From nobody Sat Feb 7 06:20:40 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AFBDC211A14 for ; Thu, 6 Mar 2025 16:10:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741277437; cv=none; b=eG6FFADt74dzoj62Djug7dnoVmzi3aZsl6y2Bftv8YLtz1Sfsj3pDeRsWq+Edn+FkCjU/O3Eb+TMB1NrU74hUDHbi/nJe64T4Kk41r8Yvs/HVxvebT6LgYts9vNYvYSz7shTA4LZol98V6SDR7XZ7bSti3A7sw1OvOIankZPvQw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741277437; c=relaxed/simple; bh=Pt96Uovd1mpbJtnbuJAU2P1Aa68DKtd8BuptUSAoifY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=QCoHQmGy0zFAe2U50W1wzySibhwuHlWIJ8gvONPoBKHYeaOHiZaHYFyinvkktNegnJHLo9oMOjPaQOG009YSCiQ5zzh65KL5gz3uRrFn0U8A0ArUwMWSssi3Wmz7GCWs7FSl1yl961fc1ZpoTLk45aht/bgZY41OCQJ+s+7W+ng= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=C+TqtizB; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="C+TqtizB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741277434; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TFLrlOS+5ld0nvFR1DksJ9cDKB3+2CeK8laqLKQbEAA=; b=C+TqtizB6yY3DnXD/6TlAD8uz4eG1/X1/ZF7z9st59ASkuEgavxYvmc5Zn7mDLArJF0cLy EaUpTic/DHQLCrJ3Qz193G26y3dU6sbQHsNsBKINBQzAFohjXsnUMVBKg+t/o3mhOuglHm JESP75B1lZEhvMxCGSTQAa1AT0zBMzY= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-662-SN9CoHOCOgye9MyNMRA4Bg-1; Thu, 06 Mar 2025 11:10:32 -0500 X-MC-Unique: SN9CoHOCOgye9MyNMRA4Bg-1 X-Mimecast-MFC-AGG-ID: SN9CoHOCOgye9MyNMRA4Bg_1741277431 Received: by mail-wm1-f70.google.com with SMTP id 5b1f17b1804b1-4388eee7073so10793485e9.0 for ; Thu, 06 Mar 2025 08:10:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741277431; x=1741882231; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=TFLrlOS+5ld0nvFR1DksJ9cDKB3+2CeK8laqLKQbEAA=; b=HSVXbMlYpb4OhJ3FkzHpnnP0hbCTG1ELVmAGq7aQH2QwhlR0LE8Cc2ACHc0ts7lMaV YWm051wk8sa/zzYKCMmZ6yFab/T3qTrJixkDcu5se8sXILcWXPLmyKPuYf0NhJlBHNBS qUwRXALmhz93WEctedf+76eGrw7nW8NKgz89ACQDp3d5gm2T8GVBWxeiao4fxqjgyJmd WCd2TubJf93QYG1FqJsBDuST5cBWm2DKq3MBFl+iBVrB7/sZByrNWWrUmVTTcHur8iZz GAWK+Xby+enfJpxQmGU+U2KEslOuf4Yk4a+Ikg398ZIRKVxVdZhfs8K5iGFxHRAYDDRZ gfdw== X-Forwarded-Encrypted: i=1; AJvYcCVHJt3hkZtbQuMZtrPG0+xj+TnSrS6980K2D/Ch1FkkblTRfld2jKzwbDxcTE2nADNWoM2skHSO7MqdBjM=@vger.kernel.org X-Gm-Message-State: AOJu0YyDo7id07Olt5gowxftVUuFr0LF76qyOeEhkb+lkl8YagmOfEa1 WSfEYLZskyIKVxet0qP75OPbZDZU0GCAYbxpC4TnTBqbNU4/EpSmAcj33JluAk8TnrL9fxEFkgI 8zM1jFrBzjFgBaCrkfTTL/8ATmeAlaljqnbvLydsQ/o2KTL2gf946H+FRsorAMbkofDBH8xjwRx 4z7SZFk8W7I81UBvxj2cLX96zABO6St/3AXUu4Trha0EWaZw== X-Gm-Gg: ASbGncu7ZO2O4OoQJLcW5naj6Qb/3nLJJ1xObwBKHaUUe/gqPY6p7z443Mv9aeMYgfy b2AcUEZaAI+YrtO9zQPqKcdA9AHIQ1GcHRArnkreX6jxyTtcA7TcZX4ZoX45HDve3jVlsBw6rf+ YfFlwR6+uxSEgw1MDUCKwKBfonJ5djqhNdnJ5vCywROkFs5cnllucx7NAoxPyREIXWnJWEzv0BQ J9d3qxXNX/smXI4szM4Fr4qFw8tIcnjqn3MPlJMe/pBFK4ebwvMGANheQ3w6QLCDg3xAaF3q3lu /CzzHjiYDVgJhRChBn+ODk6BZP/yRtg7EoLKuLD3SN1q X-Received: by 2002:a05:6000:1842:b0:38d:b52d:e11c with SMTP id ffacd0b85a97d-391320a39c5mr75424f8f.15.1741277431154; Thu, 06 Mar 2025 08:10:31 -0800 (PST) X-Google-Smtp-Source: AGHT+IHdg1mu+YRP1IQFJUy+MGaPyfw9bRzO4/4jxtF7UGS83/MvazwuQz4R3F7VzC0vThUykW3fnQ== X-Received: by 2002:a05:6000:1842:b0:38d:b52d:e11c with SMTP id ffacd0b85a97d-391320a39c5mr75368f8f.15.1741277430721; Thu, 06 Mar 2025 08:10:30 -0800 (PST) Received: from lleonard-thinkpadp16vgen1.rmtit.csb ([151.29.33.62]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3912c01cd31sm2477950f8f.52.2025.03.06.08.10.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Mar 2025 08:10:30 -0800 (PST) From: Luigi Leonardi Date: Thu, 06 Mar 2025 17:09:32 +0100 Subject: [PATCH net-next 1/2] vsock/test: Add new function to check for timeout Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250306-test_vsock-v1-1-0320b5accf92@redhat.com> References: <20250306-test_vsock-v1-0-0320b5accf92@redhat.com> In-Reply-To: <20250306-test_vsock-v1-0-0320b5accf92@redhat.com> To: Stefano Garzarella , Michal Luczaj Cc: virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Luigi Leonardi X-Mailer: b4 0.14.2 Add `timeout_check_expired` function that returns true if the timeout counter has expired. This is useful in situations where a timeout does not necessarily mean a failure. Signed-off-by: Luigi Leonardi --- tools/testing/vsock/timeout.c | 7 ++++++- tools/testing/vsock/timeout.h | 3 +++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/testing/vsock/timeout.c b/tools/testing/vsock/timeout.c index 44aee49b6cee07deb9443e3c2595ef680b726053..d6c69b14a0385befa6204a311c0= a7f0c148ab021 100644 --- a/tools/testing/vsock/timeout.c +++ b/tools/testing/vsock/timeout.c @@ -18,7 +18,6 @@ */ =20 #include -#include #include #include #include "timeout.h" @@ -43,6 +42,12 @@ void timeout_begin(unsigned int seconds) alarm(seconds); } =20 +/* Check if timer has expired */ +bool timeout_check_expired(void) +{ + return timeout; +} + /* Exit with an error message if the timeout has expired */ void timeout_check(const char *operation) { diff --git a/tools/testing/vsock/timeout.h b/tools/testing/vsock/timeout.h index ecb7c840e65ae5d40419bf5f9ca57fdf4051aa41..cbb183e3a73784b82b2139fbf7a= 00fd62521ad77 100644 --- a/tools/testing/vsock/timeout.h +++ b/tools/testing/vsock/timeout.h @@ -2,6 +2,8 @@ #ifndef TIMEOUT_H #define TIMEOUT_H =20 +#include + enum { /* Default timeout */ TIMEOUT =3D 10 /* seconds */ @@ -10,6 +12,7 @@ enum { void sigalrm(int signo); void timeout_begin(unsigned int seconds); void timeout_check(const char *operation); +bool timeout_check_expired(void); void timeout_end(void); =20 #endif /* TIMEOUT_H */ --=20 2.48.1 From nobody Sat Feb 7 06:20:40 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04AA4211A29 for ; Thu, 6 Mar 2025 16:10:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741277437; cv=none; b=HjxZfNGwp/1E1Yie6skoEKw/OdSpgNdBSosNUqpaHEba+TxmZLPgt/R4CZn9wgps3f1WHZVLR4QMWXqFwdQWmp7MbSywBkzQtCDfQNkSTx41m5CrFF/eSobqhk2Ugw1Bz/mbk6RzEn3ogaW4T5VhfIYjyIbV0XaFyPWvq7qiTJI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741277437; c=relaxed/simple; bh=dH/liky2S790rXQUDoT6Q59xxP9nXr32e65ycj/6+SE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Fp9pefUAnXatJLs/jJLcx32wS3k8lR3mUYQ/Y+xDI6IeIvN9SfUWM/VHYxwyhiNyYLictF50qKqzEefxgJ8ag8AKnCk6l08khEZeisDAgmWzda/GrOv2PEXvk+nhCb7QcgjPyVykQ8kE8NdJRrLcPTWHDbqnW/+oifJ+ldjhBdE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=VR/9pTWb; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VR/9pTWb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741277434; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/wmiDwuO87WXvvjC7I5fkwx86eSsk3osWKrPxbBFPG0=; b=VR/9pTWbis9m8iTxoOw0WA5Y2CZQLOiTCybJt46RsTMepx6e/m5rv+rRSFT/bUa9nABdRe EvycaIupBosPpiEngy6pBHADDSakkqSo1+Lr+fMj7CNSV/Tq9xyPK3ku4Gs/mTVc2A8sCV cNg+NJkuNTFxG8I+QkfVz0ny9xr3dKw= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-630-QDyC1pWOOrKEr6gC3D759A-1; Thu, 06 Mar 2025 11:10:33 -0500 X-MC-Unique: QDyC1pWOOrKEr6gC3D759A-1 X-Mimecast-MFC-AGG-ID: QDyC1pWOOrKEr6gC3D759A_1741277432 Received: by mail-wr1-f71.google.com with SMTP id ffacd0b85a97d-390de58dc4eso918254f8f.0 for ; Thu, 06 Mar 2025 08:10:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741277432; x=1741882232; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/wmiDwuO87WXvvjC7I5fkwx86eSsk3osWKrPxbBFPG0=; b=gfH/Iuho0appdUzGZvxN2EQ+CUpM3Ie47rf6rAE44kmELs5h2LxZquibumHuxYYd+x xCOwS9zmKOKogxXJ4+T1HwdvOCHAogF3H4H3zK/ovTIeyOVHmb4QBe1vmMKIDHyXXCQ6 OGNRCpQxifZEc58ntUh1C0TxISQjZ4ssSkx+oeHnnI1qrh79Zcdd7M7qSc/mKVJ5z3m4 CuhkH5DA+lLYIJcmtBVDwXVs5SpEjhwevuTG2FFsN9SeTAz2DCt/iPb0i1CtVUA8Svau IgsnL5D8ClY9lBHLd9msDtvPWgROGKFZRY07biO4FffKB5VYs6sHKHBvEMNMc9CImbU0 PgxQ== X-Forwarded-Encrypted: i=1; AJvYcCUn3ihSij8QXbRM8Va8rtw7Ov1SnSfu5YOukWto5i+5ma8Lfwgh4aay7Q38N3ngWKOaxecvkn+0YklQUoA=@vger.kernel.org X-Gm-Message-State: AOJu0YzMJDTxl8Id3oeGEnSK4ZgeuYiFpvrXUMPtN0iDSY9cnkdOeWtp TKXZDVxp9KC8jVsNQKEfnZcuuJeaKprs4O6+ITfg2eMzSE6HEgSGFCIwHix/5Kv+CbPycnYjyIU L0Am2tV8JPUGMdC1kYF8W7MSQw4mTSsw4rXFWfCv/MmDT6GE7pBENmwHzOlnbVdkfZ9eciH+HZB BRz9zFYF+YW5N2h//XnxLEEbInuuxRuJICe5sWXP4sFZrdyw== X-Gm-Gg: ASbGncuD2p+SRft+8nT549zvb9sEea6lNQiUD6S+ymLh4NAHsfzv/CaSGpvkJJl1MBJ BWpVyv2RJS84OEuqLCzDSIBtRnjcZFvwlzaW5ev3SFjgoUJIc1lq1NjR8WzLYctSzHkfwLRHdWP CCD0ufxReMfqu6VcC56m49AAnCaRhqWdjBngvnzuTz+oa081mBFNwQXr+GtXopXLx44V3yYxpK1 Puao39eU2TNtqYN1CKBU6Im97I16sGMPj+ihmCHOaHYxXFBPpwpl+WYo+Hag2KNsgP1834CLleY Qppvsi+fnhGoRRWptPqJiPv4S9a0dCTwL2H89H4Cm87O X-Received: by 2002:a05:6000:4009:b0:391:2d76:baaa with SMTP id ffacd0b85a97d-3912d76bd8amr2989269f8f.46.1741277431948; Thu, 06 Mar 2025 08:10:31 -0800 (PST) X-Google-Smtp-Source: AGHT+IExwfJ06CMtW3KsVMBD+eH+joBC1GGZThpXp/juD50SY5XTPBpyNFwL84JMOfifMG26Ysc25A== X-Received: by 2002:a05:6000:4009:b0:391:2d76:baaa with SMTP id ffacd0b85a97d-3912d76bd8amr2989207f8f.46.1741277431517; Thu, 06 Mar 2025 08:10:31 -0800 (PST) Received: from lleonard-thinkpadp16vgen1.rmtit.csb ([151.29.33.62]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3912c01cd31sm2477950f8f.52.2025.03.06.08.10.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Mar 2025 08:10:31 -0800 (PST) From: Luigi Leonardi Date: Thu, 06 Mar 2025 17:09:33 +0100 Subject: [PATCH net-next 2/2] vsock/test: Add test for null ptr deref when transport changes Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250306-test_vsock-v1-2-0320b5accf92@redhat.com> References: <20250306-test_vsock-v1-0-0320b5accf92@redhat.com> In-Reply-To: <20250306-test_vsock-v1-0-0320b5accf92@redhat.com> To: Stefano Garzarella , Michal Luczaj Cc: virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Luigi Leonardi X-Mailer: b4 0.14.2 Add a new test to ensure that when the transport changes a null pointer dereference does not occur[1]. Note that this test does not fail, but it may hang on the client side if it triggers a kernel oops. This works by creating a socket, trying to connect to a server, and then executing a second connect operation on the same socket but to a different CID (0). This triggers a transport change. If the connect operation is interrupted by a signal, this could cause a null-ptr-deref. Since this bug is non-deterministic, we need to try several times. It is safe to assume that the bug will show up within the timeout period. If there is a G2H transport loaded in the system, the bug is not triggered and this test will always pass. [1]https://lore.kernel.org/netdev/Z2LvdTTQR7dBmPb5@v4bel-B760M-AORUS-ELITE-= AX/ Suggested-by: Michal Luczaj Signed-off-by: Luigi Leonardi --- tools/testing/vsock/Makefile | 1 + tools/testing/vsock/vsock_test.c | 80 ++++++++++++++++++++++++++++++++++++= ++++ 2 files changed, 81 insertions(+) diff --git a/tools/testing/vsock/Makefile b/tools/testing/vsock/Makefile index 6e0b4e95e230500f99bb9c74350701a037ecd198..88211fd132d23ecdfd56ab08155= 80a237889e7f2 100644 --- a/tools/testing/vsock/Makefile +++ b/tools/testing/vsock/Makefile @@ -5,6 +5,7 @@ vsock_test: vsock_test.o vsock_test_zerocopy.o timeout.o co= ntrol.o util.o msg_ze vsock_diag_test: vsock_diag_test.o timeout.o control.o util.o vsock_perf: vsock_perf.o msg_zerocopy_common.o =20 +vsock_test: LDLIBS =3D -lpthread vsock_uring_test: LDLIBS =3D -luring vsock_uring_test: control.o util.o vsock_uring_test.o timeout.o msg_zeroco= py_common.o =20 diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_t= est.c index d0f6d253ac72d08a957cb81a3c38fcc72bec5a53..1e00cb6e117859d5c18fb3e52a5= 74444b5489173 100644 --- a/tools/testing/vsock/vsock_test.c +++ b/tools/testing/vsock/vsock_test.c @@ -23,6 +23,7 @@ #include #include #include +#include =20 #include "vsock_test_zerocopy.h" #include "timeout.h" @@ -1788,6 +1789,80 @@ static void test_stream_connect_retry_server(const s= truct test_opts *opts) close(fd); } =20 +static void *test_transport_change_thread(void *vargp) +{ + pid_t *t =3D (pid_t *)vargp; + + //We want this thread to terminate as soon as possible + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL); + + while (true) + kill(*t, SIGUSR1); + return NULL; +} + +static void test_transport_change_signal_handler(int signal) +{ +} + +static void test_transport_change_client(const struct test_opts *opts) +{ + __sighandler_t old_handler; + pid_t pid =3D getpid(); + pthread_t thread_id; + + old_handler =3D signal(SIGUSR1, test_transport_change_signal_handler); + + pthread_create(&thread_id, NULL, test_transport_change_thread, &pid); + + timeout_begin(TIMEOUT); + + while (true) { + struct sockaddr_vm sa =3D { + .svm_family =3D AF_VSOCK, + .svm_cid =3D opts->peer_cid, + .svm_port =3D opts->peer_port, + }; + + int s =3D socket(AF_VSOCK, SOCK_STREAM, 0); + + connect(s, (struct sockaddr *)&sa, sizeof(sa)); + + sa.svm_cid =3D 0; + connect(s, (struct sockaddr *)&sa, sizeof(sa)); + + close(s); + + if (timeout_check_expired()) + break; + } + + timeout_end(); + + pthread_cancel(thread_id); + //Wait for the thread to terminate + pthread_join(thread_id, NULL); + //Restore the old handler + signal(SIGUSR1, old_handler); +} + +static void test_transport_change_server(const struct test_opts *opts) +{ + timeout_begin(TIMEOUT); + + while (true) { + int s; + + s =3D vsock_stream_listen(opts->peer_cid, opts->peer_port); + close(s); + + if (timeout_check_expired()) + break; + } + + timeout_end(); +} + static void test_stream_linger_client(const struct test_opts *opts) { struct linger optval =3D { @@ -1984,6 +2059,11 @@ static struct test_case test_cases[] =3D { .run_client =3D test_stream_linger_client, .run_server =3D test_stream_linger_server, }, + { + .name =3D "SOCK_STREAM transport change null-ptr-deref", + .run_client =3D test_transport_change_client, + .run_server =3D test_transport_change_server, + }, {}, }; =20 --=20 2.48.1