In error case, we do not free the memory for blk_symlink_name.
Do it by free the memory in error case, and set to NULL
afterwards.
Also fix the condition in rnbd_clt_remove_dev_symlink.
Fixes: 64e8a6ece1a5 ("block/rnbd-clt: Dynamically alloc buffer for pathname & blk_symlink_name")
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
Reviewed-by: Md Haris Iqbal <haris.iqbal@xxxxxxxxxxxxxxx>
---
drivers/block/rnbd/rnbd-clt-sysfs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/block/rnbd/rnbd-clt-sysfs.c b/drivers/block/rnbd/rnbd-clt-sysfs.c
index a7caeedeb198..d4aa6bfc9555 100644
--- a/drivers/block/rnbd/rnbd-clt-sysfs.c
+++ b/drivers/block/rnbd/rnbd-clt-sysfs.c
@@ -432,7 +432,7 @@ void rnbd_clt_remove_dev_symlink(struct rnbd_clt_dev *dev)
* i.e. rnbd_clt_unmap_dev_store() leading to a sysfs warning because
* of sysfs link already was removed already.
*/
- if (strlen(dev->blk_symlink_name) && try_module_get(THIS_MODULE)) {
+ if (dev->blk_symlink_name && try_module_get(THIS_MODULE)) {
sysfs_remove_link(rnbd_devs_kobj, dev->blk_symlink_name);
kfree(dev->blk_symlink_name);
module_put(THIS_MODULE);
@@ -521,7 +521,8 @@ static int rnbd_clt_add_dev_symlink(struct rnbd_clt_dev *dev)
return 0;
out_err:
- dev->blk_symlink_name[0] = '\0';
+ kfree(dev->blk_symlink_name);
+ dev->blk_symlink_name = NULL ;
return ret;
}
--
2.25.1
