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Date:   Wed, 19 Feb 2020 10:22:48 -0500
From:   Tejun Heo <>
To:     Petr Mladek <>
Cc:     Andrew Morton <>,
        Grygorii Strashko <>,,,,
        Richard Cochran <>,
        Thomas Gleixner <>,
Subject: Re: [PATCH] kthread: Mark timer used by delayed kthread works as IRQ

On Mon, Feb 17, 2020 at 01:07:09PM +0100, Petr Mladek wrote:
> The timer used by delayed kthread works are IRQ safe because the used
> kthread_delayed_work_timer_fn() is IRQ safe.
> It is properly marked when initialized by KTHREAD_DELAYED_WORK_INIT().
> But TIMER_IRQSAFE flag is missing when initialized by
> kthread_init_delayed_work().
> The missing flag might trigger invalid warning from del_timer_sync()
> when kthread_mod_delayed_work() is called with interrupts disabled.
> Reported-by: Grygorii Strashko <>
> Signed-off-by: Petr Mladek <>
> Tested-by: Grygorii Strashko <>

Acked-by: Tejun Heo <>



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