From: Sergei Shtepa sergei.shtepa@veeam.com
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@vger.kernel.org Signed-off-by: Sergei Shtepa sergei.shtepa@veeam.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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;