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Re: [BUG] x86: apic: Possible null pointer dereference by apic_ack_edge

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [BUG] x86: apic: Possible null pointer dereference by apic_ack_edge
Date 2015-10-11 10:40 +0200
Message-ID <qikkG-2XG-15@gated-at.bofh.it> (permalink)
References <qi9pg-3Oh-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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
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[BUG] x86: apic: Possible null pointer dereference by apic_ack_edge William Breathitt Gray <vilhelm.gray@gmail.com> - 2015-10-10 23:00 +0200
  Re: [BUG] x86: apic: Possible null pointer dereference by  apic_ack_edge Thomas Gleixner <tglx@linutronix.de> - 2015-10-11 10:40 +0200

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