FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 1a414f48d7ccb197b61c18888b72327c98171844 ("ALSA: hda - Add a sanity check of pin / port mapping on i915 HDMI/DP") [ 16.012754] [drm] Initialized i915 1.6.0 20151218 for 0000:00:02.0 on minor 0 [ 16.129292] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 16.138473] ------------[ cut here ]------------ [ 16.140589] WARNING: CPU: 0 PID: 252 at sound/hda/hdac_i915.c:129 pin2port+0x2a/0x40 [snd_hda_core]() [ 16.145187] Modules linked in: coretemp kvm_intel kvm irqbypass crct10dif_pclmul ppdev mxm_wmi crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_codec_hdmi(+) ahci libahci aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr serio_raw snd_hda_codec_conexant snd_hda_codec_generic uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 intel_ips videobuf2_core libata snd_hda_intel sdhci_pci firewire_ohci sdhci videodev firewire_core crc_itu_t mmc_core i915 snd_hda_codec shpchp snd_hda_core snd_hwdep snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm thinkpad_acpi snd soundcore rfkill parport_pc parport wmi video acpi_cpufreq [ 16.149054] CPU: 0 PID: 252 Comm: modprobe Not tainted 4.5.0-rc6-00126-g1a414f4 #1 [ 16.149055] Hardware name: LENOVO 25222AU/25222AU, BIOS 6IET52WW (1.12 ) 02/16/2010 [ 16.149058] 0000000000000000 [ 16.149059] ffff88007ebfba40 [ 16.149060] ffffffff81425b9a To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Kernel Test Robot