kernel-packages team mailing list archive

[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

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]()
[ 1748.393956] WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue, !intel_crtc_has_pending_flip(crtc), 60*HZ) == 0)
[ 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_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
[ 1748.394035]  drm snd mei video i2c_algo_bit dw_dmac spi_pxa2xx_platform dw_dmac_core i2c_designware_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
[ 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]  [<ffffffff817c3da8>] dump_stack+0x45/0x57
[ 1748.394123]  [<ffffffff810769aa>] warn_slowpath_common+0x8a/0xc0
[ 1748.394128]  [<ffffffff81076a26>] warn_slowpath_fmt+0x46/0x50
[ 1748.394138]  [<ffffffff810b7319>] ? finish_wait+0x59/0x70
[ 1748.394183]  [<ffffffffc04bd9ca>] intel_crtc_wait_for_pending_flips+0x19a/0x230 [i915]
[ 1748.394189]  [<ffffffff810b7510>] ? wait_woken+0x90/0x90
[ 1748.394230]  [<ffffffffc04bfba3>] intel_crtc_disable_planes+0x33/0x140 [i915]
[ 1748.394269]  [<ffffffffc04c091f>] haswell_crtc_disable+0x4f/0x3c0 [i915]
[ 1748.394308]  [<ffffffffc04c178c>] __intel_set_mode+0x92c/0xc80 [i915]
[ 1748.394317]  [<ffffffff811d7b5e>] ? __kmalloc+0x24e/0x280
[ 1748.394358]  [<ffffffffc04c7918>] ? intel_crtc_set_config+0x88/0xf70 [i915]
[ 1748.394398]  [<ffffffffc04c7999>] ? intel_crtc_set_config+0x109/0xf70 [i915]
[ 1748.394436]  [<ffffffffc04c848b>] intel_crtc_set_config+0xbfb/0xf70 [i915]
[ 1748.394473]  [<ffffffffc026eb16>] drm_mode_set_config_internal+0x66/0x100 [drm]
[ 1748.394506]  [<ffffffffc02731c3>] drm_mode_setcrtc+0x253/0x5a0 [drm]
[ 1748.394529]  [<ffffffffc0263a6f>] drm_ioctl+0x1df/0x680 [drm]
[ 1748.394541]  [<ffffffff81209230>] do_vfs_ioctl+0x2e0/0x4e0
[ 1748.394547]  [<ffffffff811f7165>] ? __sb_end_write+0x35/0x70
[ 1748.394554]  [<ffffffff811f4bd2>] ? vfs_write+0x1b2/0x1f0
[ 1748.394560]  [<ffffffff812094b1>] SyS_ioctl+0x81/0xa0
[ 1748.394566]  [<ffffffff817caecd>] system_call_fastpath+0x16/0x1b
[ 1748.394570] ---[ end trace 7614d6cd5f75c668 ]---

** Attachment added: "dmesg.zip"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1460674/+attachment/4414964/+files/dmesg.zip

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https://bugs.launchpad.net/bugs/1460674

Title:
  [i915_bpo] Rebase driver to 4.2~pre

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Vivid:
  In Progress

Bug description:
  Upstream i915 code has been feature-frozen for drm-next, and rebasing
  i915_bpo to it is fairly simple. We need all the drm_atomic* changes
  to date though, in order to avoid oopses loading the driver.
  Thankfully i915_bpo is the only driver that uses them (besides msm),
  so there's no chance of regressing other drivers that we care about.

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