Merge tag 'asoc-v5.13' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.13

A lot of changes here for quite a quiet release in subsystem terms -
there's been a lot of fixes and cleanups all over the subsystem both
from generic work and from people working on specific drivers.

 - More cleanup and consolidation work in the core and the generic card
   drivers from Morimoto-san.
 - Lots of cppcheck fixes for Pierre-Louis Brossart.
 - New drivers for Freescale i.MX DMA over rpmsg, Mediatek MT6358
   accessory detection, and Realtek RT1019, RT1316, RT711 and RT715.

1 files changed, 13 insertions, 3 deletions

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index f55095d3ed16..60465f077497 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -1378,9 +1378,19 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
 		if (!table)
 			goto err_alloc;
 
-		/* Update the variables to point into the current struct net */
-		for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++)
-			table[i].data += (void *)net - (void *)&init_net;
+		for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) {
+			if (table[i].data) {
+				/* Update the variables to point into
+				 * the current struct net
+				 */
+				table[i].data += (void *)net - (void *)&init_net;
+			} else {
+				/* Entries without data pointer are global;
+				 * Make them read-only in non-init_net ns
+				 */
+				table[i].mode &= ~0222;
+			}
+		}
 	}
 
 	net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);