<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body><table border="1" cellspacing="0" cellpadding="8"> <tr> <th>Bug ID</th> <td><a class="bz_bug_link bz_status_NEW " title="NEW - [BSW]igt/gem_exec_nop/render sporadically causes system hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=88845">88845</a> </td> </tr> <tr> <th>Summary</th> <td>[BSW]igt/gem_exec_nop/render sporadically causes system hang </td> </tr> <tr> <th>Product</th> <td>DRI </td> </tr> <tr> <th>Version</th> <td>unspecified </td> </tr> <tr> <th>Hardware</th> <td>All </td> </tr> <tr> <th>OS</th> <td>Linux (All) </td> </tr> <tr> <th>Status</th> <td>NEW </td> </tr> <tr> <th>Severity</th> <td>critical </td> </tr> <tr> <th>Priority</th> <td>medium </td> </tr> <tr> <th>Component</th> <td>DRM/Intel </td> </tr> <tr> <th>Assignee</th> <td>intel-gfx-bugs@lists.freedesktop.org </td> </tr> <tr> <th>Reporter</th> <td>huax.lu@intel.com </td> </tr> <tr> <th>QA Contact</th> <td>intel-gfx-bugs@lists.freedesktop.org </td> </tr> <tr> <th>CC</th> <td>intel-gfx-bugs@lists.freedesktop.org </td> </tr></table> <p> <div> <pre>Created <span class=""><a href="attachment.cgi?id=112904" name="attach_112904" title="dmesg">attachment 112904</a> <a href="attachment.cgi?id=112904&action=edit" title="dmesg">[details]</a></span> dmesg ==System Environment== -------------------------- Regression: not sure, fail rate:2/4 no-working platforms: BSW ==kernel== -------------------------- drm-intel-nightly/70438b51bdd44180b83f10591c3bdc1832d11dc2 commit 70438b51bdd44180b83f10591c3bdc1832d11dc2 Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> 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: 375.000Âµs (ring=render) Time to exec x 2: 102.000Âµs (ring=render) Time to exec x 4: 27.250Âµs (ring=render) Time to exec x 8: 18.625Âµs (ring=render) Time to exec x 16: 13.812Âµs (ring=render) Time to exec x 32: 10.344Âµs (ring=render) Time to exec x 64: 8.109Âµs (ring=render) Time to exec x 128: 7.000Âµs (ring=render) Time to exec x 256: 6.312Âµs (ring=render) Time to exec x 512: 5.424Âµs (ring=render) Time to exec x 1024: 5.168Âµs (ring=render) Time to exec x 2048: 5.700Âµs (ring=render) Time to exec x 4096: 4.883Âµs (ring=render) Time to exec x 8192: 4.754Âµs (ring=render) Time to exec x 16384: 4.821Âµs (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</pre> </div> </p> <hr> <span>You are receiving this mail because:</span> <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>