[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.197879] 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: [ 20.254496] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 20.539185] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.350341] random: sshd: uninitialized urandom read (32 bytes read, 96 bits of entropy available) [ 21.528607] random: sshd: uninitialized urandom read (32 bytes read, 101 bits of entropy available) Warning: Permanently added '10.128.15.211' (ECDSA) to the list of known hosts. [ 26.916767] random: sshd: uninitialized urandom read (32 bytes read, 107 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.041906] IPVS: Creating netns size=2552 id=1 executing program [ 27.069932] IPVS: Creating netns size=2552 id=2 executing program [ 27.100066] IPVS: Creating netns size=2552 id=3 executing program [ 27.140144] IPVS: Creating netns size=2552 id=4 executing program [ 27.170469] IPVS: Creating netns size=2552 id=5 executing program [ 27.200682] IPVS: Creating netns size=2552 id=6 executing program [ 27.231159] IPVS: Creating netns size=2552 id=7 executing program [ 27.272027] IPVS: Creating netns size=2552 id=8 executing program [ 28.520992] IPVS: Creating netns size=2552 id=9 executing program [ 28.561998] IPVS: Creating netns size=2552 id=10 executing program [ 28.594146] IPVS: Creating netns size=2552 id=11 executing program [ 28.626589] IPVS: Creating netns size=2552 id=12 executing program [ 28.660539] IPVS: Creating netns size=2552 id=13 executing program [ 28.694209] IPVS: Creating netns size=2552 id=14 executing program [ 28.728760] IPVS: Creating netns size=2552 id=15 executing program [ 28.763052] IPVS: Creating netns size=2552 id=16 [ 36.140668] pktgen: kernel_thread() failed for cpu 0 [ 36.145833] pktgen: Cannot create thread for cpu 0 (-4) [ 36.151203] pktgen: kernel_thread() failed for cpu 1 [ 36.156411] pktgen: Cannot create thread for cpu 1 (-4) [ 36.161749] pktgen: Initialization failed for all threads [ 36.221693] kasan: CONFIG_KASAN_INLINE enabled [ 36.226135] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.238927] Dumping ftrace buffer: [ 36.242436] (ftrace buffer empty) [ 36.246117] Modules linked in: [ 36.249385] CPU: 1 PID: 3369 Comm: syzkaller657897 Not tainted 4.4.110-geb4909b #21 [ 36.257144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.266465] task: ffff8801d08697c0 task.stack: ffff8801d0200000 [ 36.272482] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.281429] RSP: 0018:ffff8801d0207ba8 EFLAGS: 00010202 [ 36.286850] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f129 [ 36.294109] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea048 [ 36.301342] RBP: ffff8801d0207bd8 R08: 0000000000000001 R09: 0000000000000000 [ 36.308579] R10: 0000000000000000 R11: 1ffff1003a040f40 R12: dffffc0000000000 [ 36.315815] R13: ffff8801d0e25ae8 R14: 0000000000000038 R15: 00000000000000b8 [ 36.323050] FS: 000000000211d880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 36.331241] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.337087] CR2: 00007f7617b14000 CR3: 00000001d0836000 CR4: 0000000000160670 [ 36.344345] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.351585] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.358819] Stack: [ 36.360931] ffffffff82f9f0a0 ffffffff83cc5820 ffff8801d0198000 ffff8801d0e25ae8 [ 36.368883] ffff8801d0e25ae8 ffff8801d0e25ae0 ffff8801d0207c08 ffffffff82f96fee [ 36.376827] ffffffff82f96f30 ffffffff843e2720 ffff8801d0198ab8 dffffc0000000000 [ 36.384779] Call Trace: [ 36.387342] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 36.393631] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 36.399916] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 36.406989] [] nf_unregister_net_hook+0x2ab/0x350 [ 36.413456] [] netfilter_net_exit+0x40/0xb0 [ 36.419393] [] ? nf_unregister_net_hooks+0x60/0x60 [ 36.425939] [] ops_exit_list.isra.4+0xae/0x150 [ 36.432140] [] setup_net+0x221/0x3e0 [ 36.437475] [] ? ops_init+0x3a0/0x3a0 [ 36.442895] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 36.449700] [] copy_net_ns+0xd2/0x190 [ 36.455123] [] create_new_namespaces+0x2f6/0x610 [ 36.461496] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 36.468213] [] SyS_unshare+0x3da/0x700 [ 36.473712] [] ? SyS_clone+0x50/0x50 [ 36.479046] [] ? SyS_read+0x1b0/0x1b0 [ 36.484462] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 36.490921] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 36.497460] 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 [ 36.523768] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 36.530343] RSP [ 36.534296] ---[ end trace 65b8ae5571fabd99 ]--- [ 36.539036] Kernel panic - not syncing: Fatal exception [ 36.544762] Dumping ftrace buffer: [ 36.548269] (ftrace buffer empty) [ 36.551945] Kernel Offset: disabled [ 36.555545] Rebooting in 86400 seconds..