Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 6 PID: 897 at lib/list_debug.c:62 __list_del_entry+0x82/0xd0()
list_del corruption. next->prev should be ffff8800240da978, but was ffff88021dea1db8
Modules linked in: rfcomm ip6t_rpfilter ip6t_REJECT xt_conntrack bnep ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw binfmt_misc vfat fat x86_pkg_temp_thermal snd_hda_codec_hdmi coretemp kvm_intel kvm snd_hda_codec_realtek snd_hda_intel snd_hda_codec arc4 snd_hwdep ath9k ath9k_common ath9k_hw ath snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer snd soundcore ath3k joydev i2c_i801 mac80211 cfg80211 btusb bluetooth iTCO_wdt uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev microcode msi_wmi iTCO_vendor_support sparse_keymap media rfkill serio_raw alx lpc_ich mfd_core mdio mei_me mei shpchp acpi_cpufreq mperf nfsd auth_rpcgss nfs_acl lockd sunrpc btrfs libcrc32c xor zlib_deflate raid6_pq dm_crypt usb_storage hid_logitech_dj nouveau i915 ttm crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel drm i2c_core mxm_wmi wmi video
CPU: 6 PID: 897 Comm: btrfs-endio-wri Not tainted 3.11.10-301.fc20.x86_64 #1
Hardware name: Micro-Star International Co., Ltd. GS70 2OD/MS-1771, BIOS E1771IMS.50E 12/03/2013
 0000000000000009 ffff8801011c5c70 ffffffff816441db ffff8801011c5cb8
 ffff8801011c5ca8 ffffffff8106715d ffff8800240da978 ffff8801598999e0
 ffff8800240daa20 ffff880220e67800 0000000000000000 ffff8801011c5d08
Call Trace:
 [<ffffffff816441db>] dump_stack+0x45/0x56
 [<ffffffff8106715d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff810671cc>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffff81311dc2>] __list_del_entry+0x82/0xd0
 [<ffffffffa02e1a02>] btrfs_remove_ordered_extent+0x182/0x1a0 [btrfs]
 [<ffffffffa02d5d8a>] btrfs_finish_ordered_io+0x12a/0x960 [btrfs]
 [<ffffffff81073c82>] ? del_timer_sync+0x52/0x60
 [<ffffffff81646e8b>] ? schedule_timeout+0x17b/0x2c0
 [<ffffffffa02d67a5>] finish_ordered_fn+0x15/0x20 [btrfs]
 [<ffffffffa02f65fb>] worker_loop+0x12b/0x500 [btrfs]
 [<ffffffffa02f64d0>] ? btrfs_queue_worker+0x300/0x300 [btrfs]
 [<ffffffff81088660>] kthread+0xc0/0xd0
 [<ffffffff810885a0>] ? insert_kthread_work+0x40/0x40
 [<ffffffff8165332c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810885a0>] ? insert_kthread_work+0x40/0x40