From: Trond Myklebust trond.myklebust@hammerspace.com
[ Upstream commit d911c57a19551c6bef116a3b55c6b089901aacb0 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/callback_proc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index cd4c6bc81caed..40d31024b72d1 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -128,6 +128,8 @@ static struct inode *nfs_layout_find_inode_by_stateid(struct nfs_client *clp,
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;