Charalampos Mitrodimas ba6cc29351 debugfs: fix mount options not being applied ... Mount options (uid, gid, mode) are silently ignored when debugfs is mounted. This is a regression introduced during the conversion to the new mount API. When the mount API conversion was done, the parsed options were never applied to the superblock when it was reused. As a result, the mount options were ignored when debugfs was mounted. Fix this by following the same pattern as the tracefs fix in commit e4d32142d1 ("tracing: Fix tracefs mount options"). Call debugfs_reconfigure() in debugfs_get_tree() to apply the mount options to the superblock after it has been created or reused. As an example, with the bug the "mode" mount option is ignored: $ mount -o mode=0666 -t debugfs debugfs /tmp/debugfs_test $ mount | grep debugfs_test debugfs on /tmp/debugfs_test type debugfs (rw,relatime) $ ls -ld /tmp/debugfs_test drwx------ 25 root root 0 Aug 4 14:16 /tmp/debugfs_test With the fix applied, it works as expected: $ mount -o mode=0666 -t debugfs debugfs /tmp/debugfs_test $ mount | grep debugfs_test debugfs on /tmp/debugfs_test type debugfs (rw,relatime,mode=666) $ ls -ld /tmp/debugfs_test drw-rw-rw- 37 root root 0 Aug 2 17:28 /tmp/debugfs_test Fixes: a20971c187 ("vfs: Convert debugfs to use the new mount API") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220406 Cc: stable <stable@kernel.org> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Charalampos Mitrodimas <charmitro@posteo.net> Link: https://lore.kernel.org/r/20250816-debugfs-mount-opts-v3-1-d271dad57b5b@posteo.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-08-17 12:22:25 +02:00
..
9p	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
adfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
affs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
afs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
autofs	new helper: set_default_d_op()	2025-06-10 22:21:16 -04:00
bcachefs	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
befs
bfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
btrfs	for-6.17-fix-tag	2025-08-06 15:52:56 +03:00
cachefiles	vfs-6.17-rc1.misc	2025-07-28 11:22:56 -07:00
ceph	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
coda	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
configfs	configfs: use DCACHE_DONTCACHE	2025-06-11 13:41:05 -04:00
cramfs	mm: remove callers of pfn_t functionality	2025-07-09 22:42:19 -07:00
crypto	fscrypt: Remove gfp_t argument from fscrypt_encrypt_block_inplace()	2025-07-10 12:33:13 -07:00
debugfs	debugfs: fix mount options not being applied	2025-08-17 12:22:25 +02:00
devpts	devpts, sunrpc, hostfs: don't bother with ->d_op	2025-06-11 13:40:04 -04:00
dlm	treewide, timers: Rename from_timer() to timer_container_of()	2025-06-08 09:07:37 +02:00
ecryptfs	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
efivarfs	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
efs
erofs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
exfat	exfat: add cluster chain loop check for dir	2025-08-01 08:34:23 +09:00
exportfs	exportfs: use lookup_one_unlocked()	2025-06-11 13:44:15 +02:00
ext2	\n	2025-07-28 16:16:09 -07:00
ext4	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
f2fs	f2fs-for-6.17-rc1	2025-08-04 16:27:21 -07:00
fat	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
freevxfs
fuse	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
gfs2	vfs-6.17-rc1.iomap	2025-07-28 16:09:03 -07:00
hfs	hfs/hfsplus updates for v6.17	2025-07-28 16:17:44 -07:00
hfsplus	hfs/hfsplus updates for v6.17	2025-07-28 16:17:44 -07:00
hostfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
hpfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
hugetlbfs	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
iomap	vfs-6.17-rc1.iomap	2025-07-28 16:09:03 -07:00
isofs	Current exclusion rules for ->d_flags stores are rather unpleasant.	2025-07-28 09:17:57 -07:00
jbd2	treewide, timers: Rename from_timer() to timer_container_of()	2025-06-08 09:07:37 +02:00
jffs2	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
jfs	Fixes and cleanups for JFS filesystem	2025-07-31 10:27:11 -07:00
kernfs	bpf-next-6.17	2025-07-30 09:58:50 -07:00
lockd
minix	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
netfs	netfs: Fix race between cache write completion and ALL_QUEUED being set	2025-07-14 11:05:02 +02:00
nfs	NFS client updates for Linux 6.17	2025-08-09 07:20:44 +03:00
nfs_common	NFS/localio: nfs_uuid_put() fix the wake up after unlinking the file	2025-08-05 16:45:40 -07:00
nfsd	Networking changes for 6.17.	2025-07-30 08:58:55 -07:00
nilfs2	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
nls
notify	\n	2025-07-31 10:31:00 -07:00
ntfs3	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
ocfs2	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
omfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
openpromfs
orangefs	orangefs: fixes for string handling in debugfs and sysfs	2025-07-31 10:22:48 -07:00
overlayfs	vfs-6.17-rc1.fileattr	2025-07-28 15:24:14 -07:00
proc	Significant patch series in this pull request:	2025-08-03 16:23:09 -07:00
pstore	pstore: switch to locked_recursive_removal()	2025-07-02 22:36:51 -04:00
qnx4
qnx6
quota	VFS: rename lookup_one_len family to lookup_noperm and remove permission check	2025-04-08 11:24:36 +02:00
ramfs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
resctrl	resctrl: get rid of pointless debugfs_file_{get,put}()	2025-07-09 13:30:28 +02:00
romfs	fs: replace mmap hook with .mmap_prepare for simple mappings	2025-06-19 13:56:59 +02:00
smb	33 smb3/cifs client changesets, mostly smbdirect cleanup	2025-08-09 07:12:43 +03:00
squashfs	squashfs: fix incorrect argument to sizeof in kmalloc_array call	2025-07-19 19:08:27 -07:00
sysfs	sysfs: constify internal references to 'struct bin_attribute'	2025-06-17 10:44:09 +02:00
tests
tracefs	Massage rpc_pipefs to use saner primitives and clean up the	2025-07-28 09:56:09 -07:00
ubifs	This pull request contains the following changes for UBI and UBIFS:	2025-07-31 10:08:44 -07:00
udf	\n	2025-07-28 16:16:09 -07:00
ufs	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
unicode
vboxsf	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
verity	fsverity: Switch from crypto_shash to SHA-2 library	2025-07-14 11:29:32 -07:00
xfs	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
zonefs	zonefs changes for 6.17-rc1	2025-07-28 17:06:51 -07:00
aio.c	fs: replace mmap hook with .mmap_prepare for simple mappings	2025-06-19 13:56:59 +02:00
anon_inodes.c	fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass	2025-06-23 12:41:17 +02:00
attr.c	docs/vfs: update references to i_mutex to i_rwsem	2025-06-23 12:17:33 +02:00
backing-file.c	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
bad_inode.c
binfmt_elf_fdpic.c	execve updates for v6.17	2025-07-28 17:11:40 -07:00
binfmt_elf.c	execve updates for v6.17	2025-07-28 17:11:40 -07:00
binfmt_flat.c
binfmt_misc.c	binfmt_misc: switch to locked_recursive_removal()	2025-07-02 22:36:51 -04:00
binfmt_script.c
bpf_fs_kfuncs.c	bpf: Introduce bpf_cgroup_read_xattr to read xattr of cgroup's node	2025-07-02 14:18:20 +02:00
buffer.c	fs: change write_begin/write_end interface to take struct kiocb *	2025-07-16 14:48:18 +02:00
char_dev.c
compat_binfmt_elf.c
coredump.c	vfs-6.17-rc1.pidfs	2025-07-28 14:10:15 -07:00
d_path.c	fold fs_struct->{lock,seq} into a seqlock	2025-07-08 10:25:19 +02:00
dax.c	mm: remove callers of pfn_t functionality	2025-07-09 22:42:19 -07:00
dcache.c	vfs-6.17-rc1.misc	2025-07-28 11:22:56 -07:00
direct-io.c	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
drop_caches.c
eventfd.c
eventpoll.c	vfs-6.17-rc1.misc	2025-07-28 11:22:56 -07:00
exec.c	Summary of significant series in this pull request:	2025-07-31 14:57:54 -07:00
fcntl.c
fhandle.c	fold fs_struct->{lock,seq} into a seqlock	2025-07-08 10:25:19 +02:00
file_attr.c	fs: tighten a sanity check in file_attr_to_fileattr()	2025-07-16 10:22:01 +02:00
file_table.c	\n	2025-07-31 10:31:00 -07:00
file.c	vfs-6.17-rc1.misc	2025-07-28 11:22:56 -07:00
filesystems.c	fs/filesystems: Fix potential unsigned integer underflow in fs_name()	2025-04-14 13:05:59 +02:00
fs_context.c	fs/fs_context: Mark an unlikely if condition with unlikely() in vfs_parse_monolithic_sep()	2025-04-14 13:05:59 +02:00
fs_parser.c	fs/fs_parse: Remove unused and problematic validate_constant_table()	2025-04-21 10:27:59 +02:00
fs_pin.c
fs_struct.c	fold fs_struct->{lock,seq} into a seqlock	2025-07-08 10:25:19 +02:00
fs_types.c
fs-writeback.c
fsopen.c
init.c
inode.c	vfs: Remove unnecessary list_for_each_entry_safe() from evict_inodes()	2025-07-10 09:37:32 +02:00
internal.h	vfs-6.17-rc1.pidfs	2025-07-28 14:10:15 -07:00
ioctl.c	fs: split fileattr related helpers into separate file	2025-07-01 22:44:22 +02:00
Kconfig	fs/Kconfig: enable HUGETLBFS only if ARCH_SUPPORTS_HUGETLBFS	2025-07-24 19:12:38 -07:00
Kconfig.binfmt
kernel_read_file.c
libfs.c	vfs-6.17-rc1.pidfs	2025-07-28 14:10:15 -07:00
locks.c	docs/vfs: update references to i_mutex to i_rwsem	2025-06-23 12:17:33 +02:00
Makefile	fs: split fileattr related helpers into separate file	2025-07-01 22:44:22 +02:00
mbcache.c
mnt_idmapping.c
mount.h	copy_tree(): don't link the mounts via mnt_list	2025-06-29 19:03:37 -04:00
mpage.c	fs: use writeback_iter directly in mpage_writepages	2025-05-09 12:37:48 +02:00
namei.c	vfs-6.17-rc1.pidfs	2025-07-28 14:10:15 -07:00
namespace.c	vfs-6.17-rc1.nsfs	2025-07-28 12:50:56 -07:00
nsfs.c	vfs-6.15-rc1.nsfs	2025-03-24 11:38:12 -07:00
open.c	\n	2025-07-31 10:31:00 -07:00
pidfs.c	vfs-6.17-rc1.pidfs	2025-07-28 14:10:15 -07:00
pipe.c	fs/pipe: set FMODE_NOWAIT in create_pipe_files()	2025-06-10 13:16:19 +02:00
pnode.c	copy_tree(): don't link the mounts via mnt_list	2025-06-29 19:03:37 -04:00
pnode.h	get rid of CL_SHARE_TO_SLAVE	2025-06-29 19:03:46 -04:00
posix_acl.c
proc_namespace.c	->mnt_devname is never NULL	2025-05-23 14:20:44 +02:00
read_write.c	vfs-6.17-rc1.mmap_prepare	2025-07-28 13:43:25 -07:00
readdir.c	readdir: supply dir_context.count as readdir buffer size hint	2025-05-29 12:31:23 +02:00
remap_range.c
select.c	fs: annotate suspected data race between poll_schedule_timeout() and pollwake()	2025-06-23 12:36:51 +02:00
seq_file.c
signalfd.c
splice.c	splice: remove duplicate noinline from pipe_clear_nowait	2025-04-25 12:11:56 +02:00
stack.c	docs/vfs: update references to i_mutex to i_rwsem	2025-06-23 12:17:33 +02:00
stat.c	xfs: New code for 6.16	2025-05-26 12:56:01 -07:00
statfs.c
super.c	vfs-6.17-rc1.super	2025-07-28 15:50:15 -07:00
sync.c
sysctls.c
timerfd.c	A treewide hrtimer timer cleanup	2025-03-25 10:54:15 -07:00
userfaultfd.c	mm/mremap: use an explicit uffd failure path for mremap	2025-07-24 19:12:29 -07:00
utimes.c
xattr.c	vfs-6.17-rc1.misc	2025-07-28 11:22:56 -07:00