Commit 714366f8 authored Oct 02, 2019 by Linus Torvalds

Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull membarrier fix from Ingo Molnar:
 "Fix broken locking within membarrier_private_expedited()"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  membarrier: Fix RCU locking bug caused by faulty merge

parents 65aa35c9 73956fc0

kernel/sched/membarrier.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -174,7 +174,6 @@ static int membarrier_private_expedited(int flags)
		*/
		if (cpu == raw_smp_processor_id())
		continue;
		rcu_read_lock();
		p = rcu_dereference(cpu_rq(cpu)->curr);
		if (p && p->mm == mm)
		__cpumask_set_cpu(cpu, tmpmask);

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