pNFS: Fix NULL dereference in pnfs_generic_alloc_ds_commits

Signed-off-by: Fred Isaman <fred.isaman@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
index ae600ab1a646..d40755a0984b 100644
--- a/fs/nfs/pnfs_nfs.c
+++ b/fs/nfs/pnfs_nfs.c
@@ -221,7 +221,7 @@ pnfs_generic_alloc_ds_commits(struct nfs_commit_info *cinfo,
                  * If the layout segment is invalid, then let
                  * pnfs_generic_retry_commit() clean up the bucket.
                  */
-                if (!pnfs_is_valid_lseg(bucket->clseg) &&
+                if (bucket->clseg && !pnfs_is_valid_lseg(bucket->clseg) &&
                     !test_bit(NFS_LSEG_LAYOUTRETURN, &bucket->clseg->pls_flags))
                         break;
                 data = nfs_commitdata_alloc(false);