==System Environment== -------------------------- Regression: Yes Good commit on drm-next: ca5a1b9ba0fb5291b555a23b76dbe5f6c30bfd7a Non-working platforms: BYT ==kernel== -------------------------- origin/drm-intel-nightly: d62845db2ec40e15a76e5d5ebfe1a039ea2538c4(fails) drm-intel-nightly: 2014y-07m-22d-17h-58m-03s integration manifest origin/drm-intel-next-queued: 1dd7389e898de2b7ceb90054fd96e4c3329b77ef(Another failed Bug 81367) drm/i915: Replace HAS_PCH_SPLIT which incorrectly lets some platforms in origin/drm-intel-fixes: a0d036b074b4a5a933e37fcb9bdd6b3cc80a0387(Another failed Bug 81367) drm/i915: Reorder the semaphore deadlock check, again origin/drm-fixes: ec8a362f2e6e380e7a1f66a6c9a7f6c237ab3520(Another failed Bug 81367) Merge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-fixes origin/drm-next: 7296c849bf2eca2bd7d34a4686a53e3089150ac1(fails) drm/i915: fix build without fbdev. ==Bug detailed description== ----------------------------- igt/kms_flip some subcases cause system hang Because system hang, unable to get dmesg. Output: root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time ./kms_flip --run-subtest 2x-absolute-wf_vblank IGT-Version: 1.7-g4d4f4b2 (x86_64) (Linux: 3.16.0-rc6_drm-intel-nightly_d62845_20140723+ x86_64) Using monotonic timestamps Beginning 2x-absolute-wf_vblank on crtc 7:12, connector 27:15 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 ..................................................................................................................................................................................... 2x-absolute-wf_vblank on crtc 7:12, connector 27:15: PASSED Subtest 2x-absolute-wf_vblank: SUCCESS Write failed: Broken pipe Reproduce steps: ------------------------- 1. ./kms_flip --run-subtest 2x-absolute-wf_vblank
Created attachment 103379 [details] dmesg
c51f71679042a5f388d9580ffbede14c897f1e86 is the first bad commit commit c51f71679042a5f388d9580ffbede14c897f1e86 Merge: b957f45 7b3c29f Author: Dave Airlie <airlied@redhat.com> AuthorDate: Sat Jul 19 16:43:41 2014 +1000 Commit: Dave Airlie <airlied@redhat.com> CommitDate: Sat Jul 19 16:43:41 2014 +1000 Merge tag 'drm-intel-next-2014-07-11' of git://anongit.freedesktop.org/drm-intel into drm-next - fbc improvements when stolen memory is tight (Ben) - cdclk handling improvements for vlv/chv (Ville) - proper fix for stuck primary planes on gmch platforms with cxsr (Imre&Ebgert Eich) - gen8 hw semaphore support (Ben) - more execlist prep work from Oscar Mateo - locking fixes for primary planes (Matt Roper) - code rework to support runtime pm for dpms on hsw/bdw (Paulo, Imre & me), but not yet enabled because some fixes from Paulo haven't made the cut - more gpu boost tuning from Chris - as usual piles of little things all over * tag 'drm-intel-next-2014-07-11' of git://anongit.freedesktop.org/drm-intel: (93 commits) drm/i915: Make the RPS interrupt generation mask handle the vlv wa drm/i915: Move RPS evaluation interval counters to i915->rps drm/i915: Don't cast a pointer to void* unnecessarily drm/i915: don't read LVDS regs at compute_config time drm/i915: check the power domains in intel_lvds_get_hw_state() drm/i915: check the power domains in ironlake_get_pipe_config() drm/i915: don't skip shared DPLL assertion on LPT drm/i915: Only touch WRPLL hw state in enable/disable hooks drm/i915: Switch to common shared dpll framework for WRPLLs drm/i915: ->enable hook for WRPLLs drm/i915: ->disable hook for WRPLLs drm/i915: State readout support for WRPLLs drm/i915: add POWER_DOMAIN_PLLS drm/i915: Document that the pll->mode_set hook is optional drm/i915: Basic shared dpll support for WRPLLs drm/i915: Precompute static ddi_pll_sel values in encoders drm/i915: BDW also has special-purpose DP DDI clocks drm/i915: State readout and cross-checking for ddi_pll_sel drm/i915: Move ddi_pll_sel into the pipe config drm/i915: Add a debugfs file for the shared dpll state ... This commit has two parents b957f457fbce30cc4901dc28f2b56f2b15dfe84a and 7b3c29f6fd374640266d82aafe6929761469e27b On commit b957f457fbce30cc4901dc28f2b56f2b15dfe84a was passed On commit 7b3c29f6fd374640266d82aafe6929761469e27b was skipped
Test on latest -nightly kernel, the hang goes away. ./kms_flip --run-subtest 2x-absolute-wf_vblank IGT-Version: 1.7-g4d2f511 (x86_64) (Linux: 3.17.0-rc1_drm-intel-nightly_257d90_20140822+ x86_64) Using monotonic timestamps Beginning 2x-absolute-wf_vblank on crtc 7:13, connector 28:16 1366x768 60 1366 1404 1426 1482 768 771 777 798 0xa 0x48 71000 1366x768 60 1366 1404 1426 1482 768 771 777 798 0xa 0x48 71000 ..................................................................................................................................................................................... 2x-absolute-wf_vblank on crtc 7:13, connector 28:16: PASSED Subtest 2x-absolute-wf_vblank: SUCCESS
(In reply to comment #3) > Test on latest -nightly kernel, the hang goes away. > ./kms_flip --run-subtest 2x-absolute-wf_vblank > IGT-Version: 1.7-g4d2f511 (x86_64) (Linux: > 3.17.0-rc1_drm-intel-nightly_257d90_20140822+ x86_64) > Using monotonic timestamps > Beginning 2x-absolute-wf_vblank on crtc 7:13, connector 28:16 > 1366x768 60 1366 1404 1426 1482 768 771 777 798 0xa 0x48 71000 > 1366x768 60 1366 1404 1426 1482 768 771 777 798 0xa 0x48 71000 > ............................................................................. > ............................................................................. > ........................... > 2x-absolute-wf_vblank on crtc 7:13, connector 28:16: PASSED > > Subtest 2x-absolute-wf_vblank: SUCCESS
Closing old verified.
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