nfsd: fix null dereference on error path

We're forgetting to check the return value from groups_alloc().

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index c903e04..b860d34 100644 (file)
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -49,6 +49,8 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
                new->fsuid = exp->ex_anon_uid;
                new->fsgid = exp->ex_anon_gid;
                gi = groups_alloc(0);
+               if (!gi)
+                       goto oom;
        } else if (flags & NFSEXP_ROOTSQUASH) {
                if (!new->fsuid)
                        new->fsuid = exp->ex_anon_uid;