Re: [PATCH] kthread: Mark timer used by delayed kthread works as IRQ safe

From: Tejun Heo
Date: Wed Feb 19 2020 - 10:22:52 EST

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 <grygorii.strashko@xxxxxx>
> Signed-off-by: Petr Mladek <pmladek@xxxxxxxx>
> Tested-by: Grygorii Strashko <grygorii.strashko@xxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>