Hi All, With freshly compiled 4.2.1, I get the following kernel warning: [mer set 23 09:22:27 2015] ------------[ cut here ]------------ [mer set 23 09:22:27 2015] WARNING: CPU: 3 PID: 0 at drivers/gpu/drm/i915/intel_display.c:11098 intel_check_page_flip+0xb2/0xfb() [mer set 23 09:22:27 2015] Kicking stuck page flip: queued at 1926, now 1930 [mer set 23 09:22:27 2015] Modules linked in: joydev bnep algif_skcipher btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common cdc_wdm videodev cdc_acm hp_wmi sparse_keymap intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_codec_hdmi kvm snd_hda_codec_generic crct10dif_ pclmul crc32_pclmul iwldvm snd_hda_intel psmouse snd_hda_codec snd_hwdep snd_hda_core iwlwifi snd_pcm snd_timer snd soundcore wmi hp_accel lis3lv02d hp_wireless sch_fq_codel vboxn etadp(O) vboxnetflt(O) vboxdrv(O) dm_zero dm_persistent_data dm_service_time dm_round_robin dm_queue_length dm_multipath dm_delay virtio_pci virtio_blk virtio_balloon virtio_ring virtio fuse overlay linear raid0 dm_raid dm_snapshot dm_bufio dm_mirror dm_region_hash dm_log hid_apple ohci_pci [mer set 23 09:22:27 2015] ohci_hcd uhci_hcd [mer set 23 09:22:27 2015] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W O 4.2.1 #1 [mer set 23 09:22:27 2015] Hardware name: Hewlett-Packard HP EliteBook Folio 9470m/18DF, BIOS 68IBD Ver. F.40 02/01/2013 [mer set 23 09:22:27 2015] 0000000000000000 0000000000000009 ffffffff818f9bb5 ffff88023eac3de8 [mer set 23 09:22:27 2015] ffffffff810c4468 ffff8802320c7000 ffffffff815b7a46 0000000000000046 [mer set 23 09:22:27 2015] ffff8800b281d000 ffff8801f50f4d80 ffff880234c7c000 ffff8800b281d1a8 [mer set 23 09:22:27 2015] Call Trace: [mer set 23 09:22:27 2015] <IRQ> [<ffffffff818f9bb5>] ? dump_stack+0x47/0x67 [mer set 23 09:22:27 2015] [<ffffffff810c4468>] ? warn_slowpath_common+0x9d/0xb5 [mer set 23 09:22:27 2015] [<ffffffff815b7a46>] ? intel_check_page_flip+0xb2/0xfb [mer set 23 09:22:27 2015] [<ffffffff810c44ca>] ? warn_slowpath_fmt+0x4a/0x4f [mer set 23 09:22:27 2015] [<ffffffff815a64fb>] ? __intel_pageflip_stall_check+0xb2/0xdc [mer set 23 09:22:27 2015] [<ffffffff815b7a46>] ? intel_check_page_flip+0xb2/0xfb [mer set 23 09:22:27 2015] [<ffffffff8158b4a0>] ? ironlake_irq_handler+0x382/0x919 [mer set 23 09:22:27 2015] [<ffffffff81102ee8>] ? handle_irq_event_percpu+0x3e/0x190 [mer set 23 09:22:27 2015] [<ffffffff81103079>] ? handle_irq_event+0x3f/0x62 [mer set 23 09:22:27 2015] [<ffffffff8110597b>] ? handle_edge_irq+0xd4/0xf3 [mer set 23 09:22:27 2015] [<ffffffff81004baa>] ? handle_irq+0x1f/0x23 [mer set 23 09:22:27 2015] [<ffffffff819030c5>] ? do_IRQ+0x45/0xc4 [mer set 23 09:22:27 2015] [<ffffffff81901568>] ? common_interrupt+0x68/0x68 [mer set 23 09:22:27 2015] <EOI> [<ffffffff811198fd>] ? clockevents_program_event+0xd2/0xee [mer set 23 09:22:27 2015] [<ffffffff8172c01d>] ? cpuidle_enter_state+0x129/0x1fe [mer set 23 09:22:27 2015] [<ffffffff8172bfe2>] ? cpuidle_enter_state+0xee/0x1fe [mer set 23 09:22:27 2015] [<ffffffff810f20cd>] ? cpu_startup_entry+0x1f9/0x2e0 [mer set 23 09:22:27 2015] [<ffffffff8102896e>] ? start_secondary+0x14f/0x167 [mer set 23 09:22:27 2015] ---[ end trace 58065659e5553827 ]---
IIRC, this does not happens with previous kernel (4.2.0) Of course I'm available for any information or test, but please CC: me as I'm not subscribed to lkml. Many thanks! -- Fabio -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
