[Bug 94567] connecting HDMI crashes kernel i915 (Dell XPS13 9350) Skylake, unable to get HDMI output with resolutions higher than 1440x900

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94567

--- Comment #9 from Daniel <kdebugs at staznosti.sk> ---
[  188.569962] ------------[ cut here ]------------
[  188.569985] WARNING: CPU: 2 PID: 1054 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3647
skl_update_other_pipe_wm+0x16c/0x180 [i915]
[  188.569987] WARN_ON(!wm_changed)
[  188.569988] Modules linked in:
[  188.569989]  rfcomm binfmt_misc bnep snd_hda_codec_hdmi
i2c_designware_platform i2c_designware_core snd_soc_skl dell_led
snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp dell_wmi dell_laptop
snd_hda_ext_core dell_smbios dcdbas snd_soc_sst_match snd_hda_codec_realtek
snd_hda_codec_generic nls_iso8859_1 snd_soc_core snd_compress ac97_bus
snd_pcm_dmaengine dw_dmac_core snd_hda_intel snd_hda_codec snd_hda_core
snd_hwdep brcmfmac intel_rapl x86_pkg_temp_thermal intel_powerclamp brcmutil
coretemp snd_pcm kvm_intel cdc_ether usbnet kvm r8152 mii irqbypass
crct10dif_pclmul cfg80211 crc32_pclmul ghash_clmulni_intel rtsx_pci_ms
aesni_intel memstick aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd
snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device input_leds
snd_timer joydev snd serio_raw
[  188.570022]  soundcore uvcvideo videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 hid_multitouch videobuf2_core btusb shpchp videodev btrtl media
idma64 mei_me virt_dma processor_thermal_device mei intel_soc_dts_iosf
intel_lpss_pci intel_pch_thermal hci_uart btbcm btqca btintel bluetooth
acpi_als intel_lpss_acpi intel_lpss int3400_thermal kfifo_buf intel_hid
acpi_thermal_rel int3403_thermal int340x_thermal_zone sparse_keymap acpi_pad
industrialio mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid
rtsx_pci_sdmmc i915 psmouse i2c_algo_bit drm_kms_helper syscopyarea sysfillrect
sysimgblt nvme fb_sys_fops nvme_core rtsx_pci ahci drm libahci wmi i2c_hid hid
pinctrl_sunrisepoint video pinctrl_intel fjes
[  188.570055] CPU: 2 PID: 1054 Comm: Xorg Tainted: G     U  W      
4.6.0-997-generic #201604121131
[  188.570057] Hardware name: Dell Inc. XPS 13 9350/0VM5NC, BIOS 1.2.3
01/08/2016
[  188.570058]  0000000000000286 0000000022b70ec0 ffff88046bacf900
ffffffff813eef23
[  188.570061]  ffff88046bacf950 0000000000000000 ffff88046bacf940
ffffffff810827cb
[  188.570063]  00000e3f00000000 ffff880467dee000 ffff88046704a118
ffff880467ded000
[  188.570065] Call Trace:
[  188.570071]  [<ffffffff813eef23>] dump_stack+0x63/0x90
[  188.570074]  [<ffffffff810827cb>] __warn+0xcb/0xf0
[  188.570076]  [<ffffffff8108284f>] warn_slowpath_fmt+0x5f/0x80
[  188.570092]  [<ffffffffc01c3a3c>] skl_update_other_pipe_wm+0x16c/0x180
[i915]
[  188.570106]  [<ffffffffc01c3bd5>] skl_update_wm+0x185/0x670 [i915]
[  188.570128]  [<ffffffffc0252def>] ?
intel_ddi_enable_transcoder_func+0x17f/0x260 [i915]
[  188.570142]  [<ffffffffc01c79ce>] intel_update_watermarks+0x1e/0x30 [i915]
[  188.570162]  [<ffffffffc0235bd1>] haswell_crtc_enable+0x761/0x8e0 [i915]
[  188.570182]  [<ffffffffc0231ab7>] intel_atomic_commit+0x5e7/0x14a0 [i915]
[  188.570201]  [<ffffffffc0234063>] ? intel_atomic_check+0x2a3/0x810 [i915]
[  188.570219]  [<ffffffffc00bac21>] ? drm_atomic_check_only+0x181/0x600 [drm]
[  188.570231]  [<ffffffffc00bb0d7>] drm_atomic_commit+0x37/0x60 [drm]
[  188.570239]  [<ffffffffc015bf2a>] drm_atomic_helper_set_config+0x7a/0xb0
[drm_kms_helper]
[  188.570252]  [<ffffffffc00aab42>] drm_mode_set_config_internal+0x62/0x100
[drm]
[  188.570263]  [<ffffffffc00aea90>] drm_mode_setcrtc+0x3e0/0x500 [drm]
[  188.570272]  [<ffffffffc009fab2>] drm_ioctl+0x152/0x540 [drm]
[  188.570283]  [<ffffffffc00ae6b0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
[  188.570286]  [<ffffffff81233911>] do_vfs_ioctl+0xa1/0x5b0
[  188.570289]  [<ffffffff810906f1>] ? __set_task_blocked+0x41/0xa0
[  188.570291]  [<ffffffff81093076>] ? __set_current_blocked+0x36/0x60
[  188.570293]  [<ffffffff81233e99>] SyS_ioctl+0x79/0x90
[  188.570296]  [<ffffffff8109333e>] ? SyS_rt_sigprocmask+0x8e/0xc0
[  188.570298]  [<ffffffff8183f936>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[  188.570314] ---[ end trace aff0a66820c08a30 ]---

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