kernel/linux.git/include/net/bluetooth, branch v4.19.36

Bluetooth: Fix debugfs NULL pointer dereference

2019-04-20T07:16:01+00:00

[ Upstream commit 30d65e0804d58a03d1a8ea4e12c6fc07ed08218b ] Fix crash caused by NULL pointer dereference when debugfs functions le_max_key_read, le_max_key_size_write, le_min_key_size_read or le_min_key_size_write and Bluetooth adapter was powered off. Fix is to move max_key_size and min_key_size from smp_dev to hci_dev. At the same time they were renamed to le_max_key_size and le_min_key_size. BUG: unable to handle kernel NULL pointer dereference at 00000000000002e8 PGD 0 P4D 0 Oops: 0000 [#24] SMP PTI CPU: 2 PID: 6255 Comm: cat Tainted: G D OE 4.18.9-200.fc28.x86_64 #1 Hardware name: LENOVO 4286CTO/4286CTO, BIOS 8DET76WW (1.46 ) 06/21/2018 RIP: 0010:le_max_key_size_read+0x45/0xb0 [bluetooth] Code: 00 00 00 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 48 8b 87 c8 00 00 00 48 8d 7c 24 04 48 8b 80 48 0a 00 00 <48> 8b 80 e8 02 00 00 0f b6 48 52 e8 fb b6 b3 ed be 04 00 00 00 48 RSP: 0018:ffffab23c3ff3df0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007f0b4ca2e000 RCX: ffffab23c3ff3f08 RDX: ffffffffc0ddb033 RSI: 0000000000000004 RDI: ffffab23c3ff3df4 RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffab23c3ff3ed8 R11: 0000000000000000 R12: ffffab23c3ff3f08 R13: 00007f0b4ca2e000 R14: 0000000000020000 R15: ffffab23c3ff3f08 FS: 00007f0b4ca0f540(0000) GS:ffff91bd5e280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000002e8 CR3: 00000000629fa006 CR4: 00000000000606e0 Call Trace: full_proxy_read+0x53/0x80 __vfs_read+0x36/0x180 vfs_read+0x8a/0x140 ksys_read+0x4f/0xb0 do_syscall_64+0x5b/0x160 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Signed-off-by: Matias Karhumaa Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin

Bluetooth: Fix locking in bt_accept_enqueue() for BH context

2019-03-10T06:17:21+00:00

commit c4f5627f7eeecde1bb6b646d8c0907b96dc2b2a6 upstream. With commit e16337622016 ("Bluetooth: Handle bt_accept_enqueue() socket atomically") lock_sock[_nested]() is used to acquire the socket lock before manipulating the socket. lock_sock[_nested]() may block, which is problematic since bt_accept_enqueue() can be called in bottom half context (e.g. from rfcomm_connect_ind()): [] __might_sleep+0x4c/0x80 [] lock_sock_nested+0x24/0x58 [] bt_accept_enqueue+0x48/0xd4 [bluetooth] [] rfcomm_connect_ind+0x190/0x218 [rfcomm] Add a parameter to bt_accept_enqueue() to indicate whether the function is called from BH context, and acquire the socket lock with bh_lock_sock_nested() if that's the case. Also adapt all callers of bt_accept_enqueue() to pass the new parameter: - l2cap_sock_new_connection_cb() - uses lock_sock() to lock the parent socket => process context - rfcomm_connect_ind() - acquires the parent socket lock with bh_lock_sock() => BH context - __sco_chan_add() - called from sco_chan_add(), which is called from sco_connect(). parent is NULL, hence bt_accept_enqueue() isn't called in this code path and we can ignore it - also called from sco_conn_ready(). uses bh_lock_sock() to acquire the parent lock => BH context Fixes: e16337622016 ("Bluetooth: Handle bt_accept_enqueue() socket atomically") Signed-off-by: Matthias Kaehlcke Reviewed-by: Douglas Anderson Signed-off-by: Marcel Holtmann Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

Bluetooth: Add definitions for LE set address resolution

2018-08-10T14:57:57+00:00

Add the definitions for LE address resolution enable HCI commands. When the LE address resolution enable gets changed via HCI commands make sure that flag gets updated. Signed-off-by: Ankit Navik Signed-off-by: Marcel Holtmann

Bluetooth: btqca: Introduce HCI_EV_VENDOR and use it

2018-08-06T18:25:05+00:00

Using HCI_VENDOR_PKT for vendor specific events does work since it has also the value 0xff, but it is actually the packet type indicator constant and not the event constant. So introduce HCI_EV_VENDOR and use it. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg

Bluetooth: Add new quirk for non-persistent setup settings

2018-07-30T12:00:15+00:00

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 Signed-off-by: Marcel Holtmann

Bluetooth: Implement secondary advertising on different PHYs

2018-07-30T11:44:53+00:00

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 Signed-off-by: Marcel Holtmann

Bluetooth: Handle ADv set terminated event

2018-07-30T11:44:53+00:00

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: Jaganath Kanakkassery Signed-off-by: Marcel Holtmann

Bluetooth: Implement Set ADV set random address

2018-07-30T11:44:53+00:00

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 Signed-off-by: Marcel Holtmann

Bluetooth: Implement disable and removal of adv instance

2018-07-30T11:44:53+00:00

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 Signed-off-by: Marcel Holtmann

Bluetooth: Use Set ext adv/scan rsp data if controller supports

2018-07-30T11:44:52+00:00

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 Signed-off-by: Marcel Holtmann