From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 10 Mar 2023 12:07:23 +0000 (+0100)
Subject: 4.19-stable patches
X-Git-Tag: v6.1.17~24
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5ac9fb6e61db3c1a929bd8795402484542202e32;p=thirdparty%2Fkernel%2Fstable-queue.git

4.19-stable patches

added patches:
	tcp-fix-listen-regression-in-5.15.88.patch
---

diff --git a/queue-4.19/series b/queue-4.19/series
index fc27afa2f1e..f0a3f72e609 100644
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -246,3 +246,4 @@ bluetooth-hci_sock-purge-socket-queues-in-the-destruct-callback.patch
 s390-maccess-add-no-dat-mode-to-kernel_write.patch
 s390-setup-init-jump-labels-before-command-line-parsing.patch
 media-uvcvideo-fix-race-condition-with-usb_kill_urb.patch
+tcp-fix-listen-regression-in-5.15.88.patch
diff --git a/queue-4.19/tcp-fix-listen-regression-in-5.15.88.patch b/queue-4.19/tcp-fix-listen-regression-in-5.15.88.patch
new file mode 100644
index 00000000000..cf7ccdfe39f
--- /dev/null
+++ b/queue-4.19/tcp-fix-listen-regression-in-5.15.88.patch
@@ -0,0 +1,38 @@
+From fdaf88531cfd17b2a710cceb3141ef6f9085ff40 Mon Sep 17 00:00:00 2001
+From: Kuniyuki Iwashima <kuniyu@amazon.com>
+Date: Mon, 13 Feb 2023 20:45:48 +0000
+Subject: tcp: Fix listen() regression in 4.19.270
+
+From: Kuniyuki Iwashima <kuniyu@amazon.com>
+
+commit fdaf88531cfd17b2a710cceb3141ef6f9085ff40 upstream.
+
+When we backport dadd0dcaa67d ("net/ulp: prevent ULP without clone op from
+entering the LISTEN status"), we have accidentally backported a part of
+7a7160edf1bf ("net: Return errno in sk->sk_prot->get_port().") and removed
+err = -EADDRINUSE in inet_csk_listen_start().
+
+Thus, listen() no longer returns -EADDRINUSE even if ->get_port() failed
+as reported in [0].
+
+We set -EADDRINUSE to err just before ->get_port() to fix the regression.
+
+[0]: https://lore.kernel.org/stable/EF8A45D0-768A-4CD5-9A8A-0FA6E610ABF7@winter.cafe/
+
+Reported-by: Winter <winter@winter.cafe>
+Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/ipv4/inet_connection_sock.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/net/ipv4/inet_connection_sock.c
++++ b/net/ipv4/inet_connection_sock.c
+@@ -934,6 +934,7 @@ int inet_csk_listen_start(struct sock *s
+ 	 * It is OK, because this socket enters to hash table only
+ 	 * after validation is complete.
+ 	 */
++	err = -EADDRINUSE;
+ 	inet_sk_state_store(sk, TCP_LISTEN);
+ 	if (!sk->sk_prot->get_port(sk, inet->inet_num)) {
+ 		inet->inet_sport = htons(inet->inet_num);