pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 14675 Comm: syz-executor2 Not tainted 4.4.107-g610c835 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d95a5f00 task.stack: ffff8801d59d8000
RIP: 0010:[<ffffffff82f9da40>]  [<ffffffff82f9da40>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff82f9da40>]  [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 net/netfilter/nfnetlink_queue.c:874
RSP: 0018:ffff8801d59df998  EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39
RDX: 0000000000010000 RSI: ffffc90002c76000 RDI: ffffffff847e4480
RBP: ffff8801d59df9c8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff1003ab3befe R12: dffffc0000000000
R13: ffff8800b7369968 R14: 0000000000000038 R15: 00000000000000b8
FS:  00007fc16c2d2700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020016000 CR3: 00000000b4bca000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8800b2f99e00 ffff8800b7369968
 ffff8800b7369968 ffff8800b7369960 ffff8801d59df9f8 ffffffff82f959ce
 ffffffff82f95910 ffffffff843dd460 ffff8800b2f9a8b8 dffffc0000000000
Call Trace:
 [<ffffffff82f959ce>] nf_queue_nf_hook_drop+0xbe/0x1d0 net/netfilter/nf_queue.c:108
 [<ffffffff82f9172b>] nf_unregister_net_hook+0x2ab/0x350 net/netfilter/core.c:154
 [<ffffffff82f91870>] nf_unregister_hook_list net/netfilter/core.c:434 [inline]
 [<ffffffff82f91870>] netfilter_net_exit+0x40/0xb0 net/netfilter/core.c:466
 [<ffffffff82e2b85e>] ops_exit_list.isra.4+0xae/0x150 net/core/net_namespace.c:134
 [<ffffffff82e2d541>] setup_net+0x221/0x3e0 net/core/net_namespace.c:303
 [<ffffffff82e2eb12>] copy_net_ns+0xd2/0x190 net/core/net_namespace.c:369
 [<ffffffff81190526>] create_new_namespaces+0x2f6/0x610 kernel/nsproxy.c:95
 [<ffffffff81190ad1>] copy_namespaces+0x291/0x320 kernel/nsproxy.c:150
 [<ffffffff811245ba>] copy_process+0x1d3a/0x60c0 kernel/fork.c:1500
 [<ffffffff81128d61>] _do_fork+0x151/0xe00 kernel/fork.c:1778
 [<ffffffff81129ae7>] SYSC_clone kernel/fork.c:1887 [inline]
 [<ffffffff81129ae7>] SyS_clone+0x37/0x50 kernel/fork.c:1881
 [<ffffffff83773d36>] entry_SYSCALL_64_fastpath+0x16/0x76
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 
RIP  [<ffffffff82f9da40>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff82f9da40>] nfqnl_nf_hook_drop+0x190/0x3a0 net/netfilter/nfnetlink_queue.c:874
 RSP <ffff8801d59df998>
---[ end trace 5cca3d6c95e46f47 ]---