[ 15.410792] 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: [ 19.202768] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 19.385444] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 20.093092] random: sshd: uninitialized urandom read (32 bytes read, 76 bits of entropy available) [ 40.505348] random: sshd: uninitialized urandom read (32 bytes read, 89 bits of entropy available) Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. [ 45.886328] random: sshd: uninitialized urandom read (32 bytes read, 93 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program [ 46.024279] IPVS: Creating netns size=2552 id=1 executing program [ 46.050548] IPVS: Creating netns size=2552 id=2 executing program [ 46.077617] IPVS: Creating netns size=2552 id=3 executing program [ 46.124409] IPVS: Creating netns size=2552 id=4 executing program [ 46.152364] IPVS: Creating netns size=2552 id=5 executing program [ 46.190866] IPVS: Creating netns size=2552 id=6 executing program [ 46.219392] IPVS: Creating netns size=2552 id=7 executing program executing program [ 46.258143] IPVS: Creating netns size=2552 id=8 [ 47.298089] IPVS: Creating netns size=2552 id=9 executing program [ 47.327104] IPVS: Creating netns size=2552 id=10 [ 47.357212] IPVS: Creating netns size=2552 id=11 executing program [ 47.386837] IPVS: Creating netns size=2552 id=12 executing program [ 47.418357] IPVS: Creating netns size=2552 id=13 executing program executing program [ 47.459582] IPVS: Creating netns size=2552 id=14 executing program [ 47.510690] IPVS: Creating netns size=2552 id=15 executing program [ 47.543436] IPVS: Creating netns size=2552 id=16 executing program [ 53.775713] pktgen: kernel_thread() failed for cpu 0 [ 53.780932] pktgen: Cannot create thread for cpu 0 (-4) [ 53.786342] pktgen: kernel_thread() failed for cpu 1 [ 53.791423] pktgen: Cannot create thread for cpu 1 (-4) [ 53.796802] pktgen: Initialization failed for all threads [ 53.873872] kasan: CONFIG_KASAN_INLINE enabled [ 53.878386] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 53.891172] Dumping ftrace buffer: [ 53.894677] (ftrace buffer empty) [ 53.898353] Modules linked in: [ 53.901621] CPU: 0 PID: 3378 Comm: syzkaller376907 Not tainted 4.4.107-g610c835 #4 [ 53.909291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.918608] task: ffff8801d08eaf80 task.stack: ffff8801cec78000 [ 53.924625] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 53.933546] RSP: 0018:ffff8801cec7fb30 EFLAGS: 00010202 [ 53.938959] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 53.946194] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 53.953440] RBP: ffff8801cec7fb60 R08: 0000000000000001 R09: 0000000000000000 [ 53.960680] R10: 0000000000000000 R11: 1ffff10039d8ff32 R12: dffffc0000000000 [ 53.967913] R13: ffff8801d094aa88 R14: 0000000000000038 R15: 00000000000000b8 [ 53.975148] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009d2b840 [ 53.983336] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 53.989181] CR2: 00007fdf28302000 CR3: 00000001d01a8000 CR4: 00000000001406f0 [ 53.996423] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.003685] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.010918] Stack: [ 54.013132] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800baac1e00 ffff8801d094aa88 [ 54.021088] ffff8801d094aa88 ffff8801d094aa80 ffff8801cec7fb90 ffffffff82f959ce [ 54.029029] ffffffff82f95910 ffffffff843dd460 ffff8800baac28b8 dffffc0000000000 [ 54.036984] Call Trace: [ 54.039539] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 54.045823] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 54.052117] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 54.059181] [] nf_unregister_net_hook+0x2ab/0x350 [ 54.065639] [] netfilter_net_exit+0x40/0xb0 [ 54.071572] [] ? nf_unregister_net_hooks+0x60/0x60 [ 54.078118] [] ops_exit_list.isra.4+0xae/0x150 [ 54.084313] [] setup_net+0x221/0x3e0 [ 54.089639] [] ? ops_init+0x3a0/0x3a0 [ 54.095058] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 54.101868] [] ? kmem_cache_alloc+0x219/0x290 [ 54.107983] [] copy_net_ns+0xd2/0x190 [ 54.113409] [] create_new_namespaces+0x2f6/0x610 [ 54.119784] [] unshare_nsproxy_namespaces+0xae/0x1e0 [ 54.126508] [] SyS_unshare+0x3da/0x700 [ 54.132005] [] ? SyS_clone+0x50/0x50 [ 54.137334] [] ? SyS_read+0x1b0/0x1b0 [ 54.142748] [] ? do_fast_syscall_32+0xd7/0x890 [ 54.148948] [] ? SyS_clone+0x50/0x50 [ 54.154272] [] do_fast_syscall_32+0x314/0x890 [ 54.160380] [] sysenter_flags_fixed+0xd/0x17 [ 54.166401] 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 [ 54.192707] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 54.199285] RSP [ 54.203223] ---[ end trace 1ed9f31e0a33d98f ]--- [ 54.207980] Kernel panic - not syncing: Fatal exception [ 54.213936] Dumping ftrace buffer: [ 54.217441] (ftrace buffer empty) [ 54.221117] Kernel Offset: disabled [ 54.224706] Rebooting in 86400 seconds..