From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 11 Apr 2017 17:22:29 +0000 (-0400)
Subject: xprtrdma: Cancel refresh worker during buffer shutdown
X-Git-Tag: v4.12-rc1~32^2~22^2~12
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9378b274e1eb6925db315e345f48850d2d5d9789;p=karo-tx-linux.git

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 3b332b395045..2e4fc1e46947 100644
--- 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;