Commit 51314960 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

SUNRPC: Fix the minimal size for reply buffer allocation 



We must at minimum allocate enough memory to be able to see any auth
errors in the reply from the server.

Fixes: 2c94b8ec ("SUNRPC: Use au_rslack when computing reply...")
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 9734ad57

net/sunrpc/clnt.c

+6 −1
Original line number Diff line number Diff line
@@ -1730,7 +1730,12 @@ call_allocate(struct rpc_task *task) 
	req->rq_callsize = RPC_CALLHDRSIZE + (auth->au_cslack << 1) +

			   proc->p_arglen;

	req->rq_callsize <<= 2;

	req->rq_rcvsize = RPC_REPHDRSIZE + auth->au_rslack + proc->p_replen;

	/*

	 * Note: the reply buffer must at minimum allocate enough space

	 * for the 'struct accepted_reply' from RFC5531.

	 */

	req->rq_rcvsize = RPC_REPHDRSIZE + auth->au_rslack + \

			max_t(size_t, proc->p_replen, 2);

	req->rq_rcvsize <<= 2;



	status = xprt->ops->buf_alloc(task);