* [GIT PULL] membarrier fix
@ 2019-10-02 22:04 Ingo Molnar
2019-10-02 23:00 ` pr-tracker-bot
0 siblings, 1 reply; 2+ messages in thread
From: Ingo Molnar @ 2019-10-02 22:04 UTC (permalink / raw)
To: Linus Torvalds
Cc: linux-kernel, Peter Zijlstra, Thomas Gleixner, Mathieu Desnoyers,
Paul E. McKenney, Andrew Morton
Linus,
Please pull the latest sched-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-urgent-for-linus
# HEAD: 73956fc07dd7b25d4a33ab3fdd6247c60d0b237c membarrier: Fix RCU locking bug caused by faulty merge
Fix a merge bug that resulted in broken locking within
membarrier_private_expedited().
Thanks,
Ingo
------------------>
Peter Zijlstra (1):
membarrier: Fix RCU locking bug caused by faulty merge
kernel/sched/membarrier.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c
index a39bed2c784f..168479a7d61b 100644
--- a/kernel/sched/membarrier.c
+++ b/kernel/sched/membarrier.c
@@ -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);
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [GIT PULL] membarrier fix
2019-10-02 22:04 [GIT PULL] membarrier fix Ingo Molnar
@ 2019-10-02 23:00 ` pr-tracker-bot
0 siblings, 0 replies; 2+ messages in thread
From: pr-tracker-bot @ 2019-10-02 23:00 UTC (permalink / raw)
To: Ingo Molnar
Cc: Linus Torvalds, linux-kernel, Peter Zijlstra, Thomas Gleixner,
Mathieu Desnoyers, Paul E. McKenney, Andrew Morton
The pull request you sent on Thu, 3 Oct 2019 00:04:06 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-urgent-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/714366f87336b2a3f1cca9a6ba8632d6403283ad
Thank you!
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