Patch "powerpc/pseries: Fix of_node_put() underflow during reconfig remove" has been added to the 4.9-stable tree

Patch "powerpc/pseries: Fix of_node_put() underflow during reconfig remove" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    powerpc/pseries: Fix of_node_put() underflow during reconfig remove

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     powerpc-pseries-fix-of_node_put-underflow-during-reconfig-remove.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 4fd1bd443e80b12f0a01a45fb9a793206b41cb72 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <lvivier@redhat.com>
Date: Fri, 21 Jul 2017 16:51:39 +0200
Subject: powerpc/pseries: Fix of_node_put() underflow during reconfig remove

From: Laurent Vivier <lvivier@redhat.com>

commit 4fd1bd443e80b12f0a01a45fb9a793206b41cb72 upstream.

As for commit 68baf692c435 ("powerpc/pseries: Fix of_node_put()
underflow during DLPAR remove"), the call to of_node_put() must be
removed from pSeries_reconfig_remove_node().

dlpar_detach_node() and pSeries_reconfig_remove_node() both call
of_detach_node(), and thus the node should not be released in both
cases.

Fixes: 0829f6d1f69e ("of: device_node kobject lifecycle fixes")
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/platforms/pseries/reconfig.c |    1 -
 1 file changed, 1 deletion(-)

--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -82,7 +82,6 @@ static int pSeries_reconfig_remove_node(
 
 	of_detach_node(np);
 	of_node_put(parent);
-	of_node_put(np); /* Must decrement the refcount */
 	return 0;
 }
 


Patches currently in stable-queue which might be from lvivier@redhat.com are

queue-4.9/powerpc-pseries-fix-of_node_put-underflow-during-reconfig-remove.patch