OS 14 (>13) CP210x module causes whole OS to crash/stuck in panic loop

[aurimasniekis]

Describe the issue you are experiencing

I am experiencing an issue with several devices connected via USB that utilize CP2102 USB-to-Serial chips. Starting from driver version 13, the system encounters kernel panics after running for a couple of days. This leads to either a system shutdown or a panic loop that consumes all available CPU cycles. It feels like the issue might be related to an overflow or another problem within the driver.

What operating system image do you use?

ova (for Virtual Machines)

What version of Home Assistant Operating System is installed?

Home Assistant OS 14.0

Did the problem occur after upgrading the Operating System?

Yes

Hardware details

System Information

version	core-2024.12.4
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
user	root
virtualenv	false
python_version	3.13.0
os_name	Linux
os_version	6.6.63-haos
arch	x86_64
timezone	Asia/Tokyo
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	4999
Installed Version	2.0.1
Stage	running
Available Repositories	1490
Downloaded Repositories	4

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 14.0
update_channel	stable
supervisor_version	supervisor-2024.12.0
agent_version	1.6.0
docker_version	27.2.0
disk_total	294.6 GB
disk_used	10.1 GB
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization	vmware
board	ova
supervisor_api	ok
version_api	ok
installed_addons	Studio Code Server (5.17.3), Advanced SSH & Web Terminal (19.0.0), Zigbee2MQTT (1.41.0-1), Mosquitto broker (6.4.1), Get HACS (1.3.1), ESPHome Device Compiler (2024.11.3)

Dashboards

dashboards	2
resources	1
views	2
mode	storage

Recorder

oldest_recorder_run	December 7, 2024 at 10:27
current_recorder_run	December 18, 2024 at 14:32
estimated_db_size	27.61 MiB
database_engine	sqlite
database_version	3.45.3

Steps to reproduce the issue

Run any device using CP210x module.

Anything in the Supervisor logs that might be useful for us?

No system logs apart console output of machine captures the issue.

Anything in the Host logs that might be useful for us?

[40008.590817] cp210x ttyUSB0: usb_serial_generic_write_start - error submitting urb: -1
[96253.583194] cp210x ttyUSB0: usb_serial_generic_write_start - error submitting urb: -1
[96298.985488] stack segment: 0000 [#1] PREEMPT SMP PTI
[96298.986285] CPU: 1 PID: 71972 Comm: node Not tainted 6.6.63-haos #1
[96298.987181] Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.13989454.B64.1906190538 06/19/2019
[96298.988884] RIP: 0010:dma_pool_alloc+0x3b/0x1f0
[96298.989653] Code: f4 55 53 48 89 fb 48 83 ec 08 81 e6 00 04 00 00 75 68 4c 8d 73 10 4c 89 f7 e8 11 46 e1 00 48 8b 6b 18 48 89 c7 48 85 ed 74 57 <48> 8b 45 00 48 83 43 28 01 48 89 43 18 48 89 fe 4c 89 f7 e8 9d 46
[96298.992041] RSP: 0018:ffffc900027739d8 EFLAGS: 00010082
[96298.992867] RAX: 0000000000000046 RBX: ffff888100e64d00 RCX: ffff8880010421d8
[96298.993876] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000046
[96298.994873] RBP: ff7f8fff01042340 R08: ffff888001043700 R09: 0000000000000000
[96298.995876] R10: ffff888104ad7498 R11: ffff888104ad74b8 R12: 0000000000000820
[96298.996876] R13: ffffc90002773a80 R14: ffff888100e64d10 R15: 0000000000000000
[96298.997876] FS:  0000000000000000(0000) GS:ffff888237c40000(0000) knlGS:0000000000000000
[96298.998969] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[96298.999842] CR2: 000000c000ba0000 CR3: 00000001554b2003 CR4: 00000000001706e0
[96299.000875] Call Trace:
[96299.001440]  <TASK>
[96299.001967]  ? die+0x31/0x80
[96299.002578]  ? do_trap+0xd5/0x100
[96299.003212]  ? do_error_trap+0x65/0x90
[96299.003907]  ? exc_stack_segment+0x37/0x50
[96299.004631]  ? asm_exc_stack_segment+0x26/0x30
[96299.005388]  ? dma_pool_alloc+0x3b/0x1f0
[96299.006078]  ? dma_pool_alloc+0x2f/0x1f0
[96299.006761]  uhci_urb_enqueue+0x826/0xc40
[96299.007468]  usb_hcd_submit_urb+0xb4/0xa40
[96299.008174]  ? update_load_avg+0x77/0x710
[96299.008873]  ? dequeue_entity+0x120/0x3a0
[96299.009563]  ? __slab_free+0x73/0x2e0
[96299.010217]  ? __kmem_cache_alloc_node+0x18b/0x2f0
[96299.010975]  usb_start_wait_urb+0x85/0x110
[96299.011663]  usb_control_msg+0xea/0x150
[96299.012329]  cp210x_write_u16_reg+0x42/0x80 [cp210x]
[96299.013107]  cp210x_tiocmset_port+0xa3/0x140 [cp210x]
[96299.013898]  tty_port_shutdown+0x66/0x90
[96299.014581]  tty_port_close+0x2b/0x80
[96299.015221]  tty_release+0xde/0x4c0
[96299.015852]  __fput+0xe5/0x280
[96299.016433]  task_work_run+0x55/0x90
[96299.017052]  do_exit+0x35b/0xa90
[96299.017638]  ? futex_unqueue+0x37/0x60
[96299.018276]  do_group_exit+0x2c/0x80
[96299.018884]  get_signal+0xa43/0xa80
[96299.019482]  arch_do_signal_or_restart+0x39/0x270
[96299.020200]  exit_to_user_mode_prepare+0xbf/0x120
[96299.020918]  syscall_exit_to_user_mode+0x26/0x50
[96299.021621]  do_syscall_64+0x44/0x80
[96299.022219]  entry_SYSCALL_64_after_hwframe+0x78/0xe2
[96299.022957] RIP: 0033:0x7f1de3089992
[96299.023554] Code: Unable to access opcode bytes at 0x7f1de3089968.
[96299.024391] RSP: 002b:00007f1ddf58f8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
[96299.025364] RAX: fffffffffffffe00 RBX: 00000000000000ca RCX: 00007f1de3089992
[96299.026289] RDX: ffffffff80000000 RSI: 0000000000000080 RDI: 0000555da137e8a0
[96299.027217] RBP: 00007f1ddf58fb38 R08: 0000000000000000 R09: 0000000000000000
[96299.028131] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000080
[96299.029045] R13: 0000000000000000 R14: ffffffff80000000 R15: 00007f1ddf58fb38
[96299.029961]  </TASK>
[96299.030393] Modules linked in: bnep bluetooth ecdh_generic ecc nft_chain_nat xfrm_user nft_compat nf_tables vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock cfg80211 cp210x snd_hda_codec_generic ledtrig_audio sch_fq_codel snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core dmi_sysfs

System information

No response

Additional information

No response

[aurimasniekis]

As a test, I moved a single USB device to a separate VM running the latest Ubuntu Server OS with ser2net to check if it works. Perhaps the cp210x module has been fixed in the 6.11 kernel.

[aurimasniekis]

Five days have passed without any issues, so I believe it’s time to consider upgrading the module to the latest version.