4.14-stable patches

added patches:
	membarrier-disable-preemption-when-calling-smp_call_function_many.patch

diff --git a/queue-4.14/membarrier-disable-preemption-when-calling-smp_call_function_many.patch b/queue-4.14/membarrier-disable-preemption-when-calling-smp_call_function_many.patch
new file mode 100644 (file)
index 0000000..71407cc
--- /dev/null
+++ b/queue-4.14/membarrier-disable-preemption-when-calling-smp_call_function_many.patch
@@ -0,0 +1,47 @@
+From 541676078b52f365f53d46ee5517d305cd1b6350 Mon Sep 17 00:00:00 2001
+From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Date: Fri, 15 Dec 2017 14:23:10 -0500
+Subject: membarrier: Disable preemption when calling smp_call_function_many()
+
+From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+
+commit 541676078b52f365f53d46ee5517d305cd1b6350 upstream.
+
+smp_call_function_many() requires disabling preemption around the call.
+
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Cc: Andrea Parri <parri.andrea@gmail.com>
+Cc: Andrew Hunter <ahh@google.com>
+Cc: Avi Kivity <avi@scylladb.com>
+Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+Cc: Boqun Feng <boqun.feng@gmail.com>
+Cc: Dave Watson <davejwatson@fb.com>
+Cc: H. Peter Anvin <hpa@zytor.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Maged Michael <maged.michael@gmail.com>
+Cc: Michael Ellerman <mpe@ellerman.id.au>
+Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com>
+Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+Cc: Paul Mackerras <paulus@samba.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: http://lkml.kernel.org/r/20171215192310.25293-1-mathieu.desnoyers@efficios.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ kernel/sched/membarrier.c |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/kernel/sched/membarrier.c
++++ b/kernel/sched/membarrier.c
+@@ -89,7 +89,9 @@ static int membarrier_private_expedited(
+               rcu_read_unlock();
+       }
+       if (!fallback) {
++              preempt_disable();
+               smp_call_function_many(tmpmask, ipi_mb, NULL, 1);
++              preempt_enable();
+               free_cpumask_var(tmpmask);
+       }
+       cpus_read_unlock();

diff --git a/queue-4.14/series b/queue-4.14/series
index d1afb38c9535f9fb6883d23133fc3b46ec413b69..c995b958059e435e95a2430850d02b9206f6ae29 100644 (file)
--- a/queue-4.14/series
+++ b/queue-4.14/series
@@ -51,3 +51,4 @@ ipv6-sr-fix-tlvs-not-being-copied-using-setsockopt.patch
 mlxsw-spectrum-relax-sanity-checks-during-enslavement.patch
 sfp-fix-sfp-bus-oops-when-removing-socket-upstream.patch
 revert-revert-xfrm-fix-stack-out-of-bounds-read-in-xfrm_state_find.patch
+membarrier-disable-preemption-when-calling-smp_call_function_many.patch