| Summary: | [BYT Bisected]igt/kms_flip subcases cause "WARNING: CPU: 0 PID: 3943 at drivers/gpu/drm/i915/intel_dp.c:3092 intel_dp_complete_link_train+0x100/0x27f [i915]()" sporadically | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Guo Jinxian <jinxianx.guo> | ||||
| Component: | DRM/Intel | Assignee: | Imre Deak <imre.deak> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | normal | ||||||
| Priority: | highest | CC: | intel-gfx-bugs | ||||
| Version: | unspecified | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Bug Depends on: | 73037 | ||||||
| Bug Blocks: | |||||||
| Attachments: |
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bfafe93a1cd466ef318b7e5f6c65f59aee147791 is the first bad commit commit bfafe93a1cd466ef318b7e5f6c65f59aee147791 Author: Imre Deak <imre.deak@intel.com> AuthorDate: Thu Jun 5 20:31:47 2014 +0300 Commit: Jani Nikula <jani.nikula@intel.com> CommitDate: Mon Jun 23 10:02:03 2014 +0300 drm/i915: cache hw power well enabled state Jesse noticed that the punit communication needed to query the VLV power well status can cause substantial delays. Since we can query the state frequently, for example during I2C transfers, maintain a cached version of the HW state to get rid of this delay. This fixes at least one reported regression where boot time increased by ~4 seconds due to frequent power well state queries on VLV during eDP EDID read. This regression has been introduced in commit bb4932c4f17b68f34645ffbcf845e4c29d17290b Author: Imre Deak <imre.deak@intel.com> Date: Mon Apr 14 20:24:33 2014 +0300 drm/i915: vlv: check port power domain instead of only D0 for eDP VDD on Reported-by: Jesse Barnes <jesse.barnes@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> :040000 040000 fbc81acdbc7a7c97390719fc5d5d71fb24e11901 3663f8be487a862dd1c710521a17b2c61a6963c5 M drivers This looks like a duplicate of bug 73037. Could you double-check that the bisect result is correct, that is you can't reproduce the bug on the parent commit (a497c3ba1d97)? (In reply to comment #2) > This looks like a duplicate of bug 73037. Could you double-check that the > bisect result is correct, that is you can't reproduce the bug on the parent > commit (a497c3ba1d97)? Another bug 81367 reproduced on the parent commit(a497c3ba1d97), and can not find CallTrace on this commit. root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip --run-subtest plain-flip-fb-recreate-interruptible IGT-Version: 1.7-g4d4f4b2 (x86_64) (Linux: 3.16.0-rc2_kcloud_a497c3_20140722+ x86_64) Test assertion failure function kmstest_force_connector, file igt_kms.c:461: Failed assertion: debugfs_fd != -1 Last errno: 2, No such file or directory Subtest plain-flip-fb-recreate-interruptible: FAIL (In reply to comment #3) > (In reply to comment #2) > > This looks like a duplicate of bug 73037. Could you double-check that the > > bisect result is correct, that is you can't reproduce the bug on the parent > > commit (a497c3ba1d97)? > > Another bug 81367 reproduced on the parent commit(a497c3ba1d97), and can not > find CallTrace on this commit. > > root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip > --run-subtest plain-flip-fb-recreate-interruptible > IGT-Version: 1.7-g4d4f4b2 (x86_64) (Linux: > 3.16.0-rc2_kcloud_a497c3_20140722+ x86_64) > Test assertion failure function kmstest_force_connector, file igt_kms.c:461: > Failed assertion: debugfs_fd != -1 > Last errno: 2, No such file or directory > Subtest plain-flip-fb-recreate-interruptible: FAIL This is most probably timing related, so you'd need to run the test multiple times on each commit. In any case the same WARN is present in bug 73037 on a kernel much older than the bisected commit here, so as a minimum let's set that bug as a dependency. It seems this is a duplicate of 73037 with an invalid bisect result. Feel free to reopen if it is for sure caused by that commit. *** This bug has been marked as a duplicate of bug 73037 *** Closing old verified. |
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Created attachment 101995 [details] dmesg ==System Environment== -------------------------- Regression: Yes. The fail rate is about 1 out of 3 Good commit on -fixes：223a6f2b975ab35d93270ea1d4fb6e0ac6b27fe6 Non-working platforms: BYT ==kernel== -------------------------- origin/drm-intel-nightly: 1087d4bf01e79523898c6c31615bf0c369e0039a(fails) drm-intel-nightly: 2014y-06m-25d-13h-11m-05s integration manifest origin/drm-intel-next-queued: 91565c85b66db820f01894a971d39aaef60c4325(works) drm/i915: Don't try to look up object for non-existent fb origin/drm-intel-fixes: 8525a235c96a548873c6c5644f50df32b31f04c6(fails) drm/i915: vlv_prepare_pll is only needed in case of non DSI interfaces ==Bug detailed description== ----------------------------- igt/kms_flip subcases cause "WARNING: CPU: 0 PID: 3943 at drivers/gpu/drm/i915/intel_dp.c:3092 intel_dp_complete_link_train+0x100/0x27f [i915]()" sporadically Case list: igt/kms_flip/absolute-wf_vblank igt/kms_flip/absolute-wf_vblank-interruptible igt/kms_flip/bcs-flip-vs-dpms igt/kms_flip/bcs-flip-vs-modeset-interruptible igt/kms_flip/bcs-flip-vs-panning igt/kms_flip/bcs-flip-vs-panning-interruptible igt/kms_flip/bcs-wf_vblank-vs-modeset igt/kms_flip/bcs-wf_vblank-vs-modeset-interruptible igt/kms_flip/blocking-absolute-wf_vblank igt/kms_flip/blocking-absolute-wf_vblank-interruptible igt/kms_flip/blocking-wf_vblank igt/kms_flip/bo-too-big igt/kms_flip/bo-too-big-interruptible igt/kms_flip/busy-flip igt/kms_flip/busy-flip-interruptible igt/kms_flip/dpms-off-confusion igt/kms_flip/dpms-off-confusion-interruptible igt/kms_flip/dpms-vs-vblank-race igt/kms_flip/flip-vs-absolute-wf_vblank igt/kms_flip/flip-vs-absolute-wf_vblank-interruptible igt/kms_flip/flip-vs-blocking-wf-vblank igt/kms_flip/flip-vs-dpms igt/kms_flip/flip-vs-dpms-interruptible igt/kms_flip/flip-vs-dpms-off-vs-modeset-interruptible igt/kms_flip/flip-vs-expired-vblank igt/kms_flip/flip-vs-expired-vblank-interruptible igt/kms_flip/flip-vs-fences igt/kms_flip/flip-vs-fences-interruptible igt/kms_flip/flip-vs-modeset-interruptible igt/kms_flip/flip-vs-modeset-vs-hang igt/kms_flip/flip-vs-modeset-vs-hang-interruptible igt/kms_flip/flip-vs-panning igt/kms_flip/flip-vs-panning-interruptible igt/kms_flip/flip-vs-panning-vs-hang igt/kms_flip/flip-vs-panning-vs-hang-interruptible igt/kms_flip/flip-vs-rmfb igt/kms_flip/flip-vs-rmfb-interruptible igt/kms_flip/flip-vs-wf_vblank igt/kms_flip/flip-vs-wf_vblank-interruptible igt/kms_flip/modeset-vs-vblank-race igt/kms_flip/nonexisting-fb igt/kms_flip/nonexisting-fb-interruptible igt/kms_flip/plain-flip igt/kms_flip/plain-flip-fb-recreate igt/kms_flip/plain-flip-fb-recreate-interruptible igt/kms_flip/plain-flip-interruptible igt/kms_flip/plain-flip-ts-check igt/kms_flip/plain-flip-ts-check-interruptible igt/kms_flip/rcs-flip-vs-dpms igt/kms_flip/rcs-flip-vs-modeset igt/kms_flip/rcs-flip-vs-modeset-interruptible igt/kms_flip/rcs-flip-vs-panning igt/kms_flip/rcs-flip-vs-panning-interruptible igt/kms_flip/rcs-wf_vblank-vs-dpms igt/kms_flip/rcs-wf_vblank-vs-modeset igt/kms_flip/rcs-wf_vblank-vs-modeset-interruptible igt/kms_flip/single-buffer-flip-vs-dpms-off-vs-modeset-interruptible Output: root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip --run-subtest plain-flip-fb-recreate-interruptible IGT-Version: 1.7-g67e29a3 (x86_64) (Linux: 3.16.0-rc2_drm-intel-fixes_8525a2_20140630+ x86_64) Using monotonic timestamps Beginning plain-flip-fb-recreate-interruptible on crtc 5, connector 23 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... plain-flip-fb-recreate-interruptible on crtc 5, connector 23: PASSED Beginning plain-flip-fb-recreate-interruptible on crtc 9, connector 23 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... plain-flip-fb-recreate-interruptible on crtc 9, connector 23: PASSED Subtest plain-flip-fb-recreate-interruptible: SUCCESS Dmesg shows: [ 155.408801] WARNING: CPU: 0 PID: 3943 at drivers/gpu/drm/i915/intel_dp.c:3092 intel_dp_complete_link_train+0x100/0x27f [i915]() [ 155.408820] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support pcspkr serio_raw lpc_ich i2c_i801 mfd_core snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore iosf_mbi battery ac acpi_cpufreq i915 video button drm_kms_helper drm [ 155.408850] CPU: 0 PID: 3943 Comm: kms_flip Tainted: G W 3.16.0-rc2_drm-intel-fixes_8525a2_20140630+ #72 [ 155.408859] 0000000000000000 0000000000000009 ffffffff8177f9bf 0000000000000000 [ 155.408864] ffffffff8103983c 0000000000000000 ffffffffa00c1062 0000000000000002 [ 155.408869] ffff880002dea0d8 0000000000000002 0000000000000000 0000000000000022 [ 155.408880] Call Trace: [ 155.408887] [<ffffffff8177f9bf>] ? dump_stack+0x41/0x51 [ 155.408893] [<ffffffff8103983c>] ? warn_slowpath_common+0x78/0x90 [ 155.408922] [<ffffffffa00c1062>] ? intel_dp_complete_link_train+0x100/0x27f [i915] [ 155.408943] [<ffffffffa00c1062>] ? intel_dp_complete_link_train+0x100/0x27f [i915] [ 155.408964] [<ffffffffa00c125c>] ? intel_enable_dp+0x70/0x79 [i915] [ 155.408985] [<ffffffffa00c137b>] ? vlv_pre_enable_dp+0x100/0x11a [i915] [ 155.409007] [<ffffffffa00a6893>] ? valleyview_crtc_enable+0x864/0x960 [i915] [ 155.409029] [<ffffffffa00aa963>] ? __intel_set_mode+0x10cc/0x11d4 [i915] [ 155.409034] [<ffffffff8177c99c>] ? printk+0x4f/0x54 [ 155.409056] [<ffffffffa00ac876>] ? intel_set_mode+0xd/0x27 [i915] [ 155.409078] [<ffffffffa00ad45c>] ? intel_crtc_set_config+0x70e/0xa13 [i915] [ 155.409092] [<ffffffffa000c024>] ? drm_mode_set_config_internal+0x48/0xad [drm] [ 155.409104] [<ffffffffa000edd8>] ? drm_mode_setcrtc+0x3e6/0x48b [drm] [ 155.409110] [<ffffffff810612d4>] ? put_prev_entity+0x34/0x1dc [ 155.409120] [<ffffffffa0002f6e>] ? drm_ioctl+0x25c/0x3ad [drm] [ 155.409131] [<ffffffffa000e9f2>] ? drm_mode_setplane+0x381/0x381 [drm] [ 155.409137] [<ffffffff811195f7>] ? do_vfs_ioctl+0x3ec/0x435 [ 155.409142] [<ffffffff8110b874>] ? vfs_write+0x127/0x183 [ 155.409147] [<ffffffff81119689>] ? SyS_ioctl+0x49/0x78 [ 155.409152] [<ffffffff81785552>] ? system_call_fastpath+0x16/0x1b ==Reproduce steps== ---------------------------- 1. ./kms_flip --run-subtest plain-flip-fb-recreate-interruptible