diff options
| author | Sergei Shtepa <sergei.shtepa@veeam.com> | 2020-11-11 15:55:46 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2020-12-01 15:43:37 -0500 |
| commit | 89478335718c98557f10470a9bc5c555b9261c4e (patch) | |
| tree | e4243248ed7bea5d95ce51c9eee1e670b9fa0bea /drivers/md | |
| parent | 35d2835d2ac41dc0b3e3469f8e2b08ce9709ace8 (diff) | |
| download | linux-89478335718c98557f10470a9bc5c555b9261c4e.tar.bz2 | |
dm: fix bug with RCU locking in dm_blk_report_zones
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>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index c18fc2548518..98866e725f25 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -476,8 +476,10 @@ static int dm_blk_report_zones(struct gendisk *disk, sector_t sector, 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; |