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OpenCloudOS-Kernel
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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 <sudip@vectorindia.org>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Sudip Mukherjee 2015-10-03 13:39:41 +05:30 committed by Jon Mason
parent 04afde45e0
commit d4adee09fd
1 changed files with 7 additions and 8 deletions
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15
drivers/ntb/ntb_transport.c
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@ -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;