Merge 3.15 bugfixes for 3.16

2 files changed, 14 insertions, 3 deletions

diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
index 05c9b2f9427b..7c7c02554a81 100644
--- a/fs/nfsd/nfs4acl.c
+++ b/fs/nfsd/nfs4acl.c
@@ -589,7 +589,7 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
                 add_to_mask(state, &state->groups->aces[i].perms);
         }
 
-        if (!state->users->n && !state->groups->n) {
+        if (state->users->n || state->groups->n) {
                 pace++;
                 pace->e_tag = ACL_MASK;
                 low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c6ded9feaef9..a037627ce5c7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3716,9 +3716,16 @@ out:
 static __be32
 nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp)
 {
-        if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner)))
+        struct nfs4_lockowner *lo = lockowner(stp->st_stateowner);
+
+        if (check_for_locks(stp->st_file, lo))
                 return nfserr_locks_held;
-        release_lock_stateid(stp);
+        /*
+         * Currently there's a 1-1 lock stateid<->lockowner
+         * correspondance, and we have to delete the lockowner when we
+         * delete the lock stateid:
+         */
+        unhash_lockowner(lo);
         return nfs_ok;
 }
 
@@ -4158,6 +4165,10 @@ static bool same_lockowner_ino(struct nfs4_lockowner *lo, struct inode *inode, c
 
         if (!same_owner_str(&lo->lo_owner, owner, clid))
                 return false;
+        if (list_empty(&lo->lo_owner.so_stateids)) {
+                WARN_ON_ONCE(1);
+                return false;
+        }
         lst = list_first_entry(&lo->lo_owner.so_stateids,
                                struct nfs4_ol_stateid, st_perstateowner);
         return lst->st_file->fi_inode == inode;