- 03 Aug, 2018 9 commits
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Hans de Goede authored
Add basic support for serdev enumerated devices, note sine this does not (yet) declare any of / ACPI ids to bind to atm this is a nop. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org>
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Hans de Goede authored
The contents of the rtl_bt/rtlXXXX_config.bin file may be board specific allow the caller of btrtl_initialize to specify a postfix identifying the board, which if specified will make btrtl_initialize look for rtl_bt/rtlXXXX_config-<postfix>.bin instead. Signed-off-by:
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Martin Blumenstingl authored
The Realtek RTL8723BS and RTL8723DS chipsets are SDIO wifi chips. They also contain a Bluetooth module which is connected via UART to the host. Realtek's userspace initialization tool (rtk_hciattach) differentiates these two via the HCI version and revision returned by the HCI_OP_READ_LOCAL_VERSION command. Additionally we apply these checks only the for UART devices. Everything else is assumed to be a "RTL8723B" which was originally supported by the driver (communicating via USB). Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
Jeremy Cline <jeremy@jcline.org> Signed-off-by:
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Martin Blumenstingl authored
The UART settings are embedded in the config blob. This has to be parsed to successfully initialize the Bluetooth part of the RTL8723BS (which is an SDIO chip, but the Bluetooth part is connected via UART). The Realtek "rtl8723bs_bt" and "rtl8723ds_bt" userspace Bluetooth UART initialization tools (rtk_hciattach) use the following sequence: - send H5 sync pattern (already supported by hci_h5) - get LMP version (already supported by btrtl) - get ROM version (already supported by btrtl) - load the firmware and config for the current chipset (already supported by btrtl) - read UART settings from the config blob (part of this patch) - send UART settings via a vendor command to the device (which changes the baudrate of the device and enables or disables flow control depending on the config) - change the baudrate and flow control settings on the host - send the firmware and config blob to the device (already supported by btrtl) Sending the last firmware and config blob download command (rtl_download_cmd) fails if the UART settings are not updated beforehand. This is presumably because the device applies the config right after the firmware and config blob download - which means that at this point the host is using different UART settings than the device (which will obviously result in non-working communication). Signed-off-by:
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Hans de Goede authored
Consistently use rtl_dev_err and rtl_dev_info everywhere for messages. Signed-off-by:
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Martin Blumenstingl authored
This prepares the btrtl code so it can be used to initialize Bluetooth modules connected via UART (these are found for example on the RTL8723BS and RTL8723DS SDIO chips, which come with an embedded UART Bluetooth module). The Realtek "rtl8723bs_bt" and "rtl8723ds_bt" userspace Bluetooth UART initialization tools (rtk_hciattach) use the following sequence: 1) send H5 sync pattern (already supported by hci_h5) 2) get LMP version (already supported by btrtl) 3) get ROM version (already supported by btrtl) 4) load the firmware and config for the current chipset (already supported by btrtl) 5) read UART settings from the config blob (currently not supported) 6) send UART settings via a vendor command to the device (which changes the baudrate of the device and enables or disables flow control depending on the config) 7) change the baudrate and flow control settings on the host 8) send the firmware and config blob to the device (already supported by btrtl) The main reason why the initialization has to be split is step #7. This requires changes to the underlying "bus", which should be kept outside of the "generic" btrtl driver. The idea for this split is borrowed from the btbcm driver but adjusted where needed (the btrtl driver for example needs two blobs: firmware and config, while the btbcm only needs one). This also prepares the code for step #5 (parsing the config blob) by centralizing the code which loads the firmware and config blobs and storing the result in the new struct btrtl_device_info. Signed-off-by:
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Martin Blumenstingl authored
This makes the firmware names show up in modinfo. Signed-off-by:
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Marcel Holtmann authored
Replace the BT_ERR functions with bt_dev_err to get a consistent error printout that always prefixes the HCI device identifier. Signed-off-by:
Johan Hedberg <johan.hedberg@intel.com>
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Amit K Bag authored
Issue description: Intel 7265 shares the same RF with Wifi and BT. In the shutdown scenario turn off BT, followed by turn WiFi off and on causing error in RF calibration in WiFi Module Solution: before shutdown BT ensure any RF activity to clear by HCI reset command. Reference Logs: ERR kernel: [ 386.193284] iwlwifi 0000:01:00.0: Failed to run INIT calibrations: -5 ERR kernel: [ 386.193298] iwlwifi 0000:01:00.0: Failed to run INIT ucode: -5 ERR kernel: [ 386.193309] iwlwifi 0000:01:00.0: Failed to start RT ucode: -5 Signed-off-by:
Amit K Bag <amit.k.bag@intel.com> Singed-off-by:
Chethan T N <chethan.tumkur.narayan@intel.com> Signed-off-by:
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- 01 Aug, 2018 1 commit
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Mark Salyzyn authored
CVE-2018-9363 The buffer length is unsigned at all layers, but gets cast to int and checked in hidp_process_report and can lead to a buffer overflow. Switch len parameter to unsigned int to resolve issue. This affects 3.18 and newer kernels. Signed-off-by:
Mark Salyzyn <salyzyn@android.com> Fixes: a4b1b587 ("HID: Bluetooth: hidp: make sure input buffers are big enough") Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Kees Cook <keescook@chromium.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-bluetooth@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: security@kernel.org Cc: kernel-team@android.com Acked-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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- 30 Jul, 2018 18 commits
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Marcel Holtmann authored
This fixes two issues with setting hid->name information. CC net/bluetooth/hidp/core.o In function ‘hidp_setup_hid’, inlined from ‘hidp_session_dev_init’ at net/bluetooth/hidp/core.c:815:9, inlined from ‘hidp_session_new’ at net/bluetooth/hidp/core.c:953:8, inlined from ‘hidp_connection_add’ at net/bluetooth/hidp/core.c:1366:8: net/bluetooth/hidp/core.c:778:2: warning: ‘strncpy’ output may be truncated copying 127 bytes from a string of length 127 [-Wstringop-truncation] strncpy(hid->name, req->name, sizeof(req->name) - 1); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CC net/bluetooth/hidp/core.o net/bluetooth/hidp/core.c: In function ‘hidp_setup_hid’: net/bluetooth/hidp/core.c:778:38: warning: argument to ‘sizeof’ in ‘strncpy’ call is the same expression as the source; did you mean to use the size of the destination? [-Wsizeof-pointer-memaccess] strncpy(hid->name, req->name, sizeof(req->name)); ^ Signed-off-by: -
Sean Wang authored
Add a new quirk HCI_QUIRK_NON_PERSISTENT_SETUP allowing that a quirk that runs setup() after every open() and not just after the first open(). Signed-off-by:
Sean Wang <sean.wang@mediatek.com> Signed-off-by:
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Jaganath Kanakkassery authored
This patch adds support for advertising in primary and secondary channel on different PHYs. User can add the phy preference in the flag based on which phy type will be added in extended advertising parameter would be set. @ MGMT Command: Add Advertising (0x003e) plen 11 Instance: 1 Flags: 0x00000200 Advertise in CODED on Secondary channel Duration: 0 Timeout: 0 Advertising data length: 0 Scan response length: 0 < HCI Command: LE Set Extended Advertising Enable (0x08|0x0039) plen 2 Extended advertising: Disabled (0x00) Number of sets: Disable all sets (0x00) > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Advertising Enable (0x08|0x0039) ncmd 2 Status: Success (0x00) < HCI Command: LE Set Extended Advertising Parameters (0x08|0x0036) plen 25 Handle: 0x00 Properties: 0x0000 Min advertising interval: 1280.000 msec (0x0800) Max advertising interval: 1280.000 msec (0x0800) Channel map: 37, 38, 39 (0x07) Own address type: Random (0x01) Peer address type: Public (0x00) Peer address: 00:00:00:00:00:00 (OUI 00-00-00) Filter policy: Allow Scan Request from Any, Allow Connect Request from Any (0x00) TX power: 127 dbm (0x7f) Primary PHY: LE Coded (0x03) Secondary max skip: 0x00 Secondary PHY: LE Coded (0x03) SID: 0x00 Scan request notifications: Disabled (0x00) Signed-off-by:Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com> Signed-off-by:
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Jaganath Kanakkassery authored
This event comes after connection complete event for incoming connections. Since we now have different random address for each instance, conn resp address is assigned from this event. As of now only connection part is handled as we are not enabling duration or max num of events while starting ext adv. Signed-off-by:
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Jaganath Kanakkassery authored
This basically sets the random address for the adv instance Random address can be set only if the instance is created which is done in Set ext adv param. Random address and rpa expire timer and flags have been added to adv instance which will be used when the respective instance is scheduled. This introduces a hci_get_random_address() which returns the own address type and random address (rpa or nrpa) based on the instance flags and hdev flags. New function is required since own address type should be known before setting adv params but address can be set only after setting params. < HCI Command: LE Set Advertising Set Random Address (0x08|0x0035) plen 7 Advertising handle: 0x00 Advertising random address: 3C:8E:56:9B:77:84 (OUI 3C-8E-56) > HCI Event: Command Complete (0x0e) plen 4 LE Set Advertising Set Random Address (0x08|0x0035) ncmd 1 Status: Success (0x00) Signed-off-by: -
Jaganath Kanakkassery authored
This patch does extended advertising for directed advertising if the controller supportes. Instance 0 is used for directed advertising. Signed-off-by:
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Jaganath Kanakkassery authored
If ext adv is enabled then use ext adv to disable as well. Also remove the adv set during LE disable. < HCI Command: LE Set Extended Advertising Enable (0x08|0x0039) plen 2 Extended advertising: Disabled (0x00) Number of sets: Disable all sets (0x00) > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Advertising Enable (0x08|0x0039) ncmd 2 Status: Success (0x00) Signed-off-by: -
Jaganath Kanakkassery authored
This patch implements Set Ext Adv data and Set Ext Scan rsp data if controller support extended advertising. Currently the operation is set as Complete data and fragment preference is set as no fragment < HCI Command: LE Set Extended Advertising Data (0x08|0x0037) plen 35 Handle: 0x00 Operation: Complete extended advertising data (0x03) Fragment preference: Minimize fragmentation (0x01) Data length: 0x15 16-bit Service UUIDs (complete): 2 entries Heart Rate (0x180d) Battery Service (0x180f) Name (complete): Test LE Company: Google (224) Data: 0102 > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Advertising Data (0x08|0x0037) ncmd 1 Status: Success (0x00) Signed-off-by: -
Jaganath Kanakkassery authored
This patch basically replaces legacy adv with extended adv based on the controller support. Currently there is no design change. ie only one adv set will be enabled at a time. This also adds tx_power in instance and store whatever returns from Set_ext_parameter, use the same in adv data as well. For instance 0 tx_power is stored in hdev only. < HCI Command: LE Set Extended Advertising Parameters (0x08|0x0036) plen 25 Handle: 0x00 Properties: 0x0010 Use legacy advertising PDUs: ADV_NONCONN_IND Min advertising interval: 1280.000 msec (0x0800) Max advertising interval: 1280.000 msec (0x0800) Channel map: 37, 38, 39 (0x07) Own address type: Random (0x01) Peer address type: Public (0x00) Peer address: 00:00:00:00:00:00 (OUI 00-00-00) Filter policy: Allow Scan Request from Any, Allow Connect Request from Any (0x00) TX power: 127 dbm (0x7f) Primary PHY: LE 1M (0x01) Secondary max skip: 0x00 Secondary PHY: LE 1M (0x01) SID: 0x00 Scan request notifications: Disabled (0x00) > HCI Event: Command Complete (0x0e) plen 5 LE Set Extended Advertising Parameters (0x08|0x0036) ncmd 1 Status: Success (0x00) TX power (selected): 7 dbm (0x07) < HCI Command: LE Set Extended Advertising Enable (0x08|0x0039) plen 6 Extended advertising: Enabled (0x01) Number of sets: 1 (0x01) Entry 0 Handle: 0x00 Duration: 0 ms (0x00) Max ext adv events: 0 > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Advertising Enable (0x08|0x0039) ncmd 2 Status: Success (0x00) Signed-off-by: -
Jaganath Kanakkassery authored
This patch reads the number of advertising sets in the controller during init and save it in hdev. Signed-off-by:
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Jaganath Kanakkassery authored
Use the selected PHYs by Set PHY Configuration management command in extended create connection. Signed-off-by:
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Jaganath Kanakkassery authored
This patch defines the extended ADV types and handle it in ADV report. Signed-off-by:
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Jaganath Kanakkassery authored
Use the PHYs selected in Set Phy Configuration management command while scanning. < HCI Command: LE Set Extended Scan Parameters (0x08|0x0041) plen 13 Own address type: Random (0x01) Filter policy: Accept all advertisement (0x00) PHYs: 0x05 Entry 0: LE 1M Type: Active (0x01) Interval: 11.250 msec (0x0012) Window: 11.250 msec (0x0012) Entry 1: LE Coded Type: Active (0x01) Interval: 11.250 msec (0x0012) Window: 11.250 msec (0x0012) > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Scan Parameters (0x08|0x0041) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Extended Scan Enable (0x08|0x0042) plen 6 Extended scan: Enabled (0x01) Filter duplicates: Enabled (0x01) Duration: 0 msec (0x0000) Period: 0.00 sec (0x0000) > HCI Event: Command Complete (0x0e) plen 4 LE Set Extended Scan Enable (0x08|0x0042) ncmd 2 Status: Success (0x00) Signed-off-by: -
Jaganath Kanakkassery authored
This defines and implement phy changed event and send it to user whenever selected PHYs changes using SET_PHY_CONFIGURATION. This will be also trigerred when BREDR pkt_type is changed using the legacy ioctl HCISETPTYPE. @ MGMT Command: Set PHY Configuration (0x0045) plen 4 Selected PHYs: 0x7fff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX LE 2M TX LE 2M RX LE CODED TX LE CODED RX < HCI Command: LE Set Default PHY (0x08|0x0031) plen 3 All PHYs preference: 0x00 TX PHYs preference: 0x07 LE 1M LE 2M LE Coded RX PHYs preference: 0x07 LE 1M LE 2M LE Coded > HCI Event: Command Complete (0x0e) plen 4 LE Set Default PHY (0x08|0x0031) ncmd 1 Status: Success (0x00) @ MGMT Event: Command Complete (0x0001) plen 3 Set PHY Configuration (0x0045) plen 0 Status: Success (0x00) @ MGMT Event: PHY Configuration Changed (0x0026) plen 4 Selected PHYs: 0x7fff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX LE 2M TX LE 2M RX LE CODED TX LE CODED RX Signed-off-by:
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Jaganath Kanakkassery authored
This enables user to set phys which will be used in all subsequent connections. Also host will use the same in LE scanning as well. @ MGMT Command: Set PHY Configuration (0x0045) plen 4 Selected PHYs: 0x7fff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX LE 2M TX LE 2M RX LE CODED TX LE CODED RX < HCI Command: LE Set Default PHY (0x08|0x0031) plen 3 All PHYs preference: 0x00 TX PHYs preference: 0x07 LE 1M LE 2M LE Coded RX PHYs preference: 0x07 LE 1M LE 2M LE Coded > HCI Event: Command Complete (0x0e) plen 4 LE Set Default PHY (0x08|0x0031) ncmd 1 Status: Success (0x00) @ MGMT Event: Command Complete (0x0001) plen 3 Set PHY Configuration (0x0045) plen 0 Status: Success (0x00) @ MGMT Event: PHY Configuration Changed (0x0026) plen 4 Selected PHYs: 0x7fff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX LE 2M TX LE 2M RX LE CODED TX LE CODED RX Signed-off-by: -
Jaganath Kanakkassery authored
This commands basically retrieve the supported packet types of BREDR and supported PHYs of the controller. BR_1M_1SLOT, LE_1M_TX and LE_1M_RX would be supported by default. Other PHYs are supported based on the local features. Also this sets PHY_CONFIGURATION bit in supported settings. @ MGMT Command: Get PHY Configuration (0x0044) plen 0 @ MGMT Event: Command Complete (0x0001) plen 15 Get PHY Configuration (0x0044) plen 12 Status: Success (0x00) Supported PHYs: 0x7fff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX LE 2M TX LE 2M RX LE CODED TX LE CODED RX Configurable PHYs: 0x79fe BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 2M TX LE 2M RX LE CODED TX LE CODED RX Selected PHYs: 0x07ff BR 1M 1SLOT BR 1M 3SLOT BR 1M 5SLOT EDR 2M 1SLOT EDR 2M 3SLOT EDR 2M 5SLOT EDR 3M 1SLOT EDR 3M 3SLOT EDR 3M 5SLOT LE 1M TX LE 1M RX Signed-off-by: -
Jaganath Kanakkassery authored
This also add macros for checking LMP support for different pkt_types Signed-off-by:
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Jaganath Kanakkassery authored
1M is mandatory to be supported by LE controllers and the same would be set in power on. This patch defines hdev flags for LE PHYs and set 1M to default. Signed-off-by:
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- 23 Jul, 2018 7 commits
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Jia-Ju Bai authored
qca_open() and qca_set_baudrate() are never called in atomic context. They call kzalloc() and bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
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Jia-Ju Bai authored
inject_cmd_complete() is only called by intel_dequeue(), which is never called in atomic context. inject_cmd_complete() calls bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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Jia-Ju Bai authored
inject_cmd_complete() is only called by btusb_send_frame_intel(), which is set to hdev->send, and hdev->send() is never called in atomic context. inject_cmd_complete() calls bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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Jia-Ju Bai authored
btmrvl_sdio_card_to_host() is never called in atomic context. It calls bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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Jia-Ju Bai authored
bpa10x_send_frame() is only set to hdev->send, and hdev->send() is never called in atomic context. bpa10x_send_frame() calls usb_alloc_urb(), kmalloc() and usb_submit_urb() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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Jia-Ju Bai authored
bluecard_hci_set_baud_rate() is never called in atomic context. bluecard_hci_set_baud_rate() is only by bluecard_hci_open(), which is set to hdev->open, and hdev->open() is never called in atomic context. bluecard_hci_set_baud_rate() calls bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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Jia-Ju Bai authored
bfusb_send_frame() is only set to hdev->send, and hdev->send() is never called in atomic context. bfusb_send_frame() calls bt_skb_alloc() with GFP_ATOMIC, which is not necessary. GFP_ATOMIC can be replaced with GFP_KERNEL. This is found by a static analysis tool named DCNS written by myself. I also manually check the kernel code before reporting it. Signed-off-by:
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- 18 Jul, 2018 1 commit
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Philipp Puschmann authored
Fixes this warning that was provoked by a pairing: [60258.016221] WARNING: possible recursive locking detected [60258.021558] 4.15.0-RD1812-BSP #1 Tainted: G O [60258.027146] -------------------------------------------- [60258.032464] kworker/u5:0/70 is trying to acquire lock: [60258.037609] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<87759073>] bt_accept_enqueue+0x3c/0x74 [60258.046863] [60258.046863] but task is already holding lock: [60258.052704] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<d22d7106>] l2cap_sock_new_connection_cb+0x1c/0x88 [60258.062905] [60258.062905] other info that might help us debug this: [60258.069441] Possible unsafe locking scenario: [60258.069441] [60258.075368] CPU0 [60258.077821] ---- [60258.080272] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [60258.085510] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [60258.090748] [60258.090748] *** DEADLOCK *** [60258.090748] [60258.096676] May be due to missing lock nesting notation [60258.096676] [60258.103472] 5 locks held by kworker/u5:0/70: [60258.107747] #0: ((wq_completion)%shdev->name#2){+.+.}, at: [<9460d092>] process_one_work+0x130/0x4fc [60258.117263] #1: ((work_completion)(&hdev->rx_work)){+.+.}, at: [<9460d092>] process_one_work+0x130/0x4fc [60258.126942] #2: (&conn->chan_lock){+.+.}, at: [<7877c8c3>] l2cap_connect+0x80/0x4f8 [60258.134806] #3: (&chan->lock/2){+.+.}, at: [<2e16c724>] l2cap_connect+0x8c/0x4f8 [60258.142410] #4: (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<d22d7106>] l2cap_sock_new_connection_cb+0x1c/0x88 [60258.153043] [60258.153043] stack backtrace: [60258.157413] CPU: 1 PID: 70 Comm: kworker/u5:0 Tainted: G O 4.15.0-RD1812-BSP #1 [60258.165945] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [60258.172485] Workqueue: hci0 hci_rx_work [60258.176331] Backtrace: [60258.178797] [<8010c9fc>] (dump_backtrace) from [<8010ccbc>] (show_stack+0x18/0x1c) [60258.186379] r7:80e55fe4 r6:80e55fe4 r5:20050093 r4:00000000 [60258.192058] [<8010cca4>] (show_stack) from [<809864e8>] (dump_stack+0xb0/0xdc) [60258.199301] [<80986438>] (dump_stack) from [<8016ecc8>] (__lock_acquire+0xffc/0x11d4) [60258.207144] r9:5e2bb019 r8:630f974c r7:ba8a5940 r6:ba8a5ed8 r5:815b5220 r4:80fa081c [60258.214901] [<8016dccc>] (__lock_acquire) from [<8016f620>] (lock_acquire+0x78/0x98) [60258.222655] r10:00000040 r9:00000040 r8:808729f0 r7:00000001 r6:00000000 r5:60050013 [60258.230491] r4:00000000 [60258.233045] [<8016f5a8>] (lock_acquire) from [<806ee974>] (lock_sock_nested+0x64/0x88) [60258.240970] r7:00000000 r6:b796e870 r5:00000001 r4:b796e800 [60258.246643] [<806ee910>] (lock_sock_nested) from [<808729f0>] (bt_accept_enqueue+0x3c/0x74) [60258.255004] r8:00000001 r7:ba7d3c00 r6:ba7d3ea4 r5:ba7d2000 r4:b796e800 [60258.261717] [<808729b4>] (bt_accept_enqueue) from [<808aa39c>] (l2cap_sock_new_connection_cb+0x68/0x88) [60258.271117] r5:b796e800 r4:ba7d2000 [60258.274708] [<808aa334>] (l2cap_sock_new_connection_cb) from [<808a294c>] (l2cap_connect+0x190/0x4f8) [60258.283933] r5:00000001 r4:ba6dce00 [60258.287524] [<808a27bc>] (l2cap_connect) from [<808a4a14>] (l2cap_recv_frame+0x744/0x2cf8) [60258.295800] r10:ba6dcf24 r9:00000004 r8:b78d8014 r7:00000004 r6:bb05d000 r5:00000004 [60258.303635] r4:bb05d008 [60258.306183] [<808a42d0>] (l2cap_recv_frame) from [<808a7808>] (l2cap_recv_acldata+0x210/0x214) [60258.314805] r10:b78e7800 r9:bb05d960 r8:00000001 r7:bb05d000 r6:0000000c r5:b7957a80 [60258.322641] r4:ba6dce00 [60258.325188] [<808a75f8>] (l2cap_recv_acldata) from [<8087630c>] (hci_rx_work+0x35c/0x4e8) [60258.333374] r6:80e5743c r5:bb05d7c8 r4:b7957a80 [60258.338004] [<80875fb0>] (hci_rx_work) from [<8013dc7c>] (process_one_work+0x1a4/0x4fc) [60258.346018] r10:00000001 r9:00000000 r8:baabfef8 r7:ba997500 r6:baaba800 r5:baaa5d00 [60258.353853] r4:bb05d7c8 [60258.356401] [<8013dad8>] (process_one_work) from [<8013e028>] (worker_thread+0x54/0x5cc) [60258.364503] r10:baabe038 r9:baaba834 r8:80e05900 r7:00000088 r6:baaa5d18 r5:baaba800 [60258.372338] r4:baaa5d00 [60258.374888] [<8013dfd4>] (worker_thread) from [<801448f8>] (kthread+0x134/0x160) [60258.382295] r10:ba8310b8 r9:bb07dbfc r8:8013dfd4 r7:baaa5d00 r6:00000000 r5:baaa8ac0 [60258.390130] r4:ba831080 [60258.392682] [<801447c4>] (kthread) from [<801080b4>] (ret_from_fork+0x14/0x20) [60258.399915] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:801447c4 [60258.407751] r4:baaa8ac0 r3:baabe000 Signed-off-by:Philipp Puschmann <pp@emlix.com> Signed-off-by:
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- 16 Jul, 2018 1 commit
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Sudip Mukherjee authored
slub debug reported: [ 440.648642] ============================================================================= [ 440.648649] BUG kmalloc-1024 (Tainted: G BU O ): Poison overwritten [ 440.648651] ----------------------------------------------------------------------------- [ 440.648655] INFO: 0xe70f4bec-0xe70f4bec. First byte 0x6a instead of 0x6b [ 440.648665] INFO: Allocated in sk_prot_alloc+0x6b/0xc6 age=33155 cpu=1 pid=1047 [ 440.648671] ___slab_alloc.constprop.24+0x1fc/0x292 [ 440.648675] __slab_alloc.isra.18.constprop.23+0x1c/0x25 [ 440.648677] __kmalloc+0xb6/0x17f [ 440.648680] sk_prot_alloc+0x6b/0xc6 [ 440.648683] sk_alloc+0x1e/0xa1 [ 440.648700] sco_sock_alloc.constprop.6+0x26/0xaf [bluetooth] [ 440.648716] sco_connect_cfm+0x166/0x281 [bluetooth] [ 440.648731] hci_conn_request_evt.isra.53+0x258/0x281 [bluetooth] [ 440.648746] hci_event_packet+0x28b/0x2326 [bluetooth] [ 440.648759] hci_rx_work+0x161/0x291 [bluetooth] [ 440.648764] process_one_work+0x163/0x2b2 [ 440.648767] worker_thread+0x1a9/0x25c [ 440.648770] kthread+0xf8/0xfd [ 440.648774] ret_from_fork+0x2e/0x38 [ 440.648779] INFO: Freed in __sk_destruct+0xd3/0xdf age=3815 cpu=1 pid=1047 [ 440.648782] __slab_free+0x4b/0x27a [ 440.648784] kfree+0x12e/0x155 [ 440.648787] __sk_destruct+0xd3/0xdf [ 440.648790] sk_destruct+0x27/0x29 [ 440.648793] __sk_free+0x75/0x91 [ 440.648795] sk_free+0x1c/0x1e [ 440.648810] sco_sock_kill+0x5a/0x5f [bluetooth] [ 440.648825] sco_conn_del+0x8e/0xba [bluetooth] [ 440.648840] sco_disconn_cfm+0x3a/0x41 [bluetooth] [ 440.648855] hci_event_packet+0x45e/0x2326 [bluetooth] [ 440.648868] hci_rx_work+0x161/0x291 [bluetooth] [ 440.648872] process_one_work+0x163/0x2b2 [ 440.648875] worker_thread+0x1a9/0x25c [ 440.648877] kthread+0xf8/0xfd [ 440.648880] ret_from_fork+0x2e/0x38 [ 440.648884] INFO: Slab 0xf4718580 objects=27 used=27 fp=0x (null) flags=0x40008100 [ 440.648886] INFO: Object 0xe70f4b88 @offset=19336 fp=0xe70f54f8 When KASAN was enabled, it reported: [ 210.096613] ================================================================== [ 210.096634] BUG: KASAN: use-after-free in ex_handler_refcount+0x5b/0x127 [ 210.096641] Write of size 4 at addr ffff880107e17160 by task kworker/u9:1/2040 [ 210.096651] CPU: 1 PID: 2040 Comm: kworker/u9:1 Tainted: G U O 4.14.47-20180606+ #2 [ 210.096654] Hardware name: , BIOS 2017.01-00087-g43e04de 08/30/2017 [ 210.096693] Workqueue: hci0 hci_rx_work [bluetooth] [ 210.096698] Call Trace: [ 210.096711] dump_stack+0x46/0x59 [ 210.096722] print_address_description+0x6b/0x23b [ 210.096729] ? ex_handler_refcount+0x5b/0x127 [ 210.096736] kasan_report+0x220/0x246 [ 210.096744] ex_handler_refcount+0x5b/0x127 [ 210.096751] ? ex_handler_clear_fs+0x85/0x85 [ 210.096757] fixup_exception+0x8c/0x96 [ 210.096766] do_trap+0x66/0x2c1 [ 210.096773] do_error_trap+0x152/0x180 [ 210.096781] ? fixup_bug+0x78/0x78 [ 210.096817] ? hci_debugfs_create_conn+0x244/0x26a [bluetooth] [ 210.096824] ? __schedule+0x113b/0x1453 [ 210.096830] ? sysctl_net_exit+0xe/0xe [ 210.096837] ? __wake_up_common+0x343/0x343 [ 210.096843] ? insert_work+0x107/0x163 [ 210.096850] invalid_op+0x1b/0x40 [ 210.096888] RIP: 0010:hci_debugfs_create_conn+0x244/0x26a [bluetooth] [ 210.096892] RSP: 0018:ffff880094a0f970 EFLAGS: 00010296 [ 210.096898] RAX: 0000000000000000 RBX: ffff880107e170e8 RCX: ffff880107e17160 [ 210.096902] RDX: 000000000000002f RSI: ffff88013b80ed40 RDI: ffffffffa058b940 [ 210.096906] RBP: ffff88011b2b0578 R08: 00000000852f0ec9 R09: ffffffff81cfcf9b [ 210.096909] R10: 00000000d21bdad7 R11: 0000000000000001 R12: ffff8800967b0488 [ 210.096913] R13: ffff880107e17168 R14: 0000000000000068 R15: ffff8800949c0008 [ 210.096920] ? __sk_destruct+0x2c6/0x2d4 [ 210.096959] hci_event_packet+0xff5/0x7de2 [bluetooth] [ 210.096969] ? __local_bh_enable_ip+0x43/0x5b [ 210.097004] ? l2cap_sock_recv_cb+0x158/0x166 [bluetooth] [ 210.097039] ? hci_le_meta_evt+0x2bb3/0x2bb3 [bluetooth] [ 210.097075] ? l2cap_ertm_init+0x94e/0x94e [bluetooth] [ 210.097093] ? xhci_urb_enqueue+0xbd8/0xcf5 [xhci_hcd] [ 210.097102] ? __accumulate_pelt_segments+0x24/0x33 [ 210.097109] ? __accumulate_pelt_segments+0x24/0x33 [ 210.097115] ? __update_load_avg_se.isra.2+0x217/0x3a4 [ 210.097122] ? set_next_entity+0x7c3/0x12cd [ 210.097128] ? pick_next_entity+0x25e/0x26c [ 210.097135] ? pick_next_task_fair+0x2ca/0xc1a [ 210.097141] ? switch_mm_irqs_off+0x346/0xb4f [ 210.097147] ? __switch_to+0x769/0xbc4 [ 210.097153] ? compat_start_thread+0x66/0x66 [ 210.097188] ? hci_conn_check_link_mode+0x1cd/0x1cd [bluetooth] [ 210.097195] ? finish_task_switch+0x392/0x431 [ 210.097228] ? hci_rx_work+0x154/0x487 [bluetooth] [ 210.097260] hci_rx_work+0x154/0x487 [bluetooth] [ 210.097269] process_one_work+0x579/0x9e9 [ 210.097277] worker_thread+0x68f/0x804 [ 210.097285] kthread+0x31c/0x32b [ 210.097292] ? rescuer_thread+0x70c/0x70c [ 210.097299] ? kthread_create_on_node+0xa3/0xa3 [ 210.097306] ret_from_fork+0x35/0x40 [ 210.097314] Allocated by task 2040: [ 210.097323] kasan_kmalloc.part.1+0x51/0xc7 [ 210.097328] __kmalloc+0x17f/0x1b6 [ 210.097335] sk_prot_alloc+0xf2/0x1a3 [ 210.097340] sk_alloc+0x22/0x297 [ 210.097375] sco_sock_alloc.constprop.7+0x23/0x202 [bluetooth] [ 210.097410] sco_connect_cfm+0x2d0/0x566 [bluetooth] [ 210.097443] hci_conn_request_evt.isra.53+0x6d3/0x762 [bluetooth] [ 210.097476] hci_event_packet+0x85e/0x7de2 [bluetooth] [ 210.097507] hci_rx_work+0x154/0x487 [bluetooth] [ 210.097512] process_one_work+0x579/0x9e9 [ 210.097517] worker_thread+0x68f/0x804 [ 210.097523] kthread+0x31c/0x32b [ 210.097529] ret_from_fork+0x35/0x40 [ 210.097533] Freed by task 2040: [ 210.097539] kasan_slab_free+0xb3/0x15e [ 210.097544] kfree+0x103/0x1a9 [ 210.097549] __sk_destruct+0x2c6/0x2d4 [ 210.097584] sco_conn_del.isra.1+0xba/0x10e [bluetooth] [ 210.097617] hci_event_packet+0xff5/0x7de2 [bluetooth] [ 210.097648] hci_rx_work+0x154/0x487 [bluetooth] [ 210.097653] process_one_work+0x579/0x9e9 [ 210.097658] worker_thread+0x68f/0x804 [ 210.097663] kthread+0x31c/0x32b [ 210.097670] ret_from_fork+0x35/0x40 [ 210.097676] The buggy address belongs to the object at ffff880107e170e8 which belongs to the cache kmalloc-1024 of size 1024 [ 210.097681] The buggy address is located 120 bytes inside of 1024-byte region [ffff880107e170e8, ffff880107e174e8) [ 210.097683] The buggy address belongs to the page: [ 210.097689] page:ffffea00041f8400 count:1 mapcount:0 mapping: (null) index:0xffff880107e15b68 compound_mapcount: 0 [ 210.110194] flags: 0x8000000000008100(slab|head) [ 210.115441] raw: 8000000000008100 0000000000000000 ffff880107e15b68 0000000100170016 [ 210.115448] raw: ffffea0004a47620 ffffea0004b48e20 ffff88013b80ed40 0000000000000000 [ 210.115451] page dumped because: kasan: bad access detected [ 210.115454] Memory state around the buggy address: [ 210.115460] ffff880107e17000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 210.115465] ffff880107e17080: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb [ 210.115469] >ffff880107e17100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 210.115472] ^ [ 210.115477] ffff880107e17180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 210.115481] ffff880107e17200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 210.115483] ================================================================== And finally when BT_DBG() and ftrace was enabled it showed: <...>-14979 [001] .... 186.104191: sco_sock_kill <-sco_sock_close <...>-14979 [001] .... 186.104191: sco_sock_kill <-sco_sock_release <...>-14979 [001] .... 186.104192: sco_sock_kill: sk ef0497a0 state 9 <...>-14979 [001] .... 186.104193: bt_sock_unlink <-sco_sock_kill kworker/u9:2-792 [001] .... 186.104246: sco_sock_kill <-sco_conn_del kworker/u9:2-792 [001] .... 186.104248: sco_sock_kill: sk ef0497a0 state 9 kworker/u9:2-792 [001] .... 186.104249: bt_sock_unlink <-sco_sock_kill kworker/u9:2-792 [001] .... 186.104250: sco_sock_destruct <-__sk_destruct kworker/u9:2-792 [001] .... 186.104250: sco_sock_destruct: sk ef0497a0 kworker/u9:2-792 [001] .... 186.104860: hci_conn_del <-hci_event_packet kworker/u9:2-792 [001] .... 186.104864: hci_conn_del: hci0 hcon ef0484c0 handle 266 Only in the failed case, sco_sock_kill() gets called with the same sock pointer two times. Add a check for SOCK_DEAD to avoid continue killing a socket which has already been killed. Signed-off-by:Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by:
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- 06 Jul, 2018 3 commits
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Jaganath Kanakkassery authored
This implements extended LE craete connection and enhanced LE conn complete event if the controller supports. For now it is as good as legacy LE connection and event as no new features in the extended connection is handled. < HCI Command: LE Extended Create Connection (0x08|0x0043) plen 26 Filter policy: White list is not used (0x00) Own address type: Public (0x00) Peer address type: Random (0x01) Peer address: DB:7E:2E:1D:85:E8 (Static) Initiating PHYs: 0x01 Entry 0: LE 1M Scan interval: 60.000 msec (0x0060) Scan window: 60.000 msec (0x0060) Min connection interval: 50.00 msec (0x0028) Max connection interval: 70.00 msec (0x0038) Connection latency: 0 (0x0000) Supervision timeout: 420 msec (0x002a) Min connection length: 0.000 msec (0x0000) Max connection length: 0.000 msec (0x0000) > HCI Event: Command Status (0x0f) plen 4 LE Extended Create Connection (0x08|0x0043) ncmd 2 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 31 LE Enhanced Connection Complete (0x0a) Status: Success (0x00) Handle: 3585 Role: Master (0x00) Peer address type: Random (0x01) Peer address: DB:7E:2E:1D:85:E8 (Static) Local resolvable private address: 00:00:00:00:00:00 (Non-Resolvable) Peer resolvable private address: 00:00:00:00:00:00 (Non-Resolvable) Connection interval: 67.50 msec (0x0036) Connection latency: 0 (0x0000) Supervision timeout: 420 msec (0x002a) Master clock accuracy: 0x00 @ MGMT Event: Device Connected (0x000b) plen 40 LE Address: DB:7E:2E:1D:85:E8 (Static) Flags: 0x00000000 Data length: 27 Name (complete): Designer Mouse Appearance: Mouse (0x03c2) Flags: 0x05 LE Limited Discoverable Mode BR/EDR Not Supported 16-bit Service UUIDs (complete): 1 entry Human Interface Device (0x1812) Signed-off-by: -
Jaganath Kanakkassery authored
This is done so that the helpers can be used for extended conn implementation which will be done in subsequent patch. Signed-off-by:
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Jaganath Kanakkassery authored
This patch enables Extended ADV report event if extended scanning is supported in the controller and process the same. The new features are not handled and for now its as good as legacy ADV report. > HCI Event: LE Meta Event (0x3e) plen 53 LE Extended Advertising Report (0x0d) Num reports: 1 Entry 0 Event type: 0x0013 Props: 0x0013 Connectable Scannable Use legacy advertising PDUs Data status: Complete Legacy PDU Type: ADV_IND (0x0013) Address type: Random (0x01) Address: DB:7E:2E:1A:85:E8 (Static) Primary PHY: LE 1M Secondary PHY: LE 1M SID: 0x00 TX power: 0 dBm RSSI: -90 dBm (0xa6) Periodic advertising invteral: 0.00 msec (0x0000) Direct address type: Public (0x00) Direct address: 00:00:00:00:00:00 (OUI 00-00-00) Data length: 0x1b 0f 09 44 65 73 69 67 6e 65 72 20 4d 6f 75 73 65 ..Designer Mouse 03 19 c2 03 02 01 05 03 03 12 18 ........... Signed-off-by:
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