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From: Thomas Gleixner <tglx@linutronix.de>
To: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: mingo@redhat.com, hpa@zytor.com, jiang.liu@linux.intel.com,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG] x86: apic: Possible null pointer dereference by apic_ack_edge
Date: Sun, 11 Oct 2015 10:30:59 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1510111028510.6097@nanos> (raw)
In-Reply-To: <56197B1B.60304@gmail.com>

On Sat, 10 Oct 2015, William Breathitt Gray wrote:
> In mainline kernel version 4.3-rc4, the following line located in the
> apic_ack_edge function definition can result in a null pointer dereference:
> 
>         irq_complete_move(irqd_cfg(data));
>         
> The irqd_cfg function may return a value of NULL.

data is never NULL when apic_ack_edge() is called.

Thanks,

	tglx

      reply	other threads:[~2015-10-11  8:31 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-10 20:54 William Breathitt Gray
2015-10-11  8:30 ` Thomas Gleixner [this message]

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