[ 17.057953] 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: [ 20.648239] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.032593] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.814781] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available) [ 24.481716] random: sshd: uninitialized urandom read (32 bytes read, 94 bits of entropy available) Warning: Permanently added '10.128.15.196' (ECDSA) to the list of known hosts. [ 29.867406] random: sshd: uninitialized urandom read (32 bytes read, 101 bits of entropy available) executing program executing program [ 29.974044] IPVS: Creating netns size=2552 id=1 [ 31.148242] pktgen: kernel_thread() failed for cpu 0 [ 31.153413] pktgen: Cannot create thread for cpu 0 (-4) [ 31.158798] pktgen: kernel_thread() failed for cpu 1 [ 31.164331] pktgen: Cannot create thread for cpu 1 (-4) [ 31.169689] pktgen: Initialization failed for all threads [ 31.229591] kasan: CONFIG_KASAN_INLINE enabled [ 31.234041] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 31.246890] Dumping ftrace buffer: [ 31.250403] (ftrace buffer empty) [ 31.254087] Modules linked in: [ 31.257372] CPU: 1 PID: 3337 Comm: syzkaller208854 Not tainted 4.4.111-g1849cd3 #19 [ 31.265137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.274473] task: ffff8800b4ccaf80 task.stack: ffff8801ccfc0000 [ 31.280503] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 31.289448] RSP: 0018:ffff8801ccfc7920 EFLAGS: 00010202 [ 31.294874] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9f389 [ 31.302120] RDX: 0000000000000000 RSI: ffffffff839fd820 RDI: ffffffff847ea088 [ 31.309389] RBP: ffff8801ccfc7950 R08: 0000000000000001 R09: 0000000000000000 [ 31.316636] R10: 0000000000000000 R11: 1ffff100399f8ef0 R12: dffffc0000000000 [ 31.323880] R13: ffff8801d113f0c8 R14: 0000000000000038 R15: 00000000000000b8 [ 31.331126] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f778cb40 [ 31.339324] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.345182] CR2: 00007fe1d87ac000 CR3: 00000001d089c000 CR4: 0000000000160670 [ 31.352432] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.359678] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.366921] Stack: [ 31.369042] ffffffff82f9f300 ffffffff83cc5820 ffff8801d0561e00 ffff8801d113f0c8 [ 31.377023] ffff8801d113f0c8 ffff8801d113f0c0 ffff8801ccfc7980 ffffffff82f9724e [ 31.384999] ffffffff82f97190 ffffffff843e2760 ffff8801d05628b8 dffffc0000000000 [ 31.392975] Call Trace: [ 31.395541] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 31.401835] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 31.408128] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 31.415208] [] nf_unregister_net_hook+0x2ab/0x350 [ 31.421674] [] netfilter_net_exit+0x40/0xb0 [ 31.427631] [] ? nf_unregister_net_hooks+0x60/0x60 [ 31.434188] [] ops_exit_list.isra.4+0xae/0x150 [ 31.440394] [] setup_net+0x221/0x3e0 [ 31.445731] [] ? ops_init+0x3a0/0x3a0 [ 31.451161] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 31.457986] [] ? kmem_cache_alloc+0x219/0x290 [ 31.464111] [] copy_net_ns+0xd2/0x190 [ 31.469537] [] create_new_namespaces+0x2f6/0x610 [ 31.475918] [] copy_namespaces+0x291/0x320 [ 31.481780] [] ? copy_namespaces+0x3e/0x320 [ 31.487729] [] copy_process+0x1d98/0x6120 [ 31.493503] [] ? __cleanup_sighand+0x50/0x50 [ 31.499548] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 31.506539] [] _do_fork+0x151/0xe00 [ 31.511790] [] ? fork_idle+0x270/0x270 [ 31.517299] [] SyS_clone+0x37/0x50 [ 31.522465] [] ? entry_INT80_compat+0x90/0x90 [ 31.528587] [] do_fast_syscall_32+0x314/0x890 [ 31.534704] [] sysenter_flags_fixed+0xd/0x17 [ 31.540730] 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 [ 31.567412] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 31.574008] RSP [ 31.577698] ---[ end trace 03540c4ae4c75385 ]--- [ 31.582490] Kernel panic - not syncing: Fatal exception [ 31.588299] Dumping ftrace buffer: [ 31.591815] (ftrace buffer empty) [ 31.595496] Kernel Offset: disabled [ 31.599094] Rebooting in 86400 seconds..