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net, rds: convert rds_ib_device.refcount from atomic_t to refcount_t

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refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Reshetova, Elena
2017-07-04 15:53:15 +03:00
committed by David S. Miller
parent 7ff139696d
commit 50d61ff789
3 changed files with 9 additions and 9 deletions
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net/rds/ib.h
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@@ -230,7 +230,7 @@ struct rds_ib_device {
unsigned int max_initiator_depth;
unsigned int max_responder_resources;
spinlock_t spinlock; /* protect the above */
atomic_t refcount;
refcount_t refcount;
struct work_struct free_work;
int *vector_load;
};