| commit | eabc77935d8d2a761c88b9cbb6313bd54b6ddbb3 | [log] [tgz] |
|---|---|---|
| author | Roland Dreier <rolandd@cisco.com> | Fri Nov 18 14:18:26 2005 -0800 |
| committer | Roland Dreier <rolandd@cisco.com> | Fri Nov 18 14:18:26 2005 -0800 |
| tree | cde3d8c648c09264669ca207df597d9e96c849bb | |
| parent | 48fd0d1fdd357caa2de8cb4ce6af810df7535f43 [diff] |
IB/umad: make sure write()s have sufficient data Make sure that userspace passes in enough data when sending a MAD. We always copy at least sizeof (struct ib_user_mad) + IB_MGMT_RMPP_HDR bytes from userspace, so anything less is definitely invalid. Also, if the length is less than this limit, it's possible for the second copy_from_user() to get a negative length and trigger a BUG(). Signed-off-by: Roland Dreier <rolandd@cisco.com>