[ 13.856136] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.310699] random: sshd: uninitialized urandom read (32 bytes read, 45 bits of entropy available) [ 37.658376] random: sshd: uninitialized urandom read (32 bytes read, 45 bits of entropy available) [ 38.139804] random: sshd: uninitialized urandom read (32 bytes read, 95 bits of entropy available) [ 38.277767] random: sshd: uninitialized urandom read (32 bytes read, 97 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-3,10.128.0.58' (ECDSA) to the list of known hosts. [ 43.695185] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.806459] IPVS: Creating netns size=2552 id=1 [ 43.826404] IPVS: Creating netns size=2552 id=2 executing program executing program executing program [ 43.846653] IPVS: Creating netns size=2552 id=3 [ 43.866359] IPVS: Creating netns size=2552 id=4 [ 43.886627] IPVS: Creating netns size=2552 id=5 executing program [ 43.906462] IPVS: Creating netns size=2552 id=6 executing program [ 43.937211] IPVS: Creating netns size=2552 id=7 executing program [ 43.958722] IPVS: Creating netns size=2552 id=8 executing program [ 44.981433] IPVS: Creating netns size=2552 id=9 executing program [ 45.004924] IPVS: Creating netns size=2552 id=10 executing program [ 45.037253] IPVS: Creating netns size=2552 id=11 executing program [ 45.059451] IPVS: Creating netns size=2552 id=12 executing program [ 45.092092] IPVS: Creating netns size=2552 id=13 executing program [ 45.115426] IPVS: Creating netns size=2552 id=14 executing program [ 45.137929] IPVS: Creating netns size=2552 id=15 executing program [ 45.171103] IPVS: Creating netns size=2552 id=16 executing program [ 45.205274] IPVS: Creating netns size=2552 id=17 [ 51.916825] pktgen: kernel_thread() failed for cpu 0 [ 51.921954] pktgen: Cannot create thread for cpu 0 (-4) [ 51.927365] pktgen: kernel_thread() failed for cpu 1 [ 51.932447] pktgen: Cannot create thread for cpu 1 (-4) [ 51.937796] pktgen: Initialization failed for all threads [ 52.011000] kasan: CONFIG_KASAN_INLINE enabled [ 52.015410] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.028234] Dumping ftrace buffer: [ 52.031738] (ftrace buffer empty) [ 52.035413] Modules linked in: [ 52.038682] CPU: 1 PID: 3371 Comm: syzkaller057992 Not tainted 4.4.104-ged884eb #2 [ 52.046360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.055677] task: ffff8800b752af80 task.stack: ffff8801d3380000 [ 52.061697] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x154/0x310 [ 52.070612] RSP: 0018:ffff8801d3387ba0 EFLAGS: 00010202 [ 52.076022] RAX: 0000000000000007 RBX: 0000000000000003 RCX: 1ffffffff08fc631 [ 52.083255] RDX: 0000000000000000 RSI: ffffffff839fd420 RDI: ffffffff847e3188 [ 52.090489] RBP: ffff8801d3387bd0 R08: 0000000000000001 R09: 0000000000000000 [ 52.097724] R10: 0000000000000000 R11: 1ffff1003a670f40 R12: dffffc0000000000 [ 52.104958] R13: ffff8800b5eaacf8 R14: 0000000000000038 R15: 00000000000000b8 [ 52.112191] FS: 0000000000d57880(0063) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 52.120380] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.126224] CR2: 00007fef96998000 CR3: 00000001d56a3000 CR4: 00000000001406e0 [ 52.133469] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.140702] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.147941] Stack: [ 52.150053] ffffffff82f4568d ffffffff83cc3e60 ffff8801d71a5ac0 ffff8800b5eaacf8 [ 52.157993] ffff8801d71a6578 ffffffff843dd188 ffff8801d3387c00 ffffffff82f3da2b [ 52.165940] ffffffff82f3d990 ffff8800b5eaacf8 ffffffff843dd160 ffff8800b5eaacf0 [ 52.173883] Call Trace: [ 52.176446] [] ? nfqnl_nf_hook_drop+0xdd/0x310 [ 52.182642] [] nf_queue_nf_hook_drop+0x9b/0x180 [ 52.188921] [] ? nf_queue_entry_release_refs+0x120/0x120 [ 52.195983] [] nf_unregister_net_hook+0x1f4/0x310 [ 52.202437] [] netfilter_net_exit+0x36/0xa0 [ 52.208371] [] ops_exit_list.isra.4+0x8b/0x120 [ 52.214563] [] setup_net+0x20e/0x3d0 [ 52.219889] [] ? ops_init+0x360/0x360 [ 52.225311] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 52.232123] [] copy_net_ns+0xa6/0x140 [ 52.237537] [] create_new_namespaces+0x2d3/0x580 [ 52.243904] [] unshare_nsproxy_namespaces+0x8b/0x1a0 [ 52.250625] [] SyS_unshare+0x357/0x6b0 [ 52.256123] [] ? SyS_clone+0x20/0x20 [ 52.261452] [] ? vfs_write+0x33f/0x520 [ 52.266958] [] ? SyS_read+0x1c0/0x1c0 [ 52.272378] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 52.278839] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 52.285377] Code: 74 0d 80 3d a6 d5 88 01 00 0f 84 b0 00 00 00 4d 8d 77 38 49 bc 00 00 00 00 00 fc ff df 49 81 c7 b8 00 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 9f 01 00 00 49 8b 1e e8 59 fb 32 fe 48 85 [ 52.311682] RIP [] nfqnl_nf_hook_drop+0x154/0x310 [ 52.318247] RSP [ 52.322157] ---[ end trace daade15c82ebaa31 ]--- [ 52.326903] Kernel panic - not syncing: Fatal exception [ 52.332684] Dumping ftrace buffer: [ 52.336190] (ftrace buffer empty) [ 52.339864] Kernel Offset: disabled [ 52.343453] Rebooting in 86400 seconds..