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 @@
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);