If a server incorrectly returns RPC_PROG_MISMATCH in the midst
of nfsv4 traffic, the client will hang in various difficult to
debug states. Change a dprintk to a printk to ensure a
relevant log message is sent in this case.
Signed-off-by: Fred Isaman <iisaman@xxxxxxxxxx>
---
net/sunrpc/clnt.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index c5347d2..2d9b77e 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -31,6 +31,7 @@
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/un.h>
+#include <linux/ratelimit.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
@@ -1736,8 +1737,9 @@ rpc_verify_header(struct rpc_task *task)
error = -EPFNOSUPPORT;
goto out_err;
case RPC_PROG_MISMATCH:
- dprintk("RPC: %5u %s: program %u, version %u unsupported by "
- "server %s\n", task->tk_pid, __func__,
+ printk_ratelimited("RPC: %5u %s: program %u, version %u "
+ "unsupported by server %s\n",
+ task->tk_pid, __func__,
(unsigned int)task->tk_client->cl_prog,
(unsigned int)task->tk_client->cl_vers,
task->tk_client->cl_server);
--
1.7.2.1
--
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