tree 7be7c3402e456ed857c5041cd5ee6a699f772701
parent 44dd823b00fa64bf01e53557d28555011f122a88
author Roland Dreier <rolandd@cisco.com> 1127764863 -0700
committer Roland Dreier <rolandd@cisco.com> 1127764863 -0700

[IB] uverbs: Close some exploitable races

Al Viro pointed out that the current IB userspace verbs interface
allows userspace to cause mischief by closing file descriptors before
we're ready, or issuing the same command twice at the same time.  This
patch closes those races, and fixes other obvious problems such as a
module reference leak.

Some other interface bogosities will require an ABI change to fix
properly, so I'm deferring those fixes until 2.6.15.

Signed-off-by: Roland Dreier <rolandd@cisco.com>