Comment 23 for bug 1542939

(In reply to Tomas Janousek from comment #3)
> "drm/i915: Calculate
> watermark related members in the crtc_state, v4." is pretty old and was in
> the queue already when I researched this, [...]

I think I'm hit with the same bug. Is there any way to find out which kernel releases have it. Specifically, has it been back-ported to the 4.1 line?

To verify that I am hit with this bug, my trace:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1011 at drivers/gpu/drm/drm_irq.c:1141 drm_wait_one_vblank+0x9d/0x170 [drm]()
vblank wait timed out on crtc 0
Modules linked in: ctr ccm af_packet uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev hid_logitech_hidpp hid_logitech_dj btrfs xor zlib_deflate snd_hda_codec_hdmi snd_hda_codec_generic raid6_pq zlib_inflate arc4 i915 coretemp x86_pkg_temp_thermal intel_powerclamp fbcon bitblit softcursor font aesni_intel cfbfillrect cfbimgblt i2c_algo_bit cfbcopyarea aes_x86_64 glue_helper drm_kms_helper iwldvm lrw gf128mul mac80211 drm sdhci_pci ablk_helper cryptd sdhci microcode psmouse mmc_core snd_hda_intel snd_hda_controller i2c_i801 xhci_pci iwlwifi xhci_hcd snd_hda_codec i2c_core snd_hwdep fb snd_hda_core cfg80211 wmi thinkpad_acpi fbdev e1000e intel_gtt snd_pcm agpgart snd_timer nvram ptp snd pps_core soundcore ehci_pci hwmon ehci_hcd rfkill evdev video ipv6
CPU: 0 PID: 1011 Comm: X Not tainted 4.1.15-gentoo-r1 #3
Hardware name: LENOVO 4290W4H/4290W4H, BIOS 8DET70WW (1.40 ) 05/14/2015
 0000000000000000 ffffffffa039fd90 ffffffff8143e0e9 ffff88020f843888
 ffffffff8104739c 0000000000000000 ffff8800d857a000 0000000000000000
 0000000000000000 00000000000024ef ffffffff81047415 ffffffffa03a1518
Call Trace:
 [<ffffffff8143e0e9>] ? dump_stack+0x40/0x50
 [<ffffffff8104739c>] ? warn_slowpath_common+0x7c/0xb0
 [<ffffffff81047415>] ? warn_slowpath_fmt+0x45/0x50
 [<ffffffff8107c32e>] ? prepare_to_wait_event+0x7e/0xf0
 [<ffffffffa037660d>] ? drm_wait_one_vblank+0x9d/0x170 [drm]
 [<ffffffff8107c220>] ? wait_woken+0x80/0x80
 [<ffffffffa04b35f0>] ? drm_plane_helper_commit+0x250/0x2c0 [drm_kms_helper]
 [<ffffffffa0692587>] ? intel_crtc_set_config+0x817/0xf60 [i915]
 [<ffffffffa038d91a>] ? drm_atomic_state_clear+0x10a/0x180 [drm]
 [<ffffffffa037ed0f>] ? drm_mode_set_config_internal+0x5f/0x100 [drm]
 [<ffffffffa04bb6c9>] ? restore_fbdev_mode+0xb9/0xe0 [drm_kms_helper]
 [<ffffffffa04bd4eb>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1b/0x60 [drm_kms_helper]
 [<ffffffffa04bd54d>] ? drm_fb_helper_set_par+0x1d/0x40 [drm_kms_helper]
 [<ffffffffa06a0901>] ? intel_fbdev_set_par+0x11/0x60 [i915]
 [<ffffffff8114c935>] ? do_sys_poll+0x105/0x530
 [<ffffffffa023f80c>] ? fb_set_var+0x16c/0x3a0 [fb]
 [<ffffffffa05d7355>] ? fbcon_blank+0x225/0x2e0 [fbcon]
 [<ffffffff812951b2>] ? do_unblank_screen+0xb2/0x1e0
 [<ffffffff8128b86f>] ? complete_change_console+0x4f/0xd0
 [<ffffffff8128c9ae>] ? vt_ioctl+0x10be/0x1340
 [<ffffffffa037450c>] ? drm_ioctl+0x18c/0x580 [drm]
 [<ffffffff8113a008>] ? __sb_end_write+0x28/0x60
 [<ffffffff8128066e>] ? tty_ioctl+0x3ce/0xc00
 [<ffffffff8114ac98>] ? do_vfs_ioctl+0x2e8/0x4f0
 [<ffffffff8113a008>] ? __sb_end_write+0x28/0x60
 [<ffffffff81137fa3>] ? vfs_write+0x183/0x1b0
 [<ffffffff8114aed6>] ? SyS_ioctl+0x36/0x80
 [<ffffffff81443097>] ? system_call_fastpath+0x12/0x6a
---[ end trace 0dabb2916250fc62 ]---