From 18c1d28f359cd6c7b26ef9856a61427d63bedfcc Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 9 Oct 2018 15:54:15 -0400 Subject: [PATCH] nfsd: Fix an Oops in free_session() commit bb6ad5572c0022e17e846b382d7413cdcf8055be upstream. In call_xpt_users(), we delete the entry from the list, but we do not reinitialise it. This triggers the list poisoning when we later call unregister_xpt_user() in nfsd4_del_conns(). Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields Signed-off-by: Greg Kroah-Hartman --- net/sunrpc/svc_xprt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 5185efb..83ccd02 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -989,7 +989,7 @@ static void call_xpt_users(struct svc_xprt *xprt) spin_lock(&xprt->xpt_lock); while (!list_empty(&xprt->xpt_users)) { u = list_first_entry(&xprt->xpt_users, struct svc_xpt_user, list); - list_del(&u->list); + list_del_init(&u->list); u->callback(u); } spin_unlock(&xprt->xpt_lock); -- 2.7.4