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From: Adrian Moreno <amorenoz@redhat.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	matan@mellanox.com, xiao.w.wang@intel.com,
	zhihong.wang@intel.com, chenbo.xia@intel.com,
	david.marchand@redhat.com, viacheslavo@mellanox.com,
	hemant.agrawal@nxp.com, sachin.saxena@nxp.com, grive@u256.net,
	dev@dpdk.org
Cc: stable@dpdk.org, shreyansh.jain@nxp.com
Subject: Re: [dpdk-dev] [PATCH v3 02/14] bus/fslmc: fix null pointer dereference
Date: Fri, 26 Jun 2020 15:48:16 +0200
Message-ID: <45e4aec5-9248-ba2f-3562-8a1a45e1799e@redhat.com> (raw)
In-Reply-To: <20200626132712.1437673-3-maxime.coquelin@redhat.com>



On 6/26/20 3:27 PM, Maxime Coquelin wrote:
> This patches fixes a null pointer derefencing that happens
> when the device string passed to the iterator is NULL. This
> situation can happen when iterating on a class type.
> For example:
> 
> RTE_DEV_FOREACH(dev, "class=eth", &dev_iter) {
>     ...
> }
> 
> Fixes: e67a61614d0b ("bus/fslmc: support device iteration")
> Cc: stable@dpdk.org
> Cc: shreyansh.jain@nxp.com
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  drivers/bus/fslmc/fslmc_bus.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
> index afbd82e8db..ac46eb4fe8 100644
> --- a/drivers/bus/fslmc/fslmc_bus.c
> +++ b/drivers/bus/fslmc/fslmc_bus.c
> @@ -603,6 +603,11 @@ fslmc_bus_dev_iterate(const void *start, const char *str,
>  	struct rte_dpaa2_device *dev;
>  	char *dup, *dev_name = NULL;
>  
> +	if (str == NULL) {
> +		DPAA2_BUS_DEBUG("No device string");
> +		return NULL;
> +	}
> +
>  	/* Expectation is that device would be name=device_name */
>  	if (strncmp(str, "name=", 5) != 0) {
>  		DPAA2_BUS_DEBUG("Invalid device string (%s)\n", str);
> 
Acked-by: Adrián Moreno <amorenoz@redhat.com>

-- 
Adrián Moreno


  reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-26 13:26 [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework Maxime Coquelin
2020-06-26 13:26 ` [dpdk-dev] [PATCH v3 01/14] bus/dpaa: fix null pointer dereference Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 02/14] bus/fslmc: " Maxime Coquelin
2020-06-26 13:48   ` Adrian Moreno [this message]
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 03/14] vhost: introduce vDPA devices class Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 04/14] vhost: make vDPA framework bus agnostic Maxime Coquelin
2020-06-26 13:49   ` Adrian Moreno
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 05/14] vhost: replace device ID in vDPA ops Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 06/14] vhost: replace vDPA device ID in Vhost Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 07/14] vhost: replace device ID in applications Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 08/14] vhost: remove useless vDPA API Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 09/14] vhost: use linked-list for vDPA devices Maxime Coquelin
2020-06-26 13:56   ` Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 10/14] vhost: introduce wrappers for some vDPA ops Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 11/14] examples/vdpa: use new wrappers instead of ops Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 12/14] examples/vdpa: remove useless device count Maxime Coquelin
2020-06-26 13:50   ` Adrian Moreno
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 13/14] vhost: remove vDPA device count API Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 14/14] vhost: split vDPA header file Maxime Coquelin
2020-06-26 14:04 [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 02/14] bus/fslmc: fix null pointer dereference Maxime Coquelin

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