In case of error when writing to userspace, function
ehca_create_cq() do not set an error code before
following its error path.
This patch set error code to -EFAULT when ib_copy_to_udata()
fail.
This was caught when using spatch (aka. coccinelle)
to rewrite call to ib_copy_{from,to}_udata().
Link:
https://www.gitorious.org/opteya/coccib/source/75ebf2c1033c64c1d81df13e4ae44ee99c989eba:ib_copy_udata.cocci
Link: http://marc.info/[email protected]
Cc: Hoang-Nam Nguyen <[email protected]>
Cc: Christoph Raisch <[email protected]>
Cc: Julia Lawall <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Yann Droneaud <[email protected]>
---
drivers/infiniband/hw/ehca/ehca_cq.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c
b/drivers/infiniband/hw/ehca/ehca_cq.c
index 212150c25ea0..8cc837537768 100644
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -283,6 +283,7 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int
cqe, int comp_vector,
(my_cq->galpas.user.fw_handle & (PAGE_SIZE - 1));
if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
ehca_err(device, "Copy to udata failed.");
+ cq = ERR_PTR(-EFAULT);
goto create_cq_exit4;
}
}
--
1.8.5.3
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
