From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Hemant Agrawal <hemant.agrawal@nxp.com>, dev@dpdk.org
Cc: stable@dpdk.org, Apeksha Gupta <apeksha.gupta@nxp.com>
Subject: Re: [dpdk-stable] [PATCH v3 1/8] bus/fslmc: fix dereferencing null pointer
Date: Wed, 6 May 2020 22:14:14 +0100 [thread overview]
Message-ID: <6da491ce-d11e-afe5-c7e7-49ac1e9c7a60@intel.com> (raw)
In-Reply-To: <20200504124118.22877-2-hemant.agrawal@nxp.com>
On 5/4/2020 1:41 PM, Hemant Agrawal wrote:
> From: Apeksha Gupta <apeksha.gupta@nxp.com>
>
> This patch fixees the nxp internal coverity reported
> null pointer dereferncing issue.
>
> Fixes: 6fef517e17cf ("bus/fslmc: add qman HW fq query count API")
> Cc: stable@dpdk.org
>
> Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
> ---
> drivers/bus/fslmc/qbman/qbman_debug.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/bus/fslmc/qbman/qbman_debug.c b/drivers/bus/fslmc/qbman/qbman_debug.c
> index 0bb2ce880f..34374ae4b6 100644
> --- a/drivers/bus/fslmc/qbman/qbman_debug.c
> +++ b/drivers/bus/fslmc/qbman/qbman_debug.c
> @@ -20,26 +20,27 @@ struct qbman_fq_query_desc {
> uint8_t verb;
> uint8_t reserved[3];
> uint32_t fqid;
> - uint8_t reserved2[57];
> + uint8_t reserved2[56];
Is decreasing 'reserved2' size related to null pointer de-referencing? This
looks unrelated.
> };
>
> int qbman_fq_query_state(struct qbman_swp *s, uint32_t fqid,
> struct qbman_fq_query_np_rslt *r)
> {
> struct qbman_fq_query_desc *p;
> + struct qbman_fq_query_np_rslt *var;
>
> p = (struct qbman_fq_query_desc *)qbman_swp_mc_start(s);
> if (!p)
> return -EBUSY;
>
> p->fqid = fqid;
> - *r = *(struct qbman_fq_query_np_rslt *)qbman_swp_mc_complete(s, p,
> - QBMAN_FQ_QUERY_NP);
> - if (!r) {
> + var = qbman_swp_mc_complete(s, p, QBMAN_FQ_QUERY_NP);
> + if (!var) {
> pr_err("qbman: Query FQID %d NP fields failed, no response\n",
> fqid);
> return -EIO;
> }
> + *r = *var;
>
> /* Decode the outcome */
> QBMAN_BUG_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_FQ_QUERY_NP);
>
next prev parent reply other threads:[~2020-05-06 21:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200302145829.27808-1-hemant.agrawal@nxp.com>
2020-03-02 14:58 ` [dpdk-stable] [PATCH 01/16] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-03-02 14:58 ` [dpdk-stable] [PATCH 02/16] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
[not found] ` <20200306095742.18080-1-hemant.agrawal@nxp.com>
2020-03-06 9:57 ` [dpdk-stable] [PATCH v2 01/16] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-03-06 9:57 ` [dpdk-stable] [PATCH v2 02/16] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
[not found] ` <20200504124118.22877-1-hemant.agrawal@nxp.com>
2020-05-04 12:41 ` [dpdk-stable] [PATCH v3 1/8] " Hemant Agrawal
2020-05-06 21:08 ` Ferruh Yigit
2020-05-06 21:09 ` Ferruh Yigit
2020-05-06 21:14 ` Ferruh Yigit [this message]
2020-05-04 12:41 ` [dpdk-stable] [PATCH v3 2/8] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
[not found] ` <20200507104645.31990-1-hemant.agrawal@nxp.com>
2020-05-07 10:46 ` [dpdk-stable] [PATCH v4 1/9] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-05-07 10:46 ` [dpdk-stable] [PATCH v4 2/9] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-05-07 14:36 ` Ferruh Yigit
2020-05-07 10:46 ` [dpdk-stable] [PATCH v4 8/9] net/dpaa2: fix cong group id for multiple tcs Hemant Agrawal
2020-05-07 14:33 ` Ferruh Yigit
2020-05-07 10:46 ` [dpdk-stable] [PATCH v4 9/9] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
[not found] ` <20200508125934.14255-1-hemant.agrawal@nxp.com>
2020-05-08 12:59 ` [dpdk-stable] [PATCH v5 1/9] net/dpaa2: fix 10G port negotiation issue Hemant Agrawal
2020-05-08 12:59 ` [dpdk-stable] [PATCH v5 7/9] net/dpaa2: fix cong group id for multiple tcs Hemant Agrawal
2020-05-08 12:59 ` [dpdk-stable] [PATCH v5 8/9] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
[not found] ` <20200508130211.14334-1-hemant.agrawal@nxp.com>
2020-05-08 13:02 ` [dpdk-stable] [PATCH v6 01/10] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-05-08 13:02 ` [dpdk-stable] [PATCH v6 02/10] net/dpaa2: fix 10G port negotiation issue Hemant Agrawal
2020-05-08 13:02 ` [dpdk-stable] [PATCH v6 08/10] net/dpaa2: fix cong group id for multiple tcs Hemant Agrawal
2020-05-08 13:02 ` [dpdk-stable] [PATCH v6 09/10] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
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