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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-dev] [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);
> 


  parent reply	other threads:[~2020-05-06 21:14 UTC|newest]

Thread overview: 109+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-02 14:58 [dpdk-dev] [PATCH 00/16] NXP DPAAx fixes and enhancements Hemant Agrawal
2020-03-02 13:01 ` David Marchand
2020-03-05  9:06   ` Hemant Agrawal (OSS)
2020-03-05  9:09     ` David Marchand
2020-03-05  9:19       ` Hemant Agrawal (OSS)
2020-03-06 10:12         ` David Marchand
2020-03-10 10:36           ` Dodji Seketeli
2020-04-07 10:25             ` Hemant Agrawal
2020-04-07 12:20               ` Thomas Monjalon
2020-04-08  7:20               ` Dodji Seketeli
2020-04-08  7:52                 ` Dodji Seketeli
2020-04-08 12:35                   ` Thomas Monjalon
2020-03-02 14:58 ` [dpdk-dev] [PATCH 01/16] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 02/16] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 03/16] bus/fslmc: combine thread specific variables Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 04/16] bus/fslmc: rework portal allocation to a per thread basis Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 05/16] bus/fslmc: support handle portal alloc failure Hemant Agrawal
2020-03-09 17:00   ` Ferruh Yigit
2020-03-09 17:04     ` Ferruh Yigit
2020-03-02 14:58 ` [dpdk-dev] [PATCH 06/16] bus/fslmc: limit pthread destructor called for dpaa2 only Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 07/16] bus/fslmc: support portal migration Hemant Agrawal
2020-03-03 17:43   ` Ferruh Yigit
2020-03-02 14:58 ` [dpdk-dev] [PATCH 08/16] drivers: enhance portal allocation failure log Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 09/16] bus/fslmc: rename the cinh read functions used for ls1088 Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 10/16] net/dpaa: return error on multiple mp config Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 11/16] net/dpaa: enable Tx queue taildrop Hemant Agrawal
2020-03-03 16:59   ` Ferruh Yigit
2020-03-04  8:43     ` Hemant Agrawal (OSS)
2020-03-04  8:49     ` David Marchand
2020-03-03 17:02   ` Ferruh Yigit
2020-03-05  6:49     ` Gagandeep Singh
2020-03-05 14:14       ` Ferruh Yigit
2020-03-02 14:58 ` [dpdk-dev] [PATCH 12/16] net/dpaa: add 2.5G support Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 13/16] net/dpaa: update process specific device info Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 14/16] bus/dpaa: enable link state interrupt Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 15/16] bus/dpaa: enable set link status Hemant Agrawal
2020-03-02 14:58 ` [dpdk-dev] [PATCH 16/16] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-03-06  9:57 ` [dpdk-dev] [PATCH v2 00/16] NXP DPAAx fixes and enhancements Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 01/16] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 02/16] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 03/16] bus/fslmc: combine thread specific variables Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 04/16] bus/fslmc: rework portal allocation to a per thread basis Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 05/16] bus/fslmc: support handle portal alloc failure Hemant Agrawal
2020-03-13 16:20     ` Ferruh Yigit
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 06/16] bus/fslmc: limit pthread destructor called for dpaa2 only Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 07/16] bus/fslmc: support portal migration Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 08/16] drivers: enhance portal allocation failure log Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 09/16] bus/fslmc: rename the cinh read functions used for ls1088 Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 10/16] net/dpaa: return error on multiple mp config Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 11/16] net/dpaa: enable Tx queue taildrop Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 12/16] net/dpaa: add 2.5G support Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 13/16] net/dpaa: update process specific device info Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 14/16] bus/dpaa: enable link state interrupt Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 15/16] bus/dpaa: enable set link status Hemant Agrawal
2020-03-06  9:57   ` [dpdk-dev] [PATCH v2 16/16] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-05-04 12:41   ` [dpdk-dev] [PATCH v3 0/8] NXP DPAAx fixes and enhancements Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 1/8] bus/fslmc: fix dereferencing null pointer 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-dev] [PATCH v3 2/8] net/dpaa2: fix 10g port negotiation issue Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 3/8] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 4/8] net/dpaa2: add default Rx params in devinfo Hemant Agrawal
2020-05-06 21:29       ` Ferruh Yigit
2020-05-07  5:35         ` Hemant Agrawal (OSS)
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 5/8] drivers: dpaa2 enhance portal alloc failure log Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 6/8] net/dpaa2: support UDP dst port based muxing Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 7/8] net/dpaa2: reduce prints in queue count functions Hemant Agrawal
2020-05-04 12:41     ` [dpdk-dev] [PATCH v3 8/8] net/dpaa2: use cong group id for multiple tcs Hemant Agrawal
2020-05-06 21:38       ` Ferruh Yigit
2020-05-07  5:37         ` Hemant Agrawal (OSS)
2020-05-07 10:46     ` [dpdk-dev] [PATCH v4 0/9] NXP DPAAx fixes and enhancements Hemant Agrawal
2020-05-07 10:46       ` [dpdk-dev] [PATCH v4 1/9] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-05-07 10:46       ` [dpdk-dev] [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-dev] [PATCH v4 3/9] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-05-07 10:46       ` [dpdk-dev] [PATCH v4 4/9] net/dpaa2: add default values for Rx params in info Hemant Agrawal
2020-05-07 14:30         ` Ferruh Yigit
2020-05-07 10:46       ` [dpdk-dev] [PATCH v4 5/9] drivers: dpaa2 enhance portal alloc failure log Hemant Agrawal
2020-05-07 14:31         ` Ferruh Yigit
2020-05-07 10:46       ` [dpdk-dev] [PATCH v4 6/9] net/dpaa2: support UDP dst port based muxing Hemant Agrawal
2020-05-07 10:46       ` [dpdk-dev] [PATCH v4 7/9] net/dpaa2: reduce prints in queue count functions Hemant Agrawal
2020-05-07 10:46       ` [dpdk-dev] [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-dev] [PATCH v4 9/9] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
2020-05-08 12:59       ` [dpdk-dev] [PATCH v5 0/9] NXP DPAAx fixes and enhancements Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 1/9] net/dpaa2: fix 10G port negotiation issue Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 2/9] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 3/9] net/dpaa2: add default values for Rx params in info Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 4/9] drivers: dpaa2 enhance portal alloc failure log Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 5/9] net/dpaa2: support UDP dst port based muxing Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 6/9] net/dpaa2: reduce prints in queue count functions Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 7/9] net/dpaa2: fix cong group id for multiple tcs Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 8/9] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
2020-05-08 12:59         ` [dpdk-dev] [PATCH v5 9/9] net/dpaa2: add the support for additional link speeds Hemant Agrawal
2020-05-08 13:02       ` [dpdk-dev] [PATCH v6 00/10] NXP DPAAx fixes and enhancement Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 01/10] bus/fslmc: fix dereferencing null pointer Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 02/10] net/dpaa2: fix 10G port negotiation issue Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 03/10] net/dpaa2: do not prefetch annotaion for physical mode Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 04/10] net/dpaa2: add default values for Rx params in info Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 05/10] drivers: dpaa2 enhance portal alloc failure log Hemant Agrawal
2020-05-08 16:07           ` Ferruh Yigit
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 06/10] net/dpaa2: support UDP dst port based muxing Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 07/10] net/dpaa2: reduce prints in queue count functions Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 08/10] net/dpaa2: fix cong group id for multiple tcs Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 09/10] bus/fslmc: fix the size of qman fq desc Hemant Agrawal
2020-05-08 13:02         ` [dpdk-dev] [PATCH v6 10/10] net/dpaa2: add the support for additional link speeds Hemant Agrawal
2020-05-08 13:08         ` [dpdk-dev] [PATCH v6 00/10] NXP DPAAx fixes and enhancement Hemant Agrawal (OSS)
2020-05-08 19:32           ` Ferruh Yigit

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