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spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59722 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1knmQB-00024l-Dr for qemu-devel@archiver.kernel.org; Fri, 11 Dec 2020 12:41:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50580) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1knlvB-0004K1-PX for qemu-devel@nongnu.org; Fri, 11 Dec 2020 12:09:33 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:22112) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1knluc-0002Is-PS for qemu-devel@nongnu.org; Fri, 11 Dec 2020 12:09:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607706538; 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=K+5lURr3H1iosGWhxxAwmPhxO97vAel5aKpCHk+8XmM=; b=BwlKbsPHjVBMU+QTcrz5q1vEafkNmlQY8suW0G6KG+JyCuqthTZlwiXAvtXDXV7bdFQzhX FNAoFi2ylorvv3Ligg866KqrNzqKocSqwnp0bLcEoYifPUtZFwVWTeLxe/Tk85U3gi3lEh NntrB0F9blQzSlgvwZXJv9iPQ0vD1hs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-297-cGCguWtBNXadWnOhByVNDg-1; Fri, 11 Dec 2020 12:08:55 -0500 X-MC-Unique: cGCguWtBNXadWnOhByVNDg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B9482800D55; Fri, 11 Dec 2020 17:08:54 +0000 (UTC) Received: from merkur.redhat.com (ovpn-114-231.ams2.redhat.com [10.36.114.231]) by smtp.corp.redhat.com (Postfix) with ESMTP id B911E5D6A8; Fri, 11 Dec 2020 17:08:53 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PULL 27/34] can-host: Fix crash when 'canbus' property is not set Date: Fri, 11 Dec 2020 18:08:05 +0100 Message-Id: <20201211170812.228643-28-kwolf@redhat.com> In-Reply-To: <20201211170812.228643-1-kwolf@redhat.com> References: <20201211170812.228643-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=kwolf@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=-0.001, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Providing the 'if' property, but not 'canbus' segfaults like this: #0 0x0000555555b0f14d in can_bus_insert_client (bus=0x0, client=0x555556aa9af0) at ../net/can/can_core.c:88 #1 0x00005555559c3803 in can_host_connect (ch=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:62 #2 0x00005555559c386a in can_host_complete (uc=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:72 #3 0x0000555555d52de9 in user_creatable_complete (uc=0x555556aa9ac0, errp=0x7fffffffd5c8) at ../qom/object_interfaces.c:23 Add the missing NULL check. Signed-off-by: Kevin Wolf Message-Id: <20201130105615.21799-5-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- net/can/can_host.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/can/can_host.c b/net/can/can_host.c index be4547d913..ba7f163d0a 100644 --- a/net/can/can_host.c +++ b/net/can/can_host.c @@ -53,6 +53,11 @@ static void can_host_connect(CanHostState *ch, Error **errp) CanHostClass *chc = CAN_HOST_GET_CLASS(ch); Error *local_err = NULL; + if (ch->bus == NULL) { + error_setg(errp, "'canbus' property not set"); + return; + } + chc->connect(ch, &local_err); if (local_err) { error_propagate(errp, local_err); -- 2.29.2