[PATCH 1/1] bcache: fix possible memory leak in bch_cached_dev_run()

[Coly Li]

From: Wei Yongjun <weiyongj...@huawei.com>

memory malloced in bch_cached_dev_run() and should be freed before
leaving from the error handling cases, otherwise it will cause
memory leak.

Fixes: 0b13efecf5f2 ("bcache: add return value check to bch_cached_dev_run()")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
Signed-off-by: Coly Li <col...@suse.de>
---
 drivers/md/bcache/super.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 26e374fbf57c..20ed838e9413 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -931,6 +931,9 @@ int bch_cached_dev_run(struct cached_dev *dc)
        if (dc->io_disable) {
                pr_err("I/O disabled on cached dev %s",
                       dc->backing_dev_name);
+               kfree(env[1]);
+               kfree(env[2]);
+               kfree(buf);
                return -EIO;
        }
 
-- 
2.16.4