[dpdk-dev] [PATCH v2] net/i40e: fix out of bounds read issue

Yang, Qiming qiming.yang at intel.com
Fri May 8 04:54:28 CEST 2020


Hi, Xiaolong
I reviewed that function, it need rework, not only this coverity issue, the logical was wrong.

Qiming

> -----Original Message-----
> From: Ye, Xiaolong <xiaolong.ye at intel.com>
> Sent: Friday, May 8, 2020 10:36
> To: Yang, Qiming <qiming.yang at intel.com>
> Cc: Di, ChenxuX <chenxux.di at intel.com>; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v2] net/i40e: fix out of bounds read issue
> 
> Hi, Qiming
> 
> On 05/08, Yang, Qiming wrote:
> >Nacked by: Qiming Yang <Qiming.yang at intel.com>
> 
> Could you post the reason why you nack this patch?
> 
> Thanks,
> Xiaolong
> 
> >
> >> -----Original Message-----
> >> From: dev <dev-bounces at dpdk.org> On Behalf Of Chenxu Di
> >> Sent: Thursday, May 7, 2020 17:50
> >> To: dev at dpdk.org
> >> Cc: Di, ChenxuX <chenxux.di at intel.com>
> >> Subject: [dpdk-dev] [PATCH v2] net/i40e: fix out of bounds read issue
> >>
> >> This patch fixes (out-of-bounds read) coverity issue.
> >>
> >> Coverity issue: 357699
> >> Coverity issue: 357694
> >> Fixes: feaae285b342 ("net/i40e: support hash configuration in RSS
> >> flow")
> >>
> >> Signed-off-by: Chenxu Di <chenxux.di at intel.com>
> >> ---
> >>  drivers/net/i40e/i40e_ethdev.c | 6 ++++++
> >>  1 file changed, 6 insertions(+)
> >>
> >> diff --git a/drivers/net/i40e/i40e_ethdev.c
> >> b/drivers/net/i40e/i40e_ethdev.c index 749d85f54..c2d5c6835 100644
> >> --- a/drivers/net/i40e/i40e_ethdev.c
> >> +++ b/drivers/net/i40e/i40e_ethdev.c
> >> @@ -13179,6 +13179,9 @@ i40e_rss_config_hash_function(struct i40e_pf
> >> *pf,
> >>  				break;
> >>  		}
> >>
> >> +		if (i == UINT64_BIT)
> >> +			return 0;
> >> +
> >
> >
> >
> >>  		for (j = I40E_FILTER_PCTYPE_INVALID + 1;
> >>  		     j < I40E_FILTER_PCTYPE_MAX; j++) {
> >>  			if (pf->adapter->pctypes_tbl[i] & (1ULL << j)) @@ -
> >> 13311,6 +13314,9 @@ i40e_rss_clear_hash_function(struct i40e_pf *pf,
> >>  				break;
> >>  		}
> >>
> >> +		if (i == UINT64_BIT)
> >> +			return 0;
> >> +
> >>  		for (j = I40E_FILTER_PCTYPE_INVALID + 1;
> >>  		     j < I40E_FILTER_PCTYPE_MAX; j++) {
> >>  			if (pf->adapter->pctypes_tbl[i] & (1ULL << j))
> >> --
> >> 2.17.1
> >


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