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: 1 PID: 3371 Comm: syzkaller057992 Not tainted 4.4.104-ged884eb #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b752af80 task.stack: ffff8801d3380000
RIP: 0010:[<ffffffff82f45704>]  [<ffffffff82f45704>] __read_once_size /syzkaller/managers/android-44-kasan-gce/kernel/include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff82f45704>]  [<ffffffff82f45704>] nfqnl_nf_hook_drop+0x154/0x310 /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/nfnetlink_queue.c:874
RSP: 0018:ffff8801d3387ba0  EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000003 RCX: 1ffffffff08fc631
RDX: 0000000000000000 RSI: ffffffff839fd420 RDI: ffffffff847e3188
RBP: ffff8801d3387bd0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff1003a670f40 R12: dffffc0000000000
R13: ffff8800b5eaacf8 R14: 0000000000000038 R15: 00000000000000b8
FS:  0000000000d57880(0063) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fef96998000 CR3: 00000001d56a3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff82f4568d ffffffff83cc3e60 ffff8801d71a5ac0 ffff8800b5eaacf8
 ffff8801d71a6578 ffffffff843dd188 ffff8801d3387c00 ffffffff82f3da2b
 ffffffff82f3d990 ffff8800b5eaacf8 ffffffff843dd160 ffff8800b5eaacf0
Call Trace:
 [<ffffffff82f3da2b>] nf_queue_nf_hook_drop+0x9b/0x180 /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/nf_queue.c:108
 [<ffffffff82f39cc4>] nf_unregister_net_hook+0x1f4/0x310 /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/core.c:154
 [<ffffffff82f39e66>] nf_unregister_hook_list /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/core.c:434 [inline]
 [<ffffffff82f39e66>] netfilter_net_exit+0x36/0xa0 /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/core.c:466
 [<ffffffff82dd4abb>] ops_exit_list.isra.4+0x8b/0x120 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/net_namespace.c:134
 [<ffffffff82dd662e>] setup_net+0x20e/0x3d0 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/net_namespace.c:303
 [<ffffffff82dd7a66>] copy_net_ns+0xa6/0x140 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/net_namespace.c:369
 [<ffffffff81187e83>] create_new_namespaces+0x2d3/0x580 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/nsproxy.c:95
 [<ffffffff811885db>] unshare_nsproxy_namespaces+0x8b/0x1a0 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/nsproxy.c:190
 [<ffffffff81124d67>] SYSC_unshare /syzkaller/managers/android-44-kasan-gce/kernel/kernel/fork.c:2059 [inline]
 [<ffffffff81124d67>] SyS_unshare+0x357/0x6b0 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/fork.c:2009
 [<ffffffff8374b236>] entry_SYSCALL_64_fastpath+0x16/0x76
Code: 74 0d 80 3d a6 d5 88 01 00 0f 84 b0 00 00 00 4d 8d 77 38 49 bc 00 00 00 00 00 fc ff df 49 81 c7 b8 00 00 00 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 0f 85 9f 01 00 00 49 8b 1e e8 59 fb 32 fe 48 85 
RIP  [<ffffffff82f45704>] __read_once_size /syzkaller/managers/android-44-kasan-gce/kernel/include/linux/compiler.h:218 [inline]
RIP  [<ffffffff82f45704>] nfqnl_nf_hook_drop+0x154/0x310 /syzkaller/managers/android-44-kasan-gce/kernel/net/netfilter/nfnetlink_queue.c:874
 RSP <ffff8801d3387ba0>
---[ end trace daade15c82ebaa31 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..