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Date:   Sat, 15 Oct 2016 17:35:06 -0400 (EDT)
From:   David Miller <>
Subject: Re: [PATCH] net: qcom/emac: disable interrupts before calling

From: Timur Tabi <>
Date: Fri, 14 Oct 2016 14:14:35 -0500

> There is a race condition that can occur if EMAC interrupts are
> enabled when phy_disconnect() is called.  phy_disconnect() sets
> adjust_link to NULL.  When an interrupt occurs, the ISR might
> call phy_mac_interrupt(), which wakes up the workqueue function
> phy_state_machine().  This function might reference adjust_link,
> thereby causing a null pointer exception.
> Signed-off-by: Timur Tabi <>


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