[Bug 96214] [BAT SKL] WARN Unclaimed register detected (0x65f10) / gem_exec_suspend at basic-s4

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96214

--- Comment #8 from Hans de Goede <jwrdegoede at fedoraproject.org> ---
(In reply to Chris Wilson from comment #7)
> Should be fixed by https://patchwork.freedesktop.org/patch/97995/

Thank you for working on this, I'm hitting this too on my skylake Dell XPS 15,
I've just tried a 4.6.4 kernel with the patch applied and I'm afraid it does
NOT solve the issue I'm still getting this WARN_ON:

[   32.343706] ------------[ cut here ]------------
[   32.343733] WARNING: CPU: 7 PID: 1605 at
drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x7b/0x90 [i915]
[   32.343735] Unclaimed register detected after reading register 0x65f10
[   32.343735] Modules linked in: fuse xt_CHECKSUM iptable_mangle
ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge stp llc
ebtable_filter ebtables ip6table_filter ip6_tables cpufreq_stats bnep vfat fat
hid_multitouch snd_hda_codec_hdmi dell_led snd_hda_codec_realtek mei_wdt
brcmfmac i2c_designware_platform snd_hda_codec_generic i2c_designware_core
dell_wmi brcmutil cfg80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel
dell_laptop snd_hda_intel snd_hda_codec uvcvideo kvm dell_smbios dcdbas
rtsx_pci_ms snd_hda_core snd_hwdep snd_seq memstick snd_seq_device snd_pcm
irqbypass videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_timer
videobuf2_core joydev snd videodev i2c_i801 soundcore idma64 hci_uart btusb
[   32.343763]  mei_me btrtl btqca btbcm media mei btintel intel_lpss_pci
shpchp processor_thermal_device int3403_thermal intel_soc_dts_iosf bluetooth
dell_smo8800 pinctrl_sunrisepoint rfkill intel_lpss_acpi pinctrl_intel
intel_lpss int3402_thermal int340x_thermal_zone intel_hid int3400_thermal
acpi_als acpi_thermal_rel kfifo_buf industrialio tpm_tis sparse_keymap tpm
acpi_pad binfmt_misc nouveau i915 rtsx_pci_sdmmc mmc_core crct10dif_pclmul
crc32_pclmul mxm_wmi crc32c_intel i2c_algo_bit drm_kms_helper
ghash_clmulni_intel ttm drm serio_raw nvme rtsx_pci nvme_core i2c_hid wmi video
fjes sunrpc scsi_transport_iscsi
[   32.343785] CPU: 7 PID: 1605 Comm: pulseaudio Not tainted
4.6.4-301.bko120451.fc24.x86_64 #1
[   32.343786] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00
04/07/2016
[   32.343787]  0000000000000086 000000000e3ed293 ffff88049813b788
ffffffff813dbcaf
[   32.343789]  ffff88049813b7d8 0000000000000000 ffff88049813b7c8
ffffffff810a742b
[   32.343791]  000002890e3ed293 0000000000000000 0000000000000001
0000000000065f10
[   32.343793] Call Trace:
[   32.343796]  [<ffffffff813dbcaf>] dump_stack+0x63/0x84
[   32.343799]  [<ffffffff810a742b>] __warn+0xcb/0xf0
[   32.343801]  [<ffffffff810a74af>] warn_slowpath_fmt+0x5f/0x80
[   32.343804]  [<ffffffff8169d838>] ? pci_conf1_write+0xb8/0xf0
[   32.343819]  [<ffffffffc0246a5b>] __unclaimed_reg_debug+0x7b/0x90 [i915]
[   32.343834]  [<ffffffffc024c4ab>] gen9_read32+0x35b/0x390 [i915]
[   32.343837]  [<ffffffff81529f6b>] ? __pm_runtime_resume+0x5b/0x70
[   32.343852]  [<ffffffffc0252ad1>]
i915_audio_component_codec_wake_override+0x41/0xc0 [i915]
[   32.343857]  [<ffffffffc066ec4f>] snd_hdac_set_codec_wakeup+0x3f/0xa0
[snd_hda_core]
[   32.343860]  [<ffffffffc07eaa8f>] azx_runtime_resume+0x17f/0x190
[snd_hda_intel]
[   32.343862]  [<ffffffff8142a1cb>] pci_pm_runtime_resume+0x7b/0xa0
[   32.343863]  [<ffffffff8142a150>] ? pci_restore_standard_config+0x40/0x40
[   32.343865]  [<ffffffff81528517>] __rpm_callback+0x27/0x70
[   32.343867]  [<ffffffff8142a150>] ? pci_restore_standard_config+0x40/0x40
[   32.343869]  [<ffffffff81528584>] rpm_callback+0x24/0x80
[   32.343870]  [<ffffffff8142a150>] ? pci_restore_standard_config+0x40/0x40
[   32.343872]  [<ffffffff81528f04>] rpm_resume+0x494/0x6a0
[   32.343874]  [<ffffffff812222a5>] ? ___slab_alloc+0x295/0x520
[   32.343875]  [<ffffffff81528d46>] rpm_resume+0x2d6/0x6a0
[   32.343877]  [<ffffffff81223295>] ? __kmalloc+0x1e5/0x220
[   32.343879]  [<ffffffff81529f5e>] __pm_runtime_resume+0x4e/0x70
[   32.343882]  [<ffffffffc0668e93>] snd_hdac_power_up+0x13/0x20 [snd_hda_core]
[   32.343887]  [<ffffffffc06f59dc>] azx_pcm_open+0x1dc/0x3c0 [snd_hda_codec]
[   32.343892]  [<ffffffffc05ed47b>] snd_pcm_open_substream+0x7b/0x130
[snd_pcm]
[   32.343895]  [<ffffffffc05ed5e7>] snd_pcm_open+0xb7/0x250 [snd_pcm]
[   32.343897]  [<ffffffff81222832>] ? kmem_cache_alloc_trace+0x182/0x1d0
[   32.343900]  [<ffffffffc050d8ca>] ? snd_card_file_add+0x2a/0xd0 [snd]
[   32.343902]  [<ffffffff810d2070>] ? wake_up_q+0x70/0x70
[   32.343905]  [<ffffffffc05ed7c7>] snd_pcm_capture_open+0x47/0x70 [snd_pcm]
[   32.343908]  [<ffffffffc050d461>] snd_open+0xb1/0x180 [snd]
[   32.343910]  [<ffffffff8124de30>] chrdev_open+0xb0/0x180
[   32.343911]  [<ffffffff812466f1>] do_dentry_open+0x201/0x2e0
[   32.343913]  [<ffffffff8124dd80>] ? cdev_put+0x30/0x30
[   32.343914]  [<ffffffff81247ae4>] vfs_open+0x54/0x80
[   32.343916]  [<ffffffff81254fec>] ? may_open+0x8c/0x100
[   32.343918]  [<ffffffff81257d81>] path_openat+0x1d1/0x15b0
[   32.343920]  [<ffffffff8125a391>] do_filp_open+0x91/0x100
[   32.343922]  [<ffffffff8126771f>] ? __alloc_fd+0x3f/0x170
[   32.343924]  [<ffffffff81247ea0>] do_sys_open+0x130/0x220
[   32.343925]  [<ffffffff81247fae>] SyS_open+0x1e/0x20
[   32.343927]  [<ffffffff817e0772>] entry_SYSCALL_64_fastpath+0x1a/0xa4
[   32.343929] ---[ end trace 66ff1059d057cdec ]---

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