[ipfire-2.x.git] / src / patches / linux-3.14.77-gsrec_tcp_input_access_once_rw.patch

diff -Naur linux-3.14.77.org/net/ipv4/tcp_input.c linux-3.14.77/net/ipv4/tcp_input.c
--- linux-3.14.77.org/net/ipv4/tcp_input.c	2016-08-21 19:58:45.000000000 +0200
+++ linux-3.14.77/net/ipv4/tcp_input.c	2016-08-21 21:11:24.336757369 +0200
@@ -3299,12 +3299,12 @@
 		u32 half = (sysctl_tcp_challenge_ack_limit + 1) >> 1;
 
 		challenge_timestamp = now;
-		ACCESS_ONCE(challenge_count) = half +
+		ACCESS_ONCE_RW(challenge_count) = half +
 				  prandom_u32_max(sysctl_tcp_challenge_ack_limit);
 	}
 	count = ACCESS_ONCE(challenge_count);
 	if (count > 0) {
-		ACCESS_ONCE(challenge_count) = count - 1;
+		ACCESS_ONCE_RW(challenge_count) = count - 1;
 		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
 		tcp_send_ack(sk);
 	}
Commit	Line	Data
69f3684c AF	1	diff -Naur linux-3.14.77.org/net/ipv4/tcp_input.c linux-3.14.77/net/ipv4/tcp_input.c
	2	--- linux-3.14.77.org/net/ipv4/tcp_input.c 2016-08-21 19:58:45.000000000 +0200
	3	+++ linux-3.14.77/net/ipv4/tcp_input.c 2016-08-21 21:11:24.336757369 +0200
	4	@@ -3299,12 +3299,12 @@
	5	u32 half = (sysctl_tcp_challenge_ack_limit + 1) >> 1;
	6
	7	challenge_timestamp = now;
	8	- ACCESS_ONCE(challenge_count) = half +
	9	+ ACCESS_ONCE_RW(challenge_count) = half +
	10	prandom_u32_max(sysctl_tcp_challenge_ack_limit);
	11	}
	12	count = ACCESS_ONCE(challenge_count);
	13	if (count > 0) {
	14	- ACCESS_ONCE(challenge_count) = count - 1;
	15	+ ACCESS_ONCE_RW(challenge_count) = count - 1;
	16	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
	17	tcp_send_ack(sk);
	18	}