* next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
@ 2025-10-16 10:44 Naresh Kamboju
2025-10-16 10:52 ` Naresh Kamboju
0 siblings, 1 reply; 4+ messages in thread
From: Naresh Kamboju @ 2025-10-16 10:44 UTC (permalink / raw)
To: dri-devel, open list, lkft-triage, Linux Regressions
Cc: Luca Ceresoli, Dmitry Baryshkov, Simona Vetter, David Airlie,
Maxime Ripard, Arnd Bergmann, Dan Carpenter, Anders Roxell,
Ben Copeland
While booting and loading kernel modules on dragonboard 410c board
with Linux next
kernel next-20251014 and next-20251015 the following crash noticed,
First seen on next-20251014
Good: next-20251013
Bad: next-20251014
Regression Analysis:
- New regression? yes
- Reproducibility? yes
Boot regressions: next-20251014: Internal error: Oops:
drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
The kernel modules are not built with debug_info and could not find
the line number.
### Boot
[ 9.830602] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000098
[ 9.841379] coresight-cpu-debug 856000.debug: Coresight debug-CPU3
initialized
[ 9.843514] Mem abort info:
[ 9.843523] ESR = 0x0000000096000004
[ 9.843528] EC = 0x25: DABT (current EL), IL = 32 bits
[ 9.843535] SET = 0, FnV = 0
[ 9.843539] EA = 0, S1PTW = 0
[ 9.843543] FSC = 0x04: level 0 translation fault
[ 9.843547] Data abort info:
[ 9.843550] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 9.843554] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 9.903238] usb 1-1.2: new high-speed USB device number 3 using ci_hdrc
[ 9.908692] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 9.908700] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000834a2000
[ 9.908708] [0000000000000098] pgd=0000000000000000, p4d=0000000000000000
[ 9.951360] Internal error: Oops: 0000000096000004 [#1] SMP
[ 9.958091] Modules linked in: coresight_cpu_debug qcom_wcnss_pil
coresight_stm coresight_tmc stm_core coresight_tpiu coresight_cti
coresight_replicator coresight_funnel snd_soc_lpass_apq8016 coresight
snd_soc_lpass_cpu msm adv7511 snd_soc_lpass_platform
snd_soc_msm8916_digital snd_soc_msm8916_analog snd_soc_apq8016_sbc
snd_soc_qcom_common qcom_camss snd_soc_core snd_pcm_dmaengine
llcc_qcom snd_compress venus_core qrtr snd_pcm videobuf2_dma_sg
ubwc_config qcom_spmi_temp_alarm qcom_pon v4l2_fwnode rtc_pm8xxx
qcom_q6v5_mss ocmem snd_timer qcom_spmi_vadc drm_gpuvm v4l2_mem2mem
v4l2_async qcom_pil_info snd qcom_vadc_common drm_exec qcom_q6v5
videobuf2_v4l2 gpu_sched qcom_sysmon soundcore drm_dp_aux_bus
qcom_common videodev qcom_glink_smem drm_display_helper mdt_loader
videobuf2_memops qmi_helpers qnoc_msm8916 qcom_stats qcom_rng cec
videobuf2_common mc drm_client_lib socinfo phy_qcom_usb_hs rpmsg_ctrl
rpmsg_char display_connector ramoops rmtfs_mem drm_kms_helper
reed_solomon fuse drm backlight ipv6
[ 10.029607] CPU: 1 UID: 0 PID: 87 Comm: kworker/u16:3 Not tainted
6.18.0-rc1-next-20251015 #1 PREEMPT
[ 10.051760] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[ 10.060957] Workqueue: events_unbound deferred_probe_work_func
[ 10.067812] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 10.073455] pc : drm_bridge_connector_hdmi_cec_init+0xc/0x3c
drm_display_helper
[ 10.080320] lr : drmm_connector_hdmi_cec_register+0x104/0x1b0
drm_display_helper
[ 10.087958] sp : ffff800082fe3640
[ 10.091389] ci_hdrc ci_hdrc.0: remove, state 1
[ 10.095399] x29: ffff800082fe3690 x28: 0000000000000001 x27: ffff00000aa97610
[ 10.095414] x26: ffff00000aa97610 x25: 0000000000000008 x24: ffff80007ab7a0a8
[ 10.095427] x23: 0000000000000003 x22: ffff0000049dd420
[ 10.098816] usb usb1: USB disconnect, device number 1
[ 10.103130] x21: ffff000004245e10
[ 10.103138] x20: ffff00000aa59000 x19: ffff00000aa4c080 x18: 00000002425c8888
[ 10.103150] x17: 0000000000000400 x16: 00000002425c8888 x15: 0000000000000553
[ 10.110393] usb 1-1: USB disconnect, device number 2
[ 10.117450]
[ 10.117454] x14: 00000000023660af x13: 0000000000000000 x12: 0000000000000000
[ 10.117466] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
[ 10.117478] x8 : ffff80007ab4f3a0 x7 : 000000001e237337
[ 10.126995] usb 1-1.2: USB disconnect, device number 3
[ 10.127691] x6 : 000000001e237337
[ 10.176293] x5 : ffff8000826c5974 x4 : ffff00003fc734f0 x3 : 0000000000154401
[ 10.179619] x2 : 0000000000000003 x1 : ffff00000aa4c080 x0 : 0000000000000000
[ 10.186823] Call trace:
[ 10.193932] drm_bridge_connector_hdmi_cec_init+0xc/0x3c
drm_display_helper (P)
[ 10.196204] drm_bridge_connector_init+0x580/0x64c drm_display_helper
[ 10.203839] msm_dsi_manager_connector_init+0xa0/0xd0 msm
[ 10.210260] msm_dsi_modeset_init+0x70/0xb4 msm
[ 10.215814] mdp5_kms_init+0xbec/0xe24 msm
[ 10.220674] msm_drm_kms_init+0x80/0x220 msm
[ 10.225018] msm_drm_init+0x1a8/0x1e0 msm
[ 10.229268] msm_drm_bind+0x34/0x40 msm
[ 10.233348] try_to_bring_up_aggregate_device
(/builds/linux/drivers/base/component.c:249)
[ 10.237516] __component_add (/builds/linux/drivers/base/component.c:270)
[ 10.242894] component_add (/builds/linux/drivers/base/component.c:807)
[ 10.246538] dsi_dev_attach+0x1c/0x28 msm
[ 10.250363] dsi_host_attach+0x64/0x98 msm
[ 10.254270] devm_mipi_dsi_attach
(/builds/linux/drivers/gpu/drm/drm_mipi_dsi.c:384)
[ 10.258779] adv7533_attach_dsi+0xac/0xf4 adv7511
[ 10.262708] adv7511_probe+0x700/0x75c adv7511
[ 10.262733] i2c_device_probe (/builds/linux/drivers/i2c/i2c-core-base.c:604)
[ 10.262749] really_probe (/builds/linux/drivers/base/dd.c:583)
[ 10.276313] __driver_probe_device (/builds/linux/drivers/base/dd.c:?)
[ 10.279962] driver_probe_device (/builds/linux/drivers/base/dd.c:831)
[ 10.284300] __device_attach_driver (/builds/linux/drivers/base/dd.c:960)
[ 10.288207] bus_for_each_drv (/builds/linux/drivers/base/bus.c:462)
[ 10.292719] __device_attach (/builds/linux/drivers/base/dd.c:?)
[ 10.296887] device_initial_probe (/builds/linux/drivers/base/dd.c:1081)
[ 10.300445] bus_probe_device (/builds/linux/drivers/base/bus.c:539)
[ 10.304613] deferred_probe_work_func (/builds/linux/drivers/base/dd.c:125)
[ 10.308780] process_scheduled_works (/builds/linux/kernel/workqueue.c:3274)
[ 10.313035] worker_thread (/builds/linux/include/linux/list.h:381
/builds/linux/kernel/workqueue.c:952
/builds/linux/kernel/workqueue.c:3428)
[ 10.317893] kthread (/builds/linux/kernel/kthread.c:465)
[ 10.321451] ret_from_fork (/builds/linux/arch/arm64/kernel/entry.S:861)
[ 10.324845] Code: d65f03c0 d503245f aa0003e1 f9449400 (f9404c08)
All code
========
0: d65f03c0 ret
4: d503245f bti c
8: aa0003e1 mov x1, x0
c: f9449400 ldr x0, [x0, #2344]
10:* f9404c08 ldr x8, [x0, #152] <-- trapping instruction
Code starting with the faulting instruction
===========================================
0: f9404c08 ldr x8, [x0, #152]
[ 10.328407] ---[ end trace 0000000000000000 ]---
## Source
* Kernel version: 6.18.0-rc1-next-20251015
* Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git commit: 1fdbb3ff1233e204e26f9f6821ae9c125a055229
* Architectures: arm64 db410c
* Toolchains: gcc-13 and clang-21
* Kconfigs: defconfig+lkftconfig
## Build
* Test log: https://lkft.validation.linaro.org/scheduler/job/8493594#L2966
* Test details:
https://regressions.linaro.org/lkft/linux-next-master/next-20251015/log-parser-test/oops-Oops_SMP-ad06dc06/
* Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/346UvyvsORKa7GkJXNgOdZm4Jc9
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/346UvE5jXrKAGFTkdkd35Z9HsUM/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/346UvE5jXrKAGFTkdkd35Z9HsUM/config
--
Linaro LKFT
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
2025-10-16 10:44 next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register Naresh Kamboju
@ 2025-10-16 10:52 ` Naresh Kamboju
2025-10-16 13:36 ` Luca Ceresoli
0 siblings, 1 reply; 4+ messages in thread
From: Naresh Kamboju @ 2025-10-16 10:52 UTC (permalink / raw)
To: dri-devel, open list, lkft-triage, Linux Regressions
Cc: Luca Ceresoli, Dmitry Baryshkov, Simona Vetter, David Airlie,
Maxime Ripard, Arnd Bergmann, Dan Carpenter, Anders Roxell,
Ben Copeland
On Thu, 16 Oct 2025 at 16:14, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> While booting and loading kernel modules on dragonboard 410c board
> with Linux next
> kernel next-20251014 and next-20251015 the following crash noticed,
>
> First seen on next-20251014
> Good: next-20251013
> Bad: next-20251014
>
> Regression Analysis:
> - New regression? yes
> - Reproducibility? yes
>
> Boot regressions: next-20251014: Internal error: Oops:
> drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
These three patches landed recently,
$ git log --oneline next-20251013..next-20251014
drivers/gpu/drm/display/drm_bridge_connector.c
2be300f9a0b6f drm/display: bridge_connector: get/put the stored bridges
d5c5b1de3e18b drm/display: bridge-connector: use
drm_for_each_bridge_in_chain_scoped()
c92f59bac0784 drm/display: bridge-connector: use scope-specific
variable for the bridge pointer
> The kernel modules are not built with debug_info and could not find
> the line number.
> ### Boot
> [ 9.830602] Unable to handle kernel NULL pointer dereference at
> virtual address 0000000000000098
> [ 9.841379] coresight-cpu-debug 856000.debug: Coresight debug-CPU3
> initialized
> [ 9.843514] Mem abort info:
> [ 9.843523] ESR = 0x0000000096000004
> [ 9.843528] EC = 0x25: DABT (current EL), IL = 32 bits
> [ 9.843535] SET = 0, FnV = 0
> [ 9.843539] EA = 0, S1PTW = 0
> [ 9.843543] FSC = 0x04: level 0 translation fault
> [ 9.843547] Data abort info:
> [ 9.843550] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
> [ 9.843554] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
> [ 9.903238] usb 1-1.2: new high-speed USB device number 3 using ci_hdrc
> [ 9.908692] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
> [ 9.908700] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000834a2000
> [ 9.908708] [0000000000000098] pgd=0000000000000000, p4d=0000000000000000
> [ 9.951360] Internal error: Oops: 0000000096000004 [#1] SMP
> [ 9.958091] Modules linked in: coresight_cpu_debug qcom_wcnss_pil
> coresight_stm coresight_tmc stm_core coresight_tpiu coresight_cti
> coresight_replicator coresight_funnel snd_soc_lpass_apq8016 coresight
> snd_soc_lpass_cpu msm adv7511 snd_soc_lpass_platform
> snd_soc_msm8916_digital snd_soc_msm8916_analog snd_soc_apq8016_sbc
> snd_soc_qcom_common qcom_camss snd_soc_core snd_pcm_dmaengine
> llcc_qcom snd_compress venus_core qrtr snd_pcm videobuf2_dma_sg
> ubwc_config qcom_spmi_temp_alarm qcom_pon v4l2_fwnode rtc_pm8xxx
> qcom_q6v5_mss ocmem snd_timer qcom_spmi_vadc drm_gpuvm v4l2_mem2mem
> v4l2_async qcom_pil_info snd qcom_vadc_common drm_exec qcom_q6v5
> videobuf2_v4l2 gpu_sched qcom_sysmon soundcore drm_dp_aux_bus
> qcom_common videodev qcom_glink_smem drm_display_helper mdt_loader
> videobuf2_memops qmi_helpers qnoc_msm8916 qcom_stats qcom_rng cec
> videobuf2_common mc drm_client_lib socinfo phy_qcom_usb_hs rpmsg_ctrl
> rpmsg_char display_connector ramoops rmtfs_mem drm_kms_helper
> reed_solomon fuse drm backlight ipv6
> [ 10.029607] CPU: 1 UID: 0 PID: 87 Comm: kworker/u16:3 Not tainted
> 6.18.0-rc1-next-20251015 #1 PREEMPT
> [ 10.051760] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
> [ 10.060957] Workqueue: events_unbound deferred_probe_work_func
> [ 10.067812] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 10.073455] pc : drm_bridge_connector_hdmi_cec_init+0xc/0x3c
> drm_display_helper
> [ 10.080320] lr : drmm_connector_hdmi_cec_register+0x104/0x1b0
> drm_display_helper
> [ 10.087958] sp : ffff800082fe3640
> [ 10.091389] ci_hdrc ci_hdrc.0: remove, state 1
> [ 10.095399] x29: ffff800082fe3690 x28: 0000000000000001 x27: ffff00000aa97610
> [ 10.095414] x26: ffff00000aa97610 x25: 0000000000000008 x24: ffff80007ab7a0a8
> [ 10.095427] x23: 0000000000000003 x22: ffff0000049dd420
> [ 10.098816] usb usb1: USB disconnect, device number 1
> [ 10.103130] x21: ffff000004245e10
> [ 10.103138] x20: ffff00000aa59000 x19: ffff00000aa4c080 x18: 00000002425c8888
> [ 10.103150] x17: 0000000000000400 x16: 00000002425c8888 x15: 0000000000000553
> [ 10.110393] usb 1-1: USB disconnect, device number 2
> [ 10.117450]
> [ 10.117454] x14: 00000000023660af x13: 0000000000000000 x12: 0000000000000000
> [ 10.117466] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
> [ 10.117478] x8 : ffff80007ab4f3a0 x7 : 000000001e237337
> [ 10.126995] usb 1-1.2: USB disconnect, device number 3
> [ 10.127691] x6 : 000000001e237337
> [ 10.176293] x5 : ffff8000826c5974 x4 : ffff00003fc734f0 x3 : 0000000000154401
> [ 10.179619] x2 : 0000000000000003 x1 : ffff00000aa4c080 x0 : 0000000000000000
> [ 10.186823] Call trace:
> [ 10.193932] drm_bridge_connector_hdmi_cec_init+0xc/0x3c
> drm_display_helper (P)
> [ 10.196204] drm_bridge_connector_init+0x580/0x64c drm_display_helper
> [ 10.203839] msm_dsi_manager_connector_init+0xa0/0xd0 msm
> [ 10.210260] msm_dsi_modeset_init+0x70/0xb4 msm
> [ 10.215814] mdp5_kms_init+0xbec/0xe24 msm
> [ 10.220674] msm_drm_kms_init+0x80/0x220 msm
> [ 10.225018] msm_drm_init+0x1a8/0x1e0 msm
> [ 10.229268] msm_drm_bind+0x34/0x40 msm
> [ 10.233348] try_to_bring_up_aggregate_device
> (/builds/linux/drivers/base/component.c:249)
> [ 10.237516] __component_add (/builds/linux/drivers/base/component.c:270)
> [ 10.242894] component_add (/builds/linux/drivers/base/component.c:807)
> [ 10.246538] dsi_dev_attach+0x1c/0x28 msm
> [ 10.250363] dsi_host_attach+0x64/0x98 msm
> [ 10.254270] devm_mipi_dsi_attach
> (/builds/linux/drivers/gpu/drm/drm_mipi_dsi.c:384)
> [ 10.258779] adv7533_attach_dsi+0xac/0xf4 adv7511
> [ 10.262708] adv7511_probe+0x700/0x75c adv7511
> [ 10.262733] i2c_device_probe (/builds/linux/drivers/i2c/i2c-core-base.c:604)
> [ 10.262749] really_probe (/builds/linux/drivers/base/dd.c:583)
> [ 10.276313] __driver_probe_device (/builds/linux/drivers/base/dd.c:?)
> [ 10.279962] driver_probe_device (/builds/linux/drivers/base/dd.c:831)
> [ 10.284300] __device_attach_driver (/builds/linux/drivers/base/dd.c:960)
> [ 10.288207] bus_for_each_drv (/builds/linux/drivers/base/bus.c:462)
> [ 10.292719] __device_attach (/builds/linux/drivers/base/dd.c:?)
> [ 10.296887] device_initial_probe (/builds/linux/drivers/base/dd.c:1081)
> [ 10.300445] bus_probe_device (/builds/linux/drivers/base/bus.c:539)
> [ 10.304613] deferred_probe_work_func (/builds/linux/drivers/base/dd.c:125)
> [ 10.308780] process_scheduled_works (/builds/linux/kernel/workqueue.c:3274)
> [ 10.313035] worker_thread (/builds/linux/include/linux/list.h:381
> /builds/linux/kernel/workqueue.c:952
> /builds/linux/kernel/workqueue.c:3428)
> [ 10.317893] kthread (/builds/linux/kernel/kthread.c:465)
> [ 10.321451] ret_from_fork (/builds/linux/arch/arm64/kernel/entry.S:861)
> [ 10.324845] Code: d65f03c0 d503245f aa0003e1 f9449400 (f9404c08)
> All code
> ========
> 0: d65f03c0 ret
> 4: d503245f bti c
> 8: aa0003e1 mov x1, x0
> c: f9449400 ldr x0, [x0, #2344]
> 10:* f9404c08 ldr x8, [x0, #152] <-- trapping instruction
>
> Code starting with the faulting instruction
> ===========================================
> 0: f9404c08 ldr x8, [x0, #152]
> [ 10.328407] ---[ end trace 0000000000000000 ]---
>
>
> ## Source
> * Kernel version: 6.18.0-rc1-next-20251015
> * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
> * Git commit: 1fdbb3ff1233e204e26f9f6821ae9c125a055229
> * Architectures: arm64 db410c
> * Toolchains: gcc-13 and clang-21
> * Kconfigs: defconfig+lkftconfig
>
> ## Build
> * Test log: https://lkft.validation.linaro.org/scheduler/job/8493594#L2966
> * Test details:
> https://regressions.linaro.org/lkft/linux-next-master/next-20251015/log-parser-test/oops-Oops_SMP-ad06dc06/
> * Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/346UvyvsORKa7GkJXNgOdZm4Jc9
> * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/346UvE5jXrKAGFTkdkd35Z9HsUM/
> * Kernel config:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/346UvE5jXrKAGFTkdkd35Z9HsUM/config
>
> --
> Linaro LKFT
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
2025-10-16 10:52 ` Naresh Kamboju
@ 2025-10-16 13:36 ` Luca Ceresoli
2025-10-17 16:21 ` Luca Ceresoli
0 siblings, 1 reply; 4+ messages in thread
From: Luca Ceresoli @ 2025-10-16 13:36 UTC (permalink / raw)
To: Naresh Kamboju, dri-devel, open list, lkft-triage,
Linux Regressions
Cc: Dmitry Baryshkov, Simona Vetter, David Airlie, Maxime Ripard,
Arnd Bergmann, Dan Carpenter, Anders Roxell, Ben Copeland
Hello Naresh,
On Thu Oct 16, 2025 at 12:52 PM CEST, Naresh Kamboju wrote:
> On Thu, 16 Oct 2025 at 16:14, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>>
>> While booting and loading kernel modules on dragonboard 410c board
>> with Linux next
>> kernel next-20251014 and next-20251015 the following crash noticed,
>>
>> First seen on next-20251014
>> Good: next-20251013
>> Bad: next-20251014
>>
>> Regression Analysis:
>> - New regression? yes
>> - Reproducibility? yes
>>
>> Boot regressions: next-20251014: Internal error: Oops:
>> drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
Thanks for the report.
This looks like the same issue reported here:
https://lore.kernel.org/all/336fbfdd-c424-490e-b5d1-8ee84043dc80@samsung.com/
I'm writing a fix right now, will send it today if all goes well.
> These three patches landed recently,
> $ git log --oneline next-20251013..next-20251014
> drivers/gpu/drm/display/drm_bridge_connector.c
> 2be300f9a0b6f drm/display: bridge_connector: get/put the stored bridges
^ This is the commit introducing the bug.
Best regards,
Luca
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
2025-10-16 13:36 ` Luca Ceresoli
@ 2025-10-17 16:21 ` Luca Ceresoli
0 siblings, 0 replies; 4+ messages in thread
From: Luca Ceresoli @ 2025-10-17 16:21 UTC (permalink / raw)
To: Luca Ceresoli, Naresh Kamboju, dri-devel, open list, lkft-triage,
Linux Regressions
Cc: Dmitry Baryshkov, Simona Vetter, David Airlie, Maxime Ripard,
Arnd Bergmann, Dan Carpenter, Anders Roxell, Ben Copeland
Hello,
On Thu Oct 16, 2025 at 3:36 PM CEST, Luca Ceresoli wrote:
> Hello Naresh,
>
> On Thu Oct 16, 2025 at 12:52 PM CEST, Naresh Kamboju wrote:
>> On Thu, 16 Oct 2025 at 16:14, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>>>
>>> While booting and loading kernel modules on dragonboard 410c board
>>> with Linux next
>>> kernel next-20251014 and next-20251015 the following crash noticed,
>>>
>>> First seen on next-20251014
>>> Good: next-20251013
>>> Bad: next-20251014
>>>
>>> Regression Analysis:
>>> - New regression? yes
>>> - Reproducibility? yes
>>>
>>> Boot regressions: next-20251014: Internal error: Oops:
>>> drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register
>
> Thanks for the report.
>
> This looks like the same issue reported here:
> https://lore.kernel.org/all/336fbfdd-c424-490e-b5d1-8ee84043dc80@samsung.com/
>
> I'm writing a fix right now, will send it today if all goes well.
Here's the fixed version:
https://lore.kernel.org/lkml/20251017-drm-bridge-alloc-getput-bridge-connector-fix-hdmi_cec-v2-0-667abf6d47c0@bootlin.com/
Luca
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 4+ messages in thread
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Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-10-16 10:44 next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register Naresh Kamboju
2025-10-16 10:52 ` Naresh Kamboju
2025-10-16 13:36 ` Luca Ceresoli
2025-10-17 16:21 ` Luca Ceresoli
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