From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Thu, 27 Feb 2020 11:01:12 -0500
Subject: [PATCH] NFSv4/pnfs: Return valid stateids in
nfs_layout_find_inode_by_stateid()
Git-commit: d911c57a19551c6bef116a3b55c6b089901aacb0
Patch-mainline: v5.7
References: git-fixes
Make sure to test the stateid for validity so that we catch instances
where the server may have been reusing stateids in
nfs_layout_find_inode_by_stateid().
Fixes: 7b410d9ce460 ("pNFS: Delay getting the layout header in CB_LAYOUTRECALL handlers")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Acked-by: NeilBrown <neilb@suse.com>
---
fs/nfs/callback_proc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -124,6 +124,8 @@ static struct inode *nfs_layout_find_ino
restart:
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
list_for_each_entry(lo, &server->layouts, plh_layouts) {
+ if (!pnfs_layout_is_valid(lo))
+ continue;
if (stateid != NULL &&
!nfs4_stateid_match_other(stateid, &lo->plh_stateid))
continue;