/opt/igt/tests/kms_pipe_crc_basic --run-subtest nonblocking-crc-pipe-B-frame-sequence dmesg [ 295.562825] ------------[ cut here ]------------ [ 295.562858] WARNING: CPU: 0 PID: 6858 at drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x7e/0x90 [i915]() [ 295.562859] Unclaimed register detected before writing to register 0x45110 [ 295.562860] Modules linked in: snd_hda_intel i915 snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec snd_hwdep snd_hda_core i2c_hid mei_me snd_pcm mei i2c_designware_platform lpc_ich i2c_designware_core r8169 mii sdhci_acpi sdhci mmc_core [last unloaded: i915] [ 295.562873] CPU: 0 PID: 6858 Comm: kms_pipe_crc_ba Tainted: G U W 4.5.0-rc6-gfxbench+ #1 [ 295.562874] Hardware name: GIGABYTE M4HM87P-00/M4HM87P-00, BIOS F6 12/10/2014 [ 295.562875] 0000000000000000 ffff8800d914b910 ffffffff813fba95 ffff8800d914b958 [ 295.562877] ffffffffa03c3d90 ffff8800d914b948 ffffffff81078711 0000000000045110 [ 295.562878] 0000000000000001 0000000000000000 000000000892d21a 0000000000000296 [ 295.562880] Call Trace: [ 295.562883] [<ffffffff813fba95>] dump_stack+0x67/0x92 [ 295.562886] [<ffffffff81078711>] warn_slowpath_common+0x81/0xc0 [ 295.562887] [<ffffffff81078797>] warn_slowpath_fmt+0x47/0x50 [ 295.562901] [<ffffffffa032ac8e>] __unclaimed_reg_debug+0x7e/0x90 [i915] [ 295.562911] [<ffffffffa033266b>] hsw_write32+0x21b/0x270 [i915] [ 295.562920] [<ffffffffa02dba68>] _ilk_disable_lp_wm+0x98/0xd0 [i915] [ 295.562929] [<ffffffffa02e1074>] ilk_program_watermarks+0x4e4/0x9a0 [i915] [ 295.562938] [<ffffffffa02e1640>] ilk_optimize_watermarks+0x110/0x130 [i915] [ 295.562950] [<ffffffffa0350a94>] intel_atomic_commit+0x8b4/0x1610 [i915] [ 295.562952] [<ffffffff8152ba4a>] ? drm_atomic_set_crtc_for_connector+0x2a/0xe0 [ 295.562954] [<ffffffff8152c722>] drm_atomic_commit+0x32/0x50 [ 295.562956] [<ffffffff81509175>] drm_atomic_helper_set_config+0x75/0xb0 [ 295.562958] [<ffffffff8151cb60>] drm_mode_set_config_internal+0x60/0x110 [ 295.562959] [<ffffffff81520276>] drm_mode_setcrtc+0x186/0x4f0 [ 295.562961] [<ffffffff8118d0b8>] ? __might_fault+0x48/0xa0 [ 295.562963] [<ffffffff8151215d>] drm_ioctl+0x13d/0x590 [ 295.562964] [<ffffffff815200f0>] ? drm_mode_setplane+0x1b0/0x1b0 [ 295.562966] [<ffffffff811e5c7a>] do_vfs_ioctl+0x8a/0x670 [ 295.562968] [<ffffffff817c3026>] ? int_ret_from_sys_call+0x52/0x9f [ 295.562970] [<ffffffff811f1b2a>] ? __fget_light+0x6a/0x90 [ 295.562971] [<ffffffff811e629c>] SyS_ioctl+0x3c/0x70 [ 295.562973] [<ffffffff817c2e9b>] entry_SYSCALL_64_fastpath+0x16/0x73 [ 295.562974] ---[ end trace dea6ba6d805caae2 ]---
Also sighted in: /archive/results/CI_IGT_test/Patchwork_1521/hsw-gt2/html/hsw-gt2@Patchwork_1521@1/igt@kms_flip@basic-flip-vs-wf_vblank.html
Trace in https://bugs.freedesktop.org/show_bug.cgi?id=94349 is similar so very likely a dup. Only difference is that this is detected by hw unclaimed detector instead of driver one.
*** This bug has been marked as a duplicate of bug 94349 ***
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.