linux-kernel - Re: [PATCH] ipmi: Fix memory leak in __ipmi_bmc

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Date:   Tue, 22 Oct 2019 10:49:12 -0500
From:   Corey Minyard <minyard@....org>
To:     Navid Emamdoost <navid.emamdoost@...il.com>
Cc:     emamd001@....edu, kjlu@....edu, smccaman@....edu,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipmi: Fix memory leak in __ipmi_bmc_register

On Mon, Oct 21, 2019 at 03:06:48PM -0500, Navid Emamdoost wrote:
> In the impelementation of __ipmi_bmc_register() the allocated memory for
> bmc should be released in case ida_simple_get() fails.

Thanks, queued for next merge window.

-corey

> 
> Fixes: 68e7e50f195f ("ipmi: Don't use BMC product/dev ids in the BMC name")
> Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
> ---
>  drivers/char/ipmi/ipmi_msghandler.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
> index 2aab80e19ae0..e4928ed46396 100644
> --- a/drivers/char/ipmi/ipmi_msghandler.c
> +++ b/drivers/char/ipmi/ipmi_msghandler.c
> @@ -3031,8 +3031,11 @@ static int __ipmi_bmc_register(struct ipmi_smi *intf,
>  		bmc->pdev.name = "ipmi_bmc";
>  
>  		rv = ida_simple_get(&ipmi_bmc_ida, 0, 0, GFP_KERNEL);
> -		if (rv < 0)
> +		if (rv < 0) {
> +			kfree(bmc);
>  			goto out;
> +		}
> +
>  		bmc->pdev.dev.driver = &ipmidriver.driver;
>  		bmc->pdev.id = rv;
>  		bmc->pdev.dev.release = release_bmc_device;
> -- 
> 2.17.1
>