[ 16.838071] random: sshd: uninitialized urandom read (32 bytes read, 32 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.836549] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 22.122058] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.988175] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available) [ 27.962810] random: sshd: uninitialized urandom read (32 bytes read, 107 bits of entropy available) Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. [ 33.358650] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) [ 33.494348] IPVS: Creating netns size=2552 id=1 [ 33.521154] IPVS: Creating netns size=2552 id=2 executing program [ 33.547212] IPVS: Creating netns size=2552 id=3 executing program executing program [ 33.584616] IPVS: Creating netns size=2552 id=4 [ 33.624051] IPVS: Creating netns size=2552 id=5 executing program [ 33.653220] IPVS: Creating netns size=2552 id=6 executing program executing program [ 33.683208] IPVS: Creating netns size=2552 id=7 executing program [ 33.717050] IPVS: Creating netns size=2552 id=8 executing program executing program [ 33.758679] IPVS: Creating netns size=2552 id=9 executing program [ 33.796953] IPVS: Creating netns size=2552 id=10 executing program [ 33.844092] IPVS: Creating netns size=2552 id=11 executing program [ 33.891006] IPVS: Creating netns size=2552 id=12 executing program [ 33.923916] IPVS: Creating netns size=2552 id=13 executing program [ 33.958387] IPVS: Creating netns size=2552 id=14 executing program [ 34.001898] IPVS: Creating netns size=2552 id=15 executing program [ 34.035680] IPVS: Creating netns size=2552 id=16 executing program [ 34.070527] IPVS: Creating netns size=2552 id=17 executing program [ 35.217168] IPVS: Creating netns size=2552 id=18 executing program [ 35.262750] IPVS: Creating netns size=2552 id=19 executing program [ 35.308026] IPVS: Creating netns size=2552 id=20 executing program [ 35.347593] IPVS: Creating netns size=2552 id=21 executing program [ 35.386178] IPVS: Creating netns size=2552 id=22 executing program [ 35.422999] IPVS: Creating netns size=2552 id=23 executing program [ 35.471576] IPVS: Creating netns size=2552 id=24 executing program [ 35.510485] IPVS: Creating netns size=2552 id=25 executing program [ 35.549887] IPVS: Creating netns size=2552 id=26 [ 43.575817] pktgen: kernel_thread() failed for cpu 0 [ 43.581018] pktgen: Cannot create thread for cpu 0 (-4) [ 43.586430] pktgen: kernel_thread() failed for cpu 1 [ 43.591507] pktgen: Cannot create thread for cpu 1 (-4) [ 43.596942] pktgen: Initialization failed for all threads [ 43.663965] kasan: CONFIG_KASAN_INLINE enabled [ 43.668588] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.681411] Dumping ftrace buffer: [ 43.684931] (ftrace buffer empty) [ 43.688613] Modules linked in: [ 43.691892] CPU: 0 PID: 3413 Comm: syzkaller352192 Not tainted 4.4.111-g1849cd3 #26 [ 43.699651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.708973] task: ffff8801cfbb2f80 task.stack: ffff8800b0690000 [ 43.714995] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 43.723924] RSP: 0018:ffff8800b0697998 EFLAGS: 00010202 [ 43.729340] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f389 [ 43.736577] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea080 [ 43.743812] RBP: ffff8800b06979c8 R08: 0000000000000001 R09: 0000000000000000 [ 43.751057] R10: 0000000000000000 R11: 1ffff100160d2efe R12: dffffc0000000000 [ 43.758292] R13: ffff8801cf0f7068 R14: 0000000000000038 R15: 00000000000000b8 [ 43.765528] FS: 000000000220e880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 43.773717] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.779570] CR2: 00007f4deed10000 CR3: 00000000b3cc6000 CR4: 0000000000160670 [ 43.786808] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.794042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.801277] Stack: [ 43.803403] ffffffff82f9f300 ffffffff83cc5820 ffff8800b0511e00 ffff8801cf0f7068 [ 43.811363] ffff8801cf0f7068 ffff8801cf0f7060 ffff8800b06979f8 ffffffff82f9724e [ 43.819314] ffffffff82f97190 ffffffff843e2760 ffff8800b05128b8 dffffc0000000000 [ 43.827256] Call Trace: [ 43.829812] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 43.836106] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 43.842390] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 43.849461] [] nf_unregister_net_hook+0x2ab/0x350 [ 43.855915] [] netfilter_net_exit+0x40/0xb0 [ 43.861856] [] ? nf_unregister_net_hooks+0x60/0x60 [ 43.868409] [] ops_exit_list.isra.4+0xae/0x150 [ 43.874702] [] setup_net+0x221/0x3e0 [ 43.880034] [] ? ops_init+0x3a0/0x3a0 [ 43.885455] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 43.892432] [] copy_net_ns+0xd2/0x190 [ 43.897852] [] create_new_namespaces+0x2f6/0x610 [ 43.904742] [] copy_namespaces+0x291/0x320 [ 43.910592] [] ? copy_namespaces+0x3e/0x320 [ 43.916534] [] copy_process+0x1d98/0x6120 [ 43.922299] [] ? __cleanup_sighand+0x50/0x50 [ 43.928324] [] ? __fsnotify_parent+0xbc/0x340 [ 43.934430] [] ? fsnotify+0x5ad/0xee0 [ 43.939939] [] ? fsnotify+0xee0/0xee0 [ 43.945365] [] _do_fork+0x151/0xe00 [ 43.950612] [] ? fork_idle+0x270/0x270 [ 43.956120] [] ? SyS_write+0x13d/0x1b0 [ 43.961629] [] ? SyS_read+0x1b0/0x1b0 [ 43.967048] [] SyS_clone+0x37/0x50 [ 43.972206] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 43.978747] Code: a8 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 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 ed 5a 2e fe 48 85 [ 44.005061] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 44.011636] RSP [ 44.015527] ---[ end trace 4c0bc77bbc59bb8e ]--- [ 44.020279] Kernel panic - not syncing: Fatal exception [ 44.026079] Dumping ftrace buffer: [ 44.029585] (ftrace buffer empty) [ 44.033261] Kernel Offset: disabled [ 44.036852] Rebooting in 86400 seconds..