[Bug 105863] [CI] igt at kms_flip@2x-modeset-vs-vblank-race - dmesg-fail - BUG: unable to handle kernel NULL pointer dereference -IP: snd_hda_spdif_ctls_unassign+0x30/0x40 [snd_hda_codec]

Fri Oct 5 13:20:19 UTC 2018

https://bugs.freedesktop.org/show_bug.cgi?id=105863

--- Comment #4 from felix at light-instruments.de ---
Hi there,
we recently noticed this Bug on Boot on an Intel NUC7i3DNKE with Ubuntu 16.04
and Kernel 4.13.0-36-generic. 
This is nondeterministic and took us around 50 boots to reproduce. If this is
really fixed is the driver version in Ubuntu 18.04 sufficient (meaning above
drm_tip14)? I can't really make sense of the numbering in respect to versions.
Kind regards Felix

The trace:
 kernel: BUG: unable to handle kernel NULL pointer dereference at          
(null)
 kernel: IP: snd_hda_spdif_ctls_unassign+0x3b/0x50 [snd_hda_codec]
 kernel: PGD 0 
 kernel: P4D 0 
 kernel: 
 kernel: Oops: 0002 [#1] SMP PTI
 kernel: Modules linked in: ccm arc4 snd_soc_skl(+) snd_soc_skl_ipc
snd_soc_sst_ipc snd_hda_codec_hdmi(+) snd_soc_sst_dsp snd_hda_ext_core
snd_soc_sst_match intel_rapl snd_soc_core x86_pkg_temp_thermal intel_powerclamp
coretemp snd_compress ac97_bus snd_pcm_dmaengine kvm_intel snd_hda_intel iwlmvm
snd_hda_codec kvm snd_hda_core mac80211 snd_hwdep irqbypass snd_pcm
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_seq_midi iwlwifi
snd_seq_midi_event snd_rawmidi snd_seq aesni_intel cfg80211 aes_x86_64
snd_seq_device snd_timer crypto_simd glue_helper cryptd intel_cstate
intel_rapl_perf snd wmi_bmof btusb mei_me idma64 ucsi_acpi shpchp btrtl
virt_dma mei intel_pch_thermal soundcore intel_lpss_pci typec_ucsi hci_uart
typec btbcm serdev btqca btintel bluetooth ecdh_generic intel_lpss_acpi
acpi_als
 kernel:  intel_lpss kfifo_buf tpm_crb industrialio acpi_pad mac_hid bridge stp
llc autofs4 btrfs xor raid6_pq i915 i2c_algo_bit drm_kms_helper syscopyarea
e1000e sysfillrect sysimgblt fb_sys_fops ahci ptp drm pps_core libahci wmi
i2c_hid hid video pinctrl_sunrisepoint pinctrl_intel
 kernel: CPU: 0 PID: 494 Comm: Xorg Not tainted 4.13.0-36-generic
#40~16.04.1-Ubuntu
 kernel: Hardware name: Intel Corporation NUC7i3DNKE/NUC7i3DNB, BIOS
DNKBLi30.86A.0032.2017.1218.2051 12/18/2017
 kernel: task: ffff9bfd9e518000 task.stack: ffffaeaec1154000
 kernel: RIP: 0010:snd_hda_spdif_ctls_unassign+0x3b/0x50 [snd_hda_codec]
 kernel: RSP: 0018:ffffaeaec1157858 EFLAGS: 00010206
 kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
 kernel: RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffff9bfda6745470
 kernel: RBP: ffffaeaec1157870 R08: ffff9bfda6745a10 R09: 0000000000000100
 kernel: R10: ffffffffc05db650 R11: ffff9bfda6745a10 R12: ffff9bfda6745000
 kernel: R13: ffff9bfda6745470 R14: ffff9bfda6745800 R15: ffff9bfda6745000
 kernel: FS:  00007fce8f5f7a00(0000) GS:ffff9bfdaec00000(0000)
knlGS:0000000000000000
 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 kernel: CR2: 0000000000000000 CR3: 0000000166bd6006 CR4: 00000000003606f0
 kernel: Call Trace:
 kernel:  update_eld+0x269/0x480 [snd_hda_codec_hdmi]
 kernel:  hdmi_present_sense+0x215/0x390 [snd_hda_codec_hdmi]
 kernel:  check_presence_and_report+0x60/0x90 [snd_hda_codec_hdmi]
 kernel:  intel_pin_eld_notify+0x6e/0x80 [snd_hda_codec_hdmi]
 kernel:  intel_audio_codec_disable+0xb1/0xe0 [i915]
 kernel:  intel_disable_ddi+0x40/0xd0 [i915]
 kernel:  intel_encoders_disable.isra.95+0x8e/0xa0 [i915]
 kernel:  haswell_crtc_disable+0x5a/0x170 [i915]
 kernel:  intel_atomic_commit_tail+0x153/0x10b0 [i915]
 kernel:  ? intel_atomic_commit_ready+0x75/0x7c [i915]
 kernel:  ? __i915_sw_fence_complete+0x101/0x1b0 [i915]
 kernel:  intel_atomic_commit+0x413/0x4b0 [i915]
 kernel:  ? drm_atomic_check_only+0x3d0/0x580 [drm]
 kernel:  ? drm_atomic_set_crtc_for_connector+0xe9/0x100 [drm]
 kernel:  drm_atomic_commit+0x51/0x60 [drm]
 kernel:  drm_atomic_helper_set_config+0x63/0xa0 [drm_kms_helper]
 kernel:  ? drm_modeset_lock+0x2f/0xa0 [drm]
 kernel:  __drm_mode_set_config_internal+0x6b/0x120 [drm]
 kernel:  drm_mode_setcrtc+0x4f6/0x640 [drm]
 kernel:  ? sock_recvmsg+0x43/0x50
 kernel:  ? drm_mode_getcrtc+0x180/0x180 [drm]
 kernel:  drm_ioctl_kernel+0x6b/0xb0 [drm]
 kernel:  drm_ioctl+0x3e4/0x450 [drm]
 kernel:  ? drm_mode_getcrtc+0x180/0x180 [drm]
 kernel:  do_vfs_ioctl+0xa4/0x600
 kernel:  ? __sys_recvmsg+0x51/0x90
 kernel:  ? __sys_recvmsg+0x80/0x90
 kernel:  SyS_ioctl+0x79/0x90
 kernel:  entry_SYSCALL_64_fastpath+0x24/0xab
 kernel: RIP: 0033:0x7fce8d441f47
 kernel: RSP: 002b:00007ffd069a67c8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
 kernel: RAX: ffffffffffffffda RBX: 00007ffd069a57d0 RCX: 00007fce8d441f47
 kernel: RDX: 00007ffd069a6800 RSI: 00000000c06864a2 RDI: 000000000000000a
 kernel: RBP: 000055869cec5630 R08: 0000000000000001 R09: 0000000000000000
 kernel: R10: 0000000000000000 R11: 0000000000003246 R12: 000000000000001a
 kernel: R13: 0000000000000013 R14: 000055869cec5628 R15: 0000000000000012
 kernel: Code: 00 00 41 54 53 49 89 fc 4c 89 ef 89 f3 e8 1e e4 f3 f7 41 0f af
9c 24 b8 04 00 00 49 8b 84 24 c0 04 00 00 ba ff ff ff ff 4c 89 ef <66> 89 14 18
e8 3c de f3 f7 5b 41 5c 41 5d 5d c3 0f 1f 44 00 00 
 kernel: RIP: snd_hda_spdif_ctls_unassign+0x3b/0x50 [snd_hda_codec] RSP:
ffffaeaec1157858
 kernel: CR2: 0000000000000000
 kernel: ---[ end trace a5378192d12b75de ]---

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