Additional info: reporter: libreport-2.1.10 WARNING: CPU: 0 PID: 7 at kernel/workqueue.c:822 wq_worker_waking_up+0x53/0x70() Modules linked in: nls_utf8 isofs loop lp parport vfat fat usb_storage fuse ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack xt_CHECKSUM iptable_mangle tun bridge stp llc bnep bluetooth joydev cyapa iTCO_wdt iTCO_vendor_support x86_pkg_temp_thermal coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel chromeos_laptop microcode serio_raw i2c_i801 lpc_ich mfd_core r8169 mii uvcvideo videobuf2_vmalloc arc4 videobuf2_memops videobuf2_core ath9k videodev ath9k_common ath9k_hw media ath mac80211 snd_hda_codec_hdmi cfg80211 snd_hda_codec_cirrus rfkill snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm shpchp snd_page_alloc snd_timer snd soundcore mei_me mei uinput binfmt_misc i915 i2c_algo_bit drm_kms_helper drm i2c_core video CPU: 0 PID: 7 Comm: migration/0 Not tainted 3.12.5-302.fc21.x86_64 #1 Hardware name: SAMSUNG Lumpy, BIOS 12/30/2013 0000000000000009 ffff880149b25c50 ffffffff81662c41 0000000000000000 ffff880149b25c88 ffffffff810691dd 0000000000000001 ffff88014fb14540 ffff88006505b73c 0000000000000046 0000000000000001 ffff880149b25c98 Call Trace: [<ffffffff81662c41>] dump_stack+0x45/0x56 [<ffffffff810691dd>] warn_slowpath_common+0x7d/0xa0 [<ffffffff810692ba>] warn_slowpath_null+0x1a/0x20 [<ffffffff81084863>] wq_worker_waking_up+0x53/0x70 [<ffffffff81098f10>] ttwu_do_activate.constprop.88+0x50/0x70 [<ffffffff8109ac35>] try_to_wake_up+0x1e5/0x290 [<ffffffff8109ad52>] default_wake_function+0x12/0x20 [<ffffffff81093b28>] __wake_up_common+0x58/0x90 [<ffffffff81099290>] ? __migrate_task+0x150/0x150 [<ffffffff810953cc>] complete+0x3c/0x50 [<ffffffff810e93ed>] cpu_stop_signal_done+0x2d/0x30 [<ffffffff810e96d2>] cpu_stopper_thread+0xa2/0x130 [<ffffffff810977b0>] ? finish_task_switch+0xb0/0xe0 [<ffffffff8166743c>] ? __schedule+0x2bc/0x750 [<ffffffff810932ef>] smpboot_thread_fn+0xff/0x1b0 [<ffffffff810931f0>] ? lg_local_lock+0x40/0x40 [<ffffffff8108b0d0>] kthread+0xc0/0xd0 [<ffffffff8108b010>] ? insert_kthread_work+0x40/0x40 [<ffffffff81671bbc>] ret_from_fork+0x7c/0xb0 [<ffffffff8108b010>] ? insert_kthread_work+0x40/0x40 Potential duplicate: bug 1045786
Created attachment 848774 [details] File: dmesg
*** This bug has been marked as a duplicate of bug 1045786 ***