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| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-12 11:20:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 20:40:13 +0300 |
| commit | e42bcea02b46d9a248d33014ec901f363a77a392 (patch) | |
| tree | 90c445a1c8e3c3fa23995aef9cf537a0b050e21f /drivers | |
| parent | 469cc616e03c22ed3371300dcf82df39902f8642 (diff) | |
| download | linux-e42bcea02b46d9a248d33014ec901f363a77a392.tar.xz | |
libnvdimm/namespace: Fix a potential NULL pointer dereference
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvdimm/namespace_devs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 33a3b23b3db7..e761b29f7160 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -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) |