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Date:   Sun,  8 Oct 2017 19:43:31 +1100 (AEDT)
From:   Michael Ellerman <>
To:     Kautuk Consul <>,
        Benjamin Herrenschmidt <>,
        Paul Mackerras <>,
        Anton Blanchard <>,
        Cyril Bur <>,
        Michael Neuling <>,
        Anshuman Khandual <>
        Kautuk Consul <>
Subject: Re: [1/1] powerpc: get_wchan(): solve possible race scenario due to parallel wakeup

On Tue, 2016-04-19 at 10:18:21 UTC, Kautuk Consul wrote:
> Add a check for p->state == TASK_RUNNING so that any wake-ups on
> task_struct p in the interim lead to 0 being returned by get_wchan().
> Signed-off-by: Kautuk Consul <>

Applied to powerpc next, thanks.


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