[LNL] Sound card can't be created

[oortcomet]

Describe the bug

Null pointer dereference happens after applying the new patch and new topology on LNL platform. So the sound card can't be created.

To Reproduce

Please use below patch and topology: Linux kernel patch: https://github.com/thesofproject/linux/pull/5201/commits/8b16099b1b3af5014c50881dfb4b3ceb549891fd Topology patch: https://github.com/thesofproject/sof/pull/9550/commits/fa12b7ce30e4fc6f6e0e0b899112ba85ea7a4f61

Reproducible on ThinkPad-X1-2-in-1-Gen-10 hardware.

Environment

Branch name and commit hash of the 2 repositories: sof (topology) and linux (kernel driver). Kernel: 6.12.0-rc1-next (https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git) SOF: v2.11.1 Name of the topology file: sof-lnl-rt713-l0-rt1318-l1-2ch.tplg Name of the platform(s) on which the bug is observed: Lunarlake

dmesg_SoundCard_issue.txt

[oortcomet]

[    7.831650] BUG: kernel NULL pointer dereference, address: 000000000000001c
[    7.831652] #PF: supervisor read access in kernel mode
[    7.831653] #PF: error_code(0x0000) - not-present page
[    7.831655] PGD 0 P4D 0 
[    7.831657] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
...
[    7.831680] Call Trace:
[    7.831682]  <TASK>
[    7.831683]  ? __die+0x24/0x70
[    7.831687]  ? page_fault_oops+0x15a/0x460
[    7.831692]  ? __warn+0xbe/0x170
[    7.831695]  ? krealloc_noprof+0x28b/0x2b0
[    7.831697]  ? nbcon_cpu_emergency_exit+0xe/0x40
[    7.831703]  ? report_bug+0x18e/0x1a0
[    7.831707]  ? exc_page_fault+0x68/0x1e0
[    7.831710]  ? asm_exc_page_fault+0x26/0x30
[    7.831714]  ? krealloc_noprof+0x96/0x2b0
[    7.831717]  snd_array_new+0x56/0xc0 [snd_hda_core]
[    7.831726]  hdmi_parse_codec+0x2d7/0x4d0 [snd_hda_codec_hdmi]
[    7.831731]  parse_intel_hdmi+0x1b/0x100 [snd_hda_codec_hdmi]
[    7.831734]  patch_i915_adlp_hdmi+0x31/0x70 [snd_hda_codec_hdmi]
[    7.831738]  hdac_hda_codec_probe+0x131/0x400 [snd_soc_hdac_hda]

[oortcomet]

We switched to sof dev linux kernel and used the same patches and fw. The issue was not reproduced, and all audio functions work. Kernel: 6.11.0-rc6 https://github.com/thesofproject/linux

So close this issue.

[ujfalusi]

@kv2019i, @bardliao, looks like linux-next has an i915/HDA regression?