diff options
| author |   Reshetova, Elena <elena.reshetova@intel.com> | 2017-03-21 13:59:19 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-03-22 12:06:08 -0700 |
| commit | 4c355cdfbba537971b5c3849680b1b6453a7a383 (patch) | |
| tree | 0992566cf726ff06986c271a2f7aff0c911d9441 /include/linux/filter.h | |
| parent | net: greth: Utilize of_get_mac_address() (diff) | |
| download | linux-dev-4c355cdfbba537971b5c3849680b1b6453a7a383.tar.xz linux-dev-4c355cdfbba537971b5c3849680b1b6453a7a383.zip | |
net: convert sk_filter.refcnt from atomic_t to refcount_t
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>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index dffa072b7b79..511fe910bf1d 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -7,6 +7,7 @@ #include <stdarg.h> #include <linux/atomic.h> +#include <linux/refcount.h> #include <linux/compat.h> #include <linux/skbuff.h> #include <linux/linkage.h> @@ -430,7 +431,7 @@ struct bpf_prog { }; struct sk_filter { - atomic_t refcnt; + refcount_t refcnt; struct rcu_head rcu; struct bpf_prog *prog; }; |