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| author | Joe Thornber <ejt@redhat.com> | 2021-11-24 12:07:39 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-22 09:17:59 +0100 |
| commit | b03abd0aa09c05099f537cb05b8460c4298f0861 (patch) | |
| tree | 54ef83ee7d5b99225d2a63afcd8680534921122e /drivers | |
| parent | 724b98b292187634e45af4e14a0803203e8ac62a (diff) | |
| download | linux-stable-b03abd0aa09c05099f537cb05b8460c4298f0861.tar.gz linux-stable-b03abd0aa09c05099f537cb05b8460c4298f0861.tar.bz2 linux-stable-b03abd0aa09c05099f537cb05b8460c4298f0861.zip | |
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')
| -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; } |