linux-kernel - Re: [PATCH] uml: free resources

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Date:	Thu, 7 Jul 2011 16:08:22 +0300
From:	Vitaliy Ivanov <vitalivanov@...il.com>
To:	dave@....org
Cc:	Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
	uml <user-mode-linux-devel@...ts.sourceforge.net>,
	lkml <linux-kernel@...r.kernel.org>,
	Jim Meyering <meyering@...hat.com>
Subject: Re: [PATCH] uml: free resources

On Thu, Jul 7, 2011 at 7:02 AM, Davidlohr Bueso <dave@....org> wrote:
> From: Davidlohr Bueso <dave@....org>
>
> When creating the temp file there's a memory and file descriptor leak upon error.
>
> Signed-off-by: Davidlohr Bueso <dave@....org>
> ---
>  arch/um/os-Linux/mem.c |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
> index e696144..62878cf 100644
> --- a/arch/um/os-Linux/mem.c
> +++ b/arch/um/os-Linux/mem.c
> @@ -176,7 +176,7 @@ static int __init make_tempfile(const char *template, char **out_tempname,
>
>        find_tempdir();
>        if ((tempdir == NULL) || (strlen(tempdir) >= MAXPATHLEN))
> -               return -1;
> +               goto out;
>
>        if (template[0] != '/')
>                strcpy(tempname, tempdir);
> @@ -191,13 +191,15 @@ static int __init make_tempfile(const char *template, char **out_tempname,
>        }
>        if (do_unlink && (unlink(tempname) < 0)) {
>                perror("unlink");
> -               goto out;
> +               goto close;
>        }
>        if (out_tempname) {
>                *out_tempname = tempname;
>        } else
>                free(tempname);
>        return fd;
> +close:
> +       close(fd);
>  out:
>        free(tempname);
>        return -1;
> --

Reviewed-by: Vitaliy Ivanov <vitalivanov@...il.com>
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