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| author | Joe Thornber <ejt@redhat.com> | 2021-11-24 20:07:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-22 11:30:51 +0300 |
| commit | 0e21e6cd5eebfc929ac5fa3b97ca2d4ace3cb6a3 (patch) | |
| tree | d4c77d458e6fe01117558a8895d2b653150af065 /drivers/md/persistent-data | |
| parent | f5187a9d52ae3235772fd49530a8276dbefd2a7b (diff) | |
| download | linux-0e21e6cd5eebfc929ac5fa3b97ca2d4ace3cb6a3.tar.xz | |
dm btree remove: fix use after free in rebalance_children()
commit 1b8d2789dad0005fd5e7d35dab26a8e1203fb6da upstream.
Move dm_tm_unlock() after dm_tm_dec().
Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md/persistent-data')
| -rw-r--r-- | drivers/md/persistent-data/dm-btree-remove.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c index 9e4d1212f4c1..63f2baed3c8a 100644 --- a/drivers/md/persistent-data/dm-btree-remove.c +++ b/drivers/md/persistent-data/dm-btree-remove.c @@ -423,9 +423,9 @@ static int rebalance_children(struct shadow_spine *s, memcpy(n, dm_block_data(child), dm_bm_block_size(dm_tm_get_bm(info->tm))); - dm_tm_unlock(info->tm, child); dm_tm_dec(info->tm, dm_block_location(child)); + dm_tm_unlock(info->tm, child); return 0; } |