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d4a96bec7a
linux/fs/afs
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David Howells d4a96bec7a afs: Fix refcounting in callback registration 
The refcounting on afs_cb_interest struct objects in
afs_register_server_cb_interest() is wrong as it uses the server list
entry's call back interest pointer without regard for the fact that it
might be replaced at any time and the object thrown away.

Fix this by:

 (1) Put a lock on the afs_server_list struct that can be used to
     mediate access to the callback interest pointers in the servers array.

 (2) Keep a ref on the callback interest that we get from the entry.

 (3) Dropping the old reference held by vnode->cb_interest if we replace
     the pointer.

Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
2018-05-14 13:17:35 +01:00
..
addr_list.c afs: Fix address list parsing 2018-05-14 13:17:35 +01:00
afs_cm.h afs: support the CB.ProbeUuid RPC op 2008-04-29 08:06:26 -07:00
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
afs.h afs: Rearrange status mapping 2018-04-09 21:53:59 +01:00
cache.c fscache: Pass object size in rather than calling back for it 2018-04-06 14:05:14 +01:00
callback.c afs: Fix refcounting in callback registration 2018-05-14 13:17:35 +01:00
cell.c afs: Implement @cell substitution handling 2018-04-09 21:18:58 +01:00
cmservice.c afs: Trace protocol errors 2018-04-09 21:54:48 +01:00
dir_edit.c afs: Locally edit directory data for mkdir/create/unlink/... 2018-04-09 21:54:48 +01:00
dir.c afs: Fix directory page locking 2018-05-14 13:17:35 +01:00
dynroot.c afs: Split the dynroot stuff out and give it its own ops tables 2018-04-09 21:54:00 +01:00
file.c afs: Do better accretion of small writes on newly created content 2018-04-09 21:54:48 +01:00
flock.c afs: Make it possible to get the data version in readpage 2018-04-09 21:53:56 +01:00
fsclient.c afs: Trace protocol errors 2018-04-09 21:54:48 +01:00
inode.c afs: Fix directory page locking 2018-05-14 13:17:35 +01:00
internal.h afs: Fix refcounting in callback registration 2018-05-14 13:17:35 +01:00
Kconfig fs/afs: remove depends on CONFIG_EXPERIMENTAL 2013-01-21 14:39:04 -08:00
main.c afs: Implement @sys substitution handling 2018-04-09 21:12:31 +01:00
Makefile afs: Locally edit directory data for mkdir/create/unlink/... 2018-04-09 21:54:48 +01:00
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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
proc.c afs: Add stats for data transfer operations 2018-04-09 21:54:48 +01:00
rotate.c afs: Fix refcounting in callback registration 2018-05-14 13:17:35 +01:00
rxrpc.c afs: Fix giving up callbacks on server destruction 2018-05-14 13:17:35 +01:00
security.c afs: Make it possible to get the data version in readpage 2018-04-09 21:53:56 +01:00
server_list.c afs: Fix refcounting in callback registration 2018-05-14 13:17:35 +01:00
server.c afs: Fix giving up callbacks on server destruction 2018-05-14 13:17:35 +01:00
super.c afs: Fix directory page locking 2018-05-14 13:17:35 +01:00
vlclient.c afs: Trace protocol errors 2018-04-09 21:54:48 +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 Merge branch 'afs-dh' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-04-12 11:59:06 -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