Re: [PATCH v3 4/7] rcu: handle unstable rdp in rcu_read_unlock_strict()

[Frederic Weisbecker]

Le Thu, Dec 12, 2024 at 08:06:55PM -0800, Ankur Arora a écrit :
> rcu_read_unlock_strict() can be called with preemption enabled
> which can make for an unstable rdp and a racy norm value.
> 
> Fix this by dropping the preempt-count in __rcu_read_unlock()
> after the call to rcu_read_unlock_strict(), adjusting the
> preempt-count check appropriately.
> 
> Suggested-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
> Signed-off-by: Ankur Arora <ankur.a.arora@xxxxxxxxxx>

Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx>