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authorReshetova, Elena <elena.reshetova@intel.com>2017-06-30 13:08:00 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-01 07:39:08 -0700
commit14afee4b6092fde451ee17604e5f5c89da33e71e (patch)
tree19be7a1d72a1b25c5e5366c1213cdda982aacca2 /net/sched
parentnet: convert sk_buff_fclones.fclone_ref from atomic_t to refcount_t (diff)
downloadlinux-dev-14afee4b6092fde451ee17604e5f5c89da33e71e.tar.xz
linux-dev-14afee4b6092fde451ee17604e5f5c89da33e71e.zip
net: convert sock.sk_wmem_alloc 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/sched')
-rw-r--r--net/sched/sch_atm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index de162592eee0..572fe2584e48 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -498,7 +498,7 @@ static void sch_atm_dequeue(unsigned long data)
ATM_SKB(skb)->vcc = flow->vcc;
memcpy(skb_push(skb, flow->hdr_len), flow->hdr,
flow->hdr_len);
- atomic_add(skb->truesize,
+ refcount_add(skb->truesize,
&sk_atm(flow->vcc)->sk_wmem_alloc);
/* atm.atm_options are already set by atm_tc_enqueue */
flow->vcc->send(flow->vcc, skb);