Commit 55c1fc0a authored by Kangjie Lu's avatar Kangjie Lu Committed by Dan Williams
Browse files

libnvdimm/namespace: Fix a potential NULL pointer dereference



In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.

Signed-off-by: default avatarKangjie Lu <kjlu@umn.edu>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 351f339f
......@@ -2249,9 +2249,12 @@ static struct device *create_namespace_blk(struct nd_region *nd_region,
if (!nsblk->uuid)
goto blk_err;
memcpy(name, nd_label->name, NSLABEL_NAME_LEN);
if (name[0])
if (name[0]) {
nsblk->alt_name = kmemdup(name, NSLABEL_NAME_LEN,
GFP_KERNEL);
if (!nsblk->alt_name)
goto blk_err;
}
res = nsblk_add_resource(nd_region, ndd, nsblk,
__le64_to_cpu(nd_label->dpa));
if (!res)
......
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