Miklos Szeredi eb3a04a851 ovl: don't allow datadir only ... In theory overlayfs could support upper layer directly referring to a data layer, but there's no current use case for this. Originally, when data-only layers were introduced, this wasn't allowed, only introduced by the "datadir+" feature, but without actually handling this case, resulting in an Oops. Fix by disallowing datadir without lowerdir. Reported-by: Giuseppe Scrivano <gscrivan@redhat.com> Fixes: 24e16e385f ("ovl: add support for appending lowerdirs one by one") Cc: <stable@vger.kernel.org> # v6.7 Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Alexander Larsson <alexl@redhat.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2025-04-07 11:22:49 +02:00
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copy_up.c	ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up	2025-02-19 18:06:53 +01:00
dir.c	VFS: Change vfs_mkdir() to return the dentry.	2025-03-05 11:52:50 +01:00
export.c	ovl: support encoding fid from inode with no alias	2025-01-06 15:43:55 +01:00
file.c	ovl: convert ovl_real_fdget() callers to ovl_real_file()	2024-11-15 08:56:49 +01:00
inode.c	overlayfs updates for 6.13	2024-11-22 20:55:42 -08:00
Kconfig	fs: prepare for stackable filesystems backing file helpers	2023-12-23 16:35:08 +02:00
Makefile	ovl: Move xattr support to new xattrs.c file	2023-10-31 00:12:59 +02:00
namei.c	assorted stuff for this merge window	2025-02-01 15:07:56 -08:00
overlayfs.h	VFS: Change vfs_mkdir() to return the dentry.	2025-03-05 11:52:50 +01:00
ovl_entry.h	ovl: mark xwhiteouts directory with overlay.opaque='x'	2024-01-23 12:39:48 +02:00
params.c	ovl: allow to specify override credentials	2025-02-19 14:32:09 +01:00
params.h	ovl: store and show the user provided lowerdir mount option	2023-10-31 00:13:02 +02:00
readdir.c	ovl: use wrapper ovl_revert_creds()	2024-11-11 10:45:04 +01:00
super.c	ovl: don't allow datadir only	2025-04-07 11:22:49 +02:00
util.c	tree-wide: s/revert_creds_light()/revert_creds()/g	2024-12-02 11:25:09 +01:00
xattrs.c	ovl: use wrapper ovl_revert_creds()	2024-11-11 10:45:04 +01:00