From d4adee09fd1cf65189cb8901eb7506aea3e869ac Mon Sep 17 00:00:00 2001 From: Sudip Mukherjee Date: Sat, 3 Oct 2015 13:39:41 +0530 Subject: NTB: fix access of free-ed pointer We were accessing nt->mw_vec after freeing it. Fix the error path so that we free nt->mw_vec after we have finished using it. Signed-off-by: Sudip Mukherjee Signed-off-by: Jon Mason --- drivers/ntb/ntb_transport.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers/ntb') diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 3903dfc39975..d09d92e05cbe 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -1080,7 +1080,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) GFP_KERNEL, node); if (!nt->qp_vec) { rc = -ENOMEM; - goto err2; + goto err1; } if (nt_debugfs_dir) { @@ -1092,7 +1092,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) for (i = 0; i < qp_count; i++) { rc = ntb_transport_init_queue(nt, i); if (rc) - goto err3; + goto err2; } INIT_DELAYED_WORK(&nt->link_work, ntb_transport_link_work); @@ -1100,12 +1100,12 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) rc = ntb_set_ctx(ndev, nt, &ntb_transport_ops); if (rc) - goto err3; + goto err2; INIT_LIST_HEAD(&nt->client_devs); rc = ntb_bus_init(nt); if (rc) - goto err4; + goto err3; nt->link_is_up = false; ntb_link_enable(ndev, NTB_SPEED_AUTO, NTB_WIDTH_AUTO); @@ -1113,17 +1113,16 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) return 0; -err4: - ntb_clear_ctx(ndev); err3: - kfree(nt->qp_vec); + ntb_clear_ctx(ndev); err2: - kfree(nt->mw_vec); + kfree(nt->qp_vec); err1: while (i--) { mw = &nt->mw_vec[i]; iounmap(mw->vbase); } + kfree(nt->mw_vec); err: kfree(nt); return rc; -- cgit v1.2.3-59-g8ed1b