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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
This commit is contained in:
Linus Torvalds 2019-10-02 15:52:56 -07:00
parent 65aa35c93c 73956fc07d
commit 714366f873
1 changed files with 0 additions and 1 deletions
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kernel/sched/membarrier.c
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@ -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);