xprtrdma: Cancel refresh worker during buffer shutdown

Trying to create MRs while the transport is being torn down can
cause a crash.

Fixes: e2ac236c0b65 ("xprtrdma: Allocate MRs on demand")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 3b332b395045b5b0ad07bc13a30db1420d7f7082..2e4fc1e4694713fecec4394b02b150686804295b 100644 (file)
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1037,6 +1037,7 @@ void
 rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
 {
        cancel_delayed_work_sync(&buf->rb_recovery_worker);
+       cancel_delayed_work_sync(&buf->rb_refresh_worker);
 
        while (!list_empty(&buf->rb_recv_bufs)) {
                struct rpcrdma_rep *rep;