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From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: "Yang, SteveX" <stevex.yang@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Yigit, Ferruh" <ferruh.yigit@intel.com>,
	"Xing, Beilei" <beilei.xing@intel.com>,
	"Yang, SteveX" <stevex.yang@intel.com>,
	"stable@dpdk.org" <stable@dpdk.org>
Subject: RE: [PATCH v2] net/i40e: fix unintentional integer overflow
Date: Thu, 24 Feb 2022 03:25:45 +0000	[thread overview]
Message-ID: <23342a6ade1d409b9b6b879b3cf170f3@intel.com> (raw)
In-Reply-To: <20220224011722.3585748-1-stevex.yang@intel.com>



> -----Original Message-----
> From: Steve Yang <stevex.yang@intel.com>
> Sent: Thursday, February 24, 2022 9:17 AM
> To: dev@dpdk.org
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Xing, Beilei <beilei.xing@intel.com>;
> Yang, SteveX <stevex.yang@intel.com>; stable@dpdk.org
> Subject: [PATCH v2] net/i40e: fix unintentional integer overflow
> 
> Cast 1 to type uint64_t to avoid overflow.
> 
> CID 375812 (#1 of 1):
> Unintentional integer overflow (OVERFLOW_BEFORE_WIDEN)
> overflow_before_widen: Potentially overflowing expression 1 << 2 * i + 1 with
> type int (32 bits, signed) is evaluated using 32-bit arithmetic, and then used in a
> context that expects an expression of type uint64_t
> (64 bits, unsigned).
> 
> Coverity issue: 375812
> Fixes: 5fec01c35c49 ("net/i40e: support Linux VF to configure IRQ link list")
> Cc: stable@dpdk.org
> 
> ---
> v2: update commit message.
> 
> Signed-off-by: Steve Yang <stevex.yang@intel.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi


  reply	other threads:[~2022-02-24  3:25 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-23  6:41 [PATCH v1] net/i40e: fix coverity issue Steve Yang
2022-02-23 10:28 ` Ferruh Yigit
2022-02-24  1:17 ` [PATCH v2] net/i40e: fix unintentional integer overflow Steve Yang
2022-02-24  3:25   ` Zhang, Qi Z [this message]
2022-02-24  4:10   ` Stephen Hemminger
2022-02-24  6:21     ` Yang, SteveX
2022-02-24 11:42       ` Ferruh Yigit
2022-02-25  2:39   ` [PATCH v3] " Steve Yang
2022-02-25 14:48     ` Ferruh Yigit

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