linux-kernel - Re: [PATCH] media: rockchip/rga: Fix a reference count leak.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <2014126.fRahu6ktRn@diego>
Date:   Thu, 18 Jun 2020 14:29:56 +0200
From:   Heiko Stübner <heiko@...ech.de>
To:     wu000273@....edu
Cc:     kjlu@....edu, Jacob Chen <jacob-chen@...wrt.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hansverk@...co.com>, linux-media@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: rockchip/rga: Fix a reference count leak.

Am Sonntag, 14. Juni 2020, 01:13:49 CEST schrieb wu000273@....edu:
> From: Qiushi Wu <wu000273@....edu>
> 
> pm_runtime_get_sync() increments the runtime PM usage counter even
> when it returns an error code. Thus call pm_runtime_put_noidle()
> if pm_runtime_get_sync() fails.
> 
> Fixes: f7e7b48e6d79 ("[media] rockchip/rga: v4l2 m2m support")
> Signed-off-by: Qiushi Wu <wu000273@....edu>

Reviewed-by: Heiko Stuebner <heiko@...ech.de>

> ---
>  drivers/media/platform/rockchip/rga/rga-buf.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/media/platform/rockchip/rga/rga-buf.c b/drivers/media/platform/rockchip/rga/rga-buf.c
> index 36b821ccc1db..bf9a75b75083 100644
> --- a/drivers/media/platform/rockchip/rga/rga-buf.c
> +++ b/drivers/media/platform/rockchip/rga/rga-buf.c
> @@ -81,6 +81,7 @@ static int rga_buf_start_streaming(struct vb2_queue *q, unsigned int count)
>  
>  	ret = pm_runtime_get_sync(rga->dev);
>  	if (ret < 0) {
> +		pm_runtime_put_noidle(rga->dev);
>  		rga_buf_return_buffers(q, VB2_BUF_STATE_QUEUED);
>  		return ret;
>  	}
>