Elena Reshetova 212bf41d88 fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t ... atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable nfs_client.cl_count is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Windsor <dwindsor@gmail.com> Reviewed-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>		2017-11-17 13:48:01 -05:00
..
blocklayout	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
filelayout	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
flexfilelayout	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
cache_lib.c	fs, nfs: convert nfs_cache_defer_req.count from atomic_t to refcount_t	2017-11-17 13:48:00 -05:00
cache_lib.h	fs, nfs: convert nfs_cache_defer_req.count from atomic_t to refcount_t	2017-11-17 13:48:00 -05:00
callback.c	sunrpc: Const-ify struct sv_serv_ops	2017-08-24 22:13:50 -04:00
callback.h	nfs: don't cast callback decode/proc/encode routines	2017-07-13 15:57:56 -04:00
callback_proc.c	NFS: Use an atomic_long_t to count the number of requests	2017-08-15 11:54:47 -04:00
callback_xdr.c	Chuck's RDMA update overhauls the "call receive" side of the	2017-07-13 13:56:24 -07:00
client.c	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
delegation.c	NFS: Use an atomic_long_t to count the number of requests	2017-08-15 11:54:47 -04:00
delegation.h	NFSv4: nfs_inode_find_state_and_recover() should check all stateids	2016-09-27 14:34:35 -04:00
dir.c	NFS: remove special-case revalidate in nfs_opendir()	2017-10-16 13:51:27 -04:00
direct.c	NFSv4: Use a mutex to protect the per-inode commit lists	2017-08-15 11:54:47 -04:00
dns_resolve.c
dns_resolve.h
export.c	nfs: add export operations	2017-07-13 17:12:04 -04:00
file.c	NFS: various changes relating to reporting IO errors.	2017-09-11 22:28:56 -04:00
fscache-index.c	fscache: remove unused ->now_uncached callback	2017-09-06 17:27:26 -07:00
fscache.c
fscache.h
getroot.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
inode.c	fs, nfs: convert nfs_lock_context.count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
internal.h	NFS: various changes relating to reporting IO errors.	2017-09-11 22:28:56 -04:00
io.c	NFS: Do not serialise O_DIRECT reads and writes	2016-07-05 19:11:04 -04:00
iostat.h
Kconfig	pnfs/blocklayout: require 64-bit sector_t	2017-08-11 14:10:13 -04:00
Makefile	nfs: add export operations	2017-07-13 17:12:04 -04:00
mount_clnt.c	nfs: count correct array for mnt3_counts array size	2017-07-21 08:49:57 -04:00
namespace.c	NFS: Use ERR_CAST() to avoid cross-structure cast	2017-05-28 10:11:47 -07:00
netns.h	netns: make struct pernet_operations::id unsigned int	2016-11-18 10:59:15 -05:00
nfs.h
nfs2super.c
nfs2xdr.c	NFS: convert flags to bool	2017-07-13 15:58:04 -04:00
nfs3_fs.h
nfs3acl.c	posix_acl: Inode acl caching fixes	2016-03-31 00:30:15 -04:00
nfs3client.c	NFS: Remove unused authflavour parameter from nfs_get_client()	2016-12-01 17:46:32 -05:00
nfs3proc.c	NFS: Don't compare apples to elephants to determine access bits	2017-10-16 13:51:27 -04:00
nfs3super.c
nfs3xdr.c	NFS: convert flags to bool	2017-07-13 15:58:04 -04:00
nfs4_fs.h	fs, nfs: convert nfs4_lock_state.ls_count from atomic_t to refcount_t	2017-11-17 13:48:00 -05:00
nfs4client.c	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
nfs4file.c	NFSv4: add flock_owner to open context	2016-12-01 17:57:27 -05:00
nfs4getroot.c	NFS: Clean up nfs4_get_rootfh()	2017-04-20 13:39:35 -04:00
nfs4idmap.c	NFS: Cleanup error handling in nfs_idmap_request_key()	2017-10-01 18:51:30 -04:00
nfs4idmap.h
nfs4namespace.c	NFS: Remove extra dprintk()s from nfs4namespace.c	2017-04-20 13:39:35 -04:00
nfs4proc.c	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
nfs4renewd.c	NFSv4: Set the connection timeout to match the lease period	2017-02-09 14:15:16 -05:00
nfs4session.c	NFSv4.1: Fix regression in callback retry handling	2016-12-01 17:21:38 -05:00
nfs4session.h	NFS: Make trace_nfs4_setup_sequence() available to NFS v4.0	2017-01-30 13:14:50 -05:00
nfs4state.c	fs, nfs: convert nfs_client.cl_count from atomic_t to refcount_t	2017-11-17 13:48:01 -05:00
nfs4super.c
nfs4sysctl.c	nfs: do not initialise statics to 0	2015-12-28 09:57:15 -05:00
nfs4trace.c	pNFS: Modify pnfs_update_layout tracepoints to use layout stateid	2015-12-28 09:57:14 -05:00
nfs4trace.h	nfs4: add NFSv4 LOOKUPP handlers	2017-07-13 16:00:15 -04:00
nfs4xdr.c	nfs: RPC_MAX_AUTH_SIZE is in bytes	2017-10-01 18:51:30 -04:00
nfs42.h	NFS: Add COPY nfs operation	2016-05-17 15:47:55 -04:00
nfs42proc.c	NFSv4.2 fix size storage for nfs42_proc_copy	2017-07-13 16:00:14 -04:00
nfs42xdr.c	nfs: fix decoder callback prototypes	2017-07-13 15:57:56 -04:00
nfsroot.c	nfsroot: make nfsroot to accept the 1024 bytes long directory name	2015-10-21 15:49:19 -05:00
nfstrace.c
nfstrace.h	NFS: Add static NFS I/O tracepoints	2017-09-11 22:20:38 -04:00
pagelist.c	NFS: various changes relating to reporting IO errors.	2017-09-11 22:28:56 -04:00
pnfs.c	fs, nfs: convert pnfs_layout_hdr.plh_refcount from atomic_t to refcount_t	2017-11-17 13:47:59 -05:00
pnfs.h	fs, nfs: convert pnfs_layout_hdr.plh_refcount from atomic_t to refcount_t	2017-11-17 13:47:59 -05:00
pnfs_dev.c
pnfs_nfs.c	fs, nfs: convert nfs4_pnfs_ds.ds_count from atomic_t to refcount_t	2017-11-17 13:47:59 -05:00
proc.c	NFS: convert flags to bool	2017-07-13 15:58:04 -04:00
read.c	NFS: Add static NFS I/O tracepoints	2017-09-11 22:20:38 -04:00
super.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 18:54:01 -07:00
symlink.c	vfs: remove ".readlink = generic_readlink" assignments	2016-12-09 16:45:04 +01:00
sysctl.c
unlink.c	NFS: nfs_rename() - revalidate directories on -ERESTARTSYS	2017-07-13 15:58:04 -04:00
write.c	NFS: various changes relating to reporting IO errors.	2017-09-11 22:28:56 -04:00