[39301.878926] ------------[ cut here ]------------
[39301.878999] kernel BUG at fs/inode.c:1442!
[39301.879052] invalid opcode: 0000 [#1] 
[39301.879105] CPU 0 
[39301.879133] Modules linked in: reiserfs xts gf128mul af_packet bridge stp nls_iso8859_1 nls_cp437 vfat fat usb_storage usb_libusual uas arc4 iwlwifi mac80211 joydev snd_hda_codec_hdmi uvcvideo snd_hda_codec_realtek videobuf2_core cfg80211 psmouse snd_hda_intel snd_hda_codec acer_wmi videodev sparse_keymap i2c_i801 rfkill sg v4l2_compat_ioctl32 videobuf2_vmalloc rtc_cmos videobuf2_memops pcspkr wmi iTCO_wdt thermal snd_hwdep serio_raw battery ac i915 evdev mac_hid fbcon tileblit font bitblit softcursor drm_kms_helper drm intel_agp i2c_algo_bit button intel_gtt agpgart i2c_core video atl1c tun kvm_intel kvm fuse cpufreq_conservative cpufreq_ondemand cpufreq_powersave cpufreq_performance acpi_cpufreq freq_table processor thermal_sys hwmon mperf snd_pcm_oss snd_pcm snd_timer snd_page_alloc snd_mixer_oss snd soundcore nfsd lockd nfs_acl auth_rpcgss exportfs loop sunrpc ipv6 usbhid hid power_supply scsi_wait_scan sr_mod cdrom ehci_hcd uhci_hcd usbcore usb_common lzo sd_mod crc_t10dif ata_piix libata scsi_mod cryptd cbc sha256_generic dm_crypt dm_mod aes_x86_64 aes_generic btrfs zlib_deflate crc32c libcrc32c ext4 jbd2 crc16 ext3 jbd ext2 mbcache unix
[39301.880010] 
[39301.880010] Pid: 20915, comm: openvpn Not tainted 3.3.2 #1 Acer Aspire 4810T/Aspire 4810T
[39301.880010] RIP: 0010:[<ffffffff8113b4f7>]  [<ffffffff8113b4f7>] iput+0x1b7/0x1f0
[39301.880010] RSP: 0018:ffff880058af1dd8  EFLAGS: 00010202
[39301.880010] RAX: ffff8800b591ffa0 RBX: ffff8800b591ffa0 RCX: 0000000000000000
[39301.880010] RDX: ffff8800b591f800 RSI: ffff8800b591fba8 RDI: ffff8800b591ffa0
[39301.880010] RBP: ffff880058af1df8 R08: dead000000100100 R09: dead000000200200
[39301.880010] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
[39301.880010] R13: ffff8800b591fb88 R14: ffff8800b3d3f000 R15: ffff880058af1e68
[39301.880010] FS:  00007f0fe5e99700(0000) GS:ffffffff81620000(0000) knlGS:0000000000000000
[39301.880010] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[39301.880010] CR2: 00007ffd75a23000 CR3: 0000000057f86000 CR4: 00000000000406f0
[39301.880010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[39301.880010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[39301.880010] Process openvpn (pid: 20915, threadinfo ffff880058af0000, task ffff8800b53a5980)
[39301.880010] Stack:
[39301.880010]  0000000000000000 ffff8800b591ff70 0000000000000000 ffff8800b591fb88
[39301.880010]  ffff880058af1e18 ffffffff812c9a01 ffff880059afd400 ffffffff81686068
[39301.880010]  ffff880058af1e38 ffffffff812cec2f ffff880058af1e28 ffff8800b591f800
[39301.880010] Call Trace:
[39301.880010]  [<ffffffff812c9a01>] sock_release+0x71/0x90
[39301.880010]  [<ffffffff812cec2f>] sk_release_kernel+0x2f/0x60
[39301.880010]  [<ffffffffa0627915>] tun_free_netdev+0x15/0x20 [tun]
[39301.880010]  [<ffffffff812e2b6c>] netdev_run_todo+0x22c/0x360
[39301.880010]  [<ffffffff812ec37e>] rtnl_unlock+0xe/0x10
[39301.880010]  [<ffffffffa06286e5>] tun_chr_close+0xb5/0x100 [tun]
[39301.880010]  [<ffffffff81124c92>] fput+0xd2/0x210
[39301.880010]  [<ffffffff81121d46>] filp_close+0x66/0x90
[39301.880010]  [<ffffffff81121de8>] sys_close+0x78/0xb0
[39301.880010]  [<ffffffff8137f3a7>] system_call_fastpath+0x16/0x1b
[39301.880010] Code: 89 8b e0 00 00 00 48 8d 8a 00 01 00 00 48 89 8b e8 00 00 00 48 89 82 00 01 00 00 48 8b 43 28 83 80 10 01 00 00 01 e9 8e fe ff ff <0f> 0b be 76 05 00 00 48 c7 c7 fe 3b 55 81 e8 b6 7d f0 ff e9 9f 
[39301.880010] RIP  [<ffffffff8113b4f7>] iput+0x1b7/0x1f0
[39301.880010]  RSP <ffff880058af1dd8>
[39301.901976] ---[ end trace 5ddcafba128ae2ca ]---