Merge tag 'for-linus-2020-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux

Pull data race annotation from Christian Brauner:
"This contains an annotation patch for a data race in copy_process()
reported by KCSAN when reading and writing nr_threads.

The data race is intentional and benign. This is obvious from the
comment above the relevant code and based on general consensus when
discussing this issue. So simply using data_race() to annotate this as
an intentional race seems the best option"

* tag 'for-linus-2020-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
fork: annotate data race in copy_process()

kernel/fork.c

···
 	 * to stop root fork bombs.
 	 */
 	retval = -EAGAIN;
-	if (nr_threads >= max_threads)
+	if (data_race(nr_threads >= max_threads))
 		goto bad_fork_cleanup_count;
 
 	delayacct_tsk_init(p);	/* Must remain after dup_task_struct() */