From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Wed, 8 May 2019 14:06:21 +0000 (+0200)
Subject: 5.1-stable patches
X-Git-Tag: v4.9.175~42
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=abee49c1a89293b4b22232935d30e6653d09de24;p=thirdparty%2Fkernel%2Fstable-queue.git

5.1-stable patches

added patches:
	drivers-hv-vmbus-remove-the-undesired-put_cpu_ptr-in-hv_synic_cleanup.patch
	series
---

diff --git a/queue-5.1/drivers-hv-vmbus-remove-the-undesired-put_cpu_ptr-in-hv_synic_cleanup.patch b/queue-5.1/drivers-hv-vmbus-remove-the-undesired-put_cpu_ptr-in-hv_synic_cleanup.patch
new file mode 100644
index 00000000000..8c06e1139dd
--- /dev/null
+++ b/queue-5.1/drivers-hv-vmbus-remove-the-undesired-put_cpu_ptr-in-hv_synic_cleanup.patch
@@ -0,0 +1,34 @@
+From a0033bd1eae4650b69be07c17cb87393da584563 Mon Sep 17 00:00:00 2001
+From: Dexuan Cui <decui@microsoft.com>
+Date: Fri, 12 Apr 2019 23:34:45 +0000
+Subject: Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup()
+
+From: Dexuan Cui <decui@microsoft.com>
+
+commit a0033bd1eae4650b69be07c17cb87393da584563 upstream.
+
+With CONFIG_DEBUG_PREEMPT=y, the put_cpu_ptr() triggers an underflow
+warning in preempt_count_sub().
+
+Fixes: 37cdd991fac8 ("vmbus: put related per-cpu variable together")
+Cc: stable@vger.kernel.org
+Cc: Stephen Hemminger <sthemmin@microsoft.com>
+Signed-off-by: Dexuan Cui <decui@microsoft.com>
+Reviewed-by: Michael Kelley <mikelley@microsoft.com>
+Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/hv/hv.c |    1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/hv/hv.c
++++ b/drivers/hv/hv.c
+@@ -408,7 +408,6 @@ int hv_synic_cleanup(unsigned int cpu)
+ 
+ 		clockevents_unbind_device(hv_cpu->clk_evt, cpu);
+ 		hv_ce_shutdown(hv_cpu->clk_evt);
+-		put_cpu_ptr(hv_cpu);
+ 	}
+ 
+ 	hv_get_synint_state(VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
diff --git a/queue-5.1/series b/queue-5.1/series
new file mode 100644
index 00000000000..c513e8441fd
--- /dev/null
+++ b/queue-5.1/series
@@ -0,0 +1 @@
+drivers-hv-vmbus-remove-the-undesired-put_cpu_ptr-in-hv_synic_cleanup.patch