Commit 52024cd6 authored by Matt Johnston's avatar Matt Johnston Committed by Jakub Kicinski
Browse files

net: mctp: Set SOCK_RCU_FREE 



Bind lookup runs under RCU, so ensure that a socket doesn't go away in
the middle of a lookup.

Fixes: 833ef3b9 ("mctp: Populate socket implementation")
Signed-off-by: default avatarMatt Johnston <matt@codeconstruct.com.au>
Link: https://patch.msgid.link/20250410-mctp-rcu-sock-v1-1-872de9fdc877@codeconstruct.com.au


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f3fdd4fb

net/mctp/af_mctp.c

+3 −0
Original line number Diff line number Diff line
@@ -630,6 +630,9 @@ static int mctp_sk_hash(struct sock *sk) 
{

	struct net *net = sock_net(sk);



	/* Bind lookup runs under RCU, remain live during that. */

	sock_set_flag(sk, SOCK_RCU_FREE);



	mutex_lock(&net->mctp.bind_lock);

	sk_add_node_rcu(sk, &net->mctp.binds);

	mutex_unlock(&net->mctp.bind_lock);