patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: "Xia, Chenbo" <chenbo.xia@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>, "Ding, Xuan" <xuan.ding@intel.com>,
	"stephen@networkplumber.org" <stephen@networkplumber.org>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>
Cc: "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH 2/3] vhost: fix fd leak in dirty logging setup
Date: Fri, 6 Nov 2020 09:07:50 +0100
Message-ID: <a1b64db0-b0b3-10e3-ea1f-86952d11284f@redhat.com> (raw)
In-Reply-To: <MN2PR11MB4063550C0B9BF9910C2D92FF9CED0@MN2PR11MB4063.namprd11.prod.outlook.com>



On 11/6/20 3:53 AM, Xia, Chenbo wrote:
> Hi Maxime,
> 
>> -----Original Message-----
>> From: Maxime Coquelin <maxime.coquelin@redhat.com>
>> Sent: Thursday, November 5, 2020 7:46 PM
>> To: dev@dpdk.org; Ding, Xuan <xuan.ding@intel.com>;
>> stephen@networkplumber.org; Yigit, Ferruh <ferruh.yigit@intel.com>;
>> thomas@monjalon.net; Xia, Chenbo <chenbo.xia@intel.com>
>> Cc: stable@dpdk.org; Maxime Coquelin <maxime.coquelin@redhat.com>
>> Subject: [PATCH 2/3] vhost: fix fd leak in dirty logging setup
>>
>> This patch fixes a file descriptor leak which happens
>> in the error path of vhost_user_set_log_base().
>>
>> Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost application")
>> Cc: stable@dpdk.org
>>
>> Reported-by: Xuan Ding <xuan.ding@intel.com>
>> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>> ---
>>  lib/librte_vhost/vhost_user.c | 10 +++++++---
>>  1 file changed, 7 insertions(+), 3 deletions(-)
>>
>> diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
>> index 473fd778ca..7dfda15991 100644
>> --- a/lib/librte_vhost/vhost_user.c
>> +++ b/lib/librte_vhost/vhost_user.c
>> @@ -2076,14 +2076,14 @@ vhost_user_set_log_base(struct virtio_net **pdev,
>> struct VhostUserMsg *msg,
>>
>>  	if (fd < 0) {
>>  		VHOST_LOG_CONFIG(ERR, "invalid log fd: %d\n", fd);
>> -		return RTE_VHOST_MSG_RESULT_ERR;
>> +		goto close_msg_fds;
> 
> IMHO, there's nothing to close in this case. Before this check, validate_msg_fds
> makes sure that this msg has only one fd and now this fd is invalid. So when this
> error occurs, going to close_msg_fds always does nothing. So I think we don't need
> this change here?

Thanks for the detailed review.
Yes, you are right, we can simply return here as before since no FD are
to close.

I will post v2 soon.

Thanks,
Maxime

> Thanks!
> Chenbo


  reply	other threads:[~2020-11-06  8:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-05 11:45 [dpdk-stable] [PATCH 0/3] vhost: fix fd an memory leaks Maxime Coquelin
2020-11-05 11:45 ` [dpdk-stable] [PATCH 1/3] vhost: fix error path when setting memory tables Maxime Coquelin
2020-11-06  2:53   ` Xia, Chenbo
2020-11-06  8:13     ` Maxime Coquelin
2020-11-05 11:45 ` [dpdk-stable] [PATCH 2/3] vhost: fix fd leak in dirty logging setup Maxime Coquelin
2020-11-06  2:53   ` Xia, Chenbo
2020-11-06  8:07     ` Maxime Coquelin [this message]
2020-11-05 11:45 ` [dpdk-stable] [PATCH 3/3] vhost: fix fd leak in kick setup Maxime Coquelin
2020-11-06  2:53   ` Xia, Chenbo

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=a1b64db0-b0b3-10e3-ea1f-86952d11284f@redhat.com \
    --to=maxime.coquelin@redhat.com \
    --cc=chenbo.xia@intel.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=stable@dpdk.org \
    --cc=stephen@networkplumber.org \
    --cc=thomas@monjalon.net \
    --cc=xuan.ding@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

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/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 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

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


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