OpenSDV
/
linux-stable-rt
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux-stable-rt/fs
History
Oleg Nesterov a893a84e87 mm_for_maps: simplify, use ptrace_may_access() 
It would be nice to kill __ptrace_may_access(). It requires task_lock(),
but this lock is only needed to read mm->flags in the middle.

Convert mm_for_maps() to use ptrace_may_access(), this also simplifies
the code a little bit.

Also, we do not need to take ->mmap_sem in advance. In fact I think
mm_for_maps() should not play with ->mmap_sem at all, the caller should
take this lock.

With or without this patch, without ->cred_guard_mutex held we can race
with exec() and get the new ->mm but check old creds.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
 		2009-06-25 00:20:58 +10:00
..
9p 9P doesn't need BKL in ->umount_begin() 2009-06-17 00:36:36 -04:00
adfs Cleanup of adfs headers 2009-06-17 00:36:36 -04:00
affs affs: add ->sync_fs 2009-06-11 21:36:14 -04:00
afs AFS: Correctly translate auth error aborts and don't failover in such cases 2009-06-16 21:20:14 -07:00
autofs switch follow_down() 2009-06-11 21:36:01 -04:00
autofs4 switch follow_down() 2009-06-11 21:36:01 -04:00
befs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-06-17 08:46:57 -07:00
bfs bfs: add ->sync_fs 2009-06-11 21:36:14 -04:00
btrfs Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2009-06-16 11:46:45 -07:00
cachefiles enforce ->sync_fs is only called for rw superblock 2009-06-11 21:36:06 -04:00
cifs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
coda splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
configfs configfs: Rework configfs_depend_item() locking and make lockdep happy 2009-04-30 10:48:26 -07:00
cramfs
…
debugfs debugfs: use specified mode to possibly mark files read/write only 2009-06-15 21:30:28 -07:00
devpts devpts: unregister the file system on error 2009-06-11 08:51:06 -07:00
dlm dlm: use more NOFS allocation 2009-05-15 11:24:59 -05:00
ecryptfs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
efs get rid of BKL in fs/efs 2009-06-17 00:36:36 -04:00
exofs [SCSI] Merge branch 'linus' 2009-06-12 10:02:03 -05:00
exportfs
…
ext2 ext2: Do not update mtime of a moved directory 2009-06-18 13:03:44 -07:00
ext3 ext3: make sure inode is deleted from orphan list after truncate 2009-06-18 13:03:45 -07:00
ext4 ext4: avoid unnecessary spinlock in critical POSIX ACL path 2009-06-17 00:36:35 -04:00
fat Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-06-16 13:06:10 -07:00
freevxfs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
fscache FS-Cache: Fixup renamed filenames in comments in internal.h 2009-05-27 10:20:13 -07:00
fuse fuse doesn't need BKL in ->umount_begin() 2009-06-17 00:36:36 -04:00
gfs2 GFS2: Remove lock_kernel from gfs2_put_super() 2009-06-12 13:40:47 +01:00
hfs hfs: add ->sync_fs 2009-06-11 21:36:15 -04:00
hfsplus hfsplus: add ->sync_fs 2009-06-11 21:36:16 -04:00
hostfs
…
hpfs Push BKL down into ->remount_fs() 2009-06-11 21:36:11 -04:00
hppfs
…
hugetlbfs Merge branch 'master' into next 2009-05-22 18:40:59 +10:00
isofs isofs: cleanup mount option processing 2009-06-18 13:03:45 -07:00
jbd jbd: clean up journal_try_to_free_buffers() 2009-06-18 13:03:45 -07:00
jbd2 jbd2: clean up jbd2_journal_try_to_free_buffers() 2009-06-17 20:08:51 -04:00
jffs2 jffs2: call jffs2_write_super from jffs2_sync_fs 2009-06-11 21:36:16 -04:00
jfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 2009-06-16 12:23:52 -07:00
lockd lockd: fix list corruption on lockd restart 2009-05-06 17:19:36 -04:00
minix get rid of BKL in fs/minix 2009-06-17 00:36:37 -04:00
ncpfs NLS: update handling of Unicode 2009-06-15 21:44:43 -07:00
nfs remove put_cpu_no_resched() 2009-06-16 19:47:48 -07:00
nfs_common
…
nfsd switch follow_down() 2009-06-11 21:36:01 -04:00
nilfs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 2009-06-15 09:13:49 -07:00
nls NLS: update handling of Unicode 2009-06-15 21:44:43 -07:00
notify fsnotify: allow groups to set freeing_mark to null 2009-06-11 14:57:55 -04:00
ntfs ntfs: use is_power_of_2() function for clarity. 2009-06-16 19:47:48 -07:00
ocfs2 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 2009-06-16 12:11:57 -07:00
omfs switch omfs to simple_fsync() 2009-06-11 21:36:13 -04:00
openpromfs
…
partitions Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-06-12 09:29:42 -07:00
proc mm_for_maps: simplify, use ptrace_may_access() 2009-06-25 00:20:58 +10:00
qnx4 fs/qnx4: sanitize includes 2009-06-11 21:36:12 -04:00
quota quota: cleanup dquota sync functions (version 4) 2009-06-11 21:36:04 -04:00
ramfs ramfs: ignore unknown mount options 2009-06-14 17:58:25 -07:00
reiserfs reiserfs: fix warnings with gcc 4.4 2009-06-18 13:03:46 -07:00
romfs ROMFS: romfs_dev_read() error ignored 2009-05-09 10:49:41 -04:00
smbfs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
squashfs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
sysfs Sysfs: fix possible memleak in sysfs_follow_link 2009-06-15 21:30:23 -07:00
sysv get rid of BKL in fs/sysv 2009-06-17 00:36:37 -04:00
ubifs Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6 2009-06-17 09:46:33 -07:00
udf switch udf to simple_fsync() 2009-06-11 21:36:13 -04:00
ufs ufs: sector_t cannot be negative 2009-06-18 13:03:46 -07:00
xfs Merge branch 'master' of git://oss.sgi.com/xfs/xfs into for-linus 2009-06-12 21:28:59 -05:00
Kconfig Hugetlbfs: Enable hugetlbfs for more systems in Kconfig. 2009-06-17 11:06:31 +01:00
Kconfig.binfmt
…
Makefile
…
aio.c
…
anon_inodes.c
…
attr.c
…
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf.c elf_core_dump: use rcu_read_lock() to access ->real_parent 2009-06-18 13:03:52 -07:00
binfmt_elf_fdpic.c elf_core_dump: use rcu_read_lock() to access ->real_parent 2009-06-18 13:03:52 -07:00
binfmt_em86.c
…
binfmt_flat.c flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
binfmt_misc.c
…
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
…
bio.c block: remove some includings of blktrace_api.h 2009-06-16 11:19:36 +02:00
block_dev.c vfs: Rename fsync_super() to sync_filesystem() (version 4) 2009-06-11 21:36:04 -04:00
buffer.c Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
char_dev.c fs: Remove i_cindex from struct inode 2009-06-11 21:36:09 -04:00
compat.c trivial: fix comment typo in fs/compat.c 2009-06-12 18:01:44 +02:00
compat_binfmt_elf.c
…
compat_ioctl.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-06-17 09:50:44 -07:00
dcache.c dcache: extrace and use d_unlinked() 2009-06-11 21:36:06 -04:00
dcookies.c
…
direct-io.c block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
drop_caches.c mm: remove __invalidate_mapping_pages variant 2009-06-16 19:47:43 -07:00
eventfd.c eventfd: export eventfd_signal and eventfd_fget for lguest 2009-06-12 22:27:09 +09:30
eventpoll.c epoll: fix nested calls support 2009-06-18 13:03:41 -07:00
exec.c Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-11 14:01:07 -07:00
fcntl.c send_sigio_to_task: sanitize the usage of fown->signum 2009-06-16 15:36:17 -07:00
fifo.c
…
file.c
…
file_table.c fs: move mark_files_ro into file_table.c 2009-06-11 21:36:02 -04:00
filesystems.c
…
fs-writeback.c writeback: skip new or to-be-freed inodes 2009-06-16 19:47:45 -07:00
fs_struct.c
…
generic_acl.c
…
inode.c trivial: fs/inode: Fix typo in file_update_time nanodoc 2009-06-12 18:01:45 +02:00
internal.h Trim a bit of crap from fs.h 2009-06-11 21:36:07 -04:00
ioctl.c No instance of ->bmap() needs BKL 2009-06-17 00:36:35 -04:00
ioprio.c
…
libfs.c New helper - simple_fsync() 2009-06-11 21:36:11 -04:00
locks.c
…
mbcache.c
…
mpage.c
…
namei.c switch lookup_mnt() 2009-06-11 21:36:01 -04:00
namespace.c Push BKL down into do_remount_sb() 2009-06-11 21:36:08 -04:00
nfsctl.c
…
no-block.c
…
open.c fs: introduce mnt_clone_write 2009-06-11 21:36:02 -04:00
pipe.c splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
…
read_write.c splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
read_write.h
…
readdir.c
…
select.c poll: avoid extra wakeups in select/poll 2009-06-16 19:47:48 -07:00
seq_file.c seq_file: add function to write binary data 2009-06-18 13:03:57 -07:00
signalfd.c
…
splice.c splice: fix kmaps in default_file_splice_write() 2009-05-19 11:37:46 +02:00
stack.c
…
stat.c
…
super.c remove unlock_kernel() left accidentally 2009-06-17 00:36:35 -04:00
sync.c remove the call to ->write_super in __sync_filesystem 2009-06-11 21:36:17 -04:00
timerfd.c
…
utimes.c
…
xattr.c fs: introduce mnt_clone_write 2009-06-11 21:36:02 -04:00
xattr_acl.c
…