nvme-fabrics: fix memory leak when parsing host ID option

We use match_strdup() to get a copy of the option string for host ID string, but
we just pass it to uuid_parse() and don't store the string pointer, so we need to
kfree() the string after parsing it.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 2f68befd31bf..eb46967bb0d5 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -738,7 +738,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
                                 ret = -ENOMEM;
                                 goto out;
                         }
-                        if (uuid_parse(p, &hostid)) {
+                        ret = uuid_parse(p, &hostid);
+                        kfree(p);
+                        if (ret) {
                                 pr_err("Invalid hostid %s\n", p);
                                 ret = -EINVAL;
                                 goto out;