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[79.53.30.109]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3564b762ca8sm10588060f8f.112.2024.05.28.03.35.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 03:35:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1716892554; 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=3UtH0D4I15f6AmqPGZ/mKuxu8KcITJcJzO63ZIJCMrs=; b=M6IUFiSxUs6k+M0DPac/gE1T4R+iGn5r1rI6LE/QoIvcpg9mx7whN4T1gWrauAefWvaG1e /3bHyjcn4bMRWDO5pJqIHCEtWB2V1OFAzCP3MI7u9pZSjpiT2Fr+ZGEinf/zRDEFXS6Pz+ fT0/42TJnBJbRTjU17psBt9ijeF9v4E= X-MC-Unique: EgYDU-qnMauWdSwHeLPDfw-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716892551; x=1717497351; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3UtH0D4I15f6AmqPGZ/mKuxu8KcITJcJzO63ZIJCMrs=; b=CmtvuelmUE59KE8PuKPj6Jquj+qSBRRlcoBkxj4A/kkqzfxf+lhVMlFTModkca4S07 a4fOBLOQdjTL71Wjh3n6oBBk0FamyrxgHA5szSZLmz73Xp+P98qRSkBaYjsCiYWGlzXk 21Fbj7J8Gxl1sXa5slxaO+Ckac3sewBeth3GGpCQc2YJXzU1lCbMbjdqim63N/t6AuZR 9j5e+C/Y/dQEES0sE1vYszmTcDZYnKFvGU0MbhyyiahEJzXerd32CmMJp/QQQ6S541Kg 4Axef/FEZPNVzmPcyaTCPwl2WP1Z5HqNm/lWpEG/5EUyoQXfWk/0T5GgmTml22GzPeaN 3mVw== X-Gm-Message-State: AOJu0Yxm4r2JJd/Wicq+HbpnCFwmN7agyqIz2wUQBJi/CU4qGCRwlqSa tNugy+d9whVEafeEcSFoi6iCl1Qfz6idz/Fabkq7zmVA9dNdE+qFy8EHvzm9xfZj3hTrFydFhCs CwVQO8aeoHzsHMER9H54qwRJIU2NMbD/VXu0g/XjrJrlULSz4fEH+VPqweAq8hNbP7TLnlWDjo0 wG0i+p2O9Ch+brY2AVHyHwVuEOeeGcN1ny6xlY X-Received: by 2002:a5d:4385:0:b0:357:5051:2a58 with SMTP id ffacd0b85a97d-35750512b9fmr6204890f8f.16.1716892551404; Tue, 28 May 2024 03:35:51 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFWuQ2BGJUk3myyZuI10BwMyCNuCR38/3F2ZlIx6PoUKn8VGkBeGUglZZ5r0fNeXYH/kE3XLA== X-Received: by 2002:a5d:4385:0:b0:357:5051:2a58 with SMTP id ffacd0b85a97d-35750512b9fmr6204854f8f.16.1716892551077; Tue, 28 May 2024 03:35:51 -0700 (PDT) From: Stefano Garzarella To: qemu-devel@nongnu.org Cc: slp@redhat.com, David Hildenbrand , Paolo Bonzini , Eduardo Habkost , Igor Mammedov , Brad Smith , gmaglione@redhat.com, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Laurent Vivier , Kevin Wolf , Jason Wang , "Michael S. Tsirkin" , Eric Blake , Markus Armbruster , Coiby Xu , qemu-block@nongnu.org, Hanna Reitz , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Raphael Norwitz , Thomas Huth , stefanha@redhat.com, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Gerd Hoffmann , Stefano Garzarella Subject: [PATCH v6 01/12] libvhost-user: set msg.msg_control to NULL when it is empty Date: Tue, 28 May 2024 12:35:32 +0200 Message-ID: <20240528103543.145412-2-sgarzare@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240528103543.145412-1-sgarzare@redhat.com> References: <20240528103543.145412-1-sgarzare@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=sgarzare@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.034, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1716892618407100001 On some OS (e.g. macOS) sendmsg() returns -1 (errno EINVAL) if the `struct msghdr` has the field `msg_controllen` set to 0, but `msg_control` is not NULL. Reviewed-by: Eric Blake Reviewed-by: David Hildenbrand Reviewed-by: Philippe Mathieu-Daud=C3=A9 Tested-by: Philippe Mathieu-Daud=C3=A9 Acked-by: Stefan Hajnoczi Signed-off-by: Stefano Garzarella --- subprojects/libvhost-user/libvhost-user.c | 1 + 1 file changed, 1 insertion(+) diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvho= st-user/libvhost-user.c index a879149fef..22bea0c775 100644 --- a/subprojects/libvhost-user/libvhost-user.c +++ b/subprojects/libvhost-user/libvhost-user.c @@ -632,6 +632,7 @@ vu_message_write(VuDev *dev, int conn_fd, VhostUserMsg = *vmsg) memcpy(CMSG_DATA(cmsg), vmsg->fds, fdsize); } else { msg.msg_controllen =3D 0; + msg.msg_control =3D NULL; } =20 do { --=20 2.45.1