Glauber Costa e5bcac6147 sysfs: fail dentry revalidation after namespace change ... When we change the namespace tag of a sysfs entry, the associated dentry is still kept around. readdir() will work correctly and not display the old entries, but open() will still succeed, so will reads and writes. This will no longer happen if sysfs is remounted, hinting that this is a cache-related problem. I am using the following sequence to demonstrate that: shell1: ip link add type veth unshare -nm shell2: ip link set veth1 <pid_of_shell_1> cat /sys/devices/virtual/net/veth1/ifindex Before that patch, this will succeed (fail to fail). After it, it will correctly return an error. Differently from a normal rename, which we handle fine, changing the object namespace will keep it's path intact. So this check seems necessary as well. [ v2: get type from parent, as suggested by Eric Biederman ] Signed-off-by: Glauber Costa <glommer@parallels.com> CC: Tejun Heo <tj@kernel.org> Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-07-17 09:43:55 -07:00
..
9p	kill v9fs_dentry_from_dir_inode()	2012-05-29 23:28:34 -04:00
adfs	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
affs	affs: bury unused macros	2012-05-29 23:28:34 -04:00
afs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
autofs4	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
befs	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
bfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2012-07-05 13:06:25 -07:00
cachefiles	switch touch_atime to struct path	2012-03-20 21:29:41 -04:00
ceph	ceph: check PG_Private flag before accessing page->private	2012-06-20 07:43:48 -05:00
cifs	cifs: when server doesn't set CAP_LARGE_READ_X, cap default rsize at MaxBufferSize	2012-07-03 12:54:42 -05:00
coda	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
configfs	make configfs_pin_fs() return root dentry on success	2012-03-20 21:29:48 -04:00
cramfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-03-21 13:36:41 -07:00
debugfs	debugfs: change parameter check in debugfs_remove() functions	2012-06-13 16:40:41 -07:00
devpts	userns: Convert devpts to use kuid/kgid where appropriate	2012-05-15 14:59:26 -07:00
dlm	dlm: NULL dereference on failure in kmem_cache_create()	2012-05-15 10:39:28 -05:00
ecryptfs	eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files	2012-07-06 15:51:12 -05:00
efs	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
exofs	exofs: fix sparse non-ANSI function warning	2012-06-12 06:33:22 +03:00
exportfs	->encode_fh() API change	2012-05-29 23:28:33 -04:00
ext2	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
ext3	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
ext4	ext4: don't set i_flags in EXT4_IOC_SETFLAGS	2012-06-07 19:04:19 -04:00
fat	fat: fix non-atomic NFS i_pos read	2012-07-11 16:04:47 -07:00
freevxfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
fscache	…
fuse	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse	2012-06-05 10:11:11 -07:00
gfs2	->encode_fh() API change	2012-05-29 23:28:33 -04:00
hfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
hfsplus	hfsplus: fix bless ioctl when used with hardlinks	2012-06-17 14:39:59 -07:00
hostfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
hpfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-06-01 10:34:35 -07:00
hppfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
hugetlbfs	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
isofs	->encode_fh() API change	2012-05-29 23:28:33 -04:00
jbd	jbd: Write journal superblock with WRITE_FUA after checkpointing	2012-05-15 23:34:37 +02:00
jbd2	jbd2: use kmem_cache_zalloc wrapper instead of flag	2012-06-01 00:10:32 -04:00
jffs2	- More robust parsing especially of xattr data in JFFS2	2012-06-01 16:55:42 -07:00
jfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
lockd	Merge branch 'for-3.5' of git://linux-nfs.org/~bfields/linux	2012-06-01 08:32:58 -07:00
logfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
minix	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
ncpfs	fs: introduce inode operation ->update_time	2012-06-01 12:07:25 -04:00
nfs	NFSv4: Fix an NFSv4 mount regression	2012-07-10 13:25:39 -04:00
nfs_common	…
nfsd	nfsd4: BUG_ON(!is_spin_locked()) no good on UP kernels	2012-06-14 13:54:08 -04:00
nilfs2	nilfs2: ensure proper cache clearing for gc-inodes	2012-06-20 14:39:35 -07:00
nls	nls: fix (and rename) mac NLS table files and config options	2012-06-01 19:51:22 -07:00
notify	fsnotify: remove unused parameter from send_to_group()	2012-05-30 21:04:53 -04:00
ntfs	fs: introduce inode operation ->update_time	2012-06-01 12:07:25 -04:00
ocfs2	ocfs2: fix NULL pointer dereference in __ocfs2_change_file_space()	2012-07-11 16:04:43 -07:00
omfs	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
openpromfs	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
proc	vfs: Fix /proc/<tid>/fdinfo/<fd> file handling	2012-06-04 11:00:45 -07:00
pstore	staging tree fixes for 3.5-rc4	2012-06-20 15:15:03 -07:00
qnx4	qnx4: new helper - try_extent()	2012-03-20 21:29:52 -04:00
qnx6	fs: initial qnx6fs addition	2012-03-20 21:29:38 -04:00
quota	quota: Get rid of nested I_MUTEX_QUOTA locking subclass	2012-05-15 23:34:39 +02:00
ramfs	fs: ramfs: file-nommu: add SetPageUptodate()	2012-07-11 16:04:47 -07:00
reiserfs	reiserfs: get rid of resierfs_sync_super	2012-06-01 10:37:36 -04:00
romfs	MTD merge for 3.4	2012-03-30 17:31:56 -07:00
squashfs	Add an extra mount time sanity check, plus some code cleanups and bug fixes.	2012-03-28 18:05:54 -07:00
sysfs	sysfs: fail dentry revalidation after namespace change	2012-07-17 09:43:55 -07:00
sysv	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
ubifs	UBIFS: correct usage of IS_ENABLED()	2012-06-27 14:22:15 +03:00
udf	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2012-06-28 11:43:45 -07:00
ufs	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
xfs	xfs: rename log structure to xlog	2012-06-21 14:21:11 -05:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-03-21 13:36:41 -07:00
Kconfig.binfmt	C6X: add support to build with BINFMT_ELF_FDPIC	2012-05-15 09:17:34 -04:00
Makefile	fs: initial qnx6fs addition	2012-03-20 21:29:38 -04:00
aio.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-06-01 10:34:35 -07:00
anon_inodes.c	anon_inodes: move allocation of anon_inode into ->mount()	2012-03-20 21:29:45 -04:00
attr.c	vfs: increment iversion when a file is truncated	2012-05-30 21:04:53 -04:00
bad_inode.c	mm/fs: remove truncate_range	2012-05-29 16:22:23 -07:00
binfmt_aout.c	VM: add "vm_mmap()" helper function	2012-04-20 17:29:13 -07:00
binfmt_elf.c	binfmt_elf: switch elf_map() to vm_mmap/vm_munmap	2012-05-30 21:04:55 -04:00
binfmt_elf_fdpic.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-05-23 17:42:39 -07:00
binfmt_em86.c	__register_binfmt() made void	2012-03-20 21:29:46 -04:00
binfmt_flat.c	binfmt_flat: use vm_munmap, we are missing ->mmap_sem there	2012-05-30 21:04:56 -04:00
binfmt_misc.c	vfs: Rename end_writeback() to clear_inode()	2012-05-06 13:43:41 +08:00
binfmt_script.c	__register_binfmt() made void	2012-03-20 21:29:46 -04:00
binfmt_som.c	VM: add "vm_mmap()" helper function	2012-04-20 17:29:13 -07:00
bio-integrity.c	fs: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:21 +08:00
bio.c	Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block	2012-05-30 08:52:42 -07:00
block_dev.c	avoid iput() from flusher thread	2012-05-28 09:54:45 -07:00
buffer.c	block: fix infinite loop in __getblk_slow	2012-07-13 08:36:35 -07:00
char_dev.c	…
compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2012-06-01 11:53:44 -07:00
compat_binfmt_elf.c	…
compat_ioctl.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
dcache.c	Revert "vfs: stop d_splice_alias creating directory aliases"	2012-06-08 10:34:03 -07:00
dcookies.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00
direct-io.c	NFS: Ensure that setattr and getattr wait for O_DIRECT write completion	2012-05-31 11:41:36 -07:00
drop_caches.c	…
eventfd.c	eventfd: change int to __u64 in eventfd_signal()	2012-05-31 17:49:32 -07:00
eventpoll.c	HAVE_RESTORE_SIGMASK is defined on all architectures now	2012-06-01 12:58:46 -04:00
exec.c	mm: correctly synchronize rss-counters at exit/exec	2012-06-20 14:39:36 -07:00
fcntl.c	switch fcntl to fget_raw_light/fput_light	2012-05-29 23:28:30 -04:00
fhandle.c	…
fifo.c	…
file.c	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
file_table.c	brlocks/lglocks: API cleanups	2012-05-29 23:28:41 -04:00
filesystems.c	…
fs-writeback.c	writeback: Fix lock imbalance in writeback_sb_inodes()	2012-06-09 08:32:15 +09:00
fs_struct.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
generic_acl.c	…
inode.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-06-01 10:34:35 -07:00
internal.h	vfs: split __dentry_open()	2012-06-01 12:12:00 -04:00
ioctl.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00
ioprio.c	Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block	2012-05-30 08:52:42 -07:00
libfs.c	vfs: make it possible to access the dentry hash/len as one 64-bit entry	2012-05-10 19:54:35 -07:00
locks.c	Remove easily user-triggerable BUG from generic_setlease	2012-07-13 10:50:23 -07:00
mbcache.c	…
mount.h	…
mpage.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00
namei.c	vfs: retry last component if opening stale dentry	2012-06-01 12:12:01 -04:00
namespace.c	vfs: umount_tree() might be called on subtree that had never made it	2012-05-30 21:04:55 -04:00
no-block.c	…
open.c	vfs: make O_PATH file descriptors usable for 'fchdir()'	2012-07-07 17:19:02 -07:00
pipe.c	fs: introduce inode operation ->update_time	2012-06-01 12:07:25 -04:00
pnode.c	brlocks/lglocks: API cleanups	2012-05-29 23:28:41 -04:00
pnode.h	…
posix_acl.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00
proc_namespace.c	brlocks/lglocks: API cleanups	2012-05-29 23:28:41 -04:00
read_write.c	aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()	2012-05-31 17:49:32 -07:00
read_write.h	…
readdir.c	switch readdir/getdents to fget_light/fput_light	2012-05-29 23:28:29 -04:00
select.c	HAVE_RESTORE_SIGMASK is defined on all architectures now	2012-06-01 12:58:46 -04:00
seq_file.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
signalfd.c	switch signalfd4() to fget_light/fput_light	2012-05-29 23:28:30 -04:00
splice.c	splice: fix racy pipe->buffers uses	2012-06-13 21:16:42 +02:00
stack.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00
stat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-05-23 17:42:39 -07:00
statfs.c	switch statfs to fget_light/fput_light	2012-05-29 23:28:31 -04:00
super.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
sync.c	switch do_fsync() to fget_light()	2012-05-29 23:28:29 -04:00
timerfd.c	…
utimes.c	switch utimes() to fget_light/fput_light	2012-05-29 23:28:32 -04:00
xattr.c	switch xattr syscalls to fget_light/fput_light	2012-05-29 23:28:30 -04:00
xattr_acl.c	fs: reduce the use of module.h wherever possible	2012-02-28 19:31:58 -05:00