Description of problem: Just booted, loged in, and started KDE Additional info: reporter: libreport-2.3.0 WARNING: CPU: 3 PID: 76 at kernel/sched/core.c:7303 __might_sleep+0xbd/0xd0() do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff818709e5>] wait_for_completion_io+0xf5/0x150 Modules linked in: v4l2_common videodev media rt2800pci(+) rt2800mmio rt2800lib rt2x00pci rt2x00mmio kvm_amd rt2x00lib snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi mac80211 snd_hda_intel snd_hda_controller snd_hda_codec kvm cfg80211 snd_hwdep snd_seq eeprom_93cx6 crc_ccitt rfkill snd_seq_device serio_raw snd_pcm k10temp edac_core edac_mce_amd snd_timer snd soundcore sp5100_tco shpchp i2c_piix4 acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace binfmt_misc raid1 btrfs xor raid6_pq radeon uas usb_storage 8021q garp i2c_algo_bit mrp drm_kms_helper stp llc ttm drm r8169 mii wmi sunrpc CPU: 3 PID: 76 Comm: kworker/u12:2 Not tainted 3.19.0-0.rc3.git2.1.fc22.x86_64 #1 Hardware name: Hewlett-Packard p6710f/2AB1 , BIOS 6.07 05/04/2011 Workqueue: writeback bdi_writeback_workfn (flush-9:127) 0000000000000000 00000000d56aa949 ffff8800c99e3208 ffffffff8186cc07 0000000000000000 ffff8800c99e3260 ffff8800c99e3248 ffffffff810ac82a ffff8800c99d4150 ffffffff81cb6da0 00000000000006e3 0000000000000000 Call Trace: [<ffffffff8186cc07>] dump_stack+0x4c/0x65 [<ffffffff810ac82a>] warn_slowpath_common+0x8a/0xc0 [<ffffffff810ac8b5>] warn_slowpath_fmt+0x55/0x70 [<ffffffff818709e5>] ? wait_for_completion_io+0xf5/0x150 [<ffffffff818709e5>] ? wait_for_completion_io+0xf5/0x150 [<ffffffff810dd5fd>] __might_sleep+0xbd/0xd0 [<ffffffff81028c4a>] ? native_sched_clock+0x2a/0xa0 [<ffffffff813e9a6f>] generic_make_request_checks+0x3f/0x620 [<ffffffff81109f9c>] ? mark_held_locks+0x7c/0xb0 [<ffffffff81875f66>] ? _raw_spin_unlock_irqrestore+0x36/0x70 [<ffffffff8110a12d>] ? trace_hardirqs_on_caller+0x15d/0x200 [<ffffffff813ea077>] generic_make_request+0x27/0x150 [<ffffffffa0451568>] raid1_unplug+0x108/0x160 [raid1] [<ffffffff813ed92a>] blk_flush_plug_list+0x9a/0x260 [<ffffffff81870247>] io_schedule_timeout+0x87/0x110 [<ffffffff81875fd0>] ? _raw_spin_unlock_irq+0x30/0x50 [<ffffffff81870a07>] wait_for_completion_io+0x117/0x150 [<ffffffff810e6a00>] ? wake_up_state+0x20/0x20 [<ffffffff813f5787>] __blkdev_issue_zeroout+0x227/0x270 [<ffffffff8187093c>] ? wait_for_completion_io+0x4c/0x150 [<ffffffff813f58b9>] blkdev_issue_zeroout+0xe9/0xf0 [<ffffffff81106d0e>] ? __lock_is_held+0x5e/0x90 [<ffffffff8134093c>] ext4_ext_zeroout.isra.33+0x4c/0x60 [<ffffffff81346a17>] ext4_ext_handle_unwritten_extents+0x6a7/0x10c0 [<ffffffff81106d0e>] ? __lock_is_held+0x5e/0x90 [<ffffffff81347d7e>] ext4_ext_map_blocks+0x91e/0x13b0 [<ffffffff81314d53>] ? ext4_map_blocks+0x123/0x580 [<ffffffff81314d53>] ? ext4_map_blocks+0x123/0x580 [<ffffffff81314d76>] ext4_map_blocks+0x146/0x580 [<ffffffff81318a20>] ext4_writepages+0x810/0x13b0 [<ffffffff811f3111>] do_writepages+0x21/0x40 [<ffffffff812a86cb>] __writeback_single_inode+0x6b/0x880 [<ffffffff812a9d35>] writeback_sb_inodes+0x295/0x5e0 [<ffffffff812aa11f>] __writeback_inodes_wb+0x9f/0xd0 [<ffffffff812aa573>] wb_writeback+0x423/0x7a0 [<ffffffff811f1700>] ? bdi_dirty_limit+0x40/0xe0 [<ffffffff812aae10>] bdi_writeback_workfn+0x280/0x920 [<ffffffff810cde05>] process_one_work+0x215/0x840 [<ffffffff810cdd6e>] ? process_one_work+0x17e/0x840 [<ffffffff810ce52b>] ? worker_thread+0xfb/0x4b0 [<ffffffff810ce49b>] worker_thread+0x6b/0x4b0 [<ffffffff810ce430>] ? process_one_work+0x840/0x840 [<ffffffff810d492f>] kthread+0x11f/0x140 [<ffffffff810eab85>] ? local_clock+0x25/0x30 [<ffffffff810d4810>] ? kthread_create_on_node+0x250/0x250 [<ffffffff81876b7c>] ret_from_fork+0x7c/0xb0 [<ffffffff810d4810>] ? kthread_create_on_node+0x250/0x250
Created attachment 980257 [details] File: dmesg
This bug appears to have been reported against 'rawhide' during the Fedora 22 development cycle. Changing version to '22'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora22
https://bugzilla.kernel.org/show_bug.cgi?id=98191 https://bugzilla.redhat.com/show_bug.cgi?id=1220519
*********** 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 22 kernel bugs. Fedora 22 has now been rebased to 4.2.3-200.fc22. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 23, and are still experiencing this issue, please change the version to Fedora 23. If you experience different issues, please open a new bug report for those.
Sorry, I should have marked this as no longer an issue. (It was, IIRC, fixed before 22 was released.)