Merge tag 'fixes_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull UDF and ext2 fixes from Jan Kara:

 - Rewrite of udf directory iteration code to address multiple syzbot
   reports

 - Fixes to udf extent handling and block mapping code to address
   several syzbot reports and filesystem corruption issues uncovered by
   fsx & fsstress

 - Convert udf to kmap_local()

 - Add sanity checks when loading udf bitmaps

 - Drop old VARCONV support which I've never seen used and which was
   broken for quite some years without anybody noticing

 - Finish conversion of ext2 to kmap_local()

 - One fix to mpage_writepages() on which other udf fixes depend

* tag 'fixes_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (78 commits)
  udf: Avoid directory type conversion failure due to ENOMEM
  udf: Use unsigned variables for size calculations
  udf: remove reporting loc in debug output
  udf: Check consistency of Space Bitmap Descriptor
  udf: Fix file counting in LVID
  udf: Limit file size to 4TB
  udf: Don't return bh from udf_expand_dir_adinicb()
  udf: Convert udf_expand_file_adinicb() to avoid kmap_atomic()
  udf: Convert udf_adinicb_writepage() to memcpy_to_page()
  udf: Switch udf_adinicb_readpage() to kmap_local_page()
  udf: Move udf_adinicb_readpage() to inode.c
  udf: Mark aops implementation static
  udf: Switch to single address_space_operations
  udf: Add handling of in-ICB files to udf_bmap()
  udf: Convert all file types to use udf_write_end()
  udf: Convert in-ICB files to use udf_write_begin()
  udf: Convert in-ICB files to use udf_direct_IO()
  udf: Convert in-ICB files to use udf_writepages()
  udf: Unify .read_folio for normal and in-ICB files
  udf: Fix off-by-one error when discarding preallocation
  ...

3 files changed, 25 insertions, 18 deletions

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index e5cbc27ba459..4a6955a0a116 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -461,9 +461,9 @@ static int ext2_handle_dirsync(struct inode *dir)
 	return err;
 }
 
-void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
-		   struct page *page, void *page_addr, struct inode *inode,
-		   int update_times)
+int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
+		struct page *page, void *page_addr, struct inode *inode,
+		bool update_times)
 {
 	loff_t pos = page_offset(page) +
 			(char *) de - (char *) page_addr;
@@ -472,7 +472,10 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 
 	lock_page(page);
 	err = ext2_prepare_chunk(page, pos, len);
-	BUG_ON(err);
+	if (err) {
+		unlock_page(page);
+		return err;
+	}
 	de->inode = cpu_to_le32(inode->i_ino);
 	ext2_set_de_type(de, inode);
 	ext2_commit_chunk(page, pos, len);
@@ -480,7 +483,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 		dir->i_mtime = dir->i_ctime = current_time(dir);
 	EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL;
 	mark_inode_dirty(dir);
-	ext2_handle_dirsync(dir);
+	return ext2_handle_dirsync(dir);
 }
 
 /*
@@ -646,7 +649,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
 		unlock_page(page);
 		goto fail;
 	}
-	kaddr = kmap_atomic(page);
+	kaddr = kmap_local_page(page);
 	memset(kaddr, 0, chunk_size);
 	de = (struct ext2_dir_entry_2 *)kaddr;
 	de->name_len = 1;
@@ -661,7 +664,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
 	de->inode = cpu_to_le32(parent->i_ino);
 	memcpy (de->name, "..\0", 4);
 	ext2_set_de_type (de, inode);
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 	ext2_commit_chunk(page, 0, chunk_size);
 	err = ext2_handle_dirsync(inode);
 fail:
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 5b52306e2e95..cb78d7dcfb95 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -734,8 +734,9 @@ extern int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page,
 			     char *kaddr);
 extern int ext2_empty_dir (struct inode *);
 extern struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p, void **pa);
-extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, void *,
-			  struct inode *, int);
+int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
+		struct page *page, void *page_addr, struct inode *inode,
+		bool update_times);
 static inline void ext2_put_page(struct page *page, void *page_addr)
 {
 	kunmap_local(page_addr);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 81808e3d11c1..7f5dfa87cc95 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -370,8 +370,11 @@ static int ext2_rename (struct mnt_idmap * idmap,
 			err = PTR_ERR(new_de);
 			goto out_dir;
 		}
-		ext2_set_link(new_dir, new_de, new_page, page_addr, old_inode, 1);
+		err = ext2_set_link(new_dir, new_de, new_page, page_addr,
+				    old_inode, true);
 		ext2_put_page(new_page, page_addr);
+		if (err)
+			goto out_dir;
 		new_inode->i_ctime = current_time(new_inode);
 		if (dir_de)
 			drop_nlink(new_inode);
@@ -394,24 +397,24 @@ static int ext2_rename (struct mnt_idmap * idmap,
 	ext2_delete_entry(old_de, old_page, old_page_addr);
 
 	if (dir_de) {
-		if (old_dir != new_dir)
-			ext2_set_link(old_inode, dir_de, dir_page,
-				      dir_page_addr, new_dir, 0);
+		if (old_dir != new_dir) {
+			err = ext2_set_link(old_inode, dir_de, dir_page,
+					    dir_page_addr, new_dir, false);
 
+		}
 		ext2_put_page(dir_page, dir_page_addr);
 		inode_dec_link_count(old_dir);
 	}
 
+out_old:
 	ext2_put_page(old_page, old_page_addr);
-	return 0;
+out:
+	return err;
 
 out_dir:
 	if (dir_de)
 		ext2_put_page(dir_page, dir_page_addr);
-out_old:
-	ext2_put_page(old_page, old_page_addr);
-out:
-	return err;
+	goto out_old;
 }
 
 const struct inode_operations ext2_dir_inode_operations = {