igt@kms_plane@pixel-format-pipe-b-planes-source-clamping - incomplete - Toggling workaround to 0 returns -512, WARNING: CPU: 0 PID: \d+ at drivers/gpu/drm/i915/display/intel_pipe_crc.c:\d+ intel_crtc_crc_setup_workarounds
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8777/shard-hsw4/igt@kms_plane@pixel-format-pipe-b-planes-source-clamping.html#dmesg-warnings439
<4> [267.299263] i915 0000:00:02.0: Toggling workaround to 0 returns -512
<4> [267.299345] WARNING: CPU: 0 PID: 1851 at drivers/gpu/drm/i915/display/intel_pipe_crc.c:332 intel_crtc_crc_setup_workarounds+0x161/0x190 [i915]
<4> [267.299348] Modules linked in: i2c_dev vgem snd_hda_codec_hdmi i915 mei_hdcp x86_pkg_temp_thermal coretemp snd_hda_codec_realtek snd_hda_codec_generic crct10dif_pclmul crc32_pclmul ledtrig_audio ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core r8169 snd_pcm mei_me mei realtek prime_numbers lpc_ich
<4> [267.299369] CPU: 0 PID: 1851 Comm: kms_plane Not tainted 5.8.0-rc6-CI-CI_DRM_8777+ #1
<4> [267.299372] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12 02/15/2016
<4> [267.299407] RIP: 0010:intel_crtc_crc_setup_workarounds+0x161/0x190 [i915]
<4> [267.299410] Code: 45 0f b6 f6 48 8b 5f 50 48 85 db 74 3e e8 57 09 54 e1 45 89 f8 44 89 f1 48 89 da 48 89 c6 48 c7 c7 78 f6 39 a0 e8 4f ec ee e0 <0f> 0b eb 88 83 ca 02 88 50 0a e9 40 ff ff ff be 03 00 00 00 48 89
<4> [267.299413] RSP: 0000:ffffc90000a43ba8 EFLAGS: 00010282
<4> [267.299415] RAX: 0000000000000000 RBX: ffff88840c0f9880 RCX: 0000000000000001
<4> [267.299418] RDX: 0000000080000001 RSI: ffffffff8232087b RDI: 00000000ffffffff
<4> [267.299420] RBP: ffff8883faaa0800 R08: 0000000000000000 R09: 0000000000000000
<4> [267.299422] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8883f7140000
<4> [267.299424] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000fffffe00
<4> [267.299427] FS: 00007f9dba47ae40(0000) GS:ffff88840f800000(0000) knlGS:0000000000000000
<4> [267.299429] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [267.299431] CR2: 00007f34d1828ed8 CR3: 0000000005610002 CR4: 00000000001606f0
<4> [267.299434] Call Trace:
<4> [267.299484] intel_crtc_set_crc_source+0x20f/0x2a0 [i915]
<4> [267.299508] crtc_crc_release+0x43/0xa0
<4> [267.299513] full_proxy_release+0x36/0xa0
<4> [267.299520] __fput+0xf4/0x260
<4> [267.299527] task_work_run+0x6e/0xb0
<4> [267.299534] do_exit+0x3b8/0xd80
<4> [267.299544] do_group_exit+0x42/0xb0
<4> [267.299551] get_signal+0x153/0xc30
<4> [267.299556] ? lock_acquire+0xb5/0x3c0
<4> [267.299561] ? handle_irq_event+0x3a/0x50
<4> [267.299566] do_signal+0x2b/0x8e0
<4> [267.299570] ? find_held_lock+0x2d/0x90
<4> [267.299583] __prepare_exit_to_usermode+0xb1/0x1a0
<4> [267.299589] ? asm_common_interrupt+0x8/0x40
<4> [267.299593] prepare_exit_to_usermode+0x5/0x30
<4> [267.299596] asm_common_interrupt+0x1e/0x40
<4> [267.299599] RIP: 0033:0x7f9db9622868
<4> [267.299602] Code: Bad RIP value.
<4> [267.299604] RSP: 002b:00007ffc43ca22e8 EFLAGS: 00000246
<4> [267.299608] RAX: 0000000000000000 RBX: 00007f9db9e625e6 RCX: cccccccccccccccd
<4> [267.299611] RDX: 0000000000000000 RSI: 00007ffc43ca2827 RDI: 0000000000000000
<4> [267.299613] RBP: 00007ffc43ca2860 R08: 00007f9db97775a0 R09: 0000000000000000
<4> [267.299616] R10: 0000000000000000 R11: 00007f9db9e625ee R12: 00007ffc43ca29f0
<4> [267.299619] R13: 0000000000000016 R14: 00007ffc43ca2870 R15: 0000000000000064
<4> [267.299633] irq event stamp: 1919393
<4> [267.299638] hardirqs last enabled at (1919399): [<ffffffff8113218f>] console_unlock+0x4cf/0x5a0
<4> [267.299642] hardirqs last disabled at (1919404): [<ffffffff81131d39>] console_unlock+0x79/0x5a0
<4> [267.299645] softirqs last enabled at (1919248): [<ffffffff81e0038f>] __do_softirq+0x38f/0x498
<4> [267.299649] softirqs last disabled at (1919237): [<ffffffff81c00f52>] asm_call_on_stack+0x12/0x20
<4> [267.299651] ---[ end trace cdb032462ab9b825 ]---