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:
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Modules linked in:
CPU: 0 PID: 3385 Comm: syzkaller316870 Not tainted 4.4.107-g610c835 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cfbb97c0 task.stack: ffff8800b3978000
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:ffff8800b397fba8  EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000003 RCX: ffffffff82f9da39
RDX: 0000000000000000 RSI: ffffffff839fd520 RDI: ffffffff847e4480
RBP: ffff8800b397fbd8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff1001672ff40 R12: dffffc0000000000
R13: ffff8801cfee1668 R14: 0000000000000038 R15: 00000000000000b8
FS:  00000000026b9880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff37fe86000 CR3: 00000000b4e99000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff82f9d9b0 ffffffff83cc4ae0 ffff8801cc2e9e00 ffff8801cfee1668
 ffff8801cfee1668 ffff8801cfee1660 ffff8800b397fc08 ffffffff82f959ce
 ffffffff82f95910 ffffffff843dd460 ffff8801cc2ea8b8 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
 [<ffffffff81190dde>] unshare_nsproxy_namespaces+0xae/0x1e0 kernel/nsproxy.c:190
 [<ffffffff81129eda>] SYSC_unshare kernel/fork.c:2062 [inline]
 [<ffffffff81129eda>] SyS_unshare+0x3da/0x700 kernel/fork.c:2012
 [<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 <ffff8800b397fba8>
---[ end trace 1bb5a4c8c7f35ae7 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..