libreport version: 2.0.10 cmdline: BOOT_IMAGE=/vmlinuz-3.4.9-2.fc16.x86_64 root=/dev/mapper/vg_sona-lv_root ro rd.md=0 rd.dm=0 KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.lvm.lv=vg_sona/lv_root rd.luks=0 rd.lvm.lv=vg_sona/lv_swap LANG=en_US.UTF-8 backtrace: :WARNING: at drivers/gpu/drm/i915/i915_drv.c:398 gen6_gt_check_fifodbg+0x41/0x60 [i915]() :Hardware name: IdeaPad Z470 :MMIO read or write has been dropped ffffffff :Modules linked in: tcp_lp fuse lockd rfcomm tpm_bios bnep ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ftp nf_conntrack_netbios_ns nf_conntrack_broadcast ip6table_filter nf_conntrack_ipv4 ip6_tables nf_defrag_ipv4 xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_realtek arc4 uinput iwlwifi mac80211 coretemp cfg80211 snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device ideapad_laptop sparse_keymap snd_pcm uvcvideo videobuf2_core videodev media videobuf2_vmalloc btusb videobuf2_memops bluetooth snd_timer iTCO_wdt iTCO_vendor_support joydev r8169 snd soundcore snd_page_alloc i2c_i801 mii rfkill serio_raw sunrpc microcode binfmt_misc crc32c_intel ghash_clmulni_intel i915 nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi video wmi [last unloaded: scsi_wait_scan] :Pid: 12712, comm: kworker/u:32 Not tainted 3.4.9-2.fc16.x86_64 #1 :Call Trace: : [<ffffffff8105808f>] warn_slowpath_common+0x7f/0xc0 : [<ffffffff81058186>] warn_slowpath_fmt+0x46/0x50 : [<ffffffff812cfa1a>] ? delay_tsc+0x4a/0x80 : [<ffffffffa01842d1>] gen6_gt_check_fifodbg+0x41/0x60 [i915] : [<ffffffffa018482a>] __gen6_gt_force_wake_put+0x1a/0x20 [i915] : [<ffffffffa0184897>] gen6_gt_force_wake_put+0x47/0x60 [i915] : [<ffffffffa018ab6d>] gen6_pm_rps_work+0x14d/0x190 [i915] : [<ffffffff81081370>] ? async_schedule+0x20/0x20 : [<ffffffffa018aa20>] ? ironlake_irq_handler+0x470/0x470 [i915] : [<ffffffff81073cfe>] process_one_work+0x11e/0x470 : [<ffffffff81074ddf>] worker_thread+0x15f/0x360 : [<ffffffff81074c80>] ? manage_workers+0x230/0x230 : [<ffffffff81079a93>] kthread+0x93/0xa0 : [<ffffffff81607064>] kernel_thread_helper+0x4/0x10 : [<ffffffff81079a00>] ? kthread_freezable_should_stop+0x70/0x70 : [<ffffffff81607060>] ? gs_change+0x13/0x13
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*** This bug has been marked as a duplicate of bug 809773 ***