Merge branch 'linus' into sched/core

Conflicts:
	kernel/Makefile

1 files changed, 7 insertions, 0 deletions

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 66fad3fc02b..ba6b0f5f7fa 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -592,6 +592,8 @@ static void free_unmap_vmap_area_addr(unsigned long addr)
 
 #define VMAP_BLOCK_SIZE		(VMAP_BBMAP_BITS * PAGE_SIZE)
 
+static bool vmap_initialized __read_mostly = false;
+
 struct vmap_block_queue {
 	spinlock_t lock;
 	struct list_head free;
@@ -828,6 +830,9 @@ void vm_unmap_aliases(void)
 	int cpu;
 	int flush = 0;
 
+	if (unlikely(!vmap_initialized))
+		return;
+
 	for_each_possible_cpu(cpu) {
 		struct vmap_block_queue *vbq = &per_cpu(vmap_block_queue, cpu);
 		struct vmap_block *vb;
@@ -942,6 +947,8 @@ void __init vmalloc_init(void)
 		INIT_LIST_HEAD(&vbq->dirty);
 		vbq->nr_dirty = 0;
 	}
+
+	vmap_initialized = true;
 }
 
 void unmap_kernel_range(unsigned long addr, unsigned long size)