diff --git a/drivers/md/dm-pcache/cache.c b/drivers/md/dm-pcache/cache.c
index e9d2b87174d7..e4784578b9af 100644
--- a/drivers/md/dm-pcache/cache.c
+++ b/drivers/md/dm-pcache/cache.c
@@ -251,6 +251,13 @@ static int get_seg_id(struct pcache_cache *cache,
 		} else {
 			*seg_id = cache->cache_info.seg_id;
 		}
+
+		if (*seg_id >= cache_dev->seg_num) {
+			pcache_dev_err(pcache, "invalid segment id %u from cache device (seg_num %u)\n",
+				       *seg_id, cache_dev->seg_num);
+			ret = -EIO;
+			goto err;
+		}
 	}
 	return 0;
 err:
@@ -266,6 +273,13 @@ static int cache_segs_init(struct pcache_cache *cache)
 	int ret;
 	u32 i;
 
+	if (cache_info->n_segs > cache->cache_dev->seg_num) {
+		pcache_dev_err(CACHE_TO_PCACHE(cache),
+			       "cache_info n_segs %u exceeds cache device segments %u\n",
+			       cache_info->n_segs, cache->cache_dev->seg_num);
+		return -EIO;
+	}
+
 	for (i = 0; i < cache_info->n_segs; i++) {
 		ret = get_seg_id(cache, prev_cache_seg, new_cache, &seg_id);
 		if (ret)