On Thu, 2016-05-12 at 22:07 +0200, Paolo Abeni wrote:

> > > static inline bool ksoftirqd_running(void)
> > > {
> > >   return __this_cpu_read(ksoftirqd)->state == TASK_RUNNING;
> 
> here something like:
> 
>       struct task_struct *tsk = __this_cpu_read(ksoftirqd);
>         return tsk && (tsk->state == TASK_RUNNING);
> 
> is needed since __this_cpu_read(ksoftirqd) can be NULL on boot.

Indeed I've seen this but only when backporting to an older linux kernel
this morning.

Have you got this with current linux kernel ?


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