linux-kernel - Re: [PATCH] drm/amd/display: fix memory leak when using debugfs

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Date:   Tue, 6 Sep 2022 17:49:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Rodrigo Siqueira Jordao <Rodrigo.Siqueira@....com>
Cc:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Alex Deuc her <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Xinhui.Pan@....com, linux-kernel@...r.kernel.org,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Wayne Lin <Wayne.Lin@....com>,
        hersen wu <hersenxs.wu@....com>,
        Wenjing Liu <wenjing.liu@....com>,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        Thelford Williams <tdwilliamsiv@...il.com>,
        Fangzhi Zuo <Jerry.Zuo@....com>,
        Yongzhi Liu <lyz_cs@....edu.cn>,
        Mikita Lipski <mikita.lipski@....com>,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Bhanuprakash Modem <bhanuprakash.modem@...el.com>,
        Sean Paul <seanpaul@...omium.org>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/amd/display: fix memory leak when using
 debugfs_lookup()

On Tue, Sep 06, 2022 at 11:39:44AM -0400, Rodrigo Siqueira Jordao wrote:
> 
> 
> On 2022-09-06 11:06, Greg Kroah-Hartman wrote:
> > On Tue, Sep 06, 2022 at 10:52:28AM -0400, Rodrigo Siqueira Jordao wrote:
> > > 
> > > 
> > > On 2022-09-02 09:10, Greg Kroah-Hartman wrote:
> > > > On Fri, Sep 02, 2022 at 03:01:05PM +0200, Greg Kroah-Hartman wrote:
> > > > > When calling debugfs_lookup() the result must have dput() called on it,
> > > > > otherwise the memory will leak over time.  Fix this up by properly
> > > > > calling dput().
> > > > > 
> > > > > Cc: Harry Wentland <harry.wentland@....com>
> > > > > Cc: Leo Li <sunpeng.li@....com>
> > > > > Cc: Rodrigo Siqueira <Rodrigo.Siqueira@....com>
> > > > > Cc: Alex Deucher <alexander.deucher@....com>
> > > > > Cc: "Christian König" <christian.koenig@....com>
> > > > > Cc: "Pan, Xinhui" <Xinhui.Pan@....com>
> > > > > Cc: David Airlie <airlied@...ux.ie>
> > > > > Cc: Daniel Vetter <daniel@...ll.ch>
> > > > > Cc: Wayne Lin <Wayne.Lin@....com>
> > > > > Cc: hersen wu <hersenxs.wu@....com>
> > > > > Cc: Wenjing Liu <wenjing.liu@....com>
> > > > > Cc: Patrik Jakobsson <patrik.r.jakobsson@...il.com>
> > > > > Cc: Thelford Williams <tdwilliamsiv@...il.com>
> > > > > Cc: Fangzhi Zuo <Jerry.Zuo@....com>
> > > > > Cc: Yongzhi Liu <lyz_cs@....edu.cn>
> > > > > Cc: Mikita Lipski <mikita.lipski@....com>
> > > > > Cc: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
> > > > > Cc: Bhanuprakash Modem <bhanuprakash.modem@...el.com>
> > > > > Cc: Sean Paul <seanpaul@...omium.org>
> > > > > Cc: amd-gfx@...ts.freedesktop.org
> > > > > Cc: dri-devel@...ts.freedesktop.org
> > > > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > > > ---
> > > > 
> > > > Despite a zillion cc: items, I forgot to cc: stable on this.  Can the
> > > > maintainer add that here, or do you all want me to resend it with that
> > > > item added?
> > > > 
> > > > thanks,
> > > > 
> > > > greg k-h
> > > 
> > > Hi Greg,
> > > 
> > > Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@....com>
> > > 
> > > Is 'Cc: stable@...r.kernel.org' enough here? I can make this change before I
> > > merge it into amd-staging-drm-next.
> > 
> > Yes, please add the cc: stable@ line to the body of the patch, sorry I
> > forgot that.
> > 
> 
> Change applied to amd-staging-drm-next, with the Cc to the stable branch.

Wonderful, thanks!