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From: Jakub Kicinski <kuba@kernel.org>
To: Sriranjani P <sriranjani.p@samsung.com>
Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, peppe.cavallaro@st.com,
	alexandre.torgue@foss.st.com, joabreu@synopsys.com,
	davem@davemloft.net, mcoquelin.stm32@gmail.com,
	linux@armlinux.org.uk, boon.leong.ong@intel.com,
	Pankaj Dubey <pankaj.dubey@samsung.com>
Subject: Re: [PATCH] net: stmmac: fix kernel panic due to NULL pointer dereference of mdio_bus_data
Date: Sun, 30 May 2021 14:16:23 -0700	[thread overview]
Message-ID: <20210530141623.33d2d00d@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> (raw)
In-Reply-To: <20210528071056.35252-1-sriranjani.p@samsung.com>

On Fri, 28 May 2021 12:40:56 +0530 Sriranjani P wrote:
> Fixed link does not need mdio bus and in that case mdio_bus_data will
> not be allocated. Before using mdio_bus_data we should check for NULL.
> 
> This patch fix the kernel panic due to NULL pointer dereference of
> mdio_bus_data when it is not allocated.
> 
> Without this patch we do see following kernel crash caused due to kernel
> NULL pointer dereference.

Applied, thanks.

WARNING: multiple messages have this Message-ID (diff)
From: Jakub Kicinski <kuba@kernel.org>
To: Sriranjani P <sriranjani.p@samsung.com>
Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, peppe.cavallaro@st.com,
	alexandre.torgue@foss.st.com, joabreu@synopsys.com,
	davem@davemloft.net, mcoquelin.stm32@gmail.com,
	linux@armlinux.org.uk, boon.leong.ong@intel.com,
	Pankaj Dubey <pankaj.dubey@samsung.com>
Subject: Re: [PATCH] net: stmmac: fix kernel panic due to NULL pointer dereference of mdio_bus_data
Date: Sun, 30 May 2021 14:16:23 -0700	[thread overview]
Message-ID: <20210530141623.33d2d00d@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> (raw)
In-Reply-To: <20210528071056.35252-1-sriranjani.p@samsung.com>

On Fri, 28 May 2021 12:40:56 +0530 Sriranjani P wrote:
> Fixed link does not need mdio bus and in that case mdio_bus_data will
> not be allocated. Before using mdio_bus_data we should check for NULL.
> 
> This patch fix the kernel panic due to NULL pointer dereference of
> mdio_bus_data when it is not allocated.
> 
> Without this patch we do see following kernel crash caused due to kernel
> NULL pointer dereference.

Applied, thanks.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-05-30 21:16 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20210528070406epcas5p3807d9c8f8a68c0c4a75af9951476c1b7@epcas5p3.samsung.com>
2021-05-28  7:10 ` [PATCH] net: stmmac: fix kernel panic due to NULL pointer dereference of mdio_bus_data Sriranjani P
2021-05-28  7:10   ` Sriranjani P
2021-05-30 21:16   ` Jakub Kicinski [this message]
2021-05-30 21:16     ` Jakub Kicinski

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