From 14afee4b6092fde451ee17604e5f5c89da33e71e Mon Sep 17 00:00:00 2001 From: "Reshetova, Elena" Date: Fri, 30 Jun 2017 13:08:00 +0300 Subject: 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 Signed-off-by: Hans Liljestrand Signed-off-by: Kees Cook Signed-off-by: David Windsor Signed-off-by: David S. Miller --- net/sctp/proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/sctp/proc.c') diff --git a/net/sctp/proc.c b/net/sctp/proc.c index 8e34db56bc1d..26b4be6b4172 100644 --- a/net/sctp/proc.c +++ b/net/sctp/proc.c @@ -363,7 +363,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) assoc->stream.outcnt, assoc->max_retrans, assoc->init_retries, assoc->shutdown_retries, assoc->rtx_data_chunks, - atomic_read(&sk->sk_wmem_alloc), + refcount_read(&sk->sk_wmem_alloc), sk->sk_wmem_queued, sk->sk_sndbuf, sk->sk_rcvbuf); -- cgit v1.2.3