[LTP] [PATCH] Add test for CVE 2022-4378

[pvorel]

Hi Martin,

> diff --git a/testcases/cve/cve-2022-4378.c 
> b/testcases/cve/cve-2022-4378.c
> new file mode 100644
> index 000000000..e1c5df325
> --- /dev/null
> +++ b/testcases/cve/cve-2022-4378.c
> @@ -0,0 +1,108 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (C) 2022 SUSE LLC <mdoucha@suse.cz>
> + */
> +
> +/*\
nit: you used /*\ docparse start comment, but without any [...] mark,
thus nothing shows in generated docs.
There should have been either normal C comment /* or docparse [...] 
mark.

Kind regards,
Petr

> + * CVE 2022-4378
> + *
> + * Check that writing several pages worth of whitespace into /proc/sys 
> files
> + * does not cause kernel stack overflow. Kernel bug fixed in:
> + *
> + * commit bce9332220bd677d83b19d21502776ad555a0e73
> + * Author: Linus Torvalds <torvalds@linux-foundation.org>
> + * Date:   Mon Dec 5 12:09:06 2022 -0800
> + *
> + * proc: proc_skip_spaces() shouldn't think it is working on C strings
> + */
...