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: 5010 Comm: syz-executor5 Not tainted 4.4.115-g78d59f1 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c7448000 task.stack: ffff8801d2ed8000
RIP: 0010:[<ffffffff82f9d290>]  [<ffffffff82f9d290>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff82f9d290>]  [<ffffffff82f9d290>] nfqnl_nf_hook_drop+0x190/0x3a0 net/netfilter/nfnetlink_queue.c:879
RSP: 0018:ffff8801d2edfba8  EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9d289
RDX: 0000000000010000 RSI: ffffc90002ced000 RDI: ffffffff84418180
RBP: ffff8801d2edfbd8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff838443e0 R11: 1ffff1003a5dbf40 R12: dffffc0000000000
R13: ffff8801d2fbed88 R14: 0000000000000038 R15: 00000000000000b8
FS:  00007f51c4924700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a2f448 CR3: 00000001d182e000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff82f9d200 ffffffff83cc6620 ffff8801d92cbc00 ffff8801d2fbed88
 ffff8801d2fbed88 ffff8801d2fbed80 ffff8801d2edfc08 ffffffff82f9514e
 ffffffff82f95090 ffffffff843e37e0 ffff8801d92cc6b8 dffffc0000000000
Call Trace:
 [<ffffffff82f9514e>] nf_queue_nf_hook_drop+0xbe/0x1d0 net/netfilter/nf_queue.c:108
 [<ffffffff82f90eab>] nf_unregister_net_hook+0x2ab/0x350 net/netfilter/core.c:154
 [<ffffffff82f90ff0>] nf_unregister_hook_list net/netfilter/core.c:434 [inline]
 [<ffffffff82f90ff0>] netfilter_net_exit+0x40/0xb0 net/netfilter/core.c:466
 [<ffffffff82e2abbe>] ops_exit_list.isra.4+0xae/0x150 net/core/net_namespace.c:134
 [<ffffffff82e2c8a1>] setup_net+0x221/0x3e0 net/core/net_namespace.c:303
 [<ffffffff82e2df12>] copy_net_ns+0xd2/0x190 net/core/net_namespace.c:369
 [<ffffffff81192e06>] create_new_namespaces+0x2f6/0x610 kernel/nsproxy.c:95
 [<ffffffff811936be>] unshare_nsproxy_namespaces+0xae/0x1e0 kernel/nsproxy.c:190
 [<ffffffff8112ca0a>] SYSC_unshare kernel/fork.c:2068 [inline]
 [<ffffffff8112ca0a>] SyS_unshare+0x3da/0x700 kernel/fork.c:2018
 [<ffffffff8377455f>] entry_SYSCALL_64_fastpath+0x1c/0x98
Code: de 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 57 3b 3c fe 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 f4 01 00 00 49 8b 1e e8 fd 8b 2e fe 48 85 
RIP  [<ffffffff82f9d290>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff82f9d290>] nfqnl_nf_hook_drop+0x190/0x3a0 net/netfilter/nfnetlink_queue.c:879
 RSP <ffff8801d2edfba8>
---[ end trace fdd6721fa338b3d2 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..