Eric W. Biederman 077130c0cf [NET]: Fix race when opening a proc file while a network namespace is exiting. ... The problem: proc_net files remember which network namespace the are against but do not remember hold a reference count (as that would pin the network namespace). So we currently have a small window where the reference count on a network namespace may be incremented when opening a /proc file when it has already gone to zero. To fix this introduce maybe_get_net and get_proc_net. maybe_get_net increments the network namespace reference count only if it is greater then zero, ensuring we don't increment a reference count after it has gone to zero. get_proc_net handles all of the magic to go from a proc inode to the network namespace instance and call maybe_get_net on it. PROC_NET the old accessor is removed so that we don't get confused and use the wrong helper function. Then I fix up the callers to use get_proc_net and handle the case case where get_proc_net returns NULL. In that case I return -ENXIO because effectively the network namespace has already gone away so the files we are trying to access don't exist anymore. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2007-10-10 16:49:22 -07:00
..
9p	9p: remove deprecated v9fs_fid_lookup_remove()	2007-08-23 10:13:45 -05:00
adfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
affs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
afs	[NET]: Make the device list and device lookups per namespace.	2007-10-10 16:49:10 -07:00
autofs	…
autofs4	autofs4: deadlock during create	2007-08-22 19:52:46 -07:00
befs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
bfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
cifs	[CIFS] Check return code on failed alloc	2007-08-18 00:15:20 +00:00
coda	coda: remove CODA_STORE/CODA_RELEASE upcalls	2007-07-21 17:49:14 -07:00
configfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
cramfs	…
debugfs	…
devpts	…
dlm	[DLM] fix basts for granted PR waiting CW	2007-08-14 10:31:02 +01:00
ecryptfs	[NET]: Support multiple network namespaces with netlink	2007-10-10 16:49:09 -07:00
efs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
exportfs	…
ext2	fix inode_table test in ext234_check_descriptors	2007-07-26 11:35:17 -07:00
ext3	ext34: ensure do_split leaves enough free space in both blocks	2007-09-19 11:24:18 -07:00
ext4	ext34: ensure do_split leaves enough free space in both blocks	2007-09-19 11:24:18 -07:00
fat	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
freevxfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
fuse	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
gfs2	[GFS2] Revert remounting w/o acl option leaves acls enabled	2007-08-14 10:34:40 +01:00
hfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
hfsplus	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
hostfs	…
hpfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
hppfs	…
hugetlbfs	hugepage: fix broken check for offset alignment in hugepage mappings	2007-08-31 01:42:23 -07:00
isofs	isofs: mounting to regular file may succeed	2007-07-31 15:39:41 -07:00
jbd	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
jbd2	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
jffs2	[JFFS2] fix write deadlock regression	2007-09-02 18:18:38 +01:00
jfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
lockd	NLM: Fix a memory leak in nlmsvc_testlock	2007-10-09 12:38:26 -07:00
minix	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
msdos	…
ncpfs	NCP: delete test of long-deceased CONFIG_NCPFS_DEBUGDENTRY	2007-07-31 15:39:41 -07:00
nfs	NFS: Fix an Oops in encode_lookup()	2007-09-28 15:36:42 -07:00
nfs_common	…
nfsd	knfsd: Validate filehandle type in fsid_source	2007-09-10 18:57:47 -07:00
nls	…
ntfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
ocfs2	ocfs2: Unlock mutex in local alloc failure case	2007-10-03 11:14:45 -07:00
openpromfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
partitions	[PARTITION]: Sun/Solaris VTOC table corrections	2007-07-30 00:27:31 -07:00
proc	[NET]: Fix race when opening a proc file while a network namespace is exiting.	2007-10-10 16:49:22 -07:00
qnx4	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
ramfs	NOMMU: Fix SYSV IPC SHM	2007-07-31 15:39:36 -07:00
reiserfs	quota: fix infinite loop	2007-09-11 17:21:19 -07:00
romfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
smbfs	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
sysfs	sysfs: don't warn on removal of a nonexistent binary file	2007-08-22 14:35:36 -07:00
sysv	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
udf	Fix possible NULL pointer dereference in udf_table_free_blocks()	2007-08-31 01:42:22 -07:00
ufs	ufs: fix sun state	2007-09-25 08:51:04 -07:00
vfat	…
xfs	Revert "[XFS] Avoid replaying inode buffer initialisation log items if on-disk version is newer."	2007-10-01 07:59:03 -07:00
Kconfig	ocfs2: update docs for new features	2007-09-11 11:38:25 -07:00
Kconfig.binfmt	…
Makefile	…
aio.c	AIO: fix cleanup in io_submit_one(...)	2007-10-08 12:58:14 -07:00
anon_inodes.c	…
attr.c	…
bad_inode.c	…
binfmt_aout.c	…
binfmt_elf.c	revert "PIE randomization"	2007-07-21 17:49:14 -07:00
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	binfmt_flat: checkpatch fixing minimum support for the blackfin relocations	2007-10-03 23:43:57 +08:00
binfmt_misc.c	…
binfmt_script.c	…
binfmt_som.c	…
bio.c	[BLOCK] Get rid of request_queue_t typedef	2007-07-24 09:28:11 +02:00
block_dev.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
buffer.c	fix some conversion overflows	2007-07-20 08:44:19 -07:00
char_dev.c	…
compat.c	…
compat_ioctl.c	[NET]: Don't implement dev_ifname32 inline	2007-10-10 16:49:03 -07:00
dcache.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
dcookies.c	Remove fs.h from mm.h	2007-07-29 17:09:29 -07:00
direct-io.c	dio: zero struct dio with kzalloc instead of manually	2007-08-20 22:50:25 -07:00
dnotify.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
dquot.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
drop_caches.c	…
eventfd.c	…
eventpoll.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
exec.c	signalfd simplification	2007-09-20 13:19:59 -07:00
fcntl.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
fifo.c	…
file.c	…
file_table.c	…
filesystems.c	…
fs-writeback.c	…
generic_acl.c	…
inode.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
inotify.c	…
inotify_user.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
internal.h	…
ioctl.c	…
ioprio.c	…
libfs.c	…
locks.c	Leases can be hidden by flocks	2007-09-11 17:21:27 -07:00
mbcache.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
mpage.c	…
namei.c	…
namespace.c	mm: Remove slab destructors from kmem_cache_create().	2007-07-20 10:11:58 +09:00
nfsctl.c	…
no-block.c	…
open.c	VFS: fix a race in lease-breaking during truncate	2007-07-31 15:39:42 -07:00
pipe.c	docbook: add pipes, other fixes	2007-07-27 08:08:51 +02:00
pnode.c	…
pnode.h	…
posix_acl.c	…
quota.c	[IA64] Fix build failure in fs/quota.c	2007-07-27 15:40:13 -07:00
quota_v1.c	…
quota_v2.c	…
read_write.c	…
read_write.h	…
readdir.c	…
select.c	Fix select on /proc files without ->poll	2007-09-11 17:21:20 -07:00
seq_file.c	…
signalfd.c	signalfd simplification	2007-09-20 13:19:59 -07:00
splice.c	Fix possible splice() mmap_sem deadlock	2007-10-01 13:17:28 -07:00
stack.c	…
stat.c	…
super.c	…
sync.c	…
timerfd.c	make timerfd return a u64 and fix the __put_user	2007-07-26 11:35:17 -07:00
utimes.c	…
xattr.c	…
xattr_acl.c	…