* Steven Rostedt <[email protected]> wrote:
> Hi Ingo,
>
> I found a race condition in my kernel which can also be found in
> yours. When I trigger the printk in check_periodic_interval,
> interrupts are turned on in release_console_sem. Unfortunately, this
> can have an interrupt go off there (since they are turned back on
> there) and the write_lock system_time_lock will be taken again, thus
> producing a deadlock.
>
> I'm not sure if this is the best solution, but this was the easiest.
>
> Maybe the CONFIG_PARANOID_GENERIC_TIME should be added in the warnings
> in init/main.c too?
>
> Since interrupts are kept off in the ktimer (hrtimer, whatever) in
> printk, this does not affect those patches. This is a PREEMPT_RT only
> problem.
thanks, applied.
Ingo
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