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From: "Xie, Huawei" <huawei.xie@intel.com>
To: Pavel Boldin <pboldin@mirantis.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] vhost: Fix `struct file' leakage in	`eventfd_link'
Date: Mon, 23 Mar 2015 14:21:49 +0000	[thread overview]
Message-ID: <C37D651A908B024F974696C65296B57B0F3F1E14@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1427115225-14489-1-git-send-email-pboldin@mirantis.com>

On 3/23/2015 8:54 PM, Pavel Boldin wrote:
> Due to increased `struct file's reference counter subsequent call
> to `filp_close' does not free the `struct file'. Prepend `fput' call
> to decrease the reference counter.
>
> Signed-off-by: Pavel Boldin <pboldin@mirantis.com>
> ---
>  lib/librte_vhost/eventfd_link/eventfd_link.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c
> index 7755dd6..62c45c8 100644
> --- a/lib/librte_vhost/eventfd_link/eventfd_link.c
> +++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
> @@ -117,6 +117,7 @@ eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
>  		 * Release the existing eventfd in the source process
>  		 */
>  		spin_lock(&files->file_lock);
> +		fput(file);
Could we just call atomic_long_dec here?
>  		filp_close(file, files);
>  		fdt = files_fdtable(files);
>  		fdt->fd[eventfd_copy.source_fd] = NULL;


  reply	other threads:[~2015-03-23 14:21 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-23 12:53 Pavel Boldin
2015-03-23 14:21 ` Xie, Huawei [this message]
2015-03-23 14:36   ` Pavel Boldin
2015-03-23 14:41     ` Xie, Huawei
2015-03-23 14:51       ` Pavel Boldin
2015-03-23 15:16         ` Xie, Huawei
2015-03-23 15:22           ` Thomas Monjalon
2015-03-23 15:27           ` Pavel Boldin
2015-03-23 15:36             ` Xie, Huawei
2015-03-23 15:44               ` Pavel Boldin
2015-03-24  6:28 ` Xie, Huawei
2015-03-24 11:10   ` Pavel Boldin
2015-03-24 16:20     ` Xie, Huawei
2015-03-24 20:08       ` Pavel Boldin
2015-03-26  7:53         ` Xie, Huawei
2015-03-27 11:12   ` Thomas Monjalon
2015-03-26  7:56 ` Xie, Huawei
2015-03-26 15:17   ` Pavel Boldin
2015-03-27 11:10   ` Thomas Monjalon
2015-03-27 12:36     ` Pavel Boldin
2015-03-27 13:15       ` Thomas Monjalon
2015-03-26 15:20 ` Xie, Huawei

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