[PATCH] scsi, block: fix memory leak of sdpk on when gd fails to allocate

Colin King
2017-02-03T19:38:54Z

From: Colin Ian King <colin.king@canonical.com>

On an allocation failure of gd, the current exit path is via out_free_devt
which leaves sdpk still allocated and hence it gets leaked. Fix this by
correcting the order of resource free'ing with a change in the error exit
path labels.

Detected by CoverityScan, CID#1399519 ("Resource Leak")

Fixes: 0dba1314d4f81115dc ("scsi, block: fix duplicate bdi name registration crashes")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/scsi/sd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index cb6e68d..99e1206 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3213,10 +3213,10 @@ static int sd_probe(struct device *dev)
sd_devt = NULL;
out_put:
put_disk(gd);
- out_free:
- kfree(sdkp);
out_free_devt:
kfree(sd_devt);
+ out_free:
+ kfree(sdkp);
out:
scsi_autopm_put_device(sdp);
return error;
--
2.10.2