linux-kernel - Re: [PATCH v4 14/20] iommu/tegra: gart: Fix NULL pointer dereference

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Message-ID: <20180924104918.GK21032@ulmo>
Date:   Mon, 24 Sep 2018 12:49:18 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Jonathan Hunter <jonathanh@...dia.com>,
        Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 14/20] iommu/tegra: gart: Fix NULL pointer dereference

On Mon, Sep 24, 2018 at 03:41:47AM +0300, Dmitry Osipenko wrote:
> Fix NULL pointer dereference on IOMMU domain destruction that happens
> because clients list is being iterated unsafely and its elements are
> getting deleted during the iteration.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/iommu/tegra-gart.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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