Bug 82892

Summary: [HSW/BYT/BDW]igt/kms_setmode/clone-exclusive-crtc causes "WARNING: CPU: 3 PID: 20000 at drivers/gpu/drm/i915/intel_ddi.c:1531 intel_ddi_compute_config+0x39/0x6c [i915]()"
Product: DRI Reporter: Guo Jinxian <jinxianx.guo>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED DUPLICATE QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs, przanoni
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg none

Description Guo Jinxian 2014-08-21 06:16:07 UTC 
Created attachment 105004 [details]
dmesg

==System Environment==
--------------------------
Regression: Not sure.
I didn't find good commit on both kernel and i-g-t.

Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: 49ceddc7b3b0e3f7eb21b9fb4c9b840cff630047(fails)
    drm-intel-nightly: 2014y-08m-19d-19h-02m-49s integration manifest
origin/drm-intel-next-queued: 3f72c7b12f1a81a32fd37216b3382e6fe46a7184(fails)
    drm/i915/bdw: Disable execlists by default
origin/drm-intel-fixes: 1a125d8a2c22b11741fc47d4ffcf7a5ffa044dd3(fails)
    drm/i915: don't try to retrain a DP link on an inactive CRTC

==Bug detailed description==
-----------------------------
igt/kms_setmode/clone-exclusive-crtc causes "WARNING: CPU: 3 PID: 20000 at drivers/gpu/drm/i915/intel_ddi.c:1531 intel_ddi_compute_config+0x39/0x6c [i915]()"

Output:
[root@x-hsw24 tests]# ./kms_setmode --run-subtest clone-exclusive-crtc
IGT-Version: 1.7-g4d2f511 (x86_64) (Linux: 3.17.0-rc1_drm-intel-nightly_49cedd_20140821+ x86_64)
Testing: clone-exclusive-crtc 2 connector combinations
  Test id#1 CRTC count 2
    CRTC[7] [Pipe A] Mode: 640x480@60Hz Connectors: VGA-1[18] (NC)
    CRTC[12] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[27] (NC)
Test assertion failure function test_crtc_config, file kms_setmode.c:433:
Failed assertion: config_failed == !!(tconf->flags & TEST_INVALID)
Last errno: 22, Invalid argument
Subtest clone-exclusive-crtc: FAIL
[root@x-hsw24 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<4>[  143.879861] WARNING: CPU: 3 PID: 20000 at drivers/gpu/drm/i915/intel_ddi.c:1531 intel_ddi_compute_config+0x39/0x6c [i915]()
<4>[  143.879863] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support dcdbas serio_raw pcspkr i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec lpc_ich snd_hwdep mfd_core shpchp snd_pcm snd_timer snd soundcore battery acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  143.879876] CPU: 3 PID: 20000 Comm: kms_setmode Not tainted 3.17.0-rc1_drm-intel-nightly_49cedd_20140821+ #1652
<4>[  143.879934]  [<ffffffffa00181c9>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  143.879938]  [<ffffffffa001bbe4>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  143.879942]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  143.879948]  [<ffffffffa001b7fe>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  143.879952]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]
<4>[  143.879969] WARNING: CPU: 3 PID: 20000 at drivers/gpu/drm/i915/intel_dp.c:137 intel_dp_max_link_bw+0x6f/0x77 [i915]()
<4>[  143.879971] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support dcdbas serio_raw pcspkr i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec lpc_ich snd_hwdep mfd_core shpchp snd_pcm snd_timer snd soundcore battery acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  143.879981] CPU: 3 PID: 20000 Comm: kms_setmode Tainted: G        W      3.17.0-rc1_drm-intel-nightly_49cedd_20140821+ #1652
<4>[  143.880040]  [<ffffffffa00181c9>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  143.880044]  [<ffffffffa001bbe4>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  143.880047]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  143.880053]  [<ffffffffa001b7fe>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  143.880056]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]


==Reproduce steps==
---------------------------- 
1. ./kms_setmode --run-subtest clone-exclusive-crtc
Comment 1 Guo Jinxian 2014-08-27 08:00:31 UTC 
The failure is able to reproduce on latest -nightly(c30b73ce7c138b5fd671ed3a7e1301bd273fd661) on BDW

[root@x-bdw02 tests]#./kms_setmode --run-subtest clone-exclusive-crtc
IGT-Version: 1.7-g50166d2 (x86_64) (Linux: 3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ x86_64)
Testing: clone-exclusive-crtc 2 connector combinations
  Test id#1 CRTC count 2
    CRTC[8] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[19]
    CRTC[12] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[31] (NC)
Test assertion failure function test_crtc_config, file kms_setmode.c:431:
Failed assertion: config_failed == !!(tconf->flags & TEST_INVALID)
Last errno: 22, Invalid argument
Subtest clone-exclusive-crtc: FAIL

[root@x-bdw02 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<4>[  404.565077] WARNING: CPU: 0 PID: 7228 at drivers/gpu/drm/i915/intel_ddi.c:1531 intel_ddi_compute_config+0x39/0x6c [i915]()
<4>[  404.565081] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  404.565106] CPU: 0 PID: 7228 Comm: kms_setmode Tainted: G        W      3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ #1868
<4>[  404.565242]  [<ffffffffa0018149>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  404.565253]  [<ffffffffa001bb64>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  404.565262]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  404.565277]  [<ffffffffa001b77e>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  404.565286]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]
<4>[  404.565325] WARNING: CPU: 0 PID: 7228 at drivers/gpu/drm/i915/intel_dp.c:137 intel_dp_max_link_bw+0x6f/0x77 [i915]()
<4>[  404.565329] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  404.565351] CPU: 0 PID: 7228 Comm: kms_setmode Tainted: G        W      3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ #1868
<4>[  404.565499]  [<ffffffffa0018149>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  404.565509]  [<ffffffffa001bb64>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  404.565519]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  404.565533]  [<ffffffffa001b77e>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  404.565542]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]



[root@x-bdw02 tests]#./kms_setmode --run-subtest clone-single-crtc
IGT-Version: 1.7-g50166d2 (x86_64) (Linux: 3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ x86_64)
Testing: clone-single-crtc 2 connector combinations
Testing: clone-single-crtc 3 connector combinations
Subtest clone-single-crtc: SUCCESS

[root@x-bdw02 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<4>[  404.565077] WARNING: CPU: 0 PID: 7228 at drivers/gpu/drm/i915/intel_ddi.c:1531 intel_ddi_compute_config+0x39/0x6c [i915]()
<4>[  404.565081] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  404.565106] CPU: 0 PID: 7228 Comm: kms_setmode Tainted: G        W      3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ #1868
<4>[  404.565242]  [<ffffffffa0018149>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  404.565253]  [<ffffffffa001bb64>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  404.565262]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  404.565277]  [<ffffffffa001b77e>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  404.565286]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]
<4>[  404.565325] WARNING: CPU: 0 PID: 7228 at drivers/gpu/drm/i915/intel_dp.c:137 intel_dp_max_link_bw+0x6f/0x77 [i915]()
<4>[  404.565329] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  404.565351] CPU: 0 PID: 7228 Comm: kms_setmode Tainted: G        W      3.17.0-rc2_drm-intel-nightly_c30b73_20140827+ #1868
<4>[  404.565499]  [<ffffffffa0018149>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  404.565509]  [<ffffffffa001bb64>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  404.565519]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  404.565533]  [<ffffffffa001b77e>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  404.565542]  [<ffffffffa000fda3>] ? drm_gem_vm_close+0x2a/0x4b [drm]
Comment 2 Guo Jinxian 2014-09-11 06:19:51 UTC 
This bug still able to reproduce on latest -nightly(72faa6a63351879b381bd9e4013f38bc94f11999) on BDW

root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_setmode --run-subtest clone-exclusive-crtc
IGT-Version: 1.8-g107151c (x86_64) (Linux: 3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
Testing: clone-exclusive-crtc 2 connector combinations
  Test id#1 CRTC count 2
    CRTC[8] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[19]
    CRTC[12] [Pipe B] Mode: 640x480@60Hz Connectors: HDMI-A-1[32] (NC)
Test assertion failure function test_crtc_config, file kms_setmode.c:431:
Failed assertion: config_failed == !!(tconf->flags & TEST_INVALID)
Last errno: 22, Invalid argument
Subtest clone-exclusive-crtc: FAIL (0.091s)
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep "<[1-4]>"|grep drm
<4>[   67.166670] WARNING: CPU: 0 PID: 4606 at drivers/gpu/drm/i915/intel_ddi.c:1530 intel_ddi_compute_config+0x39/0x6c [i915]()
<4>[   67.166672] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_timer mfd_core snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[   67.166689] CPU: 0 PID: 4606 Comm: kms_setmode Not tainted 3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ #2340
<4>[   67.166777]  [<ffffffffa0017fad>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[   67.166784]  [<ffffffffa001b9a9>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[   67.166791]  [<ffffffffa001063c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[   67.166800]  [<ffffffffa001b5c3>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[   67.166806]  [<ffffffffa000fad7>] ? drm_gem_vm_close+0x2a/0x4b [drm]
<4>[   67.166829] WARNING: CPU: 0 PID: 4606 at drivers/gpu/drm/i915/intel_dp.c:137 intel_dp_max_link_bw+0x6e/0x75 [i915]()
<4>[   67.166831] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_timer mfd_core snd soundcore battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[   67.166845] CPU: 0 PID: 4606 Comm: kms_setmode Tainted: G        W      3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ #2340
<4>[   67.166933]  [<ffffffffa0017fad>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[   67.166940]  [<ffffffffa001b9a9>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[   67.166946]  [<ffffffffa001063c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[   67.166954]  [<ffffffffa001b5c3>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[   67.166959]  [<ffffffffa000fad7>] ? drm_gem_vm_close+0x2a/0x4b [drm]
Comment 3 Paulo Zanoni 2014-10-27 16:37:12 UTC 

*** This bug has been marked as a duplicate of bug 68463 ***
Comment 4 Guo Jinxian 2014-11-17 08:21:52 UTC 
The test will causes system hung on latest nightly(e49ebf9ed863e9522260ebd7bd0338ef5641c0e6) on BDW and BYT


root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time ./kms_setmode --run-subtest invalid-clone-single-crtc
IGT-Version: 1.8-gaa63fc7 (x86_64) (Linux: 3.18.0-rc4_drm-intel-nightly_e49ebf_20141117+ x86_64)
Testing: invalid-clone-single-crtc 2 connector combinations
  Test id#1 CRTC count 1
    CRTC[8] [Pipe A] Mode: 1920x1080@60Hz Connectors: eDP-1[19], DP-1[28]
Test assertion failure function test_crtc_config, file kms_setmode.c:431:
Failed assertion: config_failed == !!(tconf->flags & TEST_INVALID)
Last errno: 2, No such file or directory
Subtest invalid-clone-single-crtc: FAIL (1.163s)

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