On 03/02/2017 04:48 PM, Andrey Konovalov wrote:
> Introduce get_shadow_bug_type() function, which determines bug type
> based on the shadow value for a particular kernel address.
> Introduce get_wild_bug_type() function, which determines bug type
> for addresses which don't have a corresponding shadow value.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
> ---
> mm/kasan/report.c | 40 ++++++++++++++++++++++++++++++----------
> 1 file changed, 30 insertions(+), 10 deletions(-)
>
> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
> index f479365530b6..2790b4cadfa3 100644
> --- a/mm/kasan/report.c
> +++ b/mm/kasan/report.c
> @@ -49,7 +49,13 @@ static const void *find_first_bad_addr(const void *addr, size_t size)
> return first_bad_addr;
> }
>
> -static void print_error_description(struct kasan_access_info *info)
> +static bool addr_has_shadow(struct kasan_access_info *info)
> +{
> + return (info->access_addr >=
> + kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
> +}
> +
> +static const char *get_shadow_bug_type(struct kasan_access_info *info)
> {
> const char *bug_type = "unknown-crash";
> u8 *shadow_addr;
> @@ -96,6 +102,27 @@ static void print_error_description(struct kasan_access_info *info)
> break;
> }
>
> + return bug_type;
> +}
> +
> +const char *get_wild_bug_type(struct kasan_access_info *info)
static
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