Re: [PATCH] kunit: tool: Force the use of the 'tty' console for UML

On Mon, Dec 21, 2020 at 11:39 PM David Gow davidgow@google.com wrote:

kunit_tool relies on the UML console outputting printk() output to the tty in order to get results. Since the default console driver could change, pass 'console=tty' to the kernel.

This is triggered by a change[1] to use ttynull as a fallback console driver which -- by chance or by design -- seems to have changed the default console output on UML, breaking kunit_tool. While this may be fixed, we should be less fragile to such changes in the default.

Signed-off-by: David Gow davidgow@google.com Fixes: 757055ae8ded ("init/console: Use ttynull as a fallback when there is no console")

Acked-by: Brendan Higgins brendanhiggins@google.com

Thanks for taking care of this!