diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index cc2d268e2cd7a916a08a4b2b6892090b8b243acd..d24ecbf938b6c2257861490cb708a3cf965c0a61 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3101,7 +3101,7 @@ int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot,
 /* file-item.c */
 struct btrfs_dio_private;
 int btrfs_del_csums(struct btrfs_trans_handle *trans,
-		    struct btrfs_fs_info *fs_info, u64 bytenr, u64 len);
+		    struct btrfs_root *root, u64 bytenr, u64 len);
 blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst);
 blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio,
 			      u64 logical_offset);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4bda5c09cdfe70b1f3d4c96976bc31773f3f753a..47ca1ebda056d4af270f9790f73ed01596c827a5 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2492,8 +2492,8 @@ static int cleanup_ref_head(struct btrfs_trans_handle *trans,
 		btrfs_pin_extent(fs_info, head->bytenr,
 				 head->num_bytes, 1);
 		if (head->is_data) {
-			ret = btrfs_del_csums(trans, fs_info, head->bytenr,
-					      head->num_bytes);
+			ret = btrfs_del_csums(trans, fs_info->csum_root,
+					      head->bytenr, head->num_bytes);
 		}
 	}
 
@@ -6880,7 +6880,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
 		btrfs_release_path(path);
 
 		if (is_data) {
-			ret = btrfs_del_csums(trans, info, bytenr, num_bytes);
+			ret = btrfs_del_csums(trans, info->csum_root, bytenr,
+					      num_bytes);
 			if (ret) {
 				btrfs_abort_transaction(trans, ret);
 				goto out;
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index ba74827beb32da1f3917258e389554ec0d7694aa..4cf2817ab120287765ac31dcbc498a8eb1a41a38 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -577,9 +577,9 @@ static noinline void truncate_one_csum(struct btrfs_fs_info *fs_info,
  * range of bytes.
  */
 int btrfs_del_csums(struct btrfs_trans_handle *trans,
-		    struct btrfs_fs_info *fs_info, u64 bytenr, u64 len)
+		    struct btrfs_root *root, u64 bytenr, u64 len)
 {
-	struct btrfs_root *root = fs_info->csum_root;
+	struct btrfs_fs_info *fs_info = trans->fs_info;
 	struct btrfs_path *path;
 	struct btrfs_key key;
 	u64 end_byte = bytenr + len;
@@ -589,6 +589,9 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
 	u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
 	int blocksize_bits = fs_info->sb->s_blocksize_bits;
 
+	ASSERT(root == fs_info->csum_root ||
+	       root->root_key.objectid == BTRFS_TREE_LOG_OBJECTID);
+
 	path = btrfs_alloc_path();
 	if (!path)
 		return -ENOMEM;
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 4d4f57f0f08c864020268a489ff69f99edf4d437..dbe26468bc90f64cd100e58fd9bd1a9aa6893c24 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -795,7 +795,8 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
 						struct btrfs_ordered_sum,
 						list);
 				if (!ret)
-					ret = btrfs_del_csums(trans, fs_info,
+					ret = btrfs_del_csums(trans,
+							      fs_info->csum_root,
 							      sums->bytenr,
 							      sums->len);
 				if (!ret)
@@ -3866,6 +3867,28 @@ static int log_inode_item(struct btrfs_trans_handle *trans,
 	return 0;
 }
 
+static int log_csums(struct btrfs_trans_handle *trans,
+		     struct btrfs_root *log_root,
+		     struct btrfs_ordered_sum *sums)
+{
+	int ret;
+
+	/*
+	 * Due to extent cloning, we might have logged a csum item that covers a
+	 * subrange of a cloned extent, and later we can end up logging a csum
+	 * item for a larger subrange of the same extent or the entire range.
+	 * This would leave csum items in the log tree that cover the same range
+	 * and break the searches for checksums in the log tree, resulting in
+	 * some checksums missing in the fs/subvolume tree. So just delete (or
+	 * trim and adjust) any existing csum items in the log for this range.
+	 */
+	ret = btrfs_del_csums(trans, log_root, sums->bytenr, sums->len);
+	if (ret)
+		return ret;
+
+	return btrfs_csum_file_blocks(trans, log_root, sums);
+}
+
 static noinline int copy_items(struct btrfs_trans_handle *trans,
 			       struct btrfs_inode *inode,
 			       struct btrfs_path *dst_path,
@@ -4011,7 +4034,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 						   struct btrfs_ordered_sum,
 						   list);
 		if (!ret)
-			ret = btrfs_csum_file_blocks(trans, log, sums);
+			ret = log_csums(trans, log, sums);
 		list_del(&sums->list);
 		kfree(sums);
 	}
@@ -4231,7 +4254,7 @@ static int log_extent_csums(struct btrfs_trans_handle *trans,
 						   struct btrfs_ordered_sum,
 						   list);
 		if (!ret)
-			ret = btrfs_csum_file_blocks(trans, log_root, sums);
+			ret = log_csums(trans, log_root, sums);
 		list_del(&sums->list);
 		kfree(sums);
 	}