Patch "of: return NUMA_NO_NODE from fallback of_node_to_nid()" has been added to the 3.14-stable tree

Patch "of: return NUMA_NO_NODE from fallback of_node_to_nid()" has been added to the 3.14-stable tree

[gregkh]

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

    of: return NUMA_NO_NODE from fallback of_node_to_nid()

to the 3.14-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:
     of-return-numa_no_node-from-fallback-of_node_to_nid.patch
and it can be found in the queue-3.14 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 c8fff7bc5bba6bd59cad40441c189c4efe7190f6 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Date: Wed, 8 Apr 2015 19:59:20 +0300
Subject: of: return NUMA_NO_NODE from fallback of_node_to_nid()

From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>

commit c8fff7bc5bba6bd59cad40441c189c4efe7190f6 upstream.

Node 0 might be offline as well as any other numa node,
in this case kernel cannot handle memory allocation and crashes.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 0c3f061c195c ("of: implement of_node_to_nid as a weak function")
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/of/base.c  |    2 +-
 include/linux/of.h |    5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -77,7 +77,7 @@ EXPORT_SYMBOL(of_n_size_cells);
 #ifdef CONFIG_NUMA
 int __weak of_node_to_nid(struct device_node *np)
 {
-	return numa_node_id();
+	return NUMA_NO_NODE;
 }
 #endif
 
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -517,7 +517,10 @@ static inline const char *of_prop_next_s
 #if defined(CONFIG_OF) && defined(CONFIG_NUMA)
 extern int of_node_to_nid(struct device_node *np);
 #else
-static inline int of_node_to_nid(struct device_node *device) { return 0; }
+static inline int of_node_to_nid(struct device_node *device)
+{
+	return NUMA_NO_NODE;
+}
 #endif
 
 static inline struct device_node *of_find_matching_node(


Patches currently in stable-queue which might be from khlebnikov@yandex-team.ru are

queue-3.14/of-return-numa_no_node-from-fallback-of_node_to_nid.patch