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linux/fs
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Oleg Nesterov 437f7fdb60 check_unsafe_exec: s/lock_task_sighand/rcu_read_lock/ 
write_lock(&current->fs->lock) guarantees we can't wrongly miss
LSM_UNSAFE_SHARE, this is what we care about. Use rcu_read_lock()
instead of ->siglock to iterate over the sub-threads. We must see
all CLONE_THREAD|CLONE_FS threads which didn't pass exit_fs(), it
takes fs->lock too.

With or without this patch we can miss the freshly cloned thread
and set LSM_UNSAFE_SHARE, we don't care.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
[ Fixed lock/unlock typo  - Hugh ]
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-24 07:39:45 -07:00
..
9p
vfs: simple_set_mnt() should return void
2009-03-27 14:44:03 -04:00
adfs
fs/adfs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
affs
fs/affs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
afs
AFS: Guard afs_file_readpage_read_complete() definition with CONFIG_AFS_FSCACHE
2009-04-17 09:55:19 -07:00
autofs
Fix autofs_expire()
2009-04-20 23:01:15 -04:00
autofs4
autofs4: use memchr() in invalid_string()
2009-04-20 23:02:50 -04:00
befs
befs: fix build on parisc
2009-04-08 10:21:43 -07:00
bfs
fs/Kconfig: move bfs out
2009-01-22 13:15:57 +03:00
btrfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
2009-04-21 14:12:58 -07:00
cachefiles
CacheFiles: A cache that backs onto a mounted filesystem
2009-04-03 16:42:41 +01:00
cifs
cifs: when renaming don't try to unlink negative dentry
2009-04-17 21:08:15 +00:00
coda
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
configfs
constify dentry_operations: configfs
2009-03-27 14:44:03 -04:00
cramfs
fs/cramfs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
debugfs
debugfs: function to know if debugfs is initialized
2009-03-23 16:25:46 +01:00
devpts
Merge code for single and multiple-instance mounts
2009-03-27 14:44:04 -04:00
dlm
dlm: fix length calculation in compat code
2009-03-11 12:23:59 -05:00
ecryptfs
ecryptfs: use memdup_user()
2009-04-20 23:02:51 -04:00
efs
fs/efs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
exofs
exofs: Documentation
2009-03-31 19:44:38 +03:00
exportfs
…
ext2
ext2: fix data corruption for racing writes
2009-04-13 15:04:33 -07:00
ext3
ext3: Try to avoid starting a transaction in writepage for data=writepage
2009-04-08 13:15:10 -04:00
ext4
ext4: Remove code handling bio_alloc failure with __GFP_WAIT
2009-04-15 12:10:13 +02:00
fat
vfat: Note the NLS requirement
2009-04-17 09:32:11 -07:00
freevxfs
fs/Kconfig: move vxfs out
2009-01-22 13:15:58 +03:00
fscache
FS-Cache: Implement data I/O part of netfs API
2009-04-03 16:42:39 +01:00
fuse
fuse: fix "direct_io" private mmap
2009-04-09 17:37:53 +02:00
gfs2
GFS2: Fix page_mkwrite() return code
2009-04-20 16:02:02 +01:00
hfs
hfs: fix memory leak when unmounting
2009-04-13 15:04:29 -07:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
hostfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
hpfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
hppfs
hppfs: hppfs_read_file() may return -ERROR
2009-04-02 19:04:53 -07:00
hugetlbfs
hugetlbfs: return negative error code for bad mount option
2009-04-21 13:41:48 -07:00
isofs
fs/isofs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
jbd
jbd: update locking coments
2009-04-13 15:04:32 -07:00
jbd2
jbd2: use WRITE_SYNC_PLUG instead of WRITE_SYNC
2009-04-06 08:04:54 -07:00
jffs2
Merge git://git.infradead.org/mtd-2.6
2009-04-06 14:56:26 -07:00
jfs
New helper - current_umask()
2009-03-31 23:00:26 -04:00
lockd
Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux
2009-04-06 13:25:56 -07:00
minix
fs/minix: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
ncpfs
ncpfs: use memdup_user()
2009-04-20 23:02:51 -04:00
nfs
NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargs
2009-04-21 07:46:49 -07:00
nfs_common
…
nfsd
Fix i_mutex vs. readdir handling in nfsd
2009-04-20 23:01:16 -04:00
nilfs2
nilfs2: fix possible mismatch of sufile counters on recovery
2009-04-13 09:53:52 +09:00
nls
…
notify
fs: avoid I_NEW inodes
2009-03-27 14:44:05 -04:00
ntfs
ntfs: remove private wrapper of endian helpers
2009-04-01 08:59:18 -07:00
ocfs2
ocfs2: fix i_mutex locking in ocfs2_splice_to_file()
2009-04-15 12:10:12 +02:00
omfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
openpromfs
zero i_uid/i_gid on inode allocation
2009-01-05 11:54:28 -05:00
partitions
Merge branch 'tracing/core-v2' into tracing-for-linus
2009-04-02 00:49:02 +02:00
proc
proc: mounts_poll() make consistent to mdstat_poll
2009-04-16 16:17:10 -07:00
qnx4
fs/qnx4: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
quota
vfs: skip I_CLEAR state inodes
2009-04-02 19:04:48 -07:00
ramfs
ramfs: fix double freeing s_fs_info on failed mount
2009-04-07 07:39:59 -07:00
reiserfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
romfs
fs/romfs: return f_fsid for statfs(2)
2009-04-07 08:31:10 -07:00
smbfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
squashfs
Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-06 13:30:00 -07:00
sysfs
sysfs: use memdup_user()
2009-04-20 23:02:50 -04:00
sysv
fs/sysv: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
ubifs
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
2009-04-06 15:00:19 -07:00
udf
udf: Don't write integrity descriptor too often
2009-04-02 13:36:28 +02:00
ufs
fs/ufs: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
xfs
xfs: use memdup_user()
2009-04-20 23:02:51 -04:00
aio.c
aio: lookup_ioctx can return the wrong value when looking up a bogus context
2009-03-19 15:57:18 -07:00
anon_inodes.c
constify dentry_operations: rest
2009-03-27 14:44:03 -04:00
attr.c
vfs: Use lowercase names of quota functions
2009-03-26 02:18:35 +01:00
bad_inode.c
…
binfmt_aout.c
sanitize ifdefs in binfmt_aout
2009-01-03 11:45:54 -08:00
binfmt_elf_fdpic.c
bin_elf_fdpic: check the return value of clear_user
2009-04-02 19:05:01 -07:00
binfmt_elf.c
Trim includes in binfmt_elf
2009-03-31 23:00:27 -04:00
binfmt_em86.c
…
binfmt_flat.c
FLAT: Don't attempt to expand the userspace stack to fill the space allocated
2009-01-08 12:04:47 +00:00
binfmt_misc.c
fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status
2009-01-06 15:59:19 -08:00
binfmt_script.c
…
binfmt_som.c
Don't crap into descriptor table in binfmt_som
2009-03-31 23:00:28 -04:00
bio-integrity.c
block: add private bio_set for bio integrity allocations
2009-03-24 12:35:17 +01:00
bio.c
bio: add documentation to bio_alloc()
2009-04-15 12:10:12 +02:00
block_dev.c
Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225
2009-04-01 07:07:16 -04:00
buffer.c
Add block_write_full_page_endio for passing endio handler
2009-04-16 07:47:49 -07:00
char_dev.c
fs: fix name overwrite in __register_chrdev_region()
2009-01-06 15:59:13 -08:00
compat_binfmt_elf.c
…
compat_ioctl.c
fs/compat_ioctl: fix build when !BLOCK
2009-04-20 23:01:16 -04:00
compat.c
do_execve() must not clear fs->in_exec if it was set by another thread
2009-04-24 07:39:45 -07:00
dcache.c
No need for crossing to mountpoint in audit_tag_tree()
2009-04-20 23:01:15 -04:00
dcookies.c
[CVE-2009-0029] System call wrapper special cases
2009-01-14 14:15:18 +01:00
direct-io.c
dio: Remove code handling bio_alloc failure with __GFP_WAIT
2009-04-15 12:10:13 +02:00
drop_caches.c
vfs: skip I_CLEAR state inodes
2009-04-02 19:04:48 -07:00
eventfd.c
epoll keyed wakeups: make eventfd use keyed wakeups
2009-04-01 08:59:20 -07:00
eventpoll.c
epoll keyed wakeups: teach epoll about hints coming with the wakeup key
2009-04-01 08:59:20 -07:00
exec.c
check_unsafe_exec: s/lock_task_sighand/rcu_read_lock/
2009-04-24 07:39:45 -07:00
fcntl.c
Fix a lockdep warning in fasync_helper()
2009-03-30 08:00:24 -06:00
fifo.c
…
file_table.c
trivial: remove unused variable 'path' in alloc_file()
2009-03-30 15:22:03 +02:00
file.c
…
filesystems.c
fs: Mark get_filesystem_list() as __init function.
2009-04-20 23:02:52 -04:00
fs_struct.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
fs-writeback.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2009-04-03 15:24:35 -07:00
generic_acl.c
New helper - current_umask()
2009-03-31 23:00:26 -04:00
inode.c
splice: add helpers for locking pipe inode
2009-04-15 12:10:12 +02:00
internal.h
New locking/refcounting for fs_struct
2009-03-31 23:00:26 -04:00
ioctl.c
Rationalize fasync return values
2009-03-16 08:34:35 -06:00
ioprio.c
[CVE-2009-0029] System call wrappers part 28
2009-01-14 14:15:30 +01:00
Kconfig
nilfs2: update makefile and Kconfig
2009-04-07 08:31:16 -07:00
Kconfig.binfmt
CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE
2009-01-09 16:54:41 -08:00
libfs.c
kmemtrace, fs: uninline simple_transaction_set()
2009-04-03 12:09:09 +02:00
locks.c
[CVE-2009-0029] System call wrappers part 16
2009-01-14 14:15:25 +01:00
Makefile
nilfs2: update makefile and Kconfig
2009-04-07 08:31:16 -07:00
mbcache.c
…
mpage.c
Remove two unneeded exports and make two symbols static in fs/mpage.c
2009-04-01 07:38:54 -04:00
namei.c
Fix i_mutex vs. readdir handling in nfsd
2009-04-20 23:01:16 -04:00
namespace.c
Touch all affected namespaces on propagation of mount
2009-04-20 23:01:15 -04:00
nfsctl.c
[CVE-2009-0029] System call wrappers part 27
2009-01-14 14:15:29 +01:00
no-block.c
…
open.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
pipe.c
splice: add helpers for locking pipe inode
2009-04-15 12:10:12 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
…
read_write.c
Make non-compat preadv/pwritev use native register size
2009-04-04 14:20:34 -07:00
read_write.h
…
readdir.c
[CVE-2009-0029] System call wrappers part 32
2009-01-14 14:15:31 +01:00
select.c
[CVE-2009-0029] System call wrappers part 32
2009-01-14 14:15:31 +01:00
seq_file.c
cpumask: fix seq_bitmap_*() functions.
2009-03-30 22:05:11 +10:30
signalfd.c
[CVE-2009-0029] System call wrappers part 31
2009-01-14 14:15:31 +01:00
splice.c
splice: fix new kernel-doc warnings
2009-04-17 07:38:07 -07:00
stack.c
…
stat.c
kill vfs_stat_fd / vfs_lstat_fd
2009-04-20 23:02:52 -04:00
super.c
namespaces: move proc_net_get_sb to a generic fs/super.c helper
2009-04-07 08:31:09 -07:00
sync.c
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6
2009-03-27 14:48:34 -07:00
timerfd.c
timerfd: add flags check
2009-02-18 15:37:53 -08:00
utimes.c
[CVE-2009-0029] System call wrappers part 30
2009-01-14 14:15:30 +01:00
xattr_acl.c
…
xattr.c
xattr: use memdup_user()
2009-04-20 23:02:50 -04:00