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: 28184 Comm: syz-executor2 Not tainted 4.4.107-g610c835 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d7dd4740 task.stack: ffff8801c91b0000
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:ffff8801c91b7920  EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39
RDX: 0000000000010000 RSI: ffffc9000181e000 RDI: ffffffff847e4480
RBP: ffff8801c91b7950 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff10039236ef0 R12: dffffc0000000000
R13: ffff8800b23063c8 R14: 0000000000000038 R15: 00000000000000b8
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6fc4b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000009c296b4 CR3: 00000000ae0d8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801ce125a00 ffff8800b23063c8
 ffff8800b23063c8 ffff8800b23063c0 ffff8801c91b7980 ffffffff82f959ce
 ffffffff82f95910 ffffffff843dd460 ffff8801ce1264b8 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
 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
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 <ffff8801c91b7920>
---[ end trace fc9313c34e9cc625 ]---