5.15-stable review patch. If anyone has any objections, please let me know.
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From: Florian Westphal fw@strlen.de
[ Upstream commit 6b9ea5c81ea2bed80dc98a38d475124a87e7ab5d ]
Raw access to cb->arg[] is deprecated, use a context structure.
Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Mat Martineau mathew.j.martineau@linux.intel.com Signed-off-by: David S. Miller davem@davemloft.net Stable-dep-of: 871019b22d1b ("net: set SOCK_RCU_FREE before inserting socket into hashtable") Signed-off-by: Sasha Levin sashal@kernel.org --- net/mptcp/mptcp_diag.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/net/mptcp/mptcp_diag.c b/net/mptcp/mptcp_diag.c index 292374fb07792..fb98b438b2c90 100644 --- a/net/mptcp/mptcp_diag.c +++ b/net/mptcp/mptcp_diag.c @@ -66,20 +66,28 @@ static int mptcp_diag_dump_one(struct netlink_callback *cb, return err; }
+struct mptcp_diag_ctx { + long s_slot; + long s_num; +}; + static void mptcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, const struct inet_diag_req_v2 *r) { bool net_admin = netlink_net_capable(cb->skb, CAP_NET_ADMIN); + struct mptcp_diag_ctx *diag_ctx = (void *)cb->ctx; struct net *net = sock_net(skb->sk); struct inet_diag_dump_data *cb_data; struct mptcp_sock *msk; struct nlattr *bc;
+ BUILD_BUG_ON(sizeof(cb->ctx) < sizeof(*diag_ctx)); + cb_data = cb->data; bc = cb_data->inet_diag_nla_bc;
- while ((msk = mptcp_token_iter_next(net, &cb->args[0], &cb->args[1])) != - NULL) { + while ((msk = mptcp_token_iter_next(net, &diag_ctx->s_slot, + &diag_ctx->s_num)) != NULL) { struct inet_sock *inet = (struct inet_sock *)msk; struct sock *sk = (struct sock *)msk; int ret = 0; @@ -101,7 +109,7 @@ static void mptcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, sock_put(sk); if (ret < 0) { /* will retry on the same position */ - cb->args[1]--; + diag_ctx->s_num--; break; } cond_resched();