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[IB] uverbs: Close some exploitable races

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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>
This commit is contained in:
Roland Dreier
2005-09-26 13:01:03 -07:00
parent 44dd823b00
commit 63c47c286d
4 changed files with 86 additions and 63 deletions
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include/rdma/ib_verbs.h
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@@ -665,7 +665,6 @@ struct ib_ucontext {
struct list_head qp_list;
struct list_head srq_list;
struct list_head ah_list;
spinlock_t lock;
};
struct ib_uobject {