Merge tag 'unicode-next-6.8' of git://git.kernel.org/pub/scm/linux/ke…

…rnel/git/krisman/unicode

Pull unicode updates from Gabriel Krisman Bertazi:
 "Other than the update to MAINTAINERS, this PR has only a fix to stop
  ecryptfs from inadvertently mounting case-insensitive filesystems that
  it cannot handle, which would otherwise caused post-mount failures"

* tag 'unicode-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode:
  MAINTAINERS: update unicode maintainer e-mail address
  ecryptfs: Reject casefold directory inodes

MAINTAINERS

@@ -22283,7 +22283,7 @@ F:	drivers/usb/common/ulpi.c
 F:	include/linux/ulpi/
 
 UNICODE SUBSYSTEM
-M:	Gabriel Krisman Bertazi <krisman@collabora.com>
+M:	Gabriel Krisman Bertazi <krisman@kernel.org>
 L:	[email protected]
 S:	Supported
 F:	fs/unicode/

fs/ecryptfs/inode.c

@@ -78,6 +78,14 @@ static struct inode *__ecryptfs_get_inode(struct inode *lower_inode,
 
 	if (lower_inode->i_sb != ecryptfs_superblock_to_lower(sb))
 		return ERR_PTR(-EXDEV);
+
+	/* Reject dealing with casefold directories. */
+	if (IS_CASEFOLDED(lower_inode)) {
+		pr_err_ratelimited("%s: Can't handle casefolded directory.\n",
+				   __func__);
+		return ERR_PTR(-EREMOTE);
+	}
+
 	if (!igrab(lower_inode))
 		return ERR_PTR(-ESTALE);
 	inode = iget5_locked(sb, (unsigned long)lower_inode,