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authorReshetova, Elena <elena.reshetova@intel.com>2017-06-30 13:07:55 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-01 17:39:07 +0300
commit9f23743017d11c103b38d2fa1f64674baeca41cd (patch)
tree272ef703abacf82daa5059b911f2a52159734294 /net/decnet
parent1cc9a98b59ba92fece1277f76aa43e05f34936a6 (diff)
downloadlinux-9f23743017d11c103b38d2fa1f64674baeca41cd.tar.xz
net: convert neighbour.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> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet')
-rw-r--r--net/decnet/dn_neigh.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index eeb5fc561f80..21dedf6fd0f7 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -559,7 +559,7 @@ static inline void dn_neigh_format_entry(struct seq_file *seq,
(dn->flags&DN_NDFLAG_R2) ? "2" : "-",
(dn->flags&DN_NDFLAG_P3) ? "3" : "-",
dn->n.nud_state,
- atomic_read(&dn->n.refcnt),
+ refcount_read(&dn->n.refcnt),
dn->blksize,
(dn->n.dev) ? dn->n.dev->name : "?");
read_unlock(&n->lock);