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Bruce Allan f35279d3f7 [PATCH] sunrpc: cache_register can use wrong module reference 
When registering an RPC cache, cache_register() always sets the owner as the
sunrpc module.  However, there are RPC caches owned by other modules.  With
the incorrect owner setting, the real owning module can be removed potentially
with an open reference to the cache from userspace.

For example, if one were to stop the nfs server and unmount the nfsd
filesystem, the nfsd module could be removed eventhough rpc.idmapd had
references to the idtoname and nametoid caches (i.e.
/proc/net/rpc/nfs4.<cachename>/channel is still open).  This resulted in a
system panic on one of our machines when attempting to restart the nfs
services after reloading the nfsd module.

The following patch adds a 'struct module *owner' field in struct
cache_detail.  The owner is further assigned to the struct proc_dir_entry
in cache_register() so that the module cannot be unloaded while user-space
daemons have an open reference on the associated file under /proc.

Signed-off-by: Bruce Allan <bwa@us.ibm.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-09-07 16:57:25 -07:00
..
adfs [ARM] fs/adfs/adfs.h: "extern inline" doesn't make sense 2005-08-20 17:20:28 +01:00
affs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
afs [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
autofs Fix nasty ncpfs symlink handling bug. 2005-08-19 18:02:56 -07:00
autofs4 [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
befs befs: fix up missed follow_link declaration change 2005-08-20 13:20:01 -07:00
bfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cifs [PATCH] Fix oops in fs/locks.c on close of file with pending locks 2005-08-26 16:05:35 -07:00
coda [PATCH] class: convert the remaining class_simple users in the kernel to usee the new class api 2005-06-20 15:15:11 -07:00
cramfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
debugfs [PATCH] remove duplicate get_dentry functions in various places 2005-06-23 09:45:20 -07:00
devfs [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
devpts [PATCH] Generic VFS fallback for security xattrs 2005-09-05 00:05:52 -07:00
efs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exportfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ext2 [PATCH] disk quotas fail when /etc/mtab is symlinked to /proc/mounts 2005-09-07 16:57:23 -07:00
ext3 [PATCH] disk quotas fail when /etc/mtab is symlinked to /proc/mounts 2005-09-07 16:57:23 -07:00
fat [PATCH] fatfs sectioning fix 2005-06-30 22:29:48 -07:00
freevxfs [PATCH] freevxfs: fix breakage introduced by symlink fixes 2005-08-20 14:30:50 -07:00
hfs [PATCH] hfs: don't reference missing page 2005-08-01 21:38:00 -07:00
hfsplus [PATCH] hfs: don't reference missing page 2005-08-01 21:38:00 -07:00
hostfs [PATCH] uml: implement hostfs syncing 2005-07-28 21:46:05 -07:00
hpfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hppfs [PATCH] hppfs: fix symlink error path 2005-08-26 11:39:19 -07:00
hugetlbfs [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
isofs Check input buffer size in zisofs 2005-08-06 09:42:06 -07:00
jbd [PATCH] fs/jbd/: cleanups 2005-09-07 16:57:19 -07:00
jffs [PATCH] Fix missing refrigerator invocation in jffs2 2005-07-27 16:25:49 -07:00
jffs2 [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
jfs [PATCH] disk quotas fail when /etc/mtab is symlinked to /proc/mounts 2005-09-07 16:57:23 -07:00
lockd [PATCH] NFS: procfs/sysctl interfaces for lockd do not work on x86_64 2005-07-13 11:25:24 -07:00
minix Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msdos Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ncpfs [PATCH] fs/ncpfs/: remove unused #ifdef USE_OLD_SLOW_DIRECTORY_LISTING code 2005-06-25 16:25:04 -07:00
nfs [PATCH] NFSv4: unbalanced BKL in nfs_atomic_lookup() 2005-08-19 18:44:56 -07:00
nfs_common [PATCH] NFS: Ensure ACL xdr code doesn't overflow. 2005-08-16 08:52:11 -07:00
nfsd [PATCH] sunrpc: cache_register can use wrong module reference 2005-09-07 16:57:25 -07:00
nls [PATCH] make some things static 2005-05-05 16:36:47 -07:00
ntfs NTFS: Complete the previous fix for the unset device when mapping buffers 2005-08-16 19:42:56 +01:00
openpromfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
partitions [PATCH] small partitions/msdos cleanups 2005-06-25 16:24:59 -07:00
proc [PATCH] add /proc/pid/smaps 2005-09-05 00:05:49 -07:00
qnx4 [PATCH] fs/qnx4/*: fix sparse warnings 2005-06-24 14:14:24 -07:00
ramfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reiserfs [PATCH] reiserfs+acl+quota deadlock fix 2005-08-18 12:53:57 -07:00
relayfs [PATCH] relayfs 2005-09-07 16:57:18 -07:00
romfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smbfs [TCP]: Move the tcp sock states to net/tcp_states.h 2005-08-29 15:41:54 -07:00
sysfs [PATCH] Fix oops in sysfs_hash_and_remove_file() 2005-08-26 19:37:13 -07:00
sysv [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
udf [PATCH] udf_find_entry() cleanup 2005-06-30 08:45:11 -07:00
ufs [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
umsdos Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfat Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xfs [PATCH] Fix up symlink function pointers 2005-08-19 18:08:21 -07:00
Kconfig [PATCH] relayfs 2005-09-07 16:57:18 -07:00
Kconfig.binfmt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] relayfs 2005-09-07 16:57:18 -07:00
aio.c [PATCH] uml: fixes performance regression in activate_mm and thus exec() 2005-09-05 00:06:21 -07:00
attr.c [PATCH] inotify 2005-07-12 20:38:38 -07:00
bad_inode.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
binfmt_aout.c [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
binfmt_elf.c [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
binfmt_elf_fdpic.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_em86.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_flat.c [PATCH] uclinux: use MAP_PRIVATE when mmaping code regions in flat binary loader 2005-09-02 00:57:31 -07:00
binfmt_misc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_script.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_som.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bio.c [PATCH] kill bio->bi_set 2005-09-07 16:57:20 -07:00
block_dev.c [PATCH] block: add unlocked_ioctl support for block devices 2005-06-23 09:45:32 -07:00
buffer.c [PATCH] page_uptodate locking scalability 2005-07-07 18:23:45 -07:00
char_dev.c [PATCH] cdev: cdev_put oops 2005-07-12 16:01:02 -07:00
compat.c [PATCH] remove register_ioctl32_conversion and unregister_ioctl32_conversion 2005-09-07 16:57:20 -07:00
compat_ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dcache.c [PATCH] fsnotify_name/inoderemove 2005-08-08 11:53:47 -07:00
dcookies.c [PATCH] dcookies.c: use proper refcounting functions 2005-07-07 18:23:52 -07:00
direct-io.c [PATCH] pass iocb to dio_iodone_t 2005-06-24 00:05:19 -07:00
dnotify.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dquot.c [PATCH] list_for_each_entry: fs-dquot.c 2005-06-25 16:25:11 -07:00
eventpoll.c [PATCH] Remove eventpoll macro obfuscation 2005-06-23 09:45:30 -07:00
exec.c [PATCH] reset real_timer target on exec leader change 2005-07-12 16:01:01 -07:00
fcntl.c [PATCH] stale POSIX lock handling 2005-07-27 16:26:06 -07:00
fifo.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
file.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
file_table.c [PATCH] inotify 2005-07-12 20:38:38 -07:00
filesystems.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fs-writeback.c [PATCH] O(1) sb list traversing on syncs 2005-06-23 09:45:27 -07:00
inode.c [PATCH] Fix soft lockup due to NTFS: VFS part and explanation 2005-07-13 11:25:24 -07:00
inotify.c [PATCH] inotify speedup 2005-09-07 16:57:19 -07:00
ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioprio.c Don't allow normal users to set idle IO priority 2005-08-20 18:51:29 -07:00
libfs.c [PATCH] fix fsync(dir) return value for ram-based filesystems 2005-06-25 16:24:38 -07:00
locks.c [PATCH] stale POSIX lock handling 2005-07-27 16:26:06 -07:00
mbcache.c [PATCH] mbcache: Remove unused mb_cache_shrink parameter 2005-07-27 16:26:07 -07:00
mpage.c [PATCH] mpage_end_io_write() I/O error handling fix 2005-06-04 17:12:59 -07:00
namei.c Fix nasty ncpfs symlink handling bug. 2005-08-19 18:02:56 -07:00
namespace.c [PATCH] namespace.c: fix bind mount from foreign namespace 2005-08-07 10:00:38 -07:00
nfsctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
open.c [PATCH] inotify 2005-07-12 20:38:38 -07:00
pipe.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix_acl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
quota.c [PATCH] O(1) sb list traversing on syncs 2005-06-23 09:45:27 -07:00
quota_v1.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
quota_v2.c [PATCH] quota: possible bug in quota format v2 support 2005-04-16 15:25:47 -07:00
read_write.c [PATCH] inotify 2005-07-12 20:38:38 -07:00
readdir.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
select.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
seq_file.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
stat.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
super.c [PATCH] set mnt_namespace in the correct place 2005-07-07 18:23:52 -07:00
xattr.c [PATCH] Generic VFS fallback for security xattrs 2005-09-05 00:05:52 -07:00
xattr_acl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00