[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[[[ 16.309475] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) 32m ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.996119] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.251963] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.041118] random: sshd: uninitialized urandom read (32 bytes read, 95 bits of entropy available) [ 24.681295] random: sshd: uninitialized urandom read (32 bytes read, 101 bits of entropy available) Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts. [ 30.113555] random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.242751] IPVS: Creating netns size=2552 id=1 executing program [ 30.273303] IPVS: Creating netns size=2552 id=2 executing program [ 30.305860] IPVS: Creating netns size=2552 id=3 executing program [ 30.338364] IPVS: Creating netns size=2552 id=4 executing program [ 30.381641] IPVS: Creating netns size=2552 id=5 executing program [ 30.426097] IPVS: Creating netns size=2552 id=6 executing program [ 30.461174] IPVS: Creating netns size=2552 id=7 executing program [ 30.496725] IPVS: Creating netns size=2552 id=8 executing program [ 30.533540] IPVS: Creating netns size=2552 id=9 executing program [ 31.712242] IPVS: Creating netns size=2552 id=10 executing program [ 31.749495] IPVS: Creating netns size=2552 id=11 executing program [ 31.787620] IPVS: Creating netns size=2552 id=12 executing program [ 31.836366] IPVS: Creating netns size=2552 id=13 executing program [ 31.875054] IPVS: Creating netns size=2552 id=14 executing program [ 31.924824] IPVS: Creating netns size=2552 id=15 executing program [ 31.963470] IPVS: Creating netns size=2552 id=16 executing program [ 32.014887] IPVS: Creating netns size=2552 id=17 executing program [ 32.055073] IPVS: Creating netns size=2552 id=18 [ 40.101973] pktgen: kernel_thread() failed for cpu 0 [ 40.107148] pktgen: Cannot create thread for cpu 0 (-4) [ 40.112521] pktgen: kernel_thread() failed for cpu 1 [ 40.117797] pktgen: Cannot create thread for cpu 1 (-4) [ 40.123134] pktgen: Initialization failed for all threads [ 40.203205] kasan: CONFIG_KASAN_INLINE enabled [ 40.207663] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.220450] Dumping ftrace buffer: [ 40.223951] (ftrace buffer empty) [ 40.227626] Modules linked in: [ 40.230892] CPU: 0 PID: 3381 Comm: syzkaller413080 Not tainted 4.4.107-g610c835 #4 [ 40.238558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.247880] task: ffff8801d0cc97c0 task.stack: ffff8800b0af8000 [ 40.253896] RIP: 0010:[] [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 40.262810] RSP: 0018:ffff8800b0aff920 EFLAGS: 00010202 [ 40.268225] RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39 [ 40.275465] RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480 [ 40.282697] RBP: ffff8800b0aff950 R08: 0000000000000001 R09: 0000000000000000 [ 40.289930] R10: 0000000000000000 R11: 1ffff1001615fef0 R12: dffffc0000000000 [ 40.297164] R13: ffff8801d0a6f308 R14: 0000000000000038 R15: 00000000000000b8 [ 40.304400] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000934d840 [ 40.312586] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 40.318431] CR2: 00007f1843bba000 CR3: 00000000b0aef000 CR4: 00000000001406f0 [ 40.325667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.332901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.340132] Stack: [ 40.342248] ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801d0be1e00 ffff8801d0a6f308 [ 40.350188] ffff8801d0a6f308 ffff8801d0a6f300 ffff8800b0aff980 ffffffff82f959ce [ 40.358135] ffffffff82f95910 ffffffff843dd460 ffff8801d0be28b8 dffffc0000000000 [ 40.366087] Call Trace: [ 40.368638] [] ? nfqnl_nf_hook_drop+0x100/0x3a0 [ 40.374921] [] nf_queue_nf_hook_drop+0xbe/0x1d0 [ 40.381202] [] ? nf_queue_entry_release_refs+0x150/0x150 [ 40.388271] [] nf_unregister_net_hook+0x2ab/0x350 [ 40.394725] [] netfilter_net_exit+0x40/0xb0 [ 40.400658] [] ? nf_unregister_net_hooks+0x60/0x60 [ 40.407200] [] ops_exit_list.isra.4+0xae/0x150 [ 40.413394] [] setup_net+0x221/0x3e0 [ 40.418719] [] ? ops_init+0x3a0/0x3a0 [ 40.424132] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 40.430939] [] ? kmem_cache_alloc+0x219/0x290 [ 40.437054] [] copy_net_ns+0xd2/0x190 [ 40.442470] [] create_new_namespaces+0x2f6/0x610 [ 40.448837] [] copy_namespaces+0x291/0x320 [ 40.454683] [] ? copy_namespaces+0x3e/0x320 [ 40.460617] [] copy_process+0x1d3a/0x60c0 [ 40.466375] [] ? __cleanup_sighand+0x50/0x50 [ 40.472397] [] ? __fsnotify_parent+0xbc/0x340 [ 40.478502] [] ? fsnotify+0x5ad/0xee0 [ 40.483913] [] ? fsnotify+0xee0/0xee0 [ 40.489326] [] _do_fork+0x151/0xe00 [ 40.494564] [] ? fork_idle+0x270/0x270 [ 40.500066] [] ? SyS_write+0x13d/0x1b0 [ 40.505570] [] ? SyS_read+0x1b0/0x1b0 [ 40.510986] [] SyS_clone+0x37/0x50 [ 40.516140] [] ? entry_INT80_compat+0x50/0x50 [ 40.522245] [] do_fast_syscall_32+0x314/0x890 [ 40.528353] [] sysenter_flags_fixed+0xd/0x17 [ 40.534372] 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 [ 40.560636] RIP [] nfqnl_nf_hook_drop+0x190/0x3a0 [ 40.567202] RSP [ 40.571233] ---[ end trace 06d104191dc1b6ab ]--- [ 40.575987] Kernel panic - not syncing: Fatal exception [ 40.581725] Dumping ftrace buffer: [ 40.585230] (ftrace buffer empty) [ 40.588902] Kernel Offset: disabled [ 40.592489] Rebooting in 86400 seconds..