diff options
| author | Yann Droneaud <ydroneaud@opteya.com> | 2014-03-10 23:06:25 +0100 |
|---|---|---|
| committer | Show Liu <show.liu@linaro.org> | 2014-06-18 11:40:33 +0800 |
| commit | 6fba7f2cd3957fa581d7c6c832ed755c99aafc68 (patch) | |
| tree | c3289d34526ae78558310f87b5afbd1788e36a09 /drivers/infiniband | |
| parent | 9860471a865969d159833e82cbb1e1e0889da31d (diff) | |
IB/ehca: Returns an error on ib_copy_to_udata() failure
commit 5bdb0f02add5994b0bc17494f4726925ca5d6ba1 upstream.
In case of error when writing to userspace, function ehca_create_cq()
does not set an error code before following its error path.
This patch sets the error code to -EFAULT when ib_copy_to_udata()
fails.
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/?i=cover.1394485254.git.ydroneaud@opteya.com
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_cq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c index 212150c25ea..8cc83753776 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; } } |