From ddce40df6e14dd474bbd9daa006dcc290dea6326 Mon Sep 17 00:00:00 2001
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Wed, 9 May 2007 08:30:11 +0200
Subject: sunrpc: fix crash in rpc_malloc()

While the comment says:
 * To prevent rpciod from hanging, this allocator never sleeps,
 * returning NULL if the request cannot be serviced immediately.

The function does not actually check for NULL pointers being returned.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index b28a0b0..b011eb6 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -767,6 +767,10 @@ void *rpc_malloc(struct rpc_task *task, size_t size)
 		buf = mempool_alloc(rpc_buffer_mempool, gfp);
 	else
 		buf = kmalloc(size, gfp);
+
+	if (!buf)
+		return NULL;
+
 	buf->len = size;
 	dprintk("RPC: %5u allocated buffer of size %zu at %p\n",
 			task->tk_pid, size, buf);
-- 
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