[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.017766] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.287163] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.474073] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 22.389795] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available) [ 39.397233] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) Warning: Permanently added '10.128.15.231' (ECDSA) to the list of known hosts. [ 44.825480] random: nonblocking pool is initialized executing program [ 44.962607] IPVS: Creating netns size=2552 id=1 executing program [ 46.153144] pktgen: kernel_thread() failed for cpu 0 [ 46.161646] pktgen: Cannot create thread for cpu 0 (-4) [ 46.170044] pktgen: kernel_thread() failed for cpu 1 [ 46.178210] pktgen: Cannot create thread for cpu 1 (-4) [ 46.186845] pktgen: Initialization failed for all threads [ 46.308320] kasan: CONFIG_KASAN_INLINE enabled [ 46.315219] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.336137] Dumping ftrace buffer: [ 46.341841] (ftrace buffer empty) [ 46.348008] Modules linked in: [ 46.352852] CPU: 1 PID: 3332 Comm: syzkaller603004 Not tainted 4.4.111-gc2f631b #27 [ 46.365063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.380312] task: ffff8801d158df00 task.stack: ffff8800b7da0000 [ 46.390223] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 46.404182] RSP: 0018:ffff8800b7da7ba8 EFLAGS: 00010202 [ 46.412876] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f429 [ 46.424005] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea088 [ 46.435317] RBP: ffff8800b7da7bd8 R08: 0000000000000001 R09: 0000000000000000 [ 46.447162] R10: 0000000000000000 R11: 1ffff10016fb4f40 R12: dffffc0000000000 [ 46.458722] R13: ffff8801d082ad88 R14: 0000000000000038 R15: 00000000000000b8 [ 46.469679] FS: 00007fecc2457700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 46.481617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.490253] CR2: 00007f601d0ae000 CR3: 00000000b3ed4000 CR4: 0000000000160670 [ 46.501892] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.512327] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.523210] Stack: [ 46.526780] ffffffff82f9f3a0 ffffffff83cc5820 ffff8800b7cf0000 ffff8801d082ad88 [ 46.538696] ffff8801d082ad88 ffff8801d082ad80 ffff8800b7da7c08 ffffffff82f972ee [ 46.550239] ffffffff82f97230 ffffffff843e2760 ffff8800b7cf0ab8 dffffc0000000000 [ 46.561906] Call Trace: [ 46.565802] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 46.574924] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 46.584147] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 46.592791] [] nf_unregister_net_hook+0x2ab/0x350 [ 46.600819] [] netfilter_net_exit+0x40/0xb0 [ 46.608681] [] ? nf_unregister_net_hooks+0x60/0x60 [ 46.616537] [] ops_exit_list.isra.4+0xae/0x150 [ 46.624049] [] setup_net+0x221/0x3e0 [ 46.629404] [] ? ops_init+0x3a0/0x3a0 [ 46.635350] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 46.642770] [] copy_net_ns+0xd2/0x190 [ 46.648898] [] create_new_namespaces+0x2f6/0x610 [ 46.655275] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 46.663825] [] SyS_unshare+0x3da/0x700 [ 46.670373] [] ? SyS_clone+0x50/0x50 [ 46.675887] [] ? __do_page_fault+0x380/0xa00 [ 46.684094] [] ? retint_user+0x18/0x3c [ 46.690672] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 46.697220] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 46.704554] Code: a7 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 57 0a 3c fe 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 f4 01 00 00 49 8b 1e e8 4d 5a 2e fe 48 85 [ 46.732411] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 46.739265] RSP [ 46.743308] ---[ end trace 73cd027e45bdc6ce ]--- [ 46.749205] Kernel panic - not syncing: Fatal exception [ 46.755020] Dumping ftrace buffer: [ 46.758528] (ftrace buffer empty) [ 46.762906] Kernel Offset: disabled [ 46.768955] Rebooting in 86400 seconds..