Re: [PATCH] docs/devel/testing/fuzzing: Note that you can get qtest to read from a file

[Fabiano Rosas <farosas@suse.de>]

Peter Maydell <peter.maydell@linaro.org> writes:

> It is possible to get qtest to read fuzzer reproducers from a file
> rather than directly from stdio; this is useful when you want to run
> QEMU under gdb to debug the failure.  Document how to do this, which
> was previously only written down in the commit message for
> 5b18a6bf44b9 ("chardev: Allow setting file chardev input file on the
> command line").
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> I got bored of looking up the commit message in the git log
> every time :-)
> ---
>  docs/devel/testing/fuzzing.rst | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/docs/devel/testing/fuzzing.rst b/docs/devel/testing/fuzzing.rst
> index c3ac084311b..c43f815f320 100644
> --- a/docs/devel/testing/fuzzing.rst
> +++ b/docs/devel/testing/fuzzing.rst
> @@ -263,6 +263,15 @@ generic-fuzz target.
>  
>  - Report the bug and send a patch with the C reproducer upstream
>  
> +QEMU can also read the reproducer directly from a file rather than
> +from standard input::
> +
> +    $QEMU_PATH $QEMU_ARGS -qtest chardev:repro \
> +      -chardev file,id=repro,path=/dev/null,input-path=/tmp/reproducer
> +
> +This is useful if you want to run QEMU under a debugger to investigate
> +the failure.
> +
>  Implementation Details / Fuzzer Lifecycle
>  -----------------------------------------

Reviewed-by: Fabiano Rosas <farosas@suse.de>