From: Sergei Shtepa <sergei.shtepa@xxxxxxxxx>
commit 89478335718c98557f10470a9bc5c555b9261c4e upstream.
The dm_get_live_table() function makes RCU read lock so
dm_put_live_table() must be called even if dm_table map is not found.
Fixes: e76239a3748c9 ("block: add a report_zones method")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sergei Shtepa <sergei.shtepa@xxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -491,8 +491,10 @@ static int dm_blk_report_zones(struct ge
return -EAGAIN;
map = dm_get_live_table(md, &srcu_idx);
- if (!map)
- return -EIO;
+ if (!map) {
+ ret = -EIO;
+ goto out;
+ }
do {
struct dm_target *tgt;
