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net: mctp: purge receive queues on sk destruction

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commit 60bd1d9008 upstream.

We may have pending skbs in the receive queue when the sk is being
destroyed; add a destructor to purge the queue.

MCTP doesn't use the error queue, so only the receive_queue is purged.

Fixes: 833ef3b91d ("mctp: Populate socket implementation")
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230126064551.464468-1-jk@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeremy Kerr 2023-01-26 14:45:51 +08:00 • committed by Justin Hammond
parent 7e6582fec2
commit 7eebabc5ca
1 changed files with 6 additions and 0 deletions
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6
net/mctp/af_mctp.c
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@ -294,6 +294,11 @@ static void mctp_sk_unhash(struct sock *sk)
synchronize_rcu();
}
static void mctp_sk_destruct(struct sock *sk)
{
skb_queue_purge(&sk->sk_receive_queue);
}
static struct proto mctp_proto = {
.name = "MCTP",
.owner = THIS_MODULE,
@ -330,6 +335,7 @@ static int mctp_pf_create(struct net *net, struct socket *sock,
return -ENOMEM;
sock_init_data(sock, sk);
sk->sk_destruct = mctp_sk_destruct;
rc = 0;
if (sk->sk_prot->init)