malhuda/msm-4.14
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Eric W. Biederman cd6a3ce9ec [PATCH] proc: Close the race of a process dying durning lookup 
proc_lookup and task exiting are not synchronized, although some of the
previous code may have suggested that.  Every time before we reuse a dentry
namei.c calls d_op->derevalidate which prevents us from reusing a stale dcache
entry.  Unfortunately it does not prevent us from returning a stale dcache
entry.  This race has been explicitly plugged in proc_pid_lookup but there is
nothing to confine it to just that proc lookup function.

So to prevent the race I call revalidate explictily in all of the proc lookup
functions after I call d_add, and report an error if the revalidate does not
succeed.

Years ago Al Viro did something similar but those changes got lost in the
churn.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:25 -07:00
..
9p
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
2006-06-25 10:54:14 -07:00
adfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
affs
[PATCH] fix %s in affs_fill_super()
2006-06-25 10:01:22 -07:00
afs
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
autofs
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
autofs4
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
befs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
bfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
cifs
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
2006-06-24 13:07:53 -04:00
coda
[PATCH] use list_add_tail() instead of list_add()
2006-06-26 09:58:17 -07:00
configfs
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
cramfs
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
debugfs
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
2006-06-24 13:07:53 -04:00
devfs
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
devpts
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
efs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
exportfs
[PATCH] NFS server subtree_check returns dubious value
2006-05-21 12:59:16 -07:00
ext2
[PATCH] ext2: cleanup: put_page and comment fix
2006-06-25 10:01:25 -07:00
ext3
[PATCH] ext3: Add "-o bh" option
2006-06-26 09:58:20 -07:00
fat
[PATCH] fs/fat/misc.c: unexport fat_sync_bhs
2006-06-23 07:43:03 -07:00
freevxfs
[PATCH] fs/freevxfs: cleanup of spelling errors
2006-06-25 10:01:01 -07:00
fuse
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
2006-06-25 10:54:14 -07:00
hfs
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
hfsplus
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
hostfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
hpfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
hppfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
hugetlbfs
[PATCH] tightening hugetlb strict accounting
2006-06-23 07:42:48 -07:00
isofs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
jbd
[PATCH] ext3: fix memory leak when the journal file is corrupted
2006-06-25 10:01:07 -07:00
jffs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
jffs2
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
jfs
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
lockd
NLM: Fix reclaim races
2006-06-09 09:40:27 -04:00
minix
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
msdos
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
ncpfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
nfs
Fix NFS2 compile error
2006-06-25 12:30:33 -07:00
nfs_common
…
nfsd
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
nls
[PATCH] fs: Use ARRAY_SIZE macro
2006-03-24 07:33:19 -08:00
ntfs
[PATCH] Prepare for __copy_from_user_inatomic to not zero missed bytes
2006-06-25 10:01:09 -07:00
ocfs2
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
openpromfs
[PATCH] openpromfs: factorize out
2006-06-25 10:01:05 -07:00
partitions
[PATCH] make kernel warn about incorrectly sized partitions
2006-06-23 07:43:09 -07:00
proc
[PATCH] proc: Close the race of a process dying durning lookup
2006-06-26 09:58:25 -07:00
qnx4
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
ramfs
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
reiserfs
[PATCH] reiserfs: remove reiserfs_aio_write()
2006-06-26 09:58:19 -07:00
romfs
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
smbfs
[PATCH] fs: use list_move()
2006-06-26 09:58:18 -07:00
sysfs
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
sysv
[PATCH] read_mapping_page for address space
2006-06-23 07:43:02 -07:00
udf
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
ufs
[PATCH] fs/ufs/inode.c: make 2 functions static
2006-06-25 10:01:04 -07:00
vfat
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
xfs
[PATCH] xfs: update ->flush method proto
2006-06-25 17:43:32 -07:00
aio.c
[PATCH] list: use list_replace_init() instead of list_splice_init()
2006-06-23 07:43:07 -07:00
attr.c
…
bad_inode.c
[PATCH] Make most file operations structs in fs/ const
2006-03-28 09:16:06 -08:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
[PATCH] frv: binfmt_elf_fdpic __user annotations
2006-06-23 07:42:54 -07:00
binfmt_elf.c
[PATCH] binflt_elf: remove more casts
2006-06-23 07:43:05 -07:00
binfmt_em86.c
…
binfmt_flat.c
[PATCH] uclinux: use PER_LINUX_32BIT in binfmt_flat
2006-06-25 21:04:24 -07:00
binfmt_misc.c
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
2006-06-24 13:07:53 -04:00
binfmt_script.c
…
binfmt_som.c
…
bio.c
[PATCH] Fix missing ret assignment in __bio_map_user() error path
2006-06-17 10:52:12 -07:00
block_dev.c
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
buffer.c
[PATCH] Kill PF_SYNCWRITE flag
2006-06-23 17:10:39 +02:00
char_dev.c
[PATCH] Simplify proc/devices and fix early termination regression
2006-03-31 12:18:53 -08:00
compat_ioctl.c
[PATCH] i4l: Gigaset drivers: add IOCTLs to compat_ioctl.h
2006-06-26 09:58:23 -07:00
compat.c
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
dcache.c
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
dcookies.c
[PATCH] Use __read_mostly on some hot fs variables
2006-03-26 08:56:56 -08:00
direct-io.c
[PATCH] Kill PF_SYNCWRITE flag
2006-06-23 17:10:39 +02:00
dnotify.c
[PATCH] Use __read_mostly on some hot fs variables
2006-03-26 08:56:56 -08:00
dquot.c
[PATCH] use list_add_tail() instead of list_add()
2006-06-26 09:58:17 -07:00
drop_caches.c
…
eventpoll.c
[PATCH] epoll: use unlocked wqueue operations
2006-06-25 10:01:13 -07:00
exec.c
[PATCH] proc: Rewrite the proc dentry flush on exit optimization
2006-06-26 09:58:24 -07:00
fcntl.c
BUG_ON() Conversion in fs/fcntl.c
2006-04-02 13:37:19 +02:00
fifo.c
[PATCH] pipe.c/fifo.c code cleanups
2006-04-11 13:53:33 +02:00
file_table.c
[PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter
2006-06-23 07:43:06 -07:00
file.c
[PATCH] for_each_possible_cpu: fixes for generic part
2006-03-28 09:16:05 -08:00
filesystems.c
…
fs-writeback.c
[PATCH] Kill PF_SYNCWRITE flag
2006-06-23 17:10:39 +02:00
inode.c
BUG_ON() Conversion in fs/inode.c
2006-04-02 13:38:18 +02:00
inotify_user.c
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
inotify.c
[PATCH] inotify (4/5): allow watch removal from event handler
2006-06-20 05:25:19 -04:00
ioctl.c
…
ioprio.c
[PATCH] lsm: add task_setioprio hook
2006-06-23 07:42:53 -07:00
Kconfig
[PATCH] nfsd kconfig: select things at the closest tristate instead of bool
2006-06-26 09:58:23 -07:00
Kconfig.binfmt
…
libfs.c
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
locks.c
[PATCH] fs/locks.c: make posix_locks_deadlock() static
2006-06-23 07:43:03 -07:00
Makefile
[PATCH] inotify (1/5): split kernel API from userspace support
2006-06-20 05:25:17 -04:00
mbcache.c
[PATCH] Typo fixes
2006-03-28 09:16:08 -08:00
mpage.c
[PATCH] writeback: fix range handling
2006-06-23 07:42:49 -07:00
namei.c
[PATCH] Implement AT_SYMLINK_FOLLOW flag for linkat
2006-06-25 10:01:22 -07:00
namespace.c
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
nfsctl.c
[PATCH] fs: Use ARRAY_SIZE macro
2006-03-24 07:33:19 -08:00
open.c
[PATCH] ftruncate does not always update m/ctime
2006-06-25 10:01:15 -07:00
pipe.c
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
pnode.c
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
pnode.h
…
posix_acl.c
…
quota_v1.c
…
quota_v2.c
[PATCH] sem2mutex: quota
2006-03-23 07:38:11 -08:00
quota.c
[PATCH] sem2mutex: quota
2006-03-23 07:38:11 -08:00
read_write.c
[PATCH] splice: unlikely() optimizations
2006-04-11 13:56:09 +02:00
readdir.c
…
select.c
[PATCH] fs: sys_poll with timeout -1 bug fix
2006-06-25 10:01:22 -07:00
seq_file.c
[PATCH] sem2mutex: fs/seq_file.c
2006-03-23 07:38:12 -08:00
splice.c
[PATCH] splice: retrieve mapping after locking the page
2006-06-23 17:10:39 +02:00
stat.c
[PATCH] powerpc: Wire up *at syscalls
2006-04-28 21:04:59 +10:00
super.c
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
2006-06-24 13:07:53 -04:00
sync.c
[PATCH] writeback: fix range handling
2006-06-23 07:42:49 -07:00
xattr_acl.c
…
xattr.c
[PATCH] log more info for directory entry change events
2006-06-20 05:25:28 -04:00