Bug 214201

Summary: kernel hang during reboot when cmdline include a non-exist console device
Product: Platform Specific/Hardware Reporter: James Wang (jnwang)
Component: x86-64Assignee: platform_x86_64 (platform_x86_64)
Status: NEW ---    
Severity: blocking CC: huqiqiao, torvalds, xiehuanjun
Priority: P1    
Hardware: Intel   
OS: Linux   
Kernel Version: 5.13.13 Subsystem:
Regression: No Bisected commit-id:

Description James Wang 2021-08-27 15:48:37 UTC 
cmdline include the following parameter

console=ttyUSB0,115200

but my laptop doesn't have this device. Kernel can boot up!

But it can't reboot.

When reboot， the capslock key of thinkpad x1 starts blinking。
Comment 1 GeorgeQQHu 2021-09-03 02:00:49 UTC 

Hi，pls check your .config, check if CONFIG_USB_SERIAL=m, pls change it to CONFIG_USB_SERIAL=y and try?
Comment 2 GeorgeQQHu 2021-09-03 04:02:05 UTC 
(In reply to GeorgeQQHu from comment #1)
> 
> Hi，pls check your .config, check if CONFIG_USB_SERIAL=m, pls change it to
> CONFIG_USB_SERIAL=y, 

for my LENOVO ZhaoYang K4e-IT laptop,I need change CONFIG_USB_SERIAL_PL2303=m to CONFIG_USB_SERIAL_PL2303=y.