Jeff Layton dd257933fa nfsd: don't return an unhashed lock stateid after taking mutex ... nfsd4_lock will take the st_mutex before working with the stateid it gets, but between the time when we drop the cl_lock and take the mutex, the stateid could become unhashed (a'la FREE_STATEID). If that happens the lock stateid returned to the client will be forgotten. Fix this by first moving the st_mutex acquisition into lookup_or_create_lock_state. Then, have it check to see if the lock stateid is still hashed after taking the mutex. If it's not, then put the stateid and try the find/create again. Signed-off-by: Jeff Layton <jlayton@redhat.com> Tested-by: Alexey Kodanev <alexey.kodanev@oracle.com> Cc: stable@vger.kernel.org # feb9dad5 nfsd: Always lock state exclusively. Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>		2016-08-12 16:10:25 -04:00
..
acl.h
auth.c
auth.h
blocklayout.c	Highlights:	2016-08-04 19:59:06 -04:00
blocklayoutxdr.c	Highlights:	2016-08-04 19:59:06 -04:00
blocklayoutxdr.h	nfsd: add SCSI layout support	2016-03-18 11:42:53 -04:00
cache.h
current_stateid.h
export.c	nfsd: allow nfsd to advertise multiple layout types	2016-07-15 15:31:32 -04:00
export.h	nfsd: allow nfsd to advertise multiple layout types	2016-07-15 15:31:32 -04:00
fault_inject.c
flexfilelayout.c	nfsd: Add a super simple flex file server	2016-07-13 15:40:48 -04:00
flexfilelayoutxdr.c	nfsd: Add a super simple flex file server	2016-07-13 15:40:48 -04:00
flexfilelayoutxdr.h	nfsd: Add a super simple flex file server	2016-07-13 15:40:48 -04:00
idmap.h
Kconfig	xfs: abstract block export operations from nfsd layouts	2016-07-15 15:31:29 -04:00
lockd.c
Makefile	nfsd: Add a super simple flex file server	2016-07-13 15:40:48 -04:00
netns.h
nfs2acl.c	nfsd: check permissions when setting ACLs	2016-06-24 12:11:52 -04:00
nfs3acl.c	nfsd: check permissions when setting ACLs	2016-06-24 12:11:52 -04:00
nfs3proc.c	don't bother with ->d_inode->i_sb - it's always equal to ->d_sb	2016-04-10 17:11:51 -04:00
nfs3xdr.c	A very quiet cycle for nfsd, mainly just an RDMA update from Chuck Lever.	2016-05-24 14:39:20 -07:00
nfs4acl.c	nfsd: check permissions when setting ACLs	2016-06-24 12:11:52 -04:00
nfs4callback.c	nfsd4/rpc: move backchannel create logic into rpc code	2016-06-15 10:32:25 -04:00
nfs4idmap.c
nfs4layouts.c	nfsd: allow nfsd to advertise multiple layout types	2016-07-15 15:31:32 -04:00
nfs4proc.c	nfsd: drop unnecessary MAY_EXEC check from create	2016-08-04 17:11:52 -04:00
nfs4recover.c	Various bugfixes, a RDMA update from Chuck Lever, and support for a new	2016-03-24 10:41:00 -07:00
nfs4state.c	nfsd: don't return an unhashed lock stateid after taking mutex	2016-08-12 16:10:25 -04:00
nfs4xdr.c	nfsd: allow nfsd to advertise multiple layout types	2016-07-15 15:31:32 -04:00
nfscache.c
nfsctl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2016-07-29 15:54:19 -07:00
nfsd.h	nfsd: implement machine credential support for some operations	2016-07-13 15:32:47 -04:00
nfsfh.c	nfsd: check d_can_lookup in fh_verify of directories	2016-08-04 17:11:48 -04:00
nfsfh.h	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
nfsproc.c	nfsd: reorganize nfsd_create	2016-08-04 17:11:49 -04:00
nfssvc.c
nfsxdr.c	nfsd: Fix some indent inconsistancy	2016-07-13 15:53:41 -04:00
pnfs.h	nfsd: Add a super simple flex file server	2016-07-13 15:40:48 -04:00
state.h	nfsd: implement machine credential support for some operations	2016-07-13 15:32:47 -04:00
stats.c	drop redundant ->owner initializations	2016-05-29 19:08:00 -04:00
stats.h
trace.c
trace.h	nfsd: add new io class tracepoint	2016-01-14 17:32:51 -05:00
vfs.c	nfsd: fix dentry refcounting on create	2016-08-11 11:42:08 -04:00
vfs.h	nfsd: reorganize nfsd_create	2016-08-04 17:11:49 -04:00
xdr3.h
xdr4.h	nfsd: implement machine credential support for some operations	2016-07-13 15:32:47 -04:00
xdr4cb.h
xdr.h