[Bug 98214] New: drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98214

            Bug ID: 98214
           Summary: drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk <
                    crtc_clock)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: pebolle at tiscali.nl
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Reported at http://lkml.kernel.org/r/<1476266167.7439.8.camel@tiscali.nl> :

On a laptop that runs v4.8.y I see this WARNING:
    WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)

I never saw that WARNING in v4.7 and earlier. Since v4.8 I've had it in all
boots.

Full trace:
WARNING: CPU: 3 PID: 1368 at drivers/gpu/drm/i915/intel_display.c:14178
skl_max_scale.part.120+0x75/0x80 [i915]
WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)
Modules linked in:
 rfcomm fuse nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat
ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 cmac
nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
iptable_mangle iptable_raw iptable_security ebtable_filter ebtables
ip6table_filter ip6_tables bnep vfat fat arc4 snd_hda_codec_hdmi snd_soc_skl
dell_led snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core
snd_soc_sst_match snd_soc_core intel_rapl snd_hda_codec_realtek
snd_hda_codec_generic x86_pkg_temp_thermal coretemp kvm_intel snd_compress
snd_pcm_dmaengine ac97_bus kvm snd_hda_intel iwlmvm snd_hda_codec mac80211
iTCO_wdt
 iTCO_vendor_support uvcvideo snd_hda_core snd_hwdep snd_seq irqbypass
dell_laptop i2c_designware_platform i2c_designware_core dell_wmi
crct10dif_pclmul dell_smbios dcdbas crc32_pclmul snd_seq_device iwlwifi
videobuf2_vmalloc videobuf2_memops ghash_clmulni_intel snd_pcm videobuf2_v4l2
videobuf2_core cfg80211 videodev media joydev pcspkr mei_me rtsx_pci_ms
memstick snd_timer i2c_i801 i2c_smbus mei snd btusb soundcore shpchp hci_uart
btrtl btbcm btqca idma64 btintel bluetooth intel_pch_thermal
processor_thermal_device intel_lpss_pci intel_soc_dts_iosf wmi
pinctrl_sunrisepoint intel_lpss_acpi rfkill pinctrl_intel intel_lpss
int3400_thermal acpi_als int3403_thermal int340x_thermal_zone kfifo_buf
acpi_thermal_rel intel_hid industrialio sparse_keymap acpi_pad tpm_tis
tpm_tis_core tpm nfsd auth_rpcgss
 nfs_acl lockd grace sunrpc hid_multitouch i915 rtsx_pci_sdmmc mmc_core
i2c_algo_bit drm_kms_helper crc32c_intel drm serio_raw nvme rtsx_pci nvme_core
i2c_hid video fjes
CPU: 3 PID: 1368 Comm: Xorg Not tainted 4.8.1-1.local1.fc24.x86_64 #1
Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.4.4 06/14/2016
 0000000000000286 00000000df2f374c ffffa31528d53910 ffffffffb83e5cfd
 ffffa31528d53960 0000000000000000 ffffa31528d53950 ffffffffb80a7d5b
 00003762c72b3010 ffffa3151e4d8cc0 ffffa31526c23800 ffffa31526e60000
Call Trace:
 [<ffffffffb83e5cfd>] dump_stack+0x63/0x86
 [<ffffffffb80a7d5b>] __warn+0xcb/0xf0
 [<ffffffffb80a7ddf>] warn_slowpath_fmt+0x5f/0x80
 [<ffffffffb83f5247>] ? sort+0x147/0x220
 [<ffffffffc0132754>] ? drm_atomic_helper_normalize_zpos+0x264/0x300
[drm_kms_helper]
 [<ffffffffc01f20e5>] skl_max_scale.part.120+0x75/0x80 [i915]
 [<ffffffffc01f21b6>] intel_check_primary_plane+0xc6/0xe0 [i915]
 [<ffffffffc0132754>] ? drm_atomic_helper_normalize_zpos+0x264/0x300
[drm_kms_helper]
 [<ffffffffc01e33d2>] intel_plane_atomic_check+0x132/0x1f0 [i915]
 [<ffffffffc012f524>] drm_atomic_helper_check_planes+0x84/0x200
[drm_kms_helper]
 [<ffffffffc01fdd07>] intel_atomic_check+0x9a7/0x11a0 [i915]
 [<ffffffffb822c84a>] ? __kmalloc_track_caller+0x17a/0x210
 [<ffffffffc00bbf07>] drm_atomic_check_only+0x187/0x610 [drm]
 [<ffffffffc00bb6c8>] ? drm_atomic_get_crtc_state+0x88/0x100 [drm]
 [<ffffffffc00bc3a7>] drm_atomic_commit+0x17/0x60 [drm]
 [<ffffffffc012e90c>] drm_atomic_helper_update_plane+0xec/0x130
[drm_kms_helper]
 [<ffffffffc00ab16b>] __setplane_internal+0x22b/0x270 [drm]
 [<ffffffffc00ab2e9>] drm_mode_cursor_universal+0x139/0x240 [drm]
 [<ffffffffc00ab46e>] drm_mode_cursor_common+0x7e/0x180 [drm]
 [<ffffffffc00af9de>] drm_mode_cursor2_ioctl+0xe/0x10 [drm]
 [<ffffffffc00a1f0a>] drm_ioctl+0x1da/0x4b0 [drm]
 [<ffffffffc00af9d0>] ? drm_mode_cursor_ioctl+0x70/0x70 [drm]
 [<ffffffffb81161bd>] ? enqueue_hrtimer+0x3d/0x80
 [<ffffffffb8266693>] do_vfs_ioctl+0xa3/0x5e0
 [<ffffffffb86bc151>] ? __sys_recvmsg+0x51/0x90
 [<ffffffffb8266c49>] SyS_ioctl+0x79/0x90
 [<ffffffffb87fc4f2>] entry_SYSCALL_64_fastpath+0x1a/0xa4

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161012/7a48bcb1/attachment.html>