From patchwork Fri Feb 23 21:37:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Skvortsov X-Patchwork-Id: 775304 Received: from mail-lf1-f41.google.com (mail-lf1-f41.google.com [209.85.167.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 27A85145B1B; Fri, 23 Feb 2024 21:39:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708724378; cv=none; b=teeor1z+xL6o5oFbIpVXwkbGQtD7Cc0SbOyK54Luj+7Pc+pQooHK4rTDyaafBuDq4byynpbzrtaRyRtIBcLF8N2yTkhhgZggto0cOUx3C+chPr4AFXVyn/RiIlM/c8Ki5uypgDX7wVGyDW9K8KXFNiEcvLwoaLXXA1fmCtvWrr4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708724378; c=relaxed/simple; bh=sOUw0EI0A2XpPLgKATy5HO7GEagZ+UA30b2qbtJAt6w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=c84QQyfpZopW8YDCgK5aZ2vGUlKUtaruW22wPCE7pAyWTBq6niOHblCVRISMSTCll8+d6shfa3EriDq3axkUxeNp+zx6fJ3rLyEhTdSIdBaFWZIY5z+SPVeeIkoBIDh/TMjGMUBDi6N1TEGdz8tSgtEK5qLUHo5mvqHXH30MFAM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=FKczm5M9; arc=none smtp.client-ip=209.85.167.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FKczm5M9" Received: by mail-lf1-f41.google.com with SMTP id 2adb3069b0e04-512e733a525so822287e87.0; Fri, 23 Feb 2024 13:39:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708724375; x=1709329175; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+Lfyr9SJ9Apv/iNGQwbzBDI0ZB8HAoTSS9c30HeXXsY=; b=FKczm5M9E9vunlq0hM1WL9ouD5bQ6tIdQsvnIJ6zx0n0PUwccjcmJssLMIg34uGFRL BUEoNZ8xeUjqM1zZYHg44aFQrIjXjbloLWiTfXzDeFMj0SW+dflL2LfqvoRyeI5rGuSh w9hUVnEeePLKqK/P68ZvOe1gSxxEzAMgt+J/fLYOSdhxcbZc737WqAPfn4s7bQ69nmUh FufhX2np87xiKSk+li8va0SoMlOVH7Zsof1hIdTih0C/DZadSkxFrtq1I4dm4WUy0SrD YgfnSgjaaZoNirDm4hUIyTQ0KGrja5BkRPNGBHNV+FGpD3A6B2AXadzOR9Ry90bsnzcL B+iQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708724375; x=1709329175; 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=+Lfyr9SJ9Apv/iNGQwbzBDI0ZB8HAoTSS9c30HeXXsY=; b=rJJ8WW+t/eKh+fEqbwLTFZKZ6GsjPwFSNWCyAlMWfLmx3XsU4U8a8jAVEeRkQ3ibZ3 b96wkQYFvRSVoyyLr0y1U1raH027gJyV4DE0O/G81WEW85NsRoPT7P6YfBP+Do3g/jcv KJZ1JNJgBn0PNy1G/thhH3FAUCvikhfcha+j5ID1pap5FcNgI4k7t4ElOwcvvLZgWc4f dBey7iHlMvGj35vab38TLB8iN5dbIyfOSlZk4ue0YE39FLCOtQ7zhDH8ECFs6Ag0maaE 6lHC9wTcbNt/p9Uf6ReLWKeq4wMVCqNyB6FpCiGED+qVhriGZsXpTh5N82cO491tyFs3 GV2w== X-Forwarded-Encrypted: i=1; AJvYcCUv6nTpx+E95Pu7JCcVK54aNgv1ZN4ReNwXPY/zc5fYzefM8b54J6ZMb8ZlQgrpXe4J1i4SNrx7yTS99+dX2SI0SmHYUEX7w3bXiYM3WEs6X5v0CxxxoZG8sFb9gzH3V+hD/YSZREdgPBwicPJg X-Gm-Message-State: AOJu0YwG+VyUTuXLsP8+iJp/yDCZoe25MWkFdyWxPW5pqMSkVIRK3wCX j2Zh/1bxo7D6FpJsZaX5Epy8VPkkxLl1QSzBtMwEnGn6g/wqQjFQ X-Google-Smtp-Source: AGHT+IG7uwgcy2hRZyF/L1Z+9GG3qzqoKMOqijWeToDnFV18Fn1dGAbPkM11LUe/boJFFVRFRQjfkA== X-Received: by 2002:a05:6512:ba2:b0:511:9ca5:63f with SMTP id b34-20020a0565120ba200b005119ca5063fmr366853lfv.21.1708724375052; Fri, 23 Feb 2024 13:39:35 -0800 (PST) Received: from localhost.localdomain ([94.19.228.143]) by smtp.gmail.com with ESMTPSA id i1-20020ac25b41000000b005114ee99515sm2584897lfp.220.2024.02.23.13.39.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Feb 2024 13:39:34 -0800 (PST) From: Andrey Skvortsov To: Marcel Holtmann , Luiz Augusto von Dentz , Hilda Wu , Alex Lu , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Arnaud Ferraris , Andrey Skvortsov Subject: [PATCH 1/2] Bluetooth: hci_h5: Add ability to allocate memory for private data Date: Sat, 24 Feb 2024 00:37:03 +0300 Message-ID: <20240223213704.290849-2-andrej.skvortzov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240223213704.290849-1-andrej.skvortzov@gmail.com> References: <20240223213704.290849-1-andrej.skvortzov@gmail.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In some cases uart-base drivers may need to use priv data. For example, to store information needed for devcoredump. Fixes: 044014ce85a1 ("Bluetooth: btrtl: Add Realtek devcoredump support") Signed-off-by: Andrey Skvortsov --- drivers/bluetooth/hci_h5.c | 4 +++- drivers/bluetooth/hci_serdev.c | 9 +++++---- drivers/bluetooth/hci_uart.h | 12 +++++++++++- 3 files changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c index 71e748a9477e..b66136348bd6 100644 --- a/drivers/bluetooth/hci_h5.c +++ b/drivers/bluetooth/hci_h5.c @@ -113,6 +113,7 @@ struct h5_vnd { int (*suspend)(struct h5 *h5); int (*resume)(struct h5 *h5); const struct acpi_gpio_mapping *acpi_gpio_map; + int sizeof_priv; }; struct h5_device_data { @@ -863,7 +864,8 @@ static int h5_serdev_probe(struct serdev_device *serdev) if (IS_ERR(h5->device_wake_gpio)) return PTR_ERR(h5->device_wake_gpio); - return hci_uart_register_device(&h5->serdev_hu, &h5p); + return hci_uart_register_device_priv(&h5->serdev_hu, &h5p, + h5->vnd->sizeof_priv); } static void h5_serdev_remove(struct serdev_device *serdev) diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c index 39c8b567da3c..214fff876eae 100644 --- a/drivers/bluetooth/hci_serdev.c +++ b/drivers/bluetooth/hci_serdev.c @@ -300,8 +300,9 @@ static const struct serdev_device_ops hci_serdev_client_ops = { .write_wakeup = hci_uart_write_wakeup, }; -int hci_uart_register_device(struct hci_uart *hu, - const struct hci_uart_proto *p) +int hci_uart_register_device_priv(struct hci_uart *hu, + const struct hci_uart_proto *p, + int sizeof_priv) { int err; struct hci_dev *hdev; @@ -325,7 +326,7 @@ int hci_uart_register_device(struct hci_uart *hu, set_bit(HCI_UART_PROTO_READY, &hu->flags); /* Initialize and register HCI device */ - hdev = hci_alloc_dev(); + hdev = hci_alloc_dev_priv(sizeof_priv); if (!hdev) { BT_ERR("Can't allocate HCI device"); err = -ENOMEM; @@ -394,7 +395,7 @@ int hci_uart_register_device(struct hci_uart *hu, percpu_free_rwsem(&hu->proto_lock); return err; } -EXPORT_SYMBOL_GPL(hci_uart_register_device); +EXPORT_SYMBOL_GPL(hci_uart_register_device_priv); void hci_uart_unregister_device(struct hci_uart *hu) { diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index fb4a2d0d8cc8..68c8c7e95d64 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -97,7 +97,17 @@ struct hci_uart { int hci_uart_register_proto(const struct hci_uart_proto *p); int hci_uart_unregister_proto(const struct hci_uart_proto *p); -int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p); + +int hci_uart_register_device_priv(struct hci_uart *hu, + const struct hci_uart_proto *p, + int sizeof_priv); + +static inline int hci_uart_register_device(struct hci_uart *hu, + const struct hci_uart_proto *p) +{ + return hci_uart_register_device_priv(hu, p, 0); +} + void hci_uart_unregister_device(struct hci_uart *hu); int hci_uart_tx_wakeup(struct hci_uart *hu); From patchwork Fri Feb 23 21:37:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Skvortsov X-Patchwork-Id: 775596 Received: from mail-lj1-f175.google.com (mail-lj1-f175.google.com [209.85.208.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 770C514CAD4; Fri, 23 Feb 2024 21:39:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Fri, 23 Feb 2024 13:39:40 -0800 (PST) Received: from localhost.localdomain ([94.19.228.143]) by smtp.gmail.com with ESMTPSA id i1-20020ac25b41000000b005114ee99515sm2584897lfp.220.2024.02.23.13.39.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Feb 2024 13:39:40 -0800 (PST) From: Andrey Skvortsov To: Marcel Holtmann , Luiz Augusto von Dentz , Hilda Wu , Alex Lu , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Arnaud Ferraris , Andrey Skvortsov Subject: [PATCH 2/2] Bluetooth: btrtl: fix out of bounds memory access Date: Sat, 24 Feb 2024 00:37:04 +0300 Message-ID: <20240223213704.290849-3-andrej.skvortzov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240223213704.290849-1-andrej.skvortzov@gmail.com> References: <20240223213704.290849-1-andrej.skvortzov@gmail.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The problem is detected by KASAN. btrtl driver uses private hci data to store 'struct btrealtek_data'. If btrtl driver is used with btusb, then memory for private hci data is allocated in btusb. But no private data is allocated after hci_dev, when btrtl is used with hci_h5. This commit adds memory allocation for hci_h5 case. ================================================================== BUG: KASAN: slab-out-of-bounds in btrtl_initialize+0x6cc/0x958 [btrtl] Write of size 8 at addr ffff00000f5a5748 by task kworker/u9:0/76 Hardware name: Pine64 PinePhone (1.2) (DT) Workqueue: hci0 hci_power_on [bluetooth] Call trace: dump_backtrace+0x9c/0x128 show_stack+0x20/0x38 dump_stack_lvl+0x48/0x60 print_report+0xf8/0x5d8 kasan_report+0x90/0xd0 __asan_store8+0x9c/0xc0 [btrtl] h5_btrtl_setup+0xd0/0x2f8 [hci_uart] h5_setup+0x50/0x80 [hci_uart] hci_uart_setup+0xd4/0x260 [hci_uart] hci_dev_open_sync+0x1cc/0xf68 [bluetooth] hci_dev_do_open+0x34/0x90 [bluetooth] hci_power_on+0xc4/0x3c8 [bluetooth] process_one_work+0x328/0x6f0 worker_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Allocated by task 53: kasan_save_stack+0x3c/0x68 kasan_save_track+0x20/0x40 kasan_save_alloc_info+0x68/0x78 __kasan_kmalloc+0xd4/0xd8 __kmalloc+0x1b4/0x3b0 hci_alloc_dev_priv+0x28/0xa58 [bluetooth] hci_uart_register_device+0x118/0x4f8 [hci_uart] h5_serdev_probe+0xf4/0x178 [hci_uart] serdev_drv_probe+0x54/0xa0 really_probe+0x254/0x588 __driver_probe_device+0xc4/0x210 driver_probe_device+0x64/0x160 __driver_attach_async_helper+0x88/0x158 async_run_entry_fn+0xd0/0x388 process_one_work+0x328/0x6f0 worker_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Last potentially related work creation: kasan_save_stack+0x3c/0x68 __kasan_record_aux_stack+0xb0/0x150 kasan_record_aux_stack_noalloc+0x14/0x20 __queue_work+0x33c/0x960 queue_work_on+0x98/0xc0 hci_recv_frame+0xc8/0x1e8 [bluetooth] h5_complete_rx_pkt+0x2c8/0x800 [hci_uart] h5_rx_payload+0x98/0xb8 [hci_uart] h5_recv+0x158/0x3d8 [hci_uart] hci_uart_receive_buf+0xa0/0xe8 [hci_uart] ttyport_receive_buf+0xac/0x178 flush_to_ldisc+0x130/0x2c8 process_one_work+0x328/0x6f0 worker_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Second to last potentially related work creation: kasan_save_stack+0x3c/0x68 __kasan_record_aux_stack+0xb0/0x150 kasan_record_aux_stack_noalloc+0x14/0x20 __queue_work+0x788/0x960 queue_work_on+0x98/0xc0 __hci_cmd_sync_sk+0x23c/0x7a0 [bluetooth] __hci_cmd_sync+0x24/0x38 [bluetooth] btrtl_initialize+0x760/0x958 [btrtl] h5_btrtl_setup+0xd0/0x2f8 [hci_uart] h5_setup+0x50/0x80 [hci_uart] hci_uart_setup+0xd4/0x260 [hci_uart] hci_dev_open_sync+0x1cc/0xf68 [bluetooth] hci_dev_do_open+0x34/0x90 [bluetooth] hci_power_on+0xc4/0x3c8 [bluetooth] process_one_work+0x328/0x6f0 worker_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 ================================================================== Fixes: 5b355944b190 ("Bluetooth: btrtl: Add btrealtek data struct") Fixes: 044014ce85a1 ("Bluetooth: btrtl: Add Realtek devcoredump support") Signed-off-by: Andrey Skvortsov --- drivers/bluetooth/hci_h5.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c index b66136348bd6..c0436881a533 100644 --- a/drivers/bluetooth/hci_h5.c +++ b/drivers/bluetooth/hci_h5.c @@ -1072,6 +1072,7 @@ static struct h5_vnd rtl_vnd = { .suspend = h5_btrtl_suspend, .resume = h5_btrtl_resume, .acpi_gpio_map = acpi_btrtl_gpios, + .sizeof_priv = sizeof(struct btrealtek_data), }; static const struct h5_device_data h5_data_rtl8822cs = {