Merge tag 'rcu/fixes-for-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU fix from Joel Fernandes:
 "We recently got a report of a crash [1] with misuse of call_rcu().

  Instead of crashing the kernel, a warning and graceful return is
  better:

   - rcu: Return early if callback is not specified (Uladzislau Rezki)"

Link: https://lore.kernel.org/all/aEnVuzK7VhGSizWj@pc636/ [1]

* tag 'rcu/fixes-for-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
  rcu: Return early if callback is not specified