Al Viro 7ea600b531 Nest rename_lock inside vfsmount_lock ...

... lest we get livelocks between path_is_under() and d_path() and friends.

The thing is, wrt fairness lglocks are more similar to rwsems than to rwlocks;
it is possible to have thread B spin on attempt to take lock shared while thread
A is already holding it shared, if B is on lower-numbered CPU than A and there's
a thread C spinning on attempt to take the same lock exclusive.

As the result, we need consistent ordering between vfsmount_lock (lglock) and
rename_lock (seq_lock), even though everything that takes both is going to take
vfsmount_lock only shared.

Spotted-by: Brad Spengler <spender@grsecurity.net>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2013-03-26 18:25:57 -04:00

..

9p

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

adfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

affs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

afs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

autofs4

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

befs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

bfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

btrfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2013-03-09 16:51:13 -08:00

cachefiles

FS-Cache: Mark cancellation of in-progress operation

2012-12-20 22:34:00 +00:00

ceph

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

cifs

CIFS: Fix missing of oplock_read value in smb30_values structure

2013-03-06 19:37:01 -06:00

coda

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

configfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

cramfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

debugfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

devpts

fs: Limit sys_mount to only request filesystem modules (Part 2).

2013-03-07 01:08:55 -08:00

dlm

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

ecryptfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2013-03-09 16:51:13 -08:00

efs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

exofs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

exportfs

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

ext2

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

ext3

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

ext4

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

f2fs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

fat

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

freevxfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

fscache

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

fuse

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

gfs2

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

hfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

hfsplus

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

hostfs

hostfs: directory methods have no business in non-directory inode_operations

2013-02-22 23:31:37 -05:00

hpfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

hppfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

hugetlbfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

isofs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

jbd

jbd: don't wake kjournald unnecessarily

2013-01-14 22:50:45 +01:00

jbd2

jbd2: fix ERR_PTR dereference in jbd2__journal_start

2013-03-02 17:08:46 -05:00

jffs2

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

jfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

lockd

Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux

2013-02-28 18:02:55 -08:00

logfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

minix

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

ncpfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

nfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

nfs_common

nfs_common: Update the translation between nfsv3 acls linux posix acls

2013-02-13 06:15:14 -08:00

nfsd

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

nilfs2

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

nls

nls: fix (and rename) mac NLS table files and config options

2012-06-01 19:51:22 -07:00

notify

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

ntfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

ocfs2

fs: Limit sys_mount to only request filesystem modules (Part 2).

2013-03-07 01:08:55 -08:00

omfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

openpromfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

proc

proc: Use nd_jump_link in proc_ns_follow_link

2013-03-09 00:14:45 -08:00

pstore

A few fixes to reduce places where pstore might hang

2013-02-21 09:38:18 -08:00

qnx4

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

qnx6

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

quota

quota: Use the pre-processor to compile out quotactl_cmd_write when !CONFIG_BLOCK

2012-12-13 16:33:24 +01:00

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

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

romfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

squashfs

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

sysfs

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

sysv

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

ubifs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

udf

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

ufs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

xfs

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

aio.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

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

userns: Allow chown and setgid preservation

2012-11-20 04:17:24 -08:00

bad_inode.c

lseek: the "whence" argument is called "whence"

2012-12-17 17:15:12 -08:00

binfmt_aout.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

binfmt_elf_fdpic.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

binfmt_elf.c

ImgTec Meta architecture changes for v3.9-rc1

2013-03-03 12:06:09 -08:00

binfmt_em86.c

exec: use -ELOOP for max recursion depth

2012-12-17 17:15:23 -08:00

binfmt_flat.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

binfmt_misc.c

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

binfmt_script.c

exec: do not leave bprm->interp on stack

2012-12-20 17:40:19 -08:00

binfmt_som.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

bio-integrity.c

block: Ues bi_pool for bio_integrity_alloc()

2012-09-09 10:35:38 +02:00

bio.c

block: add missing block_bio_complete() tracepoint

2013-01-14 15:00:36 +01:00

block_dev.c

Merge branch 'for-3.9/core' of git://git.kernel.dk/linux-block

2013-02-28 12:52:24 -08:00

buffer.c

Merge branch 'for-3.9/core' of git://git.kernel.dk/linux-block

2013-02-28 12:52:24 -08:00

char_dev.c

char_dev: pin parent kobject

2012-10-22 08:50:37 +03:00

compat_binfmt_elf.c

coredump: extend core dump note section to contain file names of mapped files

2012-10-06 03:05:17 +09:00

compat_ioctl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

compat.c

switch timerfd compat syscalls to COMPAT_SYSCALL_DEFINE

2013-02-03 15:09:25 -05:00

coredump.c

coredump: remove redundant defines for dumpable states

2013-02-27 19:10:11 -08:00

coredump.h

coredump: update coredump-related headers

2012-10-06 03:05:15 +09:00

dcache.c

Nest rename_lock inside vfsmount_lock

2013-03-26 18:25:57 -04:00

dcookies.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

direct-io.c

fs: Fix possible use-after-free with AIO

2013-02-22 23:31:36 -05:00

drop_caches.c

…

eventfd.c

fs, eventfd: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

eventpoll.c

epoll: prevent missed events on EPOLL_CTL_MOD

2013-01-02 09:16:43 -08:00

exec.c

coredump: remove redundant defines for dumpable states

2013-02-27 19:10:11 -08:00

fcntl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

fhandle.c

Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux

2012-12-20 14:04:11 -08:00

fifo.c

fifo: Do not restart open() if it already found a partner

2012-07-16 08:33:14 -07:00

file_table.c

cache the value of file_inode() in struct file

2013-03-01 19:48:30 -05:00

file.c

locking: Various static lock initializer fixes

2013-02-19 08:42:45 +01:00

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

2 writeback fixes

2013-02-28 13:21:44 -08:00

generic_acl.c

userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr

2012-09-18 01:01:35 -07:00

inode.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

internal.h

Don't bother with redoing rw_verify_area() from default_file_splice_from()

2013-03-21 13:11:11 -04:00

ioctl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -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

Kconfig

fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/Kconfig

2013-01-17 13:08:45 +01:00

Kconfig.binfmt

coredump: make core dump functionality optional

2012-10-06 03:05:15 +09:00

libfs.c

vfs: drop vmtruncate

2012-12-20 18:46:29 -05:00

locks.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

Makefile

f2fs: update Kconfig and Makefile

2012-12-11 13:43:42 +09:00

mbcache.c

…

mount.h

proc: Usable inode numbers for the namespace file descriptors.

2012-11-20 04:19:49 -08:00

mpage.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

namei.c

vfs: don't BUG_ON() if following a /proc fd pseudo-symlink results in a symlink

2013-03-08 09:03:07 -08:00

namespace.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

no-block.c

…

open.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-03-03 13:23:03 -08:00

pipe.c

fs: Preserve error code in get_empty_filp(), part 2

2013-02-22 23:31:32 -05:00

pnode.c

VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors

2012-07-14 16:37:27 +04:00

pnode.h

vfs: Only support slave subtrees across different user namespaces

2012-11-19 05:59:20 -08:00

posix_acl.c

userns: Convert vfs posix_acl support to use kuids and kgids

2012-09-18 01:01:35 -07:00

proc_namespace.c

get rid of magic in proc_namespace.c

2012-07-14 16:32:48 +04:00

read_write.c

Don't bother with redoing rw_verify_area() from default_file_splice_from()

2013-03-21 13:11:11 -04:00

read_write.h

compat: fs: Generic compat_sys_sendfile implementation

2012-10-02 21:35:55 -04:00

readdir.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

select.c

sched/rt: Move rt specific bits into new header file

2013-02-07 20:51:08 +01:00

seq_file.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-03-03 13:23:03 -08:00

signalfd.c

fs, epoll: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

splice.c

Don't bother with redoing rw_verify_area() from default_file_splice_from()

2013-03-21 13:11:11 -04:00

stack.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

stat.c

switch vfs_getattr() to struct path

2013-02-26 02:46:08 -05:00

statfs.c

vfs: fix user_statfs to retry once on ESTALE errors

2012-12-20 18:50:07 -05:00

super.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

sync.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

timerfd.c

compat: restore timerfd settime and gettime compat syscalls

2013-03-02 09:35:13 -05:00

utimes.c

vfs: allow utimensat() calls to retry once on an ESTALE error

2012-12-20 18:50:08 -05:00

xattr_acl.c

userns: Fix posix_acl_file_xattr_userns gid conversion

2012-10-12 13:16:48 -07:00

xattr.c

vfs: make lremovexattr retry once on ESTALE error

2012-12-20 18:50:11 -05:00