6.5-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter dan.carpenter@linaro.org
[ Upstream commit 4f3ed837186fc0d2722ba8d2457a594322e9c2ef ]
This IS_ERR() check was deleted during in a cleanup because, at the time, the rpcb_call_async() function could not return an error pointer. That changed in commit 25cf32ad5dba ("SUNRPC: Handle allocation failure in rpc_new_task()") and now it can return an error pointer. Put the check back.
A related revert was done in commit 13bd90141804 ("Revert "SUNRPC: Remove unreachable error condition"").
Fixes: 037e910b52b0 ("SUNRPC: Remove unreachable error condition in rpcb_getport_async()") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/sunrpc/rpcb_clnt.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index 5988a5c5ff3f0..102c3818bc54d 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -769,6 +769,10 @@ void rpcb_getport_async(struct rpc_task *task)
child = rpcb_call_async(rpcb_clnt, map, proc); rpc_release_client(rpcb_clnt); + if (IS_ERR(child)) { + /* rpcb_map_release() has freed the arguments */ + return; + }
xprt->stat.bind_count++; rpc_put_task(child);