Here is the call trace that I mentioned before, however, it can be reproduced in stock kernel with graphic-stress test as well.
Therefore I think it's not a regression.
Please refer for the attachment for the dmesg output for both stock kernel and this BPO kernel.
Here is the call trace that I mentioned before, however, it can be reproduced in stock kernel with graphic-stress test as well.
Therefore I think it's not a regression.
Please refer for the attachment for the dmesg output for both stock kernel and this BPO kernel.
[ 1748.393952] WARNING: CPU: 0 PID: 843 at /build/ buildd/ linux-3. 19.0/drivers/ gpu/drm/ i915/intel_ display. c:3625 intel_crtc_ wait_for_ pending_ flips+0x19a/ 0x230 [i915]() wait_event_ timeout( dev_priv- >pending_ flip_queue, !intel_ crtc_has_ pending_ flip(crtc) , 60*HZ) == 0) temp_thermal intel_powerclamp videobuf2_memops coretemp videobuf2_core v4l2_common videodev kvm_intel media kvm dell_led nouveau snd_hda_ codec_realtek snd_hda_codec_hdmi snd_hda_ codec_generic snd_soc_rt5640 dell_laptop crct10dif_pclmul dcdbas mxm_wmi crc32_pclmul snd_soc_rl6231 snd_hda_intel snd_hda_controller ttm snd_hda_codec snd_soc_core bcma ghash_clmulni_intel aesni_intel i8k aes_x86_64 lrw gf128mul glue_helper ablk_helper joydev cryptd serio_raw snd_compress snd_hwdep snd_pcm_dmaengine i915 snd_pcm i2c_hid snd_seq_midi hid snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer mei_me acpi_pad drm_kms_helper platform i2c_designware_core soundcore shpchp snd_soc_sst_acpi mac_hid 8250_dw lpc_ich wmi parport_pc ppdev lp parport autofs4 rtsx_usb_sdmmc rtsx_usb psmouse ahci r8169 libahci mii sdhci_acpi sdhci da8>] dump_stack+ 0x45/0x57 9aa>] warn_slowpath_ common+ 0x8a/0xc0 a26>] warn_slowpath_ fmt+0x46/ 0x50 319>] ? finish_ wait+0x59/ 0x70 9ca>] intel_crtc_ wait_for_ pending_ flips+0x19a/ 0x230 [i915] 510>] ? wait_woken+ 0x90/0x90 ba3>] intel_crtc_ disable_ planes+ 0x33/0x140 [i915] 91f>] haswell_ crtc_disable+ 0x4f/0x3c0 [i915] 78c>] __intel_ set_mode+ 0x92c/0xc80 [i915] b5e>] ? __kmalloc+ 0x24e/0x280 918>] ? intel_crtc_ set_config+ 0x88/0xf70 [i915] 999>] ? intel_crtc_ set_config+ 0x109/0xf70 [i915] 48b>] intel_crtc_ set_config+ 0xbfb/0xf70 [i915] b16>] drm_mode_ set_config_ internal+ 0x66/0x100 [drm] 1c3>] drm_mode_ setcrtc+ 0x253/0x5a0 [drm] a6f>] drm_ioctl+ 0x1df/0x680 [drm] 230>] do_vfs_ ioctl+0x2e0/ 0x4e0 165>] ? __sb_end_ write+0x35/ 0x70 bd2>] ? vfs_write+ 0x1b2/0x1f0 4b1>] SyS_ioctl+0x81/0xa0 ecd>] system_ call_fastpath+ 0x16/0x1b
[ 1748.393956] WARN_ON(
[ 1748.393959] Modules linked in:
[ 1748.393963] cfg80211 toshiba_acpi toshiba_haps hp_accel lis3lv02d input_polldev rtsx_usb_ms memstick dell_wmi sparse_keymap uvcvideo intel_rapl iosf_mbi videobuf2_vmalloc x86_pkg_
[ 1748.394035] drm snd mei video i2c_algo_bit dw_dmac spi_pxa2xx_platform dw_dmac_core i2c_designware_
[ 1748.394076] CPU: 0 PID: 843 Comm: Xorg Tainted: G W OE 3.19.0-20-generic #20+bpo1-Ubuntu
[ 1748.394079] Hardware name: Dell Inc. Vostro 3458/ , BIOS X13 01/07/2015
[ 1748.394082] ffffffffc051aef8 ffff88040dc879b8 ffffffff817c3da8 0000000000000007
[ 1748.394089] ffff88040dc87a08 ffff88040dc879f8 ffffffff810769aa ffff88040dc87a18
[ 1748.394094] ffff8804190411a8 ffff88041a3b84c8 ffff8804193e2000 ffff880419041000
[ 1748.394100] Call Trace:
[ 1748.394115] [<ffffffff817c3
[ 1748.394123] [<ffffffff81076
[ 1748.394128] [<ffffffff81076
[ 1748.394138] [<ffffffff810b7
[ 1748.394183] [<ffffffffc04bd
[ 1748.394189] [<ffffffff810b7
[ 1748.394230] [<ffffffffc04bf
[ 1748.394269] [<ffffffffc04c0
[ 1748.394308] [<ffffffffc04c1
[ 1748.394317] [<ffffffff811d7
[ 1748.394358] [<ffffffffc04c7
[ 1748.394398] [<ffffffffc04c7
[ 1748.394436] [<ffffffffc04c8
[ 1748.394473] [<ffffffffc026e
[ 1748.394506] [<ffffffffc0273
[ 1748.394529] [<ffffffffc0263
[ 1748.394541] [<ffffffff81209
[ 1748.394547] [<ffffffff811f7
[ 1748.394554] [<ffffffff811f4
[ 1748.394560] [<ffffffff81209
[ 1748.394566] [<ffffffff817ca
[ 1748.394570] ---[ end trace 7614d6cd5f75c668 ]---