DPDK patches and discussions
 help / color / mirror / Atom feed
From: Gaëtan Rivet <grive@u256.net>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org, matan@mellanox.com, xiao.w.wang@intel.com,
	zhihong.wang@intel.com, xiaolong.ye@intel.com,
	chenbo.xia@intel.com, david.marchand@redhat.com,
	amorenoz@redhat.com, shreyansh.jain@nxp.com,
	viacheslavo@mellanox.com, hemant.agrawal@nxp.com,
	sachin.saxena@nxp.com, stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 01/14] bus/dpaa: fix null pointer dereference
Date: Fri, 12 Jun 2020 11:48:45 +0200
Message-ID: <20200612094845.ezbkao5f2emkdt34@u256.net> (raw)
In-Reply-To: <20200611213748.1967029-2-maxime.coquelin@redhat.com>

On 11/06/20 23:37 +0200, 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) {
>     ...
> }
> 

Given this fix and the next, this seems like an oversight / bug from the
iterator actually.  Those two fixes are still correct but the root cause
should be addressed.

> Fixes: e79df833d3f6 ("bus/dpaa: support hotplug ops")
> Cc: stable@dpdk.org
> Cc: shreyansh.jain@nxp.com
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  drivers/bus/dpaa/dpaa_bus.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
> index d53fe6083a..216f38acd4 100644
> --- a/drivers/bus/dpaa/dpaa_bus.c
> +++ b/drivers/bus/dpaa/dpaa_bus.c
> @@ -703,6 +703,11 @@ dpaa_bus_dev_iterate(const void *start, const char *str,
>  	struct rte_dpaa_device *dev;
>  	char *dup, *dev_name = NULL;
>  
> +	if (str == NULL) {
> +		DPAA_BUS_DEBUG("No device string\n");
> +		return NULL;
> +	}
> +
>  	/* Expectation is that device would be name=device_name */
>  	if (strncmp(str, "name=", 5) != 0) {
>  		DPAA_BUS_DEBUG("Invalid device string (%s)\n", str);
> -- 
> 2.26.2
> 

-- 
Gaëtan

  reply	other threads:[~2020-06-12  9:49 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-11 21:37 [dpdk-dev] [PATCH 00/14] vDPA API and framework rework Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 01/14] bus/dpaa: fix null pointer dereference Maxime Coquelin
2020-06-12  9:48   ` Gaëtan Rivet [this message]
2020-06-11 21:37 ` [dpdk-dev] [PATCH 02/14] bus/fslmc: " Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 03/14] vhost: introduce vDPA devices class Maxime Coquelin
2020-06-12 12:37   ` Gaëtan Rivet
2020-06-15  9:15     ` Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 04/14] vhost: make vDPA framework bus agnostic Maxime Coquelin
2020-06-12 12:46   ` Gaëtan Rivet
2020-06-15  9:17     ` Maxime Coquelin
2020-06-19 11:14   ` Adrian Moreno
2020-06-19 15:11     ` Maxime Coquelin
2020-06-22  9:49       ` Adrian Moreno
2020-06-22 12:34         ` Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 05/14] vhost: replace device ID in vDPA ops Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 06/14] vhost: replace vDPA device ID in Vhost Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 07/14] vhost: replace device ID in applications Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 08/14] vhost: remove useless vDPA API Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 09/14] vhost: use linked-list for vDPA devices Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 10/14] vhost: introduce wrappers for some vDPA ops Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 11/14] examples/vdpa: use new wrappers instead of ops Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 12/14] examples/vdpa: remove useless device count Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 13/14] vhost: remove vDPA device count API Maxime Coquelin
2020-06-11 21:37 ` [dpdk-dev] [PATCH 14/14] vhost: split vDPA header file Maxime Coquelin
2020-06-12  9:38 ` [dpdk-dev] [PATCH 00/14] vDPA API and framework rework Gaëtan Rivet

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200612094845.ezbkao5f2emkdt34@u256.net \
    --to=grive@u256.net \
    --cc=amorenoz@redhat.com \
    --cc=chenbo.xia@intel.com \
    --cc=david.marchand@redhat.com \
    --cc=dev@dpdk.org \
    --cc=hemant.agrawal@nxp.com \
    --cc=matan@mellanox.com \
    --cc=maxime.coquelin@redhat.com \
    --cc=sachin.saxena@nxp.com \
    --cc=shreyansh.jain@nxp.com \
    --cc=stable@dpdk.org \
    --cc=viacheslavo@mellanox.com \
    --cc=xiao.w.wang@intel.com \
    --cc=xiaolong.ye@intel.com \
    --cc=zhihong.wang@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK patches and discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git