Bug 214201 - kernel hang during reboot when cmdline include a non-exist console device
Summary: kernel hang during reboot when cmdline include a non-exist console device
Status: NEW
Alias: None
Product: Platform Specific/Hardware
Classification: Unclassified
Component: x86-64 (show other bugs)
Hardware: Intel Linux
: P1 blocking
Assignee: platform_x86_64@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-08-27 15:48 UTC by James Wang
Modified: 2021-09-03 04:02 UTC (History)
3 users (show)

See Also:
Kernel Version: 5.13.13
Subsystem:
Regression: No
Bisected commit-id:

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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.
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