<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL]Webglc sporadically causes system hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=90136#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL]Webglc sporadically causes system hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=90136">bug 90136</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>(In reply to lu hua from <a href="show_bug.cgi?id=90136#c4">comment #4</a>) > Created <a href="attachment.cgi?id=115283" name="attach_115283" title="dmesg(70614661)">attachment 115283</a> <a href="attachment.cgi?id=115283&action=edit" title="dmesg(70614661)">[details]</a> > dmesg(70614661) > > Test on commit 70614661341ffb26de05e84c6958563b45964223, system hang. > Clean boot system, wait 5 minutes or run xinit, system hang. > > dmesg: > [ 175.024940] ------------[ cut here ]------------ > [ 175.024984] WARNING: CPU: 1 PID: 5255 at drivers/gpu/drm/drm_mm.c:367 > i915_vma_unbind+0x112/0x1bc [i915]() > [ 175.024995] Modules linked in: dm_mod ppdev snd_hda_codec_realtek > snd_hda_codec_generic pcspkr snd_hda_intel snd_hda_controller snd_hda_codec > snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore i2c_i801 joydev wmi > battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper > drm > [ 175.025030] CPU: 1 PID: 5255 Comm: X Not tainted > 4.0.0_kcloud_706146_20150423+ #364 > [ 175.025034] Hardware name: Intel Corporation Skylake Client > platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 > 12/31/2014 > [ 175.025038] 0000000000000000 0000000000000009 ffffffff81795a87 > 0000000000000000 > [ 175.025044] ffffffff8103bd5a ffff88009ad86d00 ffffffffa00a166b > ffff88009ad86d00 > [ 175.025050] ffff8801483c3380 ffff88009ad86d00 0000000000000001 > ffff8801442d0000 > [ 175.025056] Call Trace: > [ 175.025068] [<ffffffff81795a87>] ? dump_stack+0x40/0x50 > [ 175.025078] [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0 > [ 175.025109] [<ffffffffa00a166b>] ? i915_vma_unbind+0x112/0x1bc [i915] > [ 175.025137] [<ffffffffa00a166b>] ? i915_vma_unbind+0x112/0x1bc [i915] > [ 175.025163] [<ffffffffa00a1740>] ? i915_vma_close+0x2b/0x80 [i915] > [ 175.025188] [<ffffffffa00a17fb>] ? i915_gem_close_object+0x66/0x125 > [i915] > [ 175.025205] [<ffffffffa0003d35>] ? drm_gem_handle_delete+0xaa/0xbd [drm] > [ 175.025221] [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm] > [ 175.025241] [<ffffffffa0003f97>] ? drm_gem_handle_create+0x37/0x37 [drm] > [ 175.025248] [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55 > [ 175.025257] [<ffffffff8111dcde>] ? do_vfs_ioctl+0x360/0x424 > [ 175.025265] [<ffffffff817987d2>] ? __schedule+0x589/0x7c9 > [ 175.025271] [<ffffffff8104fad2>] ? task_work_run+0x84/0x96 > [ 175.025278] [<ffffffff8111ddeb>] ? SyS_ioctl+0x49/0x7a > [ 175.025284] [<ffffffff8179b472>] ? system_call_fastpath+0x12/0x17 > [ 175.025288] ---[ end trace eab6accbedda9078 ]--- > [ 175.025301] BUG: unable to handle kernel NULL pointer dereference at > 0000000000000008 Sure but that is a bug from another commit.</pre> </div> <hr> You are receiving this mail because: <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>