arch/x86/mm/numa.c: initialize numa_kernel_nodes in numa_clear_kernel_node_hotplug()

On-stack variable numa_kernel_nodes in numa_clear_kernel_node_hotplug()
was not initialized.  So we need to initialize it.

[[email protected]: use NODE_MASK_NONE, per David]
Signed-off-by: Tang Chen <[email protected]>
Tested-by: Gu Zheng <[email protected]>
Reported-by: Dave Jones <[email protected]>
Reported-by: David Rientjes <[email protected]>
Tested-by: Dave Jones <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 81b2750f3666f16d7a42e0699d8dc458530fd7b8..45ec9d72b6dd9bc00f8de826cb4097930543a3b7 100644 (file)
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -565,7 +565,7 @@ static void __init numa_init_array(void)
 static void __init numa_clear_kernel_node_hotplug(void)
 {
        int i, nid;
-       nodemask_t numa_kernel_nodes;
+       nodemask_t numa_kernel_nodes = NODE_MASK_NONE;
        unsigned long start, end;
        struct memblock_type *type = &memblock.reserved;