id=10 executing program [ 29.765116] IPVS: Creating netns size=2552 id=11 executing program [ 29.798202] IPVS: Creating netns size=2552 id=12 executing program [ 29.831013] IPVS: Creating netns size=2552 id=13 executing program [ 29.875474] IPVS: Creating netns size=2552 id=14 executing program [ 29.909645] IPVS: Creating netns size=2552 id=15 executing program [ 29.944538] IPVS: Creating netns size=2552 id=16 executing program [ 29.979970] IPVS: Creating netns size=2552 id=17 [ 37.342272] pktgen: kernel_thread() failed for cpu 0 [ 37.347468] pktgen: Cannot create thread for cpu 0 (-4) [ 37.352838] pktgen: kernel_thread() failed for cpu 1 [ 37.357945] pktgen: Cannot create thread for cpu 1 (-4) [ 37.363278] pktgen: Initialization failed for all threads [ 37.443781] kasan: CONFIG_KASAN_INLINE enabled [ 37.448242] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.461022] Dumping ftrace buffer: [ 37.464529] (ftrace buffer empty) [ 37.468203] Modules linked in: [ 37.471471] CPU: 0 PID: 3359 Comm: syzkaller233623 Not tainted 4.4.107-g610c835 #4 [ 37.479140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.488459] task: ffff8801d0a897c0 task.stack: ffff8801cfd48000 [ 37.494476] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.503425] RSP: 0018:ffff8801cfd4fb30 EFLAGS: 00010202 [ 37.508844] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 37.516082] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 37.523319] RBP: ffff8801cfd4fb60 R08: 0000000000000001 R09: 0000000000000000 [ 37.530573] R10: 0000000000000000 R11: 1ffff10039fa9f32 R12: dffffc0000000000 [ 37.537823] R13: ffff8800b3830908 R14: 0000000000000038 R15: 00000000000000b8 [ 37.545059] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000084f5840 [ 37.553249] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 37.559095] CR2: 00007f6633c50000 CR3: 00000001d0b89000 CR4: 00000000001406f0 [ 37.566330] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.573564] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.580798] Stack: [ 37.582910] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d0b68000 ffff8800b3830908 [ 37.590857] ffff8800b3830908 ffff8800b3830900 ffff8801cfd4fb90 ffffffff82f959ce [ 37.598802] ffffffff82f95910 ffffffff843dd460 ffff8801d0b68ab8 dffffc0000000000 [ 37.606746] Call Trace: [ 37.609301] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 37.615586] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 37.621867] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 37.628936] [] nf_unregister_net_hook+0x2ab/0x350 [ 37.635399] [] netfilter_net_exit+0x40/0xb0 [ 37.641334] [] ? nf_unregister_net_hooks+0x60/0x60 [ 37.647879] [] ops_exit_list.isra.4+0xae/0x150 [ 37.654074] [] setup_net+0x221/0x3e0 [ 37.659401] [] ? ops_init+0x3a0/0x3a0 [ 37.664819] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 37.671623] [] ? kmem_cache_alloc+0x219/0x290 [ 37.677740] [] copy_net_ns+0xd2/0x190 [ 37.683154] [] create_new_namespaces+0x2f6/0x610 [ 37.689530] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 37.696248] [] SyS_unshare+0x3da/0x700 [ 37.702193] [] ? SyS_clone+0x50/0x50 [ 37.707525] [] ? SyS_read+0x1b0/0x1b0 [ 37.712940] [] ? do_fast_syscall_32+0xd7/0x890 [ 37.719134] [] ? SyS_clone+0x50/0x50 [ 37.724462] [] do_fast_syscall_32+0x314/0x890 [ 37.730571] [] sysenter_flags_fixed+0xd/0x17 [ 37.736596] 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 [ 37.762923] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 37.769491] RSP [ 37.773299] ---[ end trace 5a8297eb41b9b0e9 ]--- [ 37.778053] Kernel panic - not syncing: Fatal exception [ 37.783817] Dumping ftrace buffer: [ 37.787323] (ftrace buffer empty) [ 37.790999] Kernel Offset: disabled [ 37.794605] Rebooting in 86400 seconds..