Description of problem: it just appeared somewhere in the background ... guess it is connected to the fact that my machine got frozen (completely, no sysrq reaction) so I had to poweroff it by hardware switch Additional info: reporter: libreport-2.1.10 WARNING: CPU: 2 PID: 3809 at lib/list_debug.c:33 __list_add+0xac/0xc0() list_add corruption. prev->next should be next (ffff880247fbb6e8), but was ffff880404fbdc58. (prev=ffff880405d550f0). Modules linked in: rfcomm bnep snd_hda_codec_hdmi snd_hda_codec_realtek x86_pkg_temp_thermal coretemp iTCO_wdt iTCO_vendor_support arc4 kvm_intel kvm iwldvm snd_hda_intel snd_hda_codec mac80211 btusb snd_seq microcode uvcvideo serio_raw videobuf2_vmalloc bluetooth videobuf2_memops snd_usb_audio i2c_i801 snd_usbmidi_lib sdhci_pci snd_hwdep i915 snd_rawmidi snd_seq_device iwlwifi snd_pcm sdhci videobuf2_core i2c_algo_bit mmc_core lpc_ich videodev cfg80211 snd_page_alloc media drm_kms_helper mfd_core snd_timer e1000e thinkpad_acpi shpchp drm ptp mei_me i2c_core pps_core mei wmi snd soundcore rfkill video binfmt_misc btrfs libcrc32c xor raid6_pq dm_crypt crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel usb_storage CPU: 2 PID: 3809 Comm: kworker/u16:2 Not tainted 3.12.6-300.fc20.x86_64 #1 Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET94WW (2.54 ) 05/23/2013 Workqueue: writeback bdi_writeback_workfn (flush-btrfs-1) 0000000000000009 ffff880247fbb570 ffffffff816630c1 ffff880247fbb5b8 ffff880247fbb5a8 ffffffff810691dd ffff880405d552f0 ffff880247fbb6e8 ffff880405d550f0 000000000005e000 ffff8803f0f1e500 ffff880247fbb608 Call Trace: [<ffffffff816630c1>] dump_stack+0x45/0x56 [<ffffffff810691dd>] warn_slowpath_common+0x7d/0xa0 [<ffffffff8106924c>] warn_slowpath_fmt+0x4c/0x50 [<ffffffff8131b45c>] __list_add+0xac/0xc0 [<ffffffffa00ca84e>] setup_cluster_no_bitmap+0x20e/0x260 [btrfs] [<ffffffffa00ccde2>] btrfs_find_space_cluster+0x112/0x270 [btrfs] [<ffffffffa00ccad6>] ? btrfs_alloc_from_cluster+0x36/0x230 [btrfs] [<ffffffffa0079c17>] find_free_extent+0x4c7/0xbd0 [btrfs] [<ffffffffa007a43d>] btrfs_reserve_extent+0xad/0x1c0 [btrfs] [<ffffffffa00936a5>] cow_file_range+0x135/0x400 [btrfs] [<ffffffffa009476d>] run_delalloc_range+0x34d/0x390 [btrfs] [<ffffffffa00a8c49>] ? find_lock_delalloc_range.constprop.46+0x1b9/0x1f0 [btrfs] [<ffffffffa00a9e64>] __extent_writepage+0x304/0x760 [btrfs] [<ffffffffa00a8cf0>] ? end_extent_writepage+0x70/0x70 [btrfs] [<ffffffffa00aa542>] extent_write_cache_pages.isra.32.constprop.51+0x282/0x3e0 [btrfs] [<ffffffffa00ab8ad>] extent_writepages+0x4d/0x70 [btrfs] [<ffffffffa00916e0>] ? btrfs_submit_direct+0x690/0x690 [btrfs] [<ffffffffa008ee98>] btrfs_writepages+0x28/0x30 [btrfs] [<ffffffff8114deee>] do_writepages+0x1e/0x40 [<ffffffff811d5a20>] __writeback_single_inode+0x40/0x220 [<ffffffff811d636f>] writeback_sb_inodes+0x19f/0x400 [<ffffffff811d666f>] __writeback_inodes_wb+0x9f/0xd0 [<ffffffff811d6df3>] wb_writeback+0x233/0x2b0 [<ffffffff811d85a3>] bdi_writeback_workfn+0x2c3/0x430 [<ffffffff810835f6>] process_one_work+0x176/0x430 [<ffffffff8108422b>] worker_thread+0x11b/0x3a0 [<ffffffff81084110>] ? rescuer_thread+0x350/0x350 [<ffffffff8108b0d0>] kthread+0xc0/0xd0 [<ffffffff8108b010>] ? insert_kthread_work+0x40/0x40 [<ffffffff8167207c>] ret_from_fork+0x7c/0xb0 [<ffffffff8108b010>] ? insert_kthread_work+0x40/0x40
Created attachment 848290 [details] File: dmesg
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 20 kernel bugs. Fedora 20 has now been rebased to 3.13.4-200.fc20. Please test this kernel update and let us know if you issue has been resolved or if it is still present with the newer kernel. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug has been in a needinfo state for several weeks and is being closed with insufficient data due to inactivity. If this is still an issue with Fedora 20, please feel free to reopen the bug and provide the additional information requested.