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linux-stable/fs/afs
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David Howells 6b3944e42e afs: Fix cell proc list 
Access to the list of cells by /proc/net/afs/cells has a couple of
problems:

 (1) It should be checking against SEQ_START_TOKEN for the keying the
     header line.

 (2) It's only holding the RCU read lock, so it can't just walk over the
     list without following the proper RCU methods.

Fix these by using an hlist instead of an ordinary list and using the
appropriate accessor functions to follow it with RCU.

Since the code that adds a cell to the list must also necessarily change,
sort the list on insertion whilst we're at it.

Fixes: 989782dcdc ("afs: Overhaul cell database management")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-12 13:18:57 +02:00
..
addr_list.c Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
afs.h afs: Rearrange status mapping 2018-04-09 21:53:59 +01:00
afs_cm.h
afs_fs.h afs: Prospectively look up extra files when doing a single lookup 2018-04-09 21:12:31 +01:00
afs_vl.h afs: Make use of the YFS service upgrade to fully support IPv6 2017-11-13 15:38:19 +00:00
cache.c fscache: Pass object size in rather than calling back for it 2018-04-06 14:05:14 +01:00
callback.c afs: Optimise callback breaking by not repeating volume lookup 2018-06-15 15:27:09 +01:00
cell.c afs: Fix cell proc list 2018-10-12 13:18:57 +02:00
cmservice.c Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
dir.c afs_try_auto_mntpt(): return NULL instead of ERR_PTR(-ENOENT) 2018-08-05 15:50:59 -04:00
dir_edit.c afs: Locally edit directory data for mkdir/create/unlink/... 2018-04-09 21:54:48 +01:00
dynroot.c afs: Fix cell proc list 2018-10-12 13:18:57 +02:00
file.c afs: Fix whole-volume callback handling 2018-05-14 15:15:18 +01:00
flock.c afs: Fix whole-volume callback handling 2018-05-14 15:15:18 +01:00
fsclient.c Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-16 16:32:04 +09:00
inode.c afs: Fix whole-volume callback handling 2018-05-14 15:15:18 +01:00
internal.h afs: Fix cell proc list 2018-10-12 13:18:57 +02:00
Kconfig
main.c afs: Fix cell proc list 2018-10-12 13:18:57 +02:00
Makefile afs: Handle CONFIG_PROC_FS=n 2018-06-15 00:52:55 -04:00
misc.c afs: Consolidate abort_to_error translators 2017-11-13 15:38:17 +00:00
mntpt.c afs: Support the AFS dynamic root 2018-02-06 14:43:37 +00:00
netdevices.c afs: Implement network namespacing 2018-05-23 12:01:15 +01:00
proc.c afs: Fix cell proc list 2018-10-12 13:18:57 +02:00
rotate.c rxrpc: Fix handling of call quietly cancelled out on server 2018-06-04 16:06:26 -04:00
rxrpc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
security.c afs: Fix directory permissions check 2018-05-16 21:35:23 +01:00
server.c afs: Optimise callback breaking by not repeating volume lookup 2018-06-15 15:27:09 +01:00
server_list.c afs: Fix refcounting in callback registration 2018-05-14 13:17:35 +01:00
super.c afs: Display manually added cells in dynamic root mount 2018-06-15 15:27:09 +01:00
vlclient.c afs: Fix mounting of backup volumes 2018-05-16 21:35:23 +01:00
volume.c fscache: Pass object size in rather than calling back for it 2018-04-06 14:05:14 +01:00
write.c fs/afs: use new return type vm_fault_t 2018-08-23 18:48:43 -07:00
xattr.c afs: Overhaul volume and server record caching and fileserver rotation 2017-11-13 15:38:19 +00:00
xdr_fs.h afs: Adjust the directory XDR structures 2018-04-09 21:54:48 +01:00