<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_VERIFIED bz_closed" title="VERIFIED FIXED - [HSW Bisected]igt/kms_plane causes "WARNING: CPU: 3 PID: 4404 at drivers/gpu/drm/i915/intel_display.c:888 display_crc_ctl_write+0x563/0x75d [i915]()"" href="https://bugs.freedesktop.org/show_bug.cgi?id=79612#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_VERIFIED bz_closed" title="VERIFIED FIXED - [HSW Bisected]igt/kms_plane causes "WARNING: CPU: 3 PID: 4404 at drivers/gpu/drm/i915/intel_display.c:888 display_crc_ctl_write+0x563/0x75d [i915]()"" href="https://bugs.freedesktop.org/show_bug.cgi?id=79612">bug 79612</a> from <a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> Guo Jinxian</a> <pre>Created <a href="attachment.cgi?id=102054" name="attach_102054" title="dmesg">attachment 102054</a> <a href="attachment.cgi?id=102054&action=edit" title="dmesg">[details]</a> dmesg This bug still able to reproduce on latest -fixes(84b4e042c4707bd1bf05094a51111403d680dc39) [ 57.103584] WARNING: CPU: 6 PID: 4217 at drivers/gpu/drm/i915/intel_display.c:861 display_crc_ctl_write+0x568/0x762 [i915]() [ 57.103585] vblank wait timed out [ 57.103586] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic iTCO_wdt iTCO_vendor_support serio_raw pcspkr i2c_i801 lpc_ich mfd_core snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery wmi tpm_infineon tpm_tis tpm acpi_cpufreq i915 video button drm_kms_helper drm [ 57.103599] CPU: 6 PID: 4217 Comm: kms_plane Not tainted 3.16.0-rc2_drm-intel-fixes_84b4e0_20140701+ #104 [ 57.103600] Hardware name: ASUS All Series/Z87-EXPERT, BIOS 1008 05/17/2013 [ 57.103601] 0000000000000000 0000000000000009 ffffffff8177f9bf ffff880252b5fe28 [ 57.103602] ffffffff8103983c dead000000200200 ffffffffa00766f7 ffff8802566a8000 [ 57.103604] ffff880250eb0000 ffff880250eb80c8 ffff880255dd3000 0000000000000001 [ 57.103605] Call Trace: [ 57.103609] [<ffffffff8177f9bf>] ? dump_stack+0x41/0x51 [ 57.103612] [<ffffffff8103983c>] ? warn_slowpath_common+0x78/0x90 [ 57.103617] [<ffffffffa00766f7>] ? display_crc_ctl_write+0x568/0x762 [i915] [ 57.103619] [<ffffffff810398ec>] ? warn_slowpath_fmt+0x45/0x4a [ 57.103627] [<ffffffffa00a29ff>] ? intel_wait_for_vblank+0x77/0x1db [i915] [ 57.103632] [<ffffffffa00766f7>] ? display_crc_ctl_write+0x568/0x762 [i915] [ 57.103635] [<ffffffff8110b7fd>] ? vfs_write+0xb0/0x183 [ 57.103637] [<ffffffff8110bbde>] ? SyS_write+0x41/0x84 [ 57.103639] [<ffffffff81785552>] ? system_call_fastpath+0x16/0x1b</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> </ul> </body> </html>