Additional info:
reporter:       libreport-2.1.4
general protection fault: 0000 [#1] SMP 
Modules linked in: vhost_net macvtap macvlan hidp fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_CHECKSUM iptable_mangle tun bridge stp llc rfcomm bnep ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter xt_conntrack nf_conntrack ip6_tables xfs libcrc32c snd_hda_codec_hdmi iTCO_wdt arc4 snd_hda_codec_conexant iwldvm iTCO_vendor_support mac80211 snd_usb_audio snd_hda_intel snd_hda_codec snd_usbmidi_lib snd_hwdep iwlwifi snd_rawmidi snd_seq snd_seq_device lpc_ich snd_pcm mperf coretemp kvm_intel kvm snd_page_alloc sdhci_pci snd_timer btusb cfg80211 sdhci mei bluetooth e1000e mfd_core mmc_core microcode uvcvideo thinkpad_acpi ptp i2c_i801 videobuf2_vmalloc videobuf2_memops snd soundcore videobuf2_core videodev media rfkill pps_core wmi uinput dm_crypt crc32_pclmul crc32c_intel i915 ghash_clmulni_intel firewire_ohci i2c_algo_bit drm_kms_helper firewire_core drm crc_itu_t usb_storage i2c_core video
CPU 3 
Pid: 3193, comm: vhost-3192 Not tainted 3.9.5-301.fc19.x86_64 #1 LENOVO 4243BQ3/4243BQ3
RIP: 0010:[<ffffffff8113ca3a>]  [<ffffffff8113ca3a>] put_page+0xa/0x60
RSP: 0018:ffff880159aa7c80  EFLAGS: 00010202
RAX: ffff880202f12cc0 RBX: 0000000000000012 RCX: 0000000000000003
RDX: 0000000000000140 RSI: 0000000000000246 RDI: 09a0000111920056
RBP: ffff880159aa7c88 R08: 0000000000000001 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801008df600
R13: ffffffffa074cf64 R14: ffff8801008df600 R15: ffff880159aa8800
FS:  0000000000000000(0000) GS:ffff88021e2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc89eb3c000 CR3: 0000000159bfa000 CR4: 00000000000427e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process vhost-3192 (pid: 3193, threadinfo ffff880159aa6000, task ffff88019ef2aee0)
Stack:
 0000000000000012 ffff880159aa7ca8 ffffffff8152c7e7 ffff8801008df600
 ffff8801008df600 ffff880159aa7cc0 ffffffff8152c87a 000000000000c162
 ffff880159aa7ce8 ffffffff8152c942 000000000000c162 000000000000c16e
Call Trace:
 [<ffffffff8152c7e7>] skb_release_data+0x87/0x100
 [<ffffffff8152c87a>] __kfree_skb+0x1a/0xb0
 [<ffffffff8152c942>] kfree_skb+0x32/0x90
 [<ffffffffa074cf64>] tun_get_user+0x6b4/0x7a0 [tun]
 [<ffffffffa074d0a7>] tun_sendmsg+0x57/0x80 [tun]
 [<ffffffffa07c6a58>] handle_tx+0x1c8/0x640 [vhost_net]
 [<ffffffffa07c6f05>] handle_tx_kick+0x15/0x20 [vhost_net]
 [<ffffffffa07c381d>] vhost_worker+0xed/0x190 [vhost_net]
 [<ffffffffa07c3730>] ? __vhost_add_used_n+0x100/0x100 [vhost_net]
 [<ffffffff810801f0>] kthread+0xc0/0xd0
 [<ffffffff81080130>] ? insert_kthread_work+0x40/0x40
 [<ffffffff8164e6ec>] ret_from_fork+0x7c/0xb0
 [<ffffffff81080130>] ? insert_kthread_work+0x40/0x40
Code: 00 00 01 75 f3 e9 b6 fe ff ff be 47 01 00 00 48 c7 c7 e7 4b 9d 81 e8 b6 02 f2 ff e9 a0 fe ff ff 90 66 66 66 66 90 55 48 89 e5 53 <48> f7 07 00 c0 00 00 48 89 fb 75 30 8b 47 1c 85 c0 74 16 f0 ff 
RIP  [<ffffffff8113ca3a>] put_page+0xa/0x60
 RSP <ffff880159aa7c80>

Potential duplicate: bug 975065