Subject: Re: [PATCH 4.4 106/124] netlink: Do not subscribe to non-existent groups

From: Dmitry Safonov <[email-masked]>
Date: Sun, 05 Aug 2018 00:12:02 +0100

On Sat, 2018-08-04 at 15:49 -0700, Nathan Chancellor wrote:
> dmesg output attached, please let me know if you need anything else.

Could you try with this diff instead?
It looks like, I'm too bad with shifts and shifted for 64 bytes.

-- 
Thanks,
             Dmitry

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 7d860a22e5fb..b78bb7dc06fe 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1011,7 +1011,7 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
 
 	if (nlk->ngroups == 0)
 		groups = 0;
-	else
+	else if (nlk->ngroups < 64)
 		groups &= (1ULL << nlk->ngroups) - 1;
 
 	bound = nlk->bound;