Created attachment 112904 [details] dmesg ==System Environment== -------------------------- Regression: not sure, fail rate:2/4 no-working platforms: BSW ==kernel== -------------------------- drm-intel-nightly/70438b51bdd44180b83f10591c3bdc1832d11dc2 commit 70438b51bdd44180b83f10591c3bdc1832d11dc2 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Tue Jan 27 12:11:03 2015 +0100 drm-intel-nightly: 2015y-01m-27d-11h-10m-41s UTC integration manifest ==Bug detailed description== ----------------------------- It sporadically causes system hang, fail rate:2/4. Test -nightly kernel and -next-queued kernel. output: IGT-Version: 1.9-gebd8b32 (x86_64) (Linux: 3.19.0-rc6_drm-intel-nightly_70438b_20150128+ x86_64) Time to exec x 1: 375.000µs (ring=render) Time to exec x 2: 102.000µs (ring=render) Time to exec x 4: 27.250µs (ring=render) Time to exec x 8: 18.625µs (ring=render) Time to exec x 16: 13.812µs (ring=render) Time to exec x 32: 10.344µs (ring=render) Time to exec x 64: 8.109µs (ring=render) Time to exec x 128: 7.000µs (ring=render) Time to exec x 256: 6.312µs (ring=render) Time to exec x 512: 5.424µs (ring=render) Time to exec x 1024: 5.168µs (ring=render) Time to exec x 2048: 5.700µs (ring=render) Time to exec x 4096: 4.883µs (ring=render) Time to exec x 8192: 4.754µs (ring=render) Time to exec x 16384: 4.821µs (ring=render) (gem_exec_nop:4427) CRITICAL: Test assertion failure function loop, file gem_exec_nop.c:100: (gem_exec_nop:4427) CRITICAL: Failed assertion: exec(fd, handle, count, ring_id) == 0 Subtest render: FAIL (66.469s) dmesg: [ 131.802039] ------------[ cut here ]------------ [ 131.802092] WARNING: CPU: 3 PID: 4427 at drivers/gpu/drm/i915/intel_lrc.c:506 intel_logical_ring_advance_and_submit+0x73/0x254 [i915]() [ 131.802096] execlist context submission without request [ 131.802099] Modules linked in: ipv6 dm_mod snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic serio_raw pcspkr snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm lpc_ich snd_timer mfd_core snd soundcore i2c_i801 battery ac acpi_cpufreq joydev i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [ 131.802147] CPU: 3 PID: 4427 Comm: gem_exec_nop Not tainted 3.19.0-rc6_drm-intel-nightly_70438b_20150128+ #1026 [ 131.802151] 0000000000000000 0000000000000009 ffffffff81799da8 ffff880175213a78 [ 131.802158] ffffffff8103bdec 0000000000012480 ffffffffa00ba963 0000000000000000 [ 131.802164] ffff8801754518b8 0000000000000000 ffff880175450000 ffff8800028e4900 [ 131.802171] Call Trace: [ 131.802184] [<ffffffff81799da8>] ? dump_stack+0x40/0x50 [ 131.802193] [<ffffffff8103bdec>] ? warn_slowpath_common+0x98/0xb0 [ 131.802228] [<ffffffffa00ba963>] ? intel_logical_ring_advance_and_submit+0x73/0x254 [i915] [ 131.802236] [<ffffffff8103be9c>] ? warn_slowpath_fmt+0x45/0x4a [ 131.802271] [<ffffffffa00ba963>] ? intel_logical_ring_advance_and_submit+0x73/0x254 [i915] [ 131.802297] [<ffffffffa010c407>] ? logical_ring_wait_for_space+0xc2/0x150 [i915] [ 131.802333] [<ffffffffa00bae2a>] ? intel_logical_ring_begin+0xea/0x1ea [i915] [ 131.802341] [<ffffffff8110d587>] ? kmem_cache_free+0xf6/0x134 [ 131.802376] [<ffffffffa00bb006>] ? gen8_emit_flush_render+0x3d/0xe1 [i915] [ 131.802411] [<ffffffffa00bb482>] ? intel_execlists_submission+0x230/0x34b [i915] [ 131.802441] [<ffffffffa009e347>] ? i915_gem_do_execbuffer.isra.12+0xca1/0xd88 [i915] [ 131.802449] [<ffffffff8105d25f>] ? check_preempt_wakeup+0x117/0x169 [ 131.802455] [<ffffffff8105eafc>] ? enqueue_task_fair+0x441/0x88d [ 131.802462] [<ffffffff8110d964>] ? __kmalloc+0x66/0x151 [ 131.802491] [<ffffffffa009f381>] ? i915_gem_execbuffer2+0x172/0x209 [i915] [ 131.802520] [<ffffffffa009f20f>] ? i915_gem_execbuffer+0x350/0x350 [i915] [ 131.802538] [<ffffffffa001070a>] ? drm_ioctl+0x279/0x3bc [drm] [ 131.802544] [<ffffffff8105ca3d>] ? set_next_entity+0x14/0x37 [ 131.802574] [<ffffffffa009f20f>] ? i915_gem_execbuffer+0x350/0x350 [i915] [ 131.802590] [<ffffffffa0010491>] ? drm_copy_field+0x50/0x50 [drm] [ 131.802598] [<ffffffff81122409>] ? do_vfs_ioctl+0x412/0x459 [ 131.802605] [<ffffffff81129786>] ? __fdget+0x5/0x7 [ 131.802612] [<ffffffff81122499>] ? SyS_ioctl+0x49/0x78 [ 131.802620] [<ffffffff8179f792>] ? system_call_fastpath+0x12/0x17 [ 131.802625] ---[ end trace 26c26963615ce067 ]--- [ 131.802628] ------------[ cut here ]------------ [ 131.802663] WARNING: CPU: 3 PID: 4427 at include/linux/kref.h:47 intel_logical_ring_advance_and_submit+0xed/0x254 [i915]() ==Reproduce steps== ---------------------------- 1. ./gem_exec_nop --run-subtest render
add i915.enable_ppgtt=0 and run 10 cycles, it works well.
Bisect shows: 6d3d8274bc45de4babb62d64562d92af984dd238 is the first bad commit. commit 6d3d8274bc45de4babb62d64562d92af984dd238 Author: Nick Hoath <nicholas.hoath@intel.com> AuthorDate: Thu Jan 15 13:10:39 2015 +0000 Commit: Daniel Vetter <daniel.vetter@ffwll.ch> CommitDate: Tue Jan 27 09:50:53 2015 +0100 drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request Move all remaining elements that were unique to execlists queue items in to the associated request. Issue: VIZ-4274 v2: Rebase. Fixed issue of overzealous freeing of request. v3: Removed re-addition of cleanup work queue (found by Daniel Vetter) v4: Rebase. v5: Actual removal of intel_ctx_submit_request. Update both tail and postfix pointer in __i915_add_request (found by Thomas Daniel) v6: Removed unrelated changes Signed-off-by: Nick Hoath <nicholas.hoath@intel.com> Reviewed-by: Thomas Daniel <thomas.daniel@intel.com> [danvet: Reformat comment with strange linebreaks.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
*** This bug has been marked as a duplicate of bug 88652 ***
Verified.Fixed.
Closing old verified.
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