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J. Bruce Fields 321bcf9216 dcache: don't expose uninitialized memory in /proc/<pid>/fd/<fd> 
Well, it's not especially important that target->d_iname get the contents
of dentry->d_iname, but it's important that it get initialized with
*something*, otherwise we're just exposing some random piece of memory to
anyone who reads the link at /proc/<pid>/fd/<fd> for the deleted file, when
it's still held open by someone.

I've run a test program that copies a short (<36 character) name ontop of a
long (>=36 character) name and see that the first time I run it, without
this patch, I get unpredicatable results out of /proc/<pid>/fd/<fd>.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:18 -07:00
..
9p
9p: fix bad kconfig cross-dependency
2007-10-17 14:31:07 -05:00
adfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
affs
fs: mark nibblemap const
2007-10-17 08:42:47 -07:00
afs
KEYS: Make request_key() and co fundamentally asynchronous
2007-10-17 08:42:57 -07:00
autofs
Use task_pid_nr() instead of pid_nr(task_pid())
2007-10-19 11:53:43 -07:00
autofs4
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
befs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
bfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
cifs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
2007-10-19 12:00:58 -07:00
coda
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
configfs
r/o bind mounts: filesystem helpers for custom 'struct file's
2007-10-17 08:43:04 -07:00
cramfs
fs/cramfs/inode.c: replace hardcoded value with preprocessor constant
2007-10-18 14:37:29 -07:00
debugfs
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
devpts
devpts: add fsnotify create event
2007-05-08 11:14:59 -07:00
dlm
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
ecryptfs
ecryptfs: allow lower fs to interpret ATTR_KILL_S*ID
2007-10-18 14:37:21 -07:00
efs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
exportfs
knfsd: exportfs: split out reconnecting a dentry from find_exported_dentry
2007-07-17 10:23:06 -07:00
ext2
ext2 reservations
2007-10-17 08:43:02 -07:00
ext3
JBD: Fix JBD warnings when compiling with CONFIG_JBD_DEBUG
2007-10-19 11:53:35 -07:00
ext4
ext4: lighten up resize transaction requirements
2007-10-17 18:50:04 -04:00
fat
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
freevxfs
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
fuse
fuse: add blksize field to fuse_attr
2007-10-18 14:37:31 -07:00
gfs2
fs: correct SuS compliance for open of large file without options
2007-10-17 08:43:01 -07:00
hfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hfsplus
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hostfs
uml: fix hostfs style
2007-10-16 09:43:07 -07:00
hpfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hppfs
[PATCH] Mark struct super_operations const
2007-02-12 09:48:47 -08:00
hugetlbfs
r/o bind mounts: filesystem helpers for custom 'struct file's
2007-10-17 08:43:04 -07:00
isofs
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
jbd
JBD: Fix JBD warnings when compiling with CONFIG_JBD_DEBUG
2007-10-19 11:53:35 -07:00
jbd2
JBD2: debug code cleanup.
2007-10-17 18:49:59 -04:00
jffs2
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
jfs
Fix misspellings of "system", "controller", "interrupt" and "necessary".
2007-10-19 23:10:43 +02:00
lockd
NFS/SUNRPC: use transport protocol naming
2007-10-09 17:17:53 -04:00
minix
limit minixfs printks on corrupted dir i_size
2007-10-17 08:42:53 -07:00
msdos
[PATCH] mark struct inode_operations const 2
2007-02-12 09:48:46 -08:00
ncpfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
nfs
NFS: Fix a typo in nfs_call_unlink()
2007-10-21 13:37:07 -04:00
nfs_common
…
nfsd
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
nls
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
ntfs
fix typo "insted" -> "instead"
2007-10-20 01:55:04 +02:00
ocfs2
Fix misspellings of "system", "controller", "interrupt" and "necessary".
2007-10-19 23:10:43 +02:00
openpromfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
partitions
fs/partitions/sun.c endianness annotations
2007-10-14 12:41:51 -07:00
proc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
2007-10-19 12:07:03 -07:00
qnx4
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
ramfs
Remove valueless definition of hard-selected RAMFS option
2007-10-17 08:42:56 -07:00
reiserfs
Fix misspellings of "system", "controller", "interrupt" and "necessary".
2007-10-19 23:10:43 +02:00
romfs
fs/romfs/inode.c: trivial improvements
2007-10-17 08:42:47 -07:00
smbfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
sysfs
sysfs: trivial: fix sysfs_create_file kerneldoc spelling mistake
2007-10-20 03:14:32 +02:00
sysv
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
udf
fs/udf/balloc.c: mark a variable as uninitialized_var()
2007-10-17 08:43:00 -07:00
ufs
ufs: Fix mount check in ufs_fill_super()
2007-10-17 08:42:51 -07:00
vfat
[PATCH] mark struct inode_operations const 3
2007-02-12 09:48:46 -08:00
xfs
[XFS] cleanup fid types mess
2007-10-19 18:02:55 +10:00
aio.c
Remove struct task_struct::io_wait
2007-10-18 14:37:20 -07:00
anon_inodes.c
anon-inodes use open coded atomic_inc for the shared inode
2007-10-17 08:43:00 -07:00
attr.c
VFS: make notify_change pass ATTR_KILL_S*ID to setattr operations
2007-10-18 14:37:22 -07:00
bad_inode.c
sendfile: remove bad_sendfile() from bad_file_ops
2007-07-10 08:04:15 +02:00
binfmt_aout.c
core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe
2007-10-17 08:42:50 -07:00
binfmt_elf_fdpic.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
binfmt_elf.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
binfmt_em86.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_flat.c
binfmt_flat: warning fixes
2007-10-17 08:42:54 -07:00
binfmt_misc.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_script.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_som.c
core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe
2007-10-17 08:42:50 -07:00
bio.c
bio: make freeing of ->bi_io_vec conditional in bio_free()
2007-10-16 11:03:52 +02:00
block_dev.c
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
buffer.c
nobh: nobh_write_end fix
2007-10-21 08:54:05 -07:00
char_dev.c
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
compat_ioctl.c
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
compat.c
mm: variable length argument support
2007-07-19 10:04:45 -07:00
dcache.c
dcache: don't expose uninitialized memory in /proc/<pid>/fd/<fd>
2007-10-22 08:13:18 -07:00
dcookies.c
Remove fs.h from mm.h
2007-07-29 17:09:29 -07:00
direct-io.c
remove ZERO_PAGE
2007-10-16 09:42:53 -07:00
dnotify.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
dquot.c
quota: send messages via netlink
2007-10-17 08:42:56 -07:00
drop_caches.c
invalidate_mapping_pages(): add cond_resched
2007-07-16 09:05:36 -07:00
eventfd.c
eventfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
eventpoll.c
fs/eventpoll.c: use list_for_each_entry() instead of list_for_each()
2007-10-19 11:53:38 -07:00
exec.c
Isolate some explicit usage of task->tgid
2007-10-19 11:53:40 -07:00
fcntl.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
fifo.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
file_table.c
fs/file_table.c: use list_for_each_entry() instead of list_for_each()
2007-10-19 11:53:38 -07:00
file.c
[PATCH] fdtable: Provide free_fdtable() wrapper
2006-12-22 08:55:50 -08:00
filesystems.c
add filesystem subtype support
2007-05-08 11:15:01 -07:00
fs-writeback.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
generic_acl.c
Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
2007-07-17 12:00:03 -07:00
inode.c
introduce I_SYNC
2007-10-17 08:43:02 -07:00
inotify_user.c
change inotifyfs magic as the same magic is used for futexfs
2007-10-17 08:43:00 -07:00
inotify.c
[PATCH] new helper - inotify_evict_watch()
2007-10-21 02:37:38 -04:00
internal.h
cleanup compat ioctl handling
2007-05-08 11:15:09 -07:00
ioctl.c
drop obsolete sys_ioctl export
2007-07-16 09:05:48 -07:00
ioprio.c
Uninline find_task_by_xxx set of functions
2007-10-19 11:53:40 -07:00
Kconfig
jbd: config_jbd_debug cannot create /proc entry
2007-10-19 11:53:35 -07:00
Kconfig.binfmt
fs: Kill sh dependency for binfmt_flat.
2007-05-21 14:34:00 +09:00
libfs.c
make fs/libfs.c:simple_commit_write() static
2007-10-17 08:42:53 -07:00
locks.c
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
Makefile
Remove valueless definition of hard-selected RAMFS option
2007-10-17 08:42:56 -07:00
mbcache.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
mpage.c
mm: buffered write cleanup
2007-10-16 09:42:54 -07:00
namei.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
namespace.c
[PATCH] new helpers - collect_mounts() and release_collected_mounts()
2007-10-21 02:37:25 -04:00
nfsctl.c
nfsctl: use vfs_path_lookup
2007-07-19 10:04:45 -07:00
no-block.c
…
open.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
pipe.c
sched: affine sync wakeups
2007-10-15 17:00:19 +02:00
pnode.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
pnode.h
[PATCH] new helpers - collect_mounts() and release_collected_mounts()
2007-10-21 02:37:25 -04:00
posix_acl.c
…
quota_v1.c
…
quota_v2.c
…
quota.c
[IA64] Fix build failure in fs/quota.c
2007-07-27 15:40:13 -07:00
read_write.c
Cleanup macros for distinguishing mandatory locks
2007-10-09 18:32:46 -04:00
read_write.h
…
readdir.c
ROUND_UP macro cleanup in fs/(select|compat|readdir).c
2007-05-08 11:15:09 -07:00
select.c
fs/select, remove unused macros
2007-10-19 11:53:41 -07:00
seq_file.c
[FS] seq_file: Introduce the seq_open_private()
2007-10-10 16:55:33 -07:00
signalfd.c
rename signalfd_siginfo fields
2007-10-17 08:43:01 -07:00
splice.c
Implement file posix capabilities
2007-10-17 08:43:07 -07:00
stack.c
[PATCH] fs/stack.c: Copy i_nlink after all other attributes are copied
2007-02-19 14:21:50 -08:00
stat.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
super.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
sync.c
Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
2007-06-28 11:38:30 -07:00
timerfd.c
make timerfd return a u64 and fix the __put_user
2007-07-26 11:35:17 -07:00
utimes.c
VFS: check nanoseconds in utimensat
2007-10-17 08:42:52 -07:00
xattr_acl.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
xattr.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00