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Subject[PATCH] octeontx2-af: Add array index check
Date

Hi,

> In rvu_map_cgx_lmac_pf() the 'iter', which is used as an array index, can
> reach value (up to 14) that exceed the size (MAX_LMAC_COUNT = 8) of the
> array.
> Fix this bug by adding 'iter' value check.
>
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
>

Since it is a fix, please add "net" to the subject.

Thanks,
Hariprasad k
> Fixes: 91c6945ea1f9 ("octeontx2-af: cn10k: Add RPM MAC support")
> Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
> ---
> drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
> index 72e060cf6b61..e9bf9231b018 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
> @@ -160,6 +160,8 @@ static int rvu_map_cgx_lmac_pf(struct rvu *rvu)
> continue;
> lmac_bmap = cgx_get_lmac_bmap(rvu_cgx_pdata(cgx, rvu));
> for_each_set_bit(iter, &lmac_bmap, rvu->hw->lmac_per_cgx)
> {
> + if (iter >= MAX_LMAC_COUNT)
> + continue;
> lmac = cgx_get_lmacid(rvu_cgx_pdata(cgx, rvu),
> iter);
> rvu->pf2cgxlmac_map[pf] = cgxlmac_id_to_bmap(cgx,
> lmac);
> --
> 2.30.2


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