4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yonatan Cohen <yonat...@mellanox.com>
commit 2d4b21e0a2913612274a69a3ba1bfee4cffc6e77 upstream.
On UD QP completer tasklet is scheduled for each packet sent.
If it is followed by a destroy_qp(), the kernel panic will
happen as the completer tries to operate on a destroyed QP.
Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonat...@mellanox.com>
Reviewed-by: Moni Shoua <mo...@mellanox.com>
Signed-off-by: Leon Romanovsky <l...@kernel.org>
Signed-off-by: Doug Ledford <dledf...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/infiniband/sw/rxe/rxe_qp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/infiniband/sw/rxe/rxe_qp.c
+++ b/drivers/infiniband/sw/rxe/rxe_qp.c
@@ -813,8 +813,7 @@ void rxe_qp_destroy(struct rxe_qp *qp)
del_timer_sync(&qp->rnr_nak_timer);
rxe_cleanup_task(&qp->req.task);
- if (qp_type(qp) == IB_QPT_RC)
- rxe_cleanup_task(&qp->comp.task);
+ rxe_cleanup_task(&qp->comp.task);
/* flush out any receive wr's or pending requests */
__rxe_do_task(&qp->req.task);
