netdev - [RESEND 1/2] sctp: export sctp_endpoint_{hold,put}() for use by seperate modules

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Date:   Tue, 14 Dec 2021 21:57:31 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org, Vlad Yasevich <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        lksctp developers <linux-sctp@...r.kernel.org>,
        "H.P. Yarroll" <piggy@....org>,
        Karl Knutson <karl@...ena.chicago.il.us>,
        Jon Grimm <jgrimm@...ibm.com>,
        Xingang Guo <xingang.guo@...el.com>,
        Hui Huang <hui.huang@...ia.com>,
        Sridhar Samudrala <sri@...ibm.com>,
        Daisy Chang <daisyc@...ibm.com>,
        Ryan Layer <rmlayer@...ibm.com>,
        Kevin Gao <kevin.gao@...el.com>, netdev@...r.kernel.org
Subject: [RESEND 1/2] sctp: export sctp_endpoint_{hold,put}() for use by seperate modules

net/sctp/diag.c for instance is built into its own separate module
(sctp_diag.ko) and requires the use of sctp_endpoint_{hold,put}() in
order to prevent a recently found use-after-free issue.

Cc: Vlad Yasevich <vyasevich@...il.com>
Cc: Neil Horman <nhorman@...driver.com>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: lksctp developers <linux-sctp@...r.kernel.org>
Cc: "H.P. Yarroll" <piggy@....org>
Cc: Karl Knutson <karl@...ena.chicago.il.us>
Cc: Jon Grimm <jgrimm@...ibm.com>
Cc: Xingang Guo <xingang.guo@...el.com>
Cc: Hui Huang <hui.huang@...ia.com>
Cc: Sridhar Samudrala <sri@...ibm.com>
Cc: Daisy Chang <daisyc@...ibm.com>
Cc: Ryan Layer <rmlayer@...ibm.com>
Cc: Kevin Gao <kevin.gao@...el.com>
Cc: linux-sctp@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 net/sctp/endpointola.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 48c9c2c7602f7..7c36056f3a1b4 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -226,6 +226,7 @@ void sctp_endpoint_hold(struct sctp_endpoint *ep)
 {
 	refcount_inc(&ep->base.refcnt);
 }
+EXPORT_SYMBOL_GPL(sctp_endpoint_hold);
 
 /* Release a reference to an endpoint and clean up if there are
  * no more references.
@@ -235,6 +236,7 @@ void sctp_endpoint_put(struct sctp_endpoint *ep)
 	if (refcount_dec_and_test(&ep->base.refcnt))
 		sctp_endpoint_destroy(ep);
 }
+EXPORT_SYMBOL_GPL(sctp_endpoint_put);
 
 /* Is this the endpoint we are looking for?  */
 struct sctp_endpoint *sctp_endpoint_is_match(struct sctp_endpoint *ep,
-- 
2.34.1.173.g76aa8bc2d0-goog