This is a note to let you know that I've just added the patch titled xprtrdma: Cancel refresh worker during buffer shutdown to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: xprtrdma-cancel-refresh-worker-during-buffer-shutdown.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Mar 22 14:40:23 CET 2018 From: Chuck Lever <chuck.lever@xxxxxxxxxx> Date: Tue, 11 Apr 2017 13:22:29 -0400 Subject: xprtrdma: Cancel refresh worker during buffer shutdown From: Chuck Lever <chuck.lever@xxxxxxxxxx> [ Upstream commit 9378b274e1eb6925db315e345f48850d2d5d9789 ] 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@xxxxxxxxxx> Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/sunrpc/xprtrdma/verbs.c | 1 + 1 file changed, 1 insertion(+) --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1054,6 +1054,7 @@ 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; Patches currently in stable-queue which might be from chuck.lever@xxxxxxxxxx are queue-4.9/xprtrdma-cancel-refresh-worker-during-buffer-shutdown.patch