Re: [PATCH] kasan: add support for kasan.fault=panic_on_write

[Alexander Potapenko]

On Wed, Jun 14, 2023 at 11:52 AM Marco Elver <elver@xxxxxxxxxx> wrote:
>
> KASAN's boot time kernel parameter 'kasan.fault=' currently supports
> 'report' and 'panic', which results in either only reporting bugs or
> also panicking on reports.
>
> However, some users may wish to have more control over when KASAN
> reports result in a kernel panic: in particular, KASAN reported invalid
> _writes_ are of special interest, because they have greater potential to
> corrupt random kernel memory or be more easily exploited.
>
> To panic on invalid writes only, introduce 'kasan.fault=panic_on_write',
> which allows users to choose to continue running on invalid reads, but
> panic only on invalid writes.
>
> Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>

Thanks!