Merge tag 'for-5.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Fixes and improvements to dm btree and dm space map code in
   persistent-data library used by thinp and cache.

 - Update DM integrity to use struct_group() to zero struct
   journal_sector.

 - Update DM sysfs to use default_groups in kobj_type.

* tag 'for-5.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm sysfs: use default_groups in kobj_type
  dm integrity: Use struct_group() to zero struct journal_sector
  dm space map common: add bounds check to sm_ll_lookup_bitmap()
  dm btree: add a defensive bounds check to insert_at()
  dm btree remove: change a bunch of BUG_ON() calls to proper errors
  dm btree spine: eliminate duplicate le32_to_cpu() in node_check()
  dm btree spine: remove extra node_check function declaration

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c
index 4a6a2a9b4eb4..bfbfa750e016 100644
--- a/drivers/md/persistent-data/dm-space-map-common.c
+++ b/drivers/md/persistent-data/dm-space-map-common.c
@@ -283,6 +283,11 @@ int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result)
 	struct disk_index_entry ie_disk;
 	struct dm_block *blk;
 
+	if (b >= ll->nr_blocks) {
+		DMERR_LIMIT("metadata block out of bounds");
+		return -EINVAL;
+	}
+
 	b = do_div(index, ll->entries_per_block);
 	r = ll->load_ie(ll, index, &ie_disk);
 	if (r < 0)