Linus Torvalds d0d2727710 vfs: make sure we don't have a stale root path if unlazy_walk() fails ... When I moved the RCU walk termination into unlazy_walk(), I didn't copy quite all of it: for the successful RCU termination we properly add the necessary reference counts to our temporary copy of the root path, but for the failure case we need to make sure that any temporary root path information is cleared out (since it does _not_ have the proper reference counts from the RCU lookup). We could clean up this mess by just always dropping the temporary root information, but Al points out that that would mean that a single lookup through symlinks could see multiple different root entries if it races with another thread doing chroot. Not that I think we should really care (we had that before too, back before we had a copy of the root path in the nameidata). Al says he has a cunning plan. In the meantime, this is the minimal fix for the problem, even if it's not all that pretty. Reported-by: Mace Moneta <moneta.mace@gmail.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-09-10 12:17:49 -07:00
..
9p	Second round of 9p patches for the 3.11 merge window.	2013-07-11 10:21:23 -07:00
adfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
affs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
afs	afs: use check_submounts_and_drop()	2013-09-05 16:23:51 -04:00
autofs4	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
befs	[readdir] convert befs	2013-06-29 12:56:55 +04:00
bfs	bfs: iget_locked() doesn't return an ERR_PTR	2013-08-24 12:10:22 -04:00
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-09-06 09:36:28 -07:00
cachefiles	CacheFiles: Implement interface to check cache consistency	2013-09-06 09:17:30 +01:00
ceph	ceph: use d_invalidate() to invalidate aliases	2013-09-06 12:55:29 -07:00
cifs	direct-io: Handle O_(D)SYNC AIO	2013-09-04 09:23:46 -04:00
coda	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
configfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-14 11:42:26 -07:00
cramfs	[readdir] convert f2fs	2013-06-29 12:56:46 +04:00
debugfs	debugfs: debugfs_remove_recursive() must not rely on list_empty(d_subdirs)	2013-07-31 12:16:31 -04:00
devpts	fs: Limit sys_mount to only request filesystem modules (Part 2).	2013-03-07 01:08:55 -08:00
dlm	dlm: remove signal blocking	2013-08-12 15:22:43 -05:00
ecryptfs	Code cleanups and improved buffer handling during page crypto operations	2013-07-11 10:20:18 -07:00
efivarfs	efivarfs: we can use simple_lookup() now	2013-07-14 17:48:35 +04:00
efs	efs: iget_locked() doesn't return an ERR_PTR()	2013-08-24 12:10:22 -04:00
exofs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
exportfs	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
ext2	[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...	2013-06-29 12:57:10 +04:00
ext3	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2013-09-06 09:06:02 -07:00
ext4	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-09-06 09:36:28 -07:00
f2fs	f2fs: optimize gc for better performance	2013-09-05 13:50:32 +09:00
fat	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
freevxfs	[readdir] convert freevxfs	2013-06-29 12:56:53 +04:00
fscache	fscache: Netfs function for cleanup post readpages	2013-09-06 09:17:30 +01:00
fuse	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse	2013-09-09 09:18:23 -07:00
gfs2	This is possibly the smallest ever set of GFS2 patches for a merge	2013-09-09 09:16:51 -07:00
hfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hfsplus	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hostfs	um: hostfs: Fix writeback	2013-09-07 10:38:29 +02:00
hpfs	Merge branch 'hpfs' from Mikulas Patocka	2013-07-04 11:22:55 -07:00
hppfs	clean up scary strncpy(dst, src, strlen(src)) uses	2013-07-03 16:07:41 -07:00
hugetlbfs	cope with potentially long ->d_dname() output for shmem/hugetlb	2013-08-24 12:10:17 -04:00
isofs	isofs: Refuse RW mount of the filesystem instead of making it RO	2013-07-31 22:14:50 +02:00
jbd	jbd: use a single printk for jbd_debug()	2013-08-09 10:49:00 +02:00
jbd2	jbd2: Fix endian mixing problems in the checksumming code	2013-08-28 14:59:58 -04:00
jffs2	[readdir] convert jffs2	2013-06-29 12:56:47 +04:00
jfs	jfs: fix readdir cookie incompatibility with NFSv4	2013-08-15 17:22:29 -05:00
lockd	LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs	2013-08-05 15:03:46 -04:00
logfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
minix	minix: bug widening a binary "not" operation	2013-06-29 12:57:35 +04:00
ncpfs	ncpfs: fix error return code in ncp_parse_options()	2013-07-09 10:33:25 -07:00
nfs	NFS client updates for Linux 3.12	2013-09-09 09:19:15 -07:00
nfs_common	nfs_common: Update the translation between nfsv3 acls linux posix acls	2013-02-13 06:15:14 -08:00
nfsd	nfsd: racy access to ->d_name in nsfd4_encode_path()	2013-09-03 22:50:28 -04:00
nilfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-09-05 08:50:26 -07:00
nls
notify	fsnotify: update comments concerning locking scheme	2013-07-09 10:33:20 -07:00
ntfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
ocfs2	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2013-09-07 14:34:07 -07:00
omfs	[readdir] convert omfs	2013-06-29 12:56:37 +04:00
openpromfs	[readdir] convert openpromfs	2013-06-29 12:56:32 +04:00
proc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
pstore	pstore/ram: (really) fix undefined usage of rounddown_pow_of_two	2013-08-30 15:57:01 -07:00
qnx4	[readdir] convert qnx4	2013-06-29 12:56:38 +04:00
qnx6	[readdir] convert qnx6	2013-06-29 12:56:39 +04:00
quota	xfs: update for v3.12-rc1	2013-09-09 11:19:09 -07:00
ramfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2013-09-06 09:06:02 -07:00
romfs	[readdir] convert romfs	2013-06-29 12:56:29 +04:00
squashfs	[readdir] convert squashfs	2013-06-29 12:56:28 +04:00
sysfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-09-07 14:36:57 -07:00
sysv	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
ubifs	Only a single patch which fixes a message.	2013-07-05 12:08:47 -07:00
udf	udf: Refuse RW mount of the filesystem instead of making it RO	2013-07-31 22:14:51 +02:00
ufs	[readdir] simple local unixlike: switch to ->iterate()	2013-06-29 12:46:47 +04:00
xfs	xfs: update for v3.12-rc1	2013-09-09 11:19:09 -07:00
aio.c	aio: fix wrong comment in aio_complete()	2013-07-03 16:08:06 -07:00
anon_inodes.c	get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero	2013-02-26 02:46:11 -05:00
attr.c
bad_inode.c	[readdir] ->readdir() is gone	2013-06-29 12:57:04 +04:00
binfmt_aout.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
binfmt_elf_fdpic.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
binfmt_elf.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
binfmt_em86.c
binfmt_flat.c	new helper: read_code()	2013-04-29 15:40:23 -04:00
binfmt_misc.c	binfmt_misc: reuse string_unescape_inplace()	2013-04-30 17:04:03 -07:00
binfmt_script.c
binfmt_som.c
bio-integrity.c	bio-integrity: Add explicit field for owner of bip_buf	2013-03-23 14:26:34 -07:00
bio.c	Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-09-03 18:25:03 -07:00
block_dev.c	direct-io: Handle O_(D)SYNC AIO	2013-09-04 09:23:46 -04:00
buffer.c	mm: vmscan: take page buffers dirty and locked state into account	2013-07-03 16:07:29 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c	compat.c: LOOP_CLR_FD is taken care of in loop.c itself...	2013-06-29 12:46:44 +04:00
compat.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
coredump.c	coredump: '% at the end' shouldn't bypass core_uses_pid logic	2013-07-03 16:08:02 -07:00
coredump.h
dcache.c	vfs: use lockred "dead" flag to mark unrecoverably dead dentries	2013-09-08 13:46:52 -07:00
dcookies.c	consolidate compat lookup_dcookie()	2013-03-03 23:00:23 -05:00
direct-io.c	direct-io: Use return from cmpxchg to decide of assignment happened	2013-09-09 10:47:42 -07:00
drop_caches.c
eventfd.c
eventpoll.c	switch epoll_ctl() to fdget	2013-09-03 23:04:44 -04:00
exec.c	Fix TLB gather virtual address range invalidation corner cases	2013-08-16 08:52:46 -07:00
fcntl.c	vfs: add missing check for __O_TMPFILE in fcntl_init()	2013-08-05 18:25:32 +04:00
fhandle.c
file_table.c	only regular files with FMODE_WRITE need to be on s_files	2013-09-03 22:50:28 -04:00
file.c	don't bother with deferred freeing of fdtables	2013-05-01 17:31:42 -04:00
filesystems.c	fs: Limit sys_mount to only request filesystem modules.	2013-03-03 19:36:31 -08:00
fs_struct.c	constify path_get/path_put and fs_struct.c stuff	2013-03-01 23:51:07 -05:00
fs-writeback.c	mm/writeback: don't check force_wait to handle bdi->work_list	2013-07-09 10:33:22 -07:00
generic_acl.c
inode.c	constify touch_atime()	2013-09-03 22:52:45 -04:00
internal.h	vfs: check unlinked ancestors before mount	2013-09-05 16:23:50 -04:00
ioctl.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
ioprio.c
Kconfig	efivarfs: Move to fs/efivarfs	2013-04-17 13:25:09 +01:00
Kconfig.binfmt	fs: make binfmt support for #! scripts modular and removable	2013-04-30 17:04:04 -07:00
libfs.c	make simple_lookup() usable for filesystems that set ->s_d_op	2013-07-14 17:43:25 +04:00
locks.c	locks: move file_lock_list to a set of percpu hlist_heads and convert file_lock_lock to an lglock	2013-07-08 13:36:42 +04:00
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
mbcache.c
mount.h	get rid of full-hash scan on detaching vfsmounts	2013-04-09 14:12:52 -04:00
mpage.c
namei.c	vfs: make sure we don't have a stale root path if unlazy_walk() fails	2013-09-10 12:17:49 -07:00
namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-09-07 14:36:57 -07:00
no-block.c
open.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
pipe.c	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
pnode.c	vfs: Fix invalid ida_remove() call	2013-05-31 15:16:33 -04:00
pnode.h	vfs: Don't copy mount bind mounts of /proc/<pid>/ns/mnt between namespaces	2013-08-26 18:42:15 -07:00
posix_acl.c
proc_namespace.c
read_write.c	vfs: export lseek_execute() to modules	2013-07-03 16:23:27 +04:00
readdir.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
select.c	net: rename include/net/ll_poll.h to include/net/busy_poll.h	2013-07-10 17:08:27 -07:00
seq_file.c	seq_file: add seq_list_*_percpu helpers	2013-07-08 13:36:41 +04:00
signalfd.c	switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE	2013-03-03 22:58:46 -05:00
splice.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
stack.c
stat.c	quota: provide interface for readding allocated space into reserved space	2013-08-17 09:32:32 -04:00
statfs.c
super.c	direct-io: Implement generic deferred AIO completions	2013-09-04 09:23:46 -04:00
sync.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
timerfd.c	timerfd: Add alarm timers	2013-05-29 12:57:34 -07:00
utimes.c
xattr_acl.c
xattr.c