On Wed, Jan 31, 2024 at 11:24:25AM +0300, Dan Carpenter wrote:
> Check against ARRAY_SIZE() which is the number of elements instead of
> sizeof() which is the number of bytes. Otherwise we potentially read
> beyond the end of the phy_to_log_coh_st_map_mi300[] array.
>
> Fixes: 453f0ae79732 ("RAS/AMD/ATL: Add MI300 support")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> drivers/ras/amd/atl/denormalize.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/ras/amd/atl/denormalize.c b/drivers/ras/amd/atl/denormalize.c
> index d5d0e1fda159..49a900e066f1 100644
> --- a/drivers/ras/amd/atl/denormalize.c
> +++ b/drivers/ras/amd/atl/denormalize.c
> @@ -405,7 +405,7 @@ static const u16 phy_to_log_coh_st_map_mi300[] = {
>
> static u16 get_logical_coh_st_fabric_id_mi300(struct addr_ctx *ctx)
> {
> - if (ctx->inst_id >= sizeof(phy_to_log_coh_st_map_mi300)) {
> + if (ctx->inst_id >= ARRAY_SIZE(phy_to_log_coh_st_map_mi300)) {
> atl_debug(ctx, "Instance ID out of range");
> return ~0;
> }
> --
Applied, thanks.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
