linux-kernel - Re: [PATCH] brcmsmac: fix memory leak in wlc_phy_attach

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Date:   Tue, 8 Sep 2020 21:02:35 +0900
From:   Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>
To:     Arend Van Spriel <arend.vanspriel@...adcom.com>
Cc:     Takafumi Kubota <takafumi@...ab.ics.keio.ac.jp>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
        <linux-wireless@...r.kernel.org>,
        "open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
        <brcm80211-dev-list.pdl@...adcom.com>,
        "open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
        <brcm80211-dev-list@...ress.com>,
        "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] brcmsmac: fix memory leak in wlc_phy_attach_lcnphy

Thank you for your comment. I am relatively new to the Linux
kernel community, so I am more than happy to receive comments.
Please let me know if I'm violating any other rules.

> > Signed-off-by: Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>
> > ---
> ... changelog here describing difference between previous patch and this
> version.

I will re-send the patch with the change log.

Thanks,
Keita

2020年9月8日(火) 20:18 Arend Van Spriel <arend.vanspriel@...adcom.com>:
>
> On 9/8/2020 2:13 AM, Keita Suzuki wrote:
> > When wlc_phy_txpwr_srom_read_lcnphy fails in wlc_phy_attach_lcnphy,
> > the allocated pi->u.pi_lcnphy is leaked, since struct brcms_phy will be
> > freed in the caller function.
> >
> > Fix this by calling wlc_phy_detach_lcnphy in the error handler of
> > wlc_phy_txpwr_srom_read_lcnphy before returning.
>
> Thanks for resubmitting the patch addressing my comment. For clarity it
> is recommended to mark the subject with '[PATCH V2]' and add a ...
>
> > Signed-off-by: Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>
> > ---
> ... changelog here describing difference between previous patch and this
> version.
>
> Regards,
> Arend
> ---
> >   .../net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c    | 4 +++-
> >   1 file changed, 3 insertions(+), 1 deletion(-)