linux-kernel - Re: [PATCH v2 1/4] ipack: tpci200: fix many double free issues in tpci200_pci

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Message-ID: <CAD-N9QXFWr2APy294T6v+16d8SXtUuLEoPvZTw1ZDwfQ+D4kFg@mail.gmail.com>
Date:   Tue, 10 Aug 2021 07:08:42 +0800
From:   Dongliang Mu <mudongliangabcd@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Samuel Iglesias Gonsalvez <siglesias@...lia.com>,
        Jens Taprogge <jens.taprogge@...rogge.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Aditya Srivastava <yashsri421@...il.com>,
        Lv Yunlong <lyl2019@...l.ustc.edu.cn>,
        industrypack-devel@...ts.sourceforge.net,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/4] ipack: tpci200: fix many double free issues in tpci200_pci_probe

On Mon, Aug 9, 2021 at 11:32 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Mon, Aug 09, 2021 at 10:30:26PM +0800, Dongliang Mu wrote:
> > The function tpci200_register called by tpci200_install and
> > tpci200_unregister called by tpci200_uninstall are in pair. However,
> > tpci200_unregister has some cleanup operations not in the
> > tpci200_register. So the error handling code of tpci200_pci_probe has
> > many different double free issues.
> >
> > Fix this problem by moving those cleanup operations out of
> > tpci200_unregister, into tpci200_pci_remove and reverting
> > the previous commit 9272e5d0028d ("ipack/carriers/tpci200:
> > Fix a double free in tpci200_pci_probe").
> >
> > Reported-by: Dongliang Mu <mudongliangabcd@...il.com>
> > Fixes: 9272e5d0028d ("ipack/carriers/tpci200: Fix a double free in tpci200_pci_probe")
> > Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>
> > ---
> > v1->v2: revise PATCH 2/3, 3/3, not depending on PATCH 1/3; move the
> > location change of tpci_unregister into one separate patch;
>
> Also needs to go to the stable trees, right?

Yes, this needs to go to the stable trees.

>