From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3422C18DF5 for ; Tue, 20 Nov 2018 14:00:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF64D2075B for ; Tue, 20 Nov 2018 13:59:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="V5Swvmw9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF64D2075B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-bluetooth-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726868AbeKUA3K (ORCPT ); Tue, 20 Nov 2018 19:29:10 -0500 Received: from mail-oi1-f196.google.com ([209.85.167.196]:46823 "EHLO mail-oi1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726153AbeKUA3K (ORCPT ); Tue, 20 Nov 2018 19:29:10 -0500 Received: by mail-oi1-f196.google.com with SMTP id x202so1519168oif.13 for ; Tue, 20 Nov 2018 05:59:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=mdY95+07cgckjKy7cao6sF1PLDtnTfFPBmOsodJ0yxk=; b=V5Swvmw90nLmtHRxCfceJhFqZAcafH1mnqHDKTLi4ARhUxUG/fiT7IxdQxQiLLfh+s HNDgoNSr3IT3zpGbky8kEoObVT8G6Tc4gNQIAtTIyHuDDRcKGrg++ywDcChkfW7pd5Yc YOLqN9xAZwSPRQjRH0UBP3FW60IP4UrQvKHEM9w1Yce0SnXbUGSxySqoRSHXWpJ7rs/T B43ELSjxEAGukWXBnpdDs33vjdhgyV5rV2K/MjcEDM4+y5XRw710fR+MAkqE9sVaarkL BgeSflDRgNOC3PDc85HIwcBLu0Kr3nFGcxryZuszTiUNhwSJiC2y1l/3GzKqRtfD/jKM H88w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=mdY95+07cgckjKy7cao6sF1PLDtnTfFPBmOsodJ0yxk=; b=bLoqYgibplBceVPTZElV34isMFNQs2/RHHQ+dzcYF1c7xPkPirw23vq2BMj7OpzGbP 47DT1h5mwb4iV5xnNYP6uo8PnclSV1HRIOcsJJJS3Q36VKjarb28B2tYDDUjHwE9adJg 6sDLSrjw4NyhZAAh/7CJ91QNnVWSTedbuP1vVXMHhOCIQ2Y+yUqwLYZ8A6KFkMcEot7s ThrxUNJW0/iTsIjyY6TqRjTvf/yAUUMMFUYcaklYsCvgVL+i6/Luok00MyeJ1aX6bmDK DhtdEOWSBfddb90wQhQftJm+4mc5u0eVz5e0HHbKVgI4Lb+j0nLy+gv6bIzmn8se1ybH wAyQ== X-Gm-Message-State: AGRZ1gIiHY3uOs+efjWDl3n26MectoPJx1NvGUz94gl+z7vBJCVe8Nlm UuOTswfbpAttS21CUaPqP5z5cBHgatNGT4fDZJZX2g== X-Google-Smtp-Source: AJdET5cbL/rWQEd75X5N+dTUK3HZebDdXtPcSG7wO2/E0J1qtzYI0iPnfmNmMNFOVLMjkEETwtzxFnouu4wBaVmCQRo= X-Received: by 2002:aca:aa0d:: with SMTP id t13mr1188272oie.273.1542722391706; Tue, 20 Nov 2018 05:59:51 -0800 (PST) MIME-Version: 1.0 References: <20181119154311.27826-1-luiz.dentz@gmail.com> In-Reply-To: From: Luiz Augusto von Dentz Date: Tue, 20 Nov 2018 15:59:39 +0200 Message-ID: Subject: Re: [PATCH BlueZ 1/5] gatt: Fix invalid read when disconnecting To: gbenhaim@augury.com Cc: "linux-bluetooth@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Hi Gal, On Tue, Nov 20, 2018 at 2:35 PM Gal Ben Haim wrote: > > i tried with both git am and git apply Does that applies to v2 as well? I just rebased it on top master, are you sure you don't have your own changes conflicting with it? > On Tue, Nov 20, 2018 at 12:35 PM Luiz Augusto von Dentz > wrote: > > > > Hi Gal, > > On Tue, Nov 20, 2018 at 11:31 AM Gal Ben Haim wrote: > > > > > > I can't apply this patch, not to the revision in master and not to the 5.50 tag > > > > They are on top o master, how are you trying to apply them, with git am? > > > > > On Tue, Nov 20, 2018 at 10:50 AM Luiz Augusto von Dentz > > > wrote: > > > > > > > > On Mon, Nov 19, 2018 at 5:43 PM Luiz Augusto von Dentz > > > > wrote: > > > > > > > > > > From: Luiz Augusto von Dentz > > > > > > > > > > In case there is a client of AcquireNotify and a disconnect happens the > > > > > code not only have to free the client object but also destroy the io > > > > > associated with it, for this reason the client object cannot be freed > > > > > until the io is destroyed otherwise it may lead to the following error: > > > > > > > > > > Invalid read of size 4 > > > > > at 0x63920: notify_io_destroy (gatt-client.c:1461) > > > > > by 0x63EDB: pipe_io_destroy (gatt-client.c:1082) > > > > > by 0x6405B: characteristic_free (gatt-client.c:1663) > > > > > by 0x81F33: remove_interface (object.c:667) > > > > > by 0x826CB: g_dbus_unregister_interface (object.c:1391) > > > > > by 0x85D2B: queue_remove_all (queue.c:354) > > > > > by 0x635F7: unregister_service (gatt-client.c:1893) > > > > > by 0x85CF7: queue_remove_all (queue.c:339) > > > > > by 0x661DF: btd_gatt_client_service_removed (gatt-client.c:2199) > > > > > by 0x695CB: gatt_service_removed (device.c:3747) > > > > > by 0x85B17: queue_foreach (queue.c:220) > > > > > by 0x91283: notify_service_changed (gatt-db.c:280) > > > > > by 0x91283: gatt_db_service_destroy (gatt-db.c:291) > > > > > Address 0x515ed48 is 0 bytes inside a block of size 20 free'd > > > > > at 0x483EAD0: free (vg_replace_malloc.c:530) > > > > > by 0x85D2B: queue_remove_all (queue.c:354) > > > > > by 0x636D3: unregister_characteristic (gatt-client.c:1741) > > > > > by 0x85D2B: queue_remove_all (queue.c:354) > > > > > by 0x635F7: unregister_service (gatt-client.c:1893) > > > > > by 0x85CF7: queue_remove_all (queue.c:339) > > > > > by 0x661DF: btd_gatt_client_service_removed (gatt-client.c:2199) > > > > > by 0x695CB: gatt_service_removed (device.c:3747) > > > > > by 0x85B17: queue_foreach (queue.c:220) > > > > > by 0x91283: notify_service_changed (gatt-db.c:280) > > > > > by 0x91283: gatt_db_service_destroy (gatt-db.c:291) > > > > > by 0x85D2B: queue_remove_all (queue.c:354) > > > > > by 0x91387: gatt_db_clear_range (gatt-db.c:475) > > > > > --- > > > > > src/gatt-client.c | 24 ++++++++++++------------ > > > > > 1 file changed, 12 insertions(+), 12 deletions(-) > > > > > > > > > > diff --git a/src/gatt-client.c b/src/gatt-client.c > > > > > index 234f46ed7..55aa5e423 100644 > > > > > --- a/src/gatt-client.c > > > > > +++ b/src/gatt-client.c > > > > > @@ -1645,13 +1645,22 @@ static const GDBusMethodTable characteristic_methods[] = { > > > > > { } > > > > > }; > > > > > > > > > > +static void remove_client(void *data) > > > > > +{ > > > > > + struct notify_client *ntfy_client = data; > > > > > + struct btd_gatt_client *client = ntfy_client->chrc->service->client; > > > > > + > > > > > + queue_remove(client->all_notify_clients, ntfy_client); > > > > > + > > > > > + notify_client_unref(ntfy_client); > > > > > +} > > > > > + > > > > > static void characteristic_free(void *data) > > > > > { > > > > > struct characteristic *chrc = data; > > > > > > > > > > /* List should be empty here */ > > > > > queue_destroy(chrc->descs, NULL); > > > > > - queue_destroy(chrc->notify_clients, NULL); > > > > > > > > > > if (chrc->write_io) { > > > > > queue_remove(chrc->service->client->ios, chrc->write_io->io); > > > > > @@ -1663,6 +1672,8 @@ static void characteristic_free(void *data) > > > > > pipe_io_destroy(chrc->notify_io); > > > > > } > > > > > > > > > > + queue_destroy(chrc->notify_clients, remove_client); > > > > > + > > > > > g_free(chrc->path); > > > > > free(chrc); > > > > > } > > > > > @@ -1715,16 +1726,6 @@ static struct characteristic *characteristic_create( > > > > > return chrc; > > > > > } > > > > > > > > > > -static void remove_client(void *data) > > > > > -{ > > > > > - struct notify_client *ntfy_client = data; > > > > > - struct btd_gatt_client *client = ntfy_client->chrc->service->client; > > > > > - > > > > > - queue_remove(client->all_notify_clients, ntfy_client); > > > > > - > > > > > - notify_client_unref(ntfy_client); > > > > > -} > > > > > - > > > > > static void unregister_characteristic(void *data) > > > > > { > > > > > struct characteristic *chrc = data; > > > > > @@ -1738,7 +1739,6 @@ static void unregister_characteristic(void *data) > > > > > if (chrc->write_op) > > > > > bt_gatt_client_cancel(gatt, chrc->write_op->id); > > > > > > > > > > - queue_remove_all(chrc->notify_clients, NULL, NULL, remove_client); > > > > > queue_remove_all(chrc->descs, NULL, NULL, unregister_descriptor); > > > > > > > > > > g_dbus_unregister_interface(btd_get_dbus_connection(), chrc->path, > > > > > -- > > > > > 2.17.2 > > > > > > > > Can you try with this set to see it does work properly. > > > > > > > > -- > > > > Luiz Augusto von Dentz > > > > > > > > -- > > Luiz Augusto von Dentz -- Luiz Augusto von Dentz