NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

[Krzysztof Hałasa]

Hello,

I'm trying to use some audio on a certain new laptop:
DMI: LENOVO 83R0/LNVNB161216, BIOS UCCN16WW 08/07/2026. Aka Yoga 7 Slim
14ILL11 or something like that. Also LENOVO_MT_83R0_BU_idea_FM_Yoga
Slim 7 14ILL11.
Linux version 7.4.0-rc2+
Ubuntu 26.04.01 LTS.
Kernel config is copied from Ubuntu 26.04.01 LTS test kernel.
Lots of ACPI errors in dmesg.

Oops: general protection fault, kernel NULL pointer dereference 0x38: 0000 [#1] SMP NOPTI
CPU: 5 UID: 0 PID: 797 Comm: (udev-worker) Tainted: G E 7.4.0-rc2+ #1 PREEMPT(lazy)
Tainted: [E]=UNSIGNED_MODULE
Hardware name: LENOVO 83R0/LNVNB161216, BIOS UCCN16WW 08/07/2026
RIP: 0010:snd_soc_card_get_kcontrol.cold+0x73/0xe3 [snd_soc_core]
Code: d2 6b 39 c1 e8 1d 03 96 fa 4c 8b 45 a0 4c 8b 4d a8 31 c0 b9 10 00 00 00 48 8d 7d b0 be 2c 00 00 00 f3 ab 4c 89 c7 4c 89 45 a8 <49> 8b 59 38 c7 45 b4 02 00 00 00 e8 bc 68 fa fb 4c 8b 45 a8 48 83
RSP: 0018:ffffd4bec5aef418 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8df1c6668e38 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000002c RDI: ffffd4bec5aef48c
RBP: ffffd4bec5aef478 R08: ffffd4bec5aef48c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffc284a835
R13: 0000000000000005 R14: ffff8df1c6668e38 R15: 0000000000000000
FS:  000074609ecccc80(0000) GS:ffff8df57084b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000073f68f08e250 CR3: 00000001a07ff003 CR4: 0000000008f72ef0
PKRU: 55555554
Call Trace:
 <TASK>
 snd_soc_component_get_kcontrol+0x88/0xd0 [snd_soc_core]
 cs42l43_dai_probe+0xb3/0x150 [snd_soc_cs42l43]
 snd_soc_pcm_dai_probe+0x5a/0xe0 [snd_soc_core]
 snd_soc_bind_card+0x6f5/0xda0 [snd_soc_core]
 call_soc_bind_card+0x69/0xf0 [snd_soc_core]
 snd_soc_component_register+0x19b/0x2f0 [snd_soc_core]
 ? snd_soc_component_new+0xc1/0x110 [snd_soc_core]
 snd_soc_register_component+0x32/0x50 [snd_soc_core]
 cs35l56_component_register+0x42/0x7e [snd_soc_cs35l56]
 cs35l56_common_probe+0x7ba/0x88a [snd_soc_cs35l56]
 cs35l56_spi_probe+0xc3/0xe0 [snd_soc_cs35l56_spi]
 spi_probe+0x62/0xe0
 really_probe+0xff/0x3c0
 __driver_probe_device+0xad/0x1e0
 ? spi_match_device+0xe6/0x110
 driver_probe_device+0x24/0xb0
 ? __pfx___driver_attach+0x10/0x10
 __driver_attach+0xf8/0x260
 ? __pfx___driver_attach+0x10/0x10
 bus_for_each_dev+0x93/0x100
 driver_attach+0x1e/0x30
 bus_add_driver+0x1fd/0x2a0
 driver_register+0x75/0xf0
 __spi_register_driver+0xaf/0x100
 ? __pfx_init_module+0x10/0x10 [snd_soc_cs35l56_spi]
 cs35l56_spi_driver_init+0x1c/0xff0 [snd_soc_cs35l56_spi]
 do_one_initcall+0x81/0x3f0
 do_init_module+0x93/0x2c0
 load_module+0x2239/0x2660
 ? ima_post_read_file+0x11a/0x1a0
 ? security_kernel_post_read_file+0x70/0x1e0
 init_module_from_file+0xf0/0x1d0
 idempotent_init_module+0x218/0x340
 __x64_sys_finit_module+0x7c/0x110
 x64_sys_call+0xfbc/0x23d0
 do_syscall_64+0xbd/0x570
 ? vfs_read+0x1b2/0x460
 ? vfs_read+0x1b2/0x460
 ? ksys_pread64+0x5c/0xd0
 ? do_syscall_64+0x293/0x570
 ? __x64_sys_newfstatat+0x1c/0x30
 ? x64_sys_call+0x2074/0x23d0
 ? do_syscall_64+0xfa/0x570
 ? __x64_sys_finit_module+0x7c/0x110
 ? do_syscall_64+0x293/0x570
 ? putname+0x41/0x90
 ? do_sys_openat2+0x75/0xf0
 ? __x64_sys_openat+0x5f/0xa0
 ? x64_sys_call+0x1a20/0x23d0
 ? do_syscall_64+0xfa/0x570
 ? exc_page_fault+0x9d/0x1d0
 ? do_syscall_64+0x33/0x570
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x74609e534acd
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 0b d3 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd1c5fa158 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 000062a3e7400e50 RCX: 000074609e534acd
RDX: 0000000000000000 RSI: 000074609e63d317 RDI: 000000000000002c
RBP: 00007ffd1c5fa1f0 R08: 0000000000000000 R09: 000062a3e7529fb0
R10: 0000000000000000 R11: 0000000000000246 R12: 000074609e63d317
R13: 000062a3e7378770 R14: 0000000000020000 R15: 0000000000000000
 </TASK>
Modules linked in: many
---[ end trace 0000000000000000 ]---
RIP: 0010:snd_soc_card_get_kcontrol.cold+0x73/0xe3 [snd_soc_core]
Code: d2 6b 39 c1 e8 1d 03 96 fa 4c 8b 45 a0 4c 8b 4d a8 31 c0 b9 10 00 00 00 48 8d 7d b0 be 2c 00 00 00 f3 ab 4c 89 c7 4c 89 45 a8 <49> 8b 59 38 c7 45 b4 02 00 00 00 e8 bc 68 fa fb 4c 8b 45 a8 48 83
RSP: 0018:ffffd4bec5aef418 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8df1c6668e38 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000002c RDI: ffffd4bec5aef48c
RBP: ffffd4bec5aef478 R08: ffffd4bec5aef48c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffc284a835
R13: 0000000000000005 R14: ffff8df1c6668e38 R15: 0000000000000000
FS:  000074609ecccc80(0000) GS:ffff8df5706cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000062a3e720ea78 CR3: 00000001a07ff006 CR4: 0000000008f72ef0


Tried 7.3.something first, no NULL ptr dereferences, but it tried to
talk with some ghost rt711-sdca chip, and the sound didn't work either.
7.2.x, there were some topology problems or something, apparently that
was fixed in the tree.

Added some pr_crit()s:

sof-audio-pci-intel-lnl 0000:00:1f.3: enabling device (0000 -> 0002)
sof-audio-pci-intel-lnl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
sof-audio-pci-intel-lnl 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [xe])
sof-audio-pci-intel-lnl 0000:00:1f.3: use msi interrupt mode
cs42l43 sdw:0:0:01fa:4243:01: supply vdd-p not found, using dummy regulator
cs42l43 sdw:0:0:01fa:4243:01: supply vdd-d not found, using dummy regulator
cs42l43 sdw:0:0:01fa:4243:01: supply vdd-a not found, using dummy regulator
cs42l43 sdw:0:0:01fa:4243:01: supply vdd-io not found, using dummy regulator
cs42l43 sdw:0:0:01fa:4243:01: supply vdd-cp not found, using dummy regulator
sof-audio-pci-intel-lnl 0000:00:1f.3: No SoundWire machine driver found for the ACPI-reported configuration:
sof-audio-pci-intel-lnl 0000:00:1f.3: link 0 mfg_id 0x01fa part_id 0x4243 version 0x3
sof-audio-pci-intel-lnl 0000:00:1f.3: Use SoundWire default machine driver with function topologies
sof-audio-pci-intel-lnl 0000:00:1f.3: hda codecs found, mask 4
sof-audio-pci-intel-lnl 0000:00:1f.3: NHLT device BT(0) detected, ssp_mask 0x4
sof-audio-pci-intel-lnl 0000:00:1f.3: BT link detected in NHLT tables: 0x4
sof-audio-pci-intel-lnl 0000:00:1f.3: DMICs detected in NHLT tables: 4
cs42l43 sdw:0:0:01fa:4243:01: devid: 0x042a43, rev: 0xa1, otp: 0x03
sof-audio-pci-intel-lnl 0000:00:1f.3: Firmware paths/files for ipc type 1:
sof-audio-pci-intel-lnl 0000:00:1f.3:  Firmware file:     intel/sof-ipc4/lnl/sof-lnl.ri
sof-audio-pci-intel-lnl 0000:00:1f.3:  Firmware lib path: intel/sof-ipc4-lib/lnl
sof-audio-pci-intel-lnl 0000:00:1f.3:  Topology file:     function topologies
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded firmware library: ADSPFW, version: 2.14.1.1
Adding alias for supply vdd-amp,(null) -> vdd-amp,sdw:0:0:01fa:4243:01
cs35l56_spi_probe
cs35l56_common_probe
cs35l56 spi-cs35l56-left: supply VDD_P not found, using dummy regulator
cs35l56 spi-cs35l56-left: supply VDD_IO not found, using dummy regulator
cs35l56 spi-cs35l56-left: supply VDD_A not found, using dummy regulator
cs35l56_common_probe: about to call cs35l56_init()
cs35l56 spi-cs35l56-left: Cirrus Logic CS35L56 Rev B0 OTP3 fw:3.4.4 (patched=0)
sof-audio-pci-intel-lnl 0000:00:1f.3: Booted firmware version: 2.14.1.1
cs35l56_common_probe: about to call cs35l56_component_register()
cs35l56_component_register
cs35l56_spi_probe
cs35l56_common_probe
cs35l56 spi-cs35l56-right: supply VDD_P not found, using dummy regulator
cs35l56 spi-cs35l56-right: supply VDD_IO not found, using dummy regulator
cs35l56 spi-cs35l56-right: supply VDD_A not found, using dummy regulator
cs35l56_common_probe: about to call cs35l56_init()
cs35l56 spi-cs35l56-right: Cirrus Logic CS35L56 Rev B0 OTP3 fw:3.4.4 (patched=0)
cs35l56_common_probe: about to call cs35l56_component_register()
cs35l56_component_register
snd_soc_component_get_kcontrol(Speaker Digital Switch, name = Speaker Digital Switch): component->card is NULL, expect problems
snd_soc_card_get_kcontrol(): name: "Speaker Digital Switch"
soc_card: NULL
Oops: general protection fault, kernel NULL pointer dereference follows.

What are my options?

Additional info available on request. This is not my laptop, though.
-- 
Krzysztof "Chris" Hałasa

Łukasiewicz Research Network
Industrial Research Institute for Automation and Measurements PIAP

Al. Jerozolimskie 202, 02-486 Warsaw, Poland

Re: NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

[Charles Keepax]

On Tue, Nov 10, 2026 at 01:30:52PM +0100, Krzysztof Hałasa wrote:
> I'm trying to use some audio on a certain new laptop:
> DMI: LENOVO 83R0/LNVNB161216, BIOS UCCN16WW 08/07/2026. Aka Yoga 7 Slim
> 14ILL11 or something like that. Also LENOVO_MT_83R0_BU_idea_FM_Yoga
> Slim 7 14ILL11.
> Linux version 7.4.0-rc2+
> Ubuntu 26.04.01 LTS.
> Kernel config is copied from Ubuntu 26.04.01 LTS test kernel.
> Lots of ACPI errors in dmesg.
> 
> Tried 7.3.something first, no NULL ptr dereferences, but it tried to
> talk with some ghost rt711-sdca chip, and the sound didn't work either.
> 7.2.x, there were some topology problems or something, apparently that
> was fixed in the tree.
> 

Not one I have seen before, could you re-try 7.3 but with this
patch added:

commit e0cb731652a1bebf962086f17d1b7c9d060cb7d6
soundwire: dmi-quirks: Disable ghost rt711 on Lenovo Yoga Slim 7

That should fix the ghost rt711 problem and would be good to see
if this is a regression. Pretty sure it is but probably makes
sense to confirm first.

Thanks,
Charles

Re: NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

[Charles Keepax]

On Wed, Nov 11, 2026 at 10:20:03AM +0000, Charles Keepax wrote:
> On Tue, Nov 10, 2026 at 01:30:52PM +0100, Krzysztof Hałasa wrote:
> > I'm trying to use some audio on a certain new laptop:
> > DMI: LENOVO 83R0/LNVNB161216, BIOS UCCN16WW 08/07/2026. Aka Yoga 7 Slim
> > 14ILL11 or something like that. Also LENOVO_MT_83R0_BU_idea_FM_Yoga
> > Slim 7 14ILL11.
> > Linux version 7.4.0-rc2+
> > Ubuntu 26.04.01 LTS.
> > Kernel config is copied from Ubuntu 26.04.01 LTS test kernel.
> > Lots of ACPI errors in dmesg.
> > 
> > Tried 7.3.something first, no NULL ptr dereferences, but it tried to
> > talk with some ghost rt711-sdca chip, and the sound didn't work either.
> > 7.2.x, there were some topology problems or something, apparently that
> > was fixed in the tree.
> 
> Not one I have seen before, could you re-try 7.3 but with this
> patch added:
> 
> commit e0cb731652a1bebf962086f17d1b7c9d060cb7d6
> soundwire: dmi-quirks: Disable ghost rt711 on Lenovo Yoga Slim 7
> 
> That should fix the ghost rt711 problem and would be good to see
> if this is a regression. Pretty sure it is but probably makes
> sense to confirm first.

Having a look around, I also found this patch:

https://lore.kernel.org/all/20261109102536.357134-1-ghidoliemanuele@gmail.com/

Which does sound like it fixes something that sounds very similar
to this problem. So trying that patch on top of v7.4-rc2 is also
probably a good idea.

Thanks,
Charles

Re: NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

[Krzysztof Hałasa]

Charles, Richard,

Charles Keepax <ckeepax@opensource.cirrus.com> writes:

> Having a look around, I also found this patch:
>
> https://lore.kernel.org/all/20261109102536.357134-1-ghidoliemanuele@gmail.com/

Applied it over latest 7.4.0-rc2+. Also installed
linux-firmware-misc_20260915.git1522c78a-0ubuntu1_all.deb as their LTS
version lacks *17aa383c* files.

The NULL ptr dereference is gone, but

$ cat /proc/asound/cards
 0 [sofsoundwire   ]: sof-soundwire - sof-soundwire
                      LENOVO-83R0-YogaSlim714ILL11-LNVNB161216

$ cat /proc/asound/pcm
00-02: Speaker (*) :  : playback 1
00-05: HDMI1 (*) : HDMI 1 : playback 1
00-06: HDMI2 (*) : HDMI 2 : playback 1
00-07: HDMI3 (*) : HDMI 3 : playback 1
00-10: DMIC Raw (*) :  : capture 1

and:
sof-audio-pci-intel-lnl 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [xe])
sof-audio-pci-intel-lnl 0000:00:1f.3: use msi interrupt mode
sof-audio-pci-intel-lnl 0000:00:1f.3: No SoundWire machine driver found for the ACPI-reported configuration:
sof-audio-pci-intel-lnl 0000:00:1f.3: link 0 mfg_id 0x01fa part_id 0x4243 version 0x3
sof-audio-pci-intel-lnl 0000:00:1f.3: Use SoundWire default machine driver with function topologies
sof-audio-pci-intel-lnl 0000:00:1f.3: hda codecs found, mask 4
sof-audio-pci-intel-lnl 0000:00:1f.3: NHLT device BT(0) detected, ssp_mask 0x4
sof-audio-pci-intel-lnl 0000:00:1f.3: BT link detected in NHLT tables: 0x4
sof-audio-pci-intel-lnl 0000:00:1f.3: DMICs detected in NHLT tables: 4
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4/lnl/sof-lnl.ri, sha256: e72726da2a91c7869e37ec02d280a4348c5600d25d158c2bfc1018fc6ef5a8b1
sof-audio-pci-intel-lnl 0000:00:1f.3: Firmware paths/files for ipc type 1:
sof-audio-pci-intel-lnl 0000:00:1f.3:  Firmware file:     intel/sof-ipc4/lnl/sof-lnl.ri
sof-audio-pci-intel-lnl 0000:00:1f.3:  Firmware lib path: intel/sof-ipc4-lib/lnl
sof-audio-pci-intel-lnl 0000:00:1f.3:  Topology file:     function topologies
cs42l43 sdw:0:0:01fa:4243:01: devid: 0x042a43, rev: 0xa1, otp: 0x03
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4/lnl/sof-lnl.ri, sha256: e72726da2a91c7869e37ec02d280a4348c5600d25d158c2bfc1018fc6ef5a8b1
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded firmware library: ADSPFW, version: 2.14.1.1
cs42l43 sdw:0:0:01fa:4243:01: Loaded FW: cs42l43.bin, sha256: 8708742e09d2d392d8e2731f9ba06fdb73486362e4df576c0b32c34b1cf825ce
Adding alias for supply vdd-amp,(null) -> vdd-amp,sdw:0:0:01fa:4243:01
xe 0000:00:02.0: [drm] Tile0: GT1: found GSC cv104.1.0
cs35l56_spi_probe
cs35l56_common_probe
cs35l56_common_probe: about to call cs35l56_init()
cs35l56 spi-cs35l56-left: Cirrus Logic CS35L56 Rev B0 OTP3 fw:3.4.4 (patched=0)
sof-audio-pci-intel-lnl 0000:00:1f.3: Booted firmware version: 2.14.1.1
cs35l56_common_probe: about to call cs35l56_component_register()
cs35l56_component_register
cs35l56_spi_probe
cs35l56_common_probe
cs35l56_common_probe: about to call cs35l56_init()
cs35l56 spi-cs35l56-right: Cirrus Logic CS35L56 Rev B0 OTP3 fw:3.4.4 (patched=0)
cs35l56_common_probe: about to call cs35l56_component_register()
cs35l56_component_register
sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-sdca-1amp-id2.tplg, sha256: b92f8736b0b3557c4030a3a82cd31d47a244589fa3b91ad8b3d4c469ebba27a7
sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-lnl-dmic-4ch-id3.tplg, sha256: 79bd0bb781e8e30d5594a10d7c37825fc4356b2ac63d5d444c2e485b23ccf8f5
sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-hdmi-pcm5-id5.tplg, sha256: fe798c5e0e927b7bb68349a21b50114b1832254a6f851c2e71a398710970273a
sof_sdw sof_sdw: Failed to open topology file: intel/sof-ipc4-tplg/sof-lnl-ssp2-bt-id8.tplg, you might need to
sof_sdw sof_sdw: download it from https://github.com/thesofproject/sof-bin/
sof-audio-pci-intel-lnl 0000:00:1f.3: Using function topologies instead intel/sof-ipc4-tplg/sof-lnl-dummy-4ch.tplg
sof-audio-pci-intel-lnl 0000:00:1f.3: loading topology 0: intel/sof-ipc4-tplg/sof-sdca-1amp-id2.tplg
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4-tplg/sof-sdca-1amp-id2.tplg, sha256: b92f8736b0b3557c4030a3a82cd31d47a244589fa3b91ad8b3d4c469ebba27a7
sof-audio-pci-intel-lnl 0000:00:1f.3: Topology: ABI 3:29:1 Kernel ABI 3:23:1
cs35l56 spi-cs35l56-right: Loaded FW: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw, sha256: 01ea4865a3e85fe68a7021b9bf682541112c026a394b8355138e4b246faf0158
sof_sdw sof_sdw: ASoC: Parent card not yet available, widget card binding deferred
sof-audio-pci-intel-lnl 0000:00:1f.3: loading topology 1: intel/sof-ipc4-tplg/sof-lnl-dmic-4ch-id3.tplg
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4-tplg/sof-lnl-dmic-4ch-id3.tplg, sha256: 79bd0bb781e8e30d5594a10d7c37825fc4356b2ac63d5d444c2e485b23ccf8f5
sof-audio-pci-intel-lnl 0000:00:1f.3: Topology: ABI 3:29:1 Kernel ABI 3:23:1
sof_sdw sof_sdw: ASoC: Parent card not yet available, widget card binding deferred
sof-audio-pci-intel-lnl 0000:00:1f.3: loading topology 2: intel/sof-ipc4-tplg/sof-hdmi-pcm5-id5.tplg
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4-tplg/sof-hdmi-pcm5-id5.tplg, sha256: fe798c5e0e927b7bb68349a21b50114b1832254a6f851c2e71a398710970273a
sof-audio-pci-intel-lnl 0000:00:1f.3: Topology: ABI 3:29:1 Kernel ABI 3:23:1
cs35l56 spi-cs35l56-right: Loaded FW: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0-ampr.bin, sha256: 2aa99330b228d19dc65d98fc2587e3ec9330833a94494a53fbae8c5e35df80c5
cs35l56 spi-cs35l56-right: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw: format 3 timestamp 0x686474f4
cs35l56 spi-cs35l56-right: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw: Tue 01 Jul 2025 18:53:24 Central Daylight Time
sof_sdw sof_sdw: ASoC: Parent card not yet available, widget card binding deferred
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded FW: intel/sof-ipc4-lib/lnl/B36EE4DA-006F-47F9-A06D-FECBE2D8B6CE.bin, sha256: bd7a59d37802d8acf6bc197c7004b6b25567c0cf955370089e86ada122373781
sof-audio-pci-intel-lnl 0000:00:1f.3: Loaded firmware library: ADSPFW, version: 2.14.1.1
cs35l56 spi-cs35l56-left: Loaded FW: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw, sha256: 01ea4865a3e85fe68a7021b9bf682541112c026a394b8355138e4b246faf0158
cs35l56 spi-cs35l56-left: Loaded FW: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0-ampl.bin, sha256: a79325f6a87d30817625e36a491c6b4dc3dc90e9b4fbe6b45fc774fa759972c9
cs35l56 spi-cs35l56-left: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw: format 3 timestamp 0x686474f4
cs35l56 spi-cs35l56-left: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0.wmfw: Tue 01 Jul 2025 18:53:24 Central Daylight Time
snd_soc_card_get_kcontrol(): name: AMPL Speaker Volume
cs35l56 spi-cs35l56-right: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.13.3, 41 algorithms
cs35l56 spi-cs35l56-right: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0-ampr.bin (v1): v3.13.3
cs35l56 spi-cs35l56-right: DSP1: Misc: C:\Cirrus\Project\Lenovo_Slim7_14_Gen11_LLS7L\Smart_PA_Tuning\Initial_Tuning\Version1.0_Remove_CF\Lo
cs35l56 spi-cs35l56-left: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.13.3, 41 algorithms
cs35l56 spi-cs35l56-left: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa383c-spkid0-ampl.bin (v1): v3.13.3
cs35l56 spi-cs35l56-left: DSP1: Misc: C:\Cirrus\Project\Lenovo_Slim7_14_Gen11_LLS7L\Smart_PA_Tuning\Initial_Tuning\Version1.0_Remove_CF\Lo
cs35l56 spi-cs35l56-right: Calibration applied
cs35l56 spi-cs35l56-right: Tuning PID: 0x383c, SID: 0x1, TID: 0x1a7bf2
cs35l56 spi-cs35l56-left: Calibration applied
cs35l56 spi-cs35l56-left: Tuning PID: 0x383c, SID: 0x0, TID: 0xbed7ef
snd_soc_card_get_kcontrol(): name: AMPR Speaker Volume
snd_soc_card_get_kcontrol(): name: cs42l43 Speaker Digital Volume
sof_sdw sof_sdw: Setting CS42L43 Speaker volume limit to 128
sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no PCM in topology for HDMI converter 3

Perhaps this? What could that mean?
ASoC: Parent card not yet available, widget card binding deferred
-- 
Krzysztof "Chris" Hałasa

Łukasiewicz Research Network
Industrial Research Institute for Automation and Measurements PIAP

Al. Jerozolimskie 202, 02-486 Warsaw, Poland

Re: NULL ptr dereference in cs42l43/cs35l56 on Lenovo Yoga 7 Slim laptop

[Charles Keepax]

On Thu, Nov 12, 2026 at 02:20:31PM +0100, Krzysztof Hałasa wrote:
> Charles Keepax <ckeepax@opensource.cirrus.com> writes:
> sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-sdca-1amp-id2.tplg, sha256: b92f8736b0b3557c4030a3a82cd31d47a244589fa3b91ad8b3d4c469ebba27a7
> sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-lnl-dmic-4ch-id3.tplg, sha256: 79bd0bb781e8e30d5594a10d7c37825fc4356b2ac63d5d444c2e485b23ccf8f5
> sof_sdw sof_sdw: Loaded FW: intel/sof-ipc4-tplg/sof-hdmi-pcm5-id5.tplg, sha256: fe798c5e0e927b7bb68349a21b50114b1832254a6f851c2e71a398710970273a
> sof_sdw sof_sdw: Failed to open topology file: intel/sof-ipc4-tplg/sof-lnl-ssp2-bt-id8.tplg, you might need to
> sof_sdw sof_sdw: download it from https://github.com/thesofproject/sof-bin/
> 
> Perhaps this? What could that mean?
> ASoC: Parent card not yet available, widget card binding deferred

I suspect it is failing because of that topology file that
failed. Such a file doesn't appear to exist in the sof repo that
I can see. I think the best next step here would be to get Intel
involved, probably the best would be to open a ticket on the sof
GitHub:

https://github.com/thesofproject/sof/issues

If you could CC myself on that as well. If possible it would
still be worth trying 7.3 as well. In theory this laptop was
confirmed as working which does suggest there is perhaps a second
regression going on here:

https://github.com/thesofproject/linux/issues/5948

Thanks,
Charles