linux-kernel - Re: [PATCH] of: dynamic: Fix potential memory leak in of_changeset

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Message-ID: <CAMuHMdVUQ1rZj_9TLd3qjZ2knRK0npnTME9ijiU8qkPnKbyqmA@mail.gmail.com>
Date:   Fri, 8 Sep 2023 09:16:26 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Dan Carpenter <dan.carpenter@...aro.org>
Cc:     Rob Herring <robh@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] of: dynamic: Fix potential memory leak in of_changeset_action()

On Fri, Sep 8, 2023 at 9:03 AM Dan Carpenter <dan.carpenter@...aro.org> wrote:
> Smatch complains that the error path where "action" is invalid leaks
> the "ce" allocation:
>     drivers/of/dynamic.c:935 of_changeset_action()
>     warn: possible memory leak of 'ce'
>
> Fix this by doing the validation before the allocation.
>
> Fixes: 914d9d831e61 ("of: dynamic: Refactor action prints to not use "%pOF" inside devtree_lock")
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/r/202309011059.EOdr4im9-lkp@intel.com/
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds