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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 15:53:00 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-04 22:35:15 +0100 |
| commit | e0542dd5185e68247b08c3418bdba14644b4c414 (patch) | |
| tree | 1e887d070c0b3a07bff7a829bc7e78a929a49574 /net/decnet | |
| parent | 66af846fe54b780f8f5bd9a62aee081bd2ace582 (diff) | |
| download | linux-stable-e0542dd5185e68247b08c3418bdba14644b4c414.tar.gz linux-stable-e0542dd5185e68247b08c3418bdba14644b4c414.tar.bz2 linux-stable-e0542dd5185e68247b08c3418bdba14644b4c414.zip | |
net, decnet: convert dn_fib_info.fib_clntref 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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet')
| -rw-r--r-- | net/decnet/dn_fib.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c index f9058ebeb635..f9f6fb3f3c5b 100644 --- a/net/decnet/dn_fib.c +++ b/net/decnet/dn_fib.c @@ -389,7 +389,7 @@ link_it: } fi->fib_treeref++; - atomic_inc(&fi->fib_clntref); + refcount_set(&fi->fib_clntref, 1); spin_lock(&dn_fib_info_lock); fi->fib_next = dn_fib_info_list; fi->fib_prev = NULL; @@ -425,7 +425,7 @@ int dn_fib_semantic_match(int type, struct dn_fib_info *fi, const struct flowidn switch (type) { case RTN_NAT: DN_FIB_RES_RESET(*res); - atomic_inc(&fi->fib_clntref); + refcount_inc(&fi->fib_clntref); return 0; case RTN_UNICAST: case RTN_LOCAL: @@ -438,7 +438,7 @@ int dn_fib_semantic_match(int type, struct dn_fib_info *fi, const struct flowidn } if (nhsel < fi->fib_nhs) { res->nh_sel = nhsel; - atomic_inc(&fi->fib_clntref); + refcount_inc(&fi->fib_clntref); return 0; } endfor_nexthops(fi); |