Herbert Xu [Fri, 31 Jul 2020 07:41:58 +0000 (17:41 +1000)]
Bluetooth: Remove CRYPTO_ALG_INTERNAL flag
The flag CRYPTO_ALG_INTERNAL is not meant to be used outside of
the Crypto API. It isn't needed here anyway.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 30 Jul 2020 17:40:11 +0000 (19:40 +0200)]
Bluetooth: Increment management interface revision
Increment the mgmt revision due to the recently added new commands.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Alain Michaud [Fri, 31 Jul 2020 01:05:34 +0000 (01:05 +0000)]
Bluetooth: use the proper scan params when conn is pending
When an LE connection is requested and an RPA update is needed via
hci_connect_le_scan, the default scanning parameters are used rather
than the connect parameters. This leads to significant delays in the
connection establishment process when using lower duty cycle scanning
parameters.
The patch simply looks at the pended connection list when trying to
determine which scanning parameters should be used.
Before:
< HCI Command: LE Set Extended Scan Parameters (0x08|0x0041) plen 8
#378 [hci0] 1659.247156
Own address type: Public (0x00)
Filter policy: Ignore not in white list (0x01)
PHYs: 0x01
Entry 0: LE 1M
Type: Passive (0x00)
Interval: 367.500 msec (0x024c)
Window: 37.500 msec (0x003c)
After:
< HCI Command: LE Set Extended Scan Parameters (0x08|0x0041) plen 8
#39 [hci0] 7.422109
Own address type: Public (0x00)
Filter policy: Ignore not in white list (0x01)
PHYs: 0x01
Entry 0: LE 1M
Type: Passive (0x00)
Interval: 60.000 msec (0x0060)
Window: 60.000 msec (0x0060)
Signed-off-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Yu Liu <yudiliu@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Wed, 29 Jul 2020 23:17:43 +0000 (16:17 -0700)]
Revert "Bluetooth: btusb: Disable runtime suspend on Realtek devices"
This reverts commit
7ecacafc240638148567742cca41aa7144b4fe1e.
Testing this change on a board with RTL8822CE, I found that enabling
autosuspend has no effect on the stability of the system. The board
continued working after autosuspend, suspend and reboot.
The original commit makes it impossible to enable autosuspend on working
systems so it should be reverted. Disabling autosuspend should be done
via module param or udev in userspace instead.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sathish Narasimman [Thu, 23 Jul 2020 12:39:03 +0000 (18:09 +0530)]
Bluetooth: Enable controller RPA resolution using Experimental feature
This patch adds support to enable the use of RPA Address resolution
using expermental feature mgmt command.
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sathish Narasimman [Thu, 23 Jul 2020 12:39:02 +0000 (18:09 +0530)]
Bluetooth: Enable RPA Timeout
Enable RPA timeout during bluetooth initialization.
The RPA timeout value is used from hdev, which initialized from
debug_fs
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sathish Narasimman [Thu, 23 Jul 2020 12:39:01 +0000 (18:09 +0530)]
Bluetooth: Enable/Disable address resolution during le create conn
In this patch if le_create_conn process is started restrict to
disable address resolution and same is disabled during
le_enh_connection_complete
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sathish Narasimman [Thu, 23 Jul 2020 12:39:00 +0000 (18:09 +0530)]
Bluetooth: Let controller creates RPA during le create conn
When address resolution is enabled and set_privacy is enabled let's
use own address type as 0x03
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sathish Narasimman [Thu, 23 Jul 2020 12:38:59 +0000 (18:08 +0530)]
Bluetooth: Translate additional address type during le_conn
When using controller based address resolution, then the new address
types 0x02 and 0x03 are used. These types need to be converted back into
either public address or random address types.
This patch is specially during LE_CREATE_CONN if using own_add_type as 0x02
or 0x03.
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Thu, 23 Jul 2020 12:38:58 +0000 (18:08 +0530)]
Bluetooth: Update resolving list when updating whitelist
When the whitelist is updated, then also update the entries of the
resolving list for devices where IRKs are available.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Thu, 23 Jul 2020 12:38:57 +0000 (18:08 +0530)]
Bluetooth: Configure controller address resolution if available
When the LL Privacy support is available, then as part of enabling or
disabling passive background scanning, it is required to set up the
controller based address resolution as well.
Since only passive background scanning is utilizing the whitelist, the
address resolution is now bound to the whitelist and passive background
scanning. All other resolution can be easily done by the host stack.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Thu, 23 Jul 2020 12:38:56 +0000 (18:08 +0530)]
Bluetooth: Translate additional address type correctly
When using controller based address resolution, then the new address
types 0x02 and 0x03 are used. These types need to be converted back into
either public address or random address types.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sathish Narsimman <sathish.narasimman@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Venkata Lakshmi Narayana Gubba [Tue, 28 Jul 2020 15:53:00 +0000 (21:23 +0530)]
Bluetooth: hci_qca: Stop collecting memdump again for command timeout during SSR
Setting memdump state to idle prior to setting of callback function
pointer for command timeout to NULL,causing the issue.Now moved the
initialisation of memdump state to qca_setup().
Fixes:
d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Tue, 28 Jul 2020 16:58:07 +0000 (09:58 -0700)]
Bluetooth: Fix suspend notifier race
Unregister from suspend notifications and cancel suspend preparations
before running hci_dev_do_close. Otherwise, the suspend notifier may
race with unregister and cause cmd_timeout even after hdev has been
freed.
Below is the trace from when this panic was seen:
[ 832.578518] Bluetooth: hci_core.c:hci_cmd_timeout() hci0: command 0x0c05 tx timeout
[ 832.586200] BUG: kernel NULL pointer dereference, address:
0000000000000000
[ 832.586203] #PF: supervisor read access in kernel mode
[ 832.586205] #PF: error_code(0x0000) - not-present page
[ 832.586206] PGD 0 P4D 0
[ 832.586210] PM: suspend exit
[ 832.608870] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 832.613232] CPU: 3 PID: 10755 Comm: kworker/3:7 Not tainted 5.4.44-04894-g1e9dbb96a161 #1
[ 832.630036] Workqueue: events hci_cmd_timeout [bluetooth]
[ 832.630046] RIP: 0010:__queue_work+0xf0/0x374
[ 832.630051] RSP: 0018:
ffff9b5285f1fdf8 EFLAGS:
00010046
[ 832.674033] RAX:
ffff8a97681bac00 RBX:
0000000000000000 RCX:
ffff8a976a000600
[ 832.681162] RDX:
0000000000000000 RSI:
0000000000000009 RDI:
ffff8a976a000748
[ 832.688289] RBP:
ffff9b5285f1fe38 R08:
0000000000000000 R09:
ffff8a97681bac00
[ 832.695418] R10:
0000000000000002 R11:
ffff8a976a0006d8 R12:
ffff8a9745107600
[ 832.698045] usb 1-6: new full-speed USB device number 119 using xhci_hcd
[ 832.702547] R13:
ffff8a9673658850 R14:
0000000000000040 R15:
000000000000001e
[ 832.702549] FS:
0000000000000000(0000) GS:
ffff8a976af80000(0000) knlGS:
0000000000000000
[ 832.702550] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 832.702550] CR2:
0000000000000000 CR3:
000000010415a000 CR4:
00000000003406e0
[ 832.702551] Call Trace:
[ 832.702558] queue_work_on+0x3f/0x68
[ 832.702562] process_one_work+0x1db/0x396
[ 832.747397] worker_thread+0x216/0x375
[ 832.751147] kthread+0x138/0x140
[ 832.754377] ? pr_cont_work+0x58/0x58
[ 832.758037] ? kthread_blkcg+0x2e/0x2e
[ 832.761787] ret_from_fork+0x22/0x40
[ 832.846191] ---[ end trace
fa93f466da517212 ]---
Fixes:
9952d90ea2885 ("Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND")
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Nicolas Boichat [Tue, 21 Jul 2020 02:37:16 +0000 (10:37 +0800)]
Bluetooth: hci_serdev: Only unregister device if it was registered
We should not call hci_unregister_dev if the device was not
successfully registered.
Fixes:
c34dc3bfa7642fd ("Bluetooth: hci_serdev: Introduce hci_uart_unregister_device()")
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Max Chou [Thu, 23 Jul 2020 10:47:42 +0000 (18:47 +0800)]
Bluetooth: Return NOTIFY_DONE for hci_suspend_notifier
The original return is NOTIFY_STOP, but notifier_call_chain would stop
the future call for register_pm_notifier even registered on other Kernel
modules with the same priority which value is zero.
Signed-off-by: Max Chou <max.chou@realtek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Nicolas Boichat [Tue, 21 Jul 2020 02:37:15 +0000 (10:37 +0800)]
Bluetooth: hci_h5: Set HCI_UART_RESET_ON_INIT to correct flags
HCI_UART_RESET_ON_INIT belongs in hdev_flags, not flags.
Fixes:
ce945552fde4a09 ("Bluetooth: hci_h5: Add support for serdev enumerated devices")
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Ismael Ferreras Morezuelas [Sun, 26 Jul 2020 21:12:28 +0000 (23:12 +0200)]
Bluetooth: btusb: Fix and detect most of the Chinese Bluetooth controllers
For some reason they tend to squat on the very first CSR/
Cambridge Silicon Radio VID/PID instead of paying fees.
This is an extremely common problem; the issue goes as back as 2013
and these devices are only getting more popular, even rebranded by
reputable vendors and sold by retailers everywhere.
So, at this point in time there are hundreds of modern dongles reusing
the ID of what originally was an early Bluetooth 1.1 controller.
Linux is the only place where they don't work due to spotty checks
in our detection code. It only covered a minimum subset.
So what's the big idea? Take advantage of the fact that all CSR
chips report the same internal version as both the LMP sub-version and
HCI revision number. It always matches, couple that with the manufacturer
code, that rarely lies, and we now have a good idea of who is who.
Additionally, by compiling a list of user-reported HCI/lsusb dumps, and
searching around for legit CSR dongles in similar product ranges we can
find what CSR BlueCore firmware supported which Bluetooth versions.
That way we can narrow down ranges of fakes for each of them.
e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
support BT 1.1 only; so it's a dead giveaway when some
third-party BT 4.0 dongle reuses it.
So, to sum things up; there are multiple classes of fake controllers
reusing the same 0A12:0001 VID/PID. This has been broken for a while.
Known 'fake' bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
IC markings on 0x7558: FR3191AHAL 749H15143 (???)
https://bugzilla.kernel.org/show_bug.cgi?id=60824
Fixes:
81cac64ba258ae (Deal with USB devices that are faking CSR vendor)
Reported-by: Michał Wiśniewski <brylozketrzyn@gmail.com>
Tested-by: Mike Johnson <yuyuyak@gmail.com>
Tested-by: Ricardo Rodrigues <ekatonb@gmail.com>
Tested-by: M.Hanny Sabbagh <mhsabbagh@outlook.com>
Tested-by: Oussama BEN BRAHIM <b.brahim.oussama@gmail.com>
Tested-by: Ismael Ferreras Morezuelas <swyterzone@gmail.com>
Signed-off-by: Ismael Ferreras Morezuelas <swyterzone@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Patrick Steinhardt [Wed, 15 Jul 2020 17:43:33 +0000 (19:43 +0200)]
Bluetooth: Fix update of connection state in `hci_encrypt_cfm`
Starting with the upgrade to v5.8-rc3, I've noticed I wasn't able to
connect to my Bluetooth headset properly anymore. While connecting to
the device would eventually succeed, bluetoothd seemed to be confused
about the current connection state where the state was flapping hence
and forth. Bisecting this issue led to commit
3ca44c16b0dc (Bluetooth:
Consolidate encryption handling in hci_encrypt_cfm, 2020-05-19), which
refactored `hci_encrypt_cfm` to also handle updating the connection
state.
The commit in question changed the code to call `hci_connect_cfm` inside
`hci_encrypt_cfm` and to change the connection state. But with the
conversion, we now only update the connection state if a status was set
already. In fact, the reverse should be true: the status should be
updated if no status is yet set. So let's fix the isuse by reversing the
condition.
Fixes:
3ca44c16b0dc ("Bluetooth: Consolidate encryption handling in hci_encrypt_cfm")
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Acked-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Daniel Winkler [Tue, 14 Jul 2020 21:16:00 +0000 (14:16 -0700)]
Bluetooth: Add per-instance adv disable/remove
Add functionality to disable and remove advertising instances,
and use that functionality in MGMT add/remove advertising calls.
Currently, advertising is globally-disabled, i.e. all instances are
disabled together, even if hardware offloading is available. This
patch adds functionality to disable and remove individual adv
instances, solving two issues:
1. On new advertisement registration, a global disable was done, and
then only the new instance was enabled. This meant only the newest
instance was actually enabled.
2. On advertisement removal, the structure was removed, but the instance
was never disabled or removed, which is incorrect with hardware offload
support.
Signed-off-by: Daniel Winkler <danielwinkler@google.com>
Reviewed-by: Shyh-In Hwang <josephsih@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Peilin Ye [Fri, 10 Jul 2020 21:45:26 +0000 (17:45 -0400)]
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_with_rssi_evt()
Check `num_rsp` before using it as for-loop counter. Add `unlock` label.
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Peilin Ye [Fri, 10 Jul 2020 21:39:18 +0000 (17:39 -0400)]
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt()
Check `num_rsp` before using it as for-loop counter.
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Venkata Lakshmi Narayana Gubba [Sat, 11 Jul 2020 11:31:12 +0000 (17:01 +0530)]
Bluetooth: hci_qca: Bug fixes for SSR
1.During SSR for command time out if BT SoC goes to inresponsive
state, power cycling of BT SoC was not happening. Given the fix by
sending hw error event to reset the BT SoC.
2.If SSR is triggered then ignore the transmit data requests to
BT SoC until SSR is completed.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Joseph Hwang [Mon, 13 Jul 2020 07:45:29 +0000 (15:45 +0800)]
Bluetooth: btusb: add Realtek 8822CE to usb_device_id table
This patch adds the Realtek 8822CE controller to the usb_device_id
table to support the wideband speech capability.
Signed-off-by: Joseph Hwang <josephsih@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander A. Klimov [Wed, 8 Jul 2020 13:36:38 +0000 (15:36 +0200)]
Replace HTTP links with HTTPS ones: BLUETOOTH SUBSYSTEM
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Gustavo A. R. Silva [Wed, 8 Jul 2020 20:26:50 +0000 (15:26 -0500)]
Bluetooth: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Gustavo A. R. Silva [Wed, 8 Jul 2020 20:25:05 +0000 (15:25 -0500)]
Bluetooth: RFCOMM: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1].
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Gustavo A. R. Silva [Wed, 8 Jul 2020 20:18:23 +0000 (15:18 -0500)]
Bluetooth: core: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Peilin Ye [Fri, 10 Jul 2020 16:09:15 +0000 (12:09 -0400)]
Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt()
Check upon `num_rsp` is insufficient. A malformed event packet with a
large `num_rsp` number makes hci_extended_inquiry_result_evt() go out
of bounds. Fix it.
This patch fixes the following syzbot bug:
https://syzkaller.appspot.com/bug?id=
4bf11aa05c4ca51ce0df86e500fce486552dc8d2
Reported-by: syzbot+d8489a79b781849b9c46@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Miao-chen Chou [Tue, 7 Jul 2020 22:52:28 +0000 (15:52 -0700)]
Bluetooth: Use whitelist for scan policy when suspending
Even with one advertisement monitor in place, the scan policy should use
the whitelist while the system is going to suspend to prevent waking by
random advertisement.
The following test was performed.
- With a paired device, register one advertisement monitor, suspend
the system and verify that the host was not awaken by random
advertisements.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Tue, 7 Jul 2020 15:46:06 +0000 (17:46 +0200)]
Bluetooth: le_simult_central_peripheral experimental feature
This patch adds an le_simult_central_peripheral features which allows a
clients to determine if the controller is able to support peripheral and
central connections separately and at the same time.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Miao-chen Chou [Tue, 30 Jun 2020 03:15:00 +0000 (20:15 -0700)]
Bluetooth: Fix kernel oops triggered by hci_adv_monitors_clear()
This fixes the kernel oops by removing unnecessary background scan
update from hci_adv_monitors_clear() which shouldn't invoke any work
queue.
The following test was performed.
- Run "rmmod btusb" and verify that no kernel oops is triggered.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Hilda Wu [Tue, 30 Jun 2020 13:09:40 +0000 (21:09 +0800)]
Bluetooth: btusb: USB alternate setting 1 for WBS
RTL8822CE supports transparent WBS to apply USB alternate setting 1.
Add a flag to the device match data to apply alternate setting 1 which
meet the transfer speed for WBS support.
Signed-off-by: Hilda Wu <hildawu@realtek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Mon, 29 Jun 2020 17:04:15 +0000 (17:04 +0000)]
Bluetooth: use configured default params for active scans
This patch fixes active scans to use the configured default parameters.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Mon, 29 Jun 2020 16:11:00 +0000 (16:11 +0000)]
Bluetooth: Adding a configurable autoconnect timeout
This patch adds a configurable LE autoconnect timeout.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Martin Blumenstingl [Mon, 29 Jun 2020 18:05:45 +0000 (20:05 +0200)]
dt-bindings: net: bluetooth: realtek: Fix uart-has-rtscts example
uart-has-rtscts is a boolean property. These are defined as present
(which means that this property evaluates to "true") or absent (which
means that this property evaluates to "false"). Remove the numeric value
from the example to make it comply with the boolean property bindings.
Fixes:
1cc2d0e021f867 ("dt-bindings: net: bluetooth: Add rtl8723bs-bluetooth")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Thu, 25 Jun 2020 23:26:27 +0000 (16:26 -0700)]
Bluetooth: btusb: Comment on unbalanced pm reference
Add a comment clarifying that a PM reference in btusb_qca_cmd_timeout is
not unbalanced because it results in a device reset.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Kiran K [Wed, 24 Jun 2020 18:34:32 +0000 (00:04 +0530)]
Bluetooth: btusb: Refactor of firmware download flow for Intel conrollers
Address the scalability to support new generation Intel controller with
respect to readability and enhancement to new firmware download sequence
Signed-off-by: Kiran K <kiran.k@intel.com>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Wed, 24 Jun 2020 18:34:19 +0000 (11:34 -0700)]
Bluetooth: Don't restart scanning if paused
When restarting LE scanning, check if it's currently paused before
enabling passive scanning.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Wed, 24 Jun 2020 18:24:30 +0000 (11:24 -0700)]
Bluetooth: btusb: BTUSB_WAKEUP_DISABLE prevents wake
When the BTUSB_WAKEUP_DISABLE flag is set, always return true for
prevent wake. This tells the suspend notifier not to prepare the
controller for reconnections during suspend.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Wed, 24 Jun 2020 18:11:44 +0000 (11:11 -0700)]
Bluetooth: btusb: Reset port on cmd timeout
QCA_ROME sometimes gets into a state where it is unresponsive to
commands. Since it doesn't have support for a reset gpio, reset the usb
port when this occurs instead.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sean Wang [Fri, 19 Jun 2020 19:52:02 +0000 (19:52 +0000)]
Bluetooth: btmtksdio: fix up firmware download sequence
Data RAM on the device have to be powered on before starting to download
the firmware.
Fixes:
9aebfd4a2200 ("Bluetooth: mediatek: add support for MediaTek MT7663S and MT7668S SDIO devices")
Co-developed-by: Mark Chen <Mark-YW.Chen@mediatek.com>
Signed-off-by: Mark Chen <Mark-YW.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Sean Wang [Fri, 19 Jun 2020 19:52:01 +0000 (19:52 +0000)]
Bluetooth: btusb: fix up firmware download sequence
Data RAM on the device have to be powered on before starting to download
the firmware.
Fixes:
a1c49c434e15 ("Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices")
Co-developed-by: Mark Chen <Mark-YW.Chen@mediatek.com>
Signed-off-by: Mark Chen <Mark-YW.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Lihong Kou [Tue, 23 Jun 2020 12:28:41 +0000 (20:28 +0800)]
Bluetooth: add a mutex lock to avoid UAF in do_enale_set
In the case we set or free the global value listen_chan in
different threads, we can encounter the UAF problems because
the method is not protected by any lock, add one to avoid
this bug.
BUG: KASAN: use-after-free in l2cap_chan_close+0x48/0x990
net/bluetooth/l2cap_core.c:730
Read of size 8 at addr
ffff888096950000 by task kworker/1:102/2868
CPU: 1 PID: 2868 Comm: kworker/1:102 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine,
BIOS Google 01/01/2011
Workqueue: events do_enable_set
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fb/0x318 lib/dump_stack.c:118
print_address_description+0x74/0x5c0 mm/kasan/report.c:374
__kasan_report+0x149/0x1c0 mm/kasan/report.c:506
kasan_report+0x26/0x50 mm/kasan/common.c:641
__asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
l2cap_chan_close+0x48/0x990 net/bluetooth/l2cap_core.c:730
do_enable_set+0x660/0x900 net/bluetooth/6lowpan.c:1074
process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264
worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410
kthread+0x332/0x350 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Allocated by task 2870:
save_stack mm/kasan/common.c:72 [inline]
set_track mm/kasan/common.c:80 [inline]
__kasan_kmalloc+0x118/0x1c0 mm/kasan/common.c:515
kasan_kmalloc+0x9/0x10 mm/kasan/common.c:529
kmem_cache_alloc_trace+0x221/0x2f0 mm/slab.c:3551
kmalloc include/linux/slab.h:555 [inline]
kzalloc include/linux/slab.h:669 [inline]
l2cap_chan_create+0x50/0x320 net/bluetooth/l2cap_core.c:446
chan_create net/bluetooth/6lowpan.c:640 [inline]
bt_6lowpan_listen net/bluetooth/6lowpan.c:959 [inline]
do_enable_set+0x6a4/0x900 net/bluetooth/6lowpan.c:1078
process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264
worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410
kthread+0x332/0x350 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Freed by task 2870:
save_stack mm/kasan/common.c:72 [inline]
set_track mm/kasan/common.c:80 [inline]
kasan_set_free_info mm/kasan/common.c:337 [inline]
__kasan_slab_free+0x12e/0x1e0 mm/kasan/common.c:476
kasan_slab_free+0xe/0x10 mm/kasan/common.c:485
__cache_free mm/slab.c:3426 [inline]
kfree+0x10d/0x220 mm/slab.c:3757
l2cap_chan_destroy net/bluetooth/l2cap_core.c:484 [inline]
kref_put include/linux/kref.h:65 [inline]
l2cap_chan_put+0x170/0x190 net/bluetooth/l2cap_core.c:498
do_enable_set+0x66c/0x900 net/bluetooth/6lowpan.c:1075
process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264
worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410
kthread+0x332/0x350 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
The buggy address belongs to the object at
ffff888096950000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 0 bytes inside of
2048-byte region [
ffff888096950000,
ffff888096950800)
The buggy address belongs to the page:
page:
ffffea00025a5400 refcount:1 mapcount:0 mapping:
ffff8880aa400e00 index:0x0
flags: 0xfffe0000000200(slab)
raw:
00fffe0000000200 ffffea00027d1548 ffffea0002397808 ffff8880aa400e00
raw:
0000000000000000 ffff888096950000 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88809694ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88809694ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
ffff888096950000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888096950080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888096950100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Reported-by: syzbot+96414aa0033c363d8458@syzkaller.appspotmail.com
Signed-off-by: Lihong Kou <koulihong@huawei.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Luiz Augusto von Dentz [Wed, 20 May 2020 21:20:14 +0000 (14:20 -0700)]
Bluetooth: Disconnect if E0 is used for Level 4
E0 is not allowed with Level 4:
BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 3, Part C page 1319:
'128-bit equivalent strength for link and encryption keys
required using FIPS approved algorithms (E0 not allowed,
SAFER+ not allowed, and P-192 not allowed; encryption key
not shortened'
SC enabled:
> HCI Event: Read Remote Extended Features (0x23) plen 13
Status: Success (0x00)
Handle: 256
Page: 1/2
Features: 0x0b 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Secure Simple Pairing (Host Support)
LE Supported (Host)
Secure Connections (Host Support)
> HCI Event: Encryption Change (0x08) plen 4
Status: Success (0x00)
Handle: 256
Encryption: Enabled with AES-CCM (0x02)
SC disabled:
> HCI Event: Read Remote Extended Features (0x23) plen 13
Status: Success (0x00)
Handle: 256
Page: 1/2
Features: 0x03 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Secure Simple Pairing (Host Support)
LE Supported (Host)
> HCI Event: Encryption Change (0x08) plen 4
Status: Success (0x00)
Handle: 256
Encryption: Enabled with E0 (0x01)
[May 8 20:23] Bluetooth: hci0: Invalid security: expect AES but E0 was used
< HCI Command: Disconnect (0x01|0x0006) plen 3
Handle: 256
Reason: Authentication Failure (0x05)
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Mon, 22 Jun 2020 13:30:28 +0000 (13:30 +0000)]
Bluetooth: use configured params for ext adv
When the extended advertisement feature is enabled, a hardcoded min and
max interval of 0x8000 is used. This patch fixes this issue by using
the configured min/max value.
This was validated by setting min/max in main.conf and making sure the
right setting is applied:
< HCI Command: LE Set Extended Advertising Parameters (0x08|0x0036) plen
25 #93 [hci0] 10.953011
…
Min advertising interval: 181.250 msec (0x0122)
Max advertising interval: 181.250 msec (0x0122)
…
Signed-off-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Daniel Winkler <danielwinkler@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Sat, 20 Jun 2020 00:10:24 +0000 (17:10 -0700)]
Bluetooth: Add hci_dev_lock to get/set device flags
Adding hci_dev_lock since hci_conn_params_(lookup|add) require this
lock.
Suggested-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Wed, 17 Jun 2020 14:39:20 +0000 (16:39 +0200)]
Bluetooth: mgmt: Use command complete on success for set system config
The command status reply is only for failure. When completing set system
config command, the reply has to be command complete.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Manish Mandlik [Wed, 17 Jun 2020 14:39:19 +0000 (16:39 +0200)]
Bluetooth: Terminate the link if pairing is cancelled
If user decides to cancel the ongoing pairing process (e.g. by clicking
the cancel button on pairing/passkey window), abort any ongoing pairing
and then terminate the link if it was created because of the pair
device action.
Signed-off-by: Manish Mandlik <mmandlik@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:18 +0000 (16:39 +0200)]
Bluetooth: Update background scan and report device based on advertisement monitors
This calls hci_update_background_scan() when there is any update on the
advertisement monitors. If there is at least one advertisement monitor,
the filtering policy of scan parameters should be 0x00. This also reports
device found mgmt events if there is at least one monitor.
The following cases were tested with btmgmt advmon-* commands.
(1) add a ADV monitor and observe that the passive scanning is
triggered.
(2) remove the last ADV monitor and observe that the passive scanning is
terminated.
(3) with a LE peripheral paired, repeat (1) and observe the passive
scanning continues.
(4) with a LE peripheral paired, repeat (2) and observe the passive
scanning continues.
(5) with a ADV monitor, suspend/resume the host and observe the passive
scanning continues.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:17 +0000 (16:39 +0200)]
Bluetooth: Notify adv monitor removed event
This notifies management sockets on MGMT_EV_ADV_MONITOR_REMOVED event.
The following test was performed.
- Start two btmgmt consoles, issue a btmgmt advmon-remove command on one
console and observe a MGMT_EV_ADV_MONITOR_REMOVED event on the other.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:16 +0000 (16:39 +0200)]
Bluetooth: Notify adv monitor added event
This notifies management sockets on MGMT_EV_ADV_MONITOR_ADDED event.
The following test was performed.
- Start two btmgmt consoles, issue a btmgmt advmon-add command on one
console and observe a MGMT_EV_ADV_MONITOR_ADDED event on the other
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:15 +0000 (16:39 +0200)]
Bluetooth: Add handler of MGMT_OP_REMOVE_ADV_MONITOR
This adds the request handler of MGMT_OP_REMOVE_ADV_MONITOR command.
Note that the controller-based monitoring is not yet in place. This
removes the internal monitor(s) without sending HCI traffic, so the
request returns immediately.
The following test was performed.
- Issue btmgmt advmon-remove with valid and invalid handles.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:14 +0000 (16:39 +0200)]
Bluetooth: Add handler of MGMT_OP_ADD_ADV_PATTERNS_MONITOR
This adds the request handler of MGMT_OP_ADD_ADV_PATTERNS_MONITOR command.
Note that the controller-based monitoring is not yet in place. This tracks
the content of the monitor without sending HCI traffic, so the request
returns immediately.
The following manual test was performed.
- Issue btmgmt advmon-add with valid and invalid inputs.
- Issue btmgmt advmon-add more the allowed number of monitors.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:13 +0000 (16:39 +0200)]
Bluetooth: Add handler of MGMT_OP_READ_ADV_MONITOR_FEATURES
This adds the request handler of MGMT_OP_READ_ADV_MONITOR_FEATURES
command. Since the controller-based monitoring is not yet in place, this
report only the supported features but not the enabled features.
The following test was performed.
- Issuing btmgmt advmon-features.
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Miao-chen Chou [Wed, 17 Jun 2020 14:39:12 +0000 (16:39 +0200)]
Bluetooth: Add definitions for advertisement monitor features
This adds support for Advertisement Monitor API. Here are the commands
and events added.
- Read Advertisement Monitor Feature command
- Add Advertisement Pattern Monitor command
- Remove Advertisement Monitor command
- Advertisement Monitor Added event
- Advertisement Monitor Removed event
Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Abhishek Pandit-Subedi [Wed, 17 Jun 2020 14:39:11 +0000 (16:39 +0200)]
Bluetooth: Add get/set device flags mgmt op
Add the get device flags and set device flags mgmt ops and the device
flags changed event. Their behavior is described in detail in
mgmt-api.txt in bluez.
Sample btmon trace when a HID device is added (trimmed to 75 chars):
@ MGMT Command: Unknown (0x0050) plen 11 {0x0001} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 ...........
@ MGMT Event: Unknown (0x002a) plen 15 {0x0004} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Unknown (0x002a) plen 15 {0x0003} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Unknown (0x002a) plen 15 {0x0002} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Command Compl.. (0x0001) plen 10 {0x0001} [hci0] 18:06:14.98
Unknown (0x0050) plen 7
Status: Success (0x00)
90 c5 13 cd f3 cd 02 .......
@ MGMT Command: Add Device (0x0033) plen 8 {0x0001} [hci0] 18:06:14.98
LE Address: CD:F3:CD:13:C5:90 (Static)
Action: Auto-connect remote device (0x02)
@ MGMT Event: Device Added (0x001a) plen 8 {0x0004} [hci0] 18:06:14.98
LE Address: CD:F3:CD:13:C5:90 (Static)
Action: Auto-connect remote device (0x02)
@ MGMT Event: Device Added (0x001a) plen 8 {0x0003} [hci0] 18:06:14.98
LE Address: CD:F3:CD:13:C5:90 (Static)
Action: Auto-connect remote device (0x02)
@ MGMT Event: Device Added (0x001a) plen 8 {0x0002} [hci0] 18:06:14.98
LE Address: CD:F3:CD:13:C5:90 (Static)
Action: Auto-connect remote device (0x02)
@ MGMT Event: Unknown (0x002a) plen 15 {0x0004} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Unknown (0x002a) plen 15 {0x0003} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Unknown (0x002a) plen 15 {0x0002} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
@ MGMT Event: Unknown (0x002a) plen 15 {0x0001} [hci0] 18:06:14.98
90 c5 13 cd f3 cd 02 01 00 00 00 01 00 00 00 ...............
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Abhishek Pandit-Subedi [Wed, 17 Jun 2020 14:39:10 +0000 (16:39 +0200)]
Bluetooth: Replace wakeable in hci_conn_params
Replace the wakeable boolean with flags in hci_conn_params and all users
of this boolean. This will be used by the get/set device flags mgmt op.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Abhishek Pandit-Subedi [Wed, 17 Jun 2020 14:39:09 +0000 (16:39 +0200)]
Bluetooth: Replace wakeable list with flag
Since the classic device list now supports flags, convert the wakeable
list into a flag on the existing device list.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Abhishek Pandit-Subedi [Wed, 17 Jun 2020 14:39:08 +0000 (16:39 +0200)]
Bluetooth: Add bdaddr_list_with_flags for classic whitelist
In order to more easily add device flags to classic devices, create
a new type of bdaddr_list that supports setting flags.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 17 Jun 2020 14:39:07 +0000 (16:39 +0200)]
Bluetooth: mgmt: Add commands for runtime configuration
This adds the required read/set commands for runtime configuration. Even
while currently no parameters are specified, the commands are made
available.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Alain Michaud [Thu, 11 Jun 2020 02:01:57 +0000 (02:01 +0000)]
Bluetooth: implement read/set default system parameters mgmt
This patch implements the read default system parameters and the set
default system parameters mgmt commands.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Thu, 11 Jun 2020 02:01:56 +0000 (02:01 +0000)]
Bluetooth: centralize default value initialization.
This patch centralized the initialization of default parameters. This
is required to allow clients to more easily customize the default
system parameters.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Thu, 11 Jun 2020 02:01:55 +0000 (02:01 +0000)]
Bluetooth: mgmt: read/set system parameter definitions
This patch submits the corresponding kernel definitions to mgmt.h.
This is submitted before the implementation to avoid any conflicts in
values allocations.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Yu Liu <yudiliu@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Balakrishna Godavarthi [Fri, 12 Jun 2020 12:15:17 +0000 (17:45 +0530)]
Bluetooth: hci_qca: Request Tx clock vote off only when Tx is pending
Tx pending flag is set to true when HOST IBS state is AWAKE or
AWAKEING. If IBS state is ASLEEP, then Tx clock is already voted
off. To optimize further directly calling serial_clock_vote()
instead of qca_wq_serial_tx_clock_vote_off(), at this point of
qca_suspend() already data is sent out. No need to wake up hci to
send data.
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Balakrishna Godavarthi [Fri, 12 Jun 2020 12:21:31 +0000 (17:51 +0530)]
Bluetooth: hci_qca: Increase SoC idle timeout to 200ms
In some version of WCN399x, SoC idle timeout is configured
as 80ms instead of 20ms or 40ms. To honor all the SoC's
supported in the driver increasing SoC idle timeout to 200ms.
Fixes:
41d5b25fed0a0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Balakrishna Godavarthi [Fri, 12 Jun 2020 12:20:28 +0000 (17:50 +0530)]
Bluetooth: hci_qca: Disable SoC debug logging for WCN3991
By default, WCN3991 sent debug packets to HOST via ACL packet
with header 0xDC2E. This logging is not required on commercial
devices. With this patch SoC logging is disabled post fw
download.
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Thu, 11 Jun 2020 14:26:10 +0000 (14:26 +0000)]
Bluetooth: Use only 8 bits for the HCI CMSG state flags
This change implements suggestions from the code review of the SCO CMSG
state flag patch.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Thu, 11 Jun 2020 19:50:41 +0000 (19:50 +0000)]
Bluetooth: Add support for BT_PKT_STATUS CMSG data for SCO connections
This change adds support for reporting the BT_PKT_STATUS to the socket
CMSG data to allow the implementation of a packet loss correction on
erroneous data received on the SCO socket.
The patch was partially developed by Marcel Holtmann and validated by
Hsin-yu Chao.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Thu, 11 Jun 2020 01:53:55 +0000 (18:53 -0700)]
Bluetooth: btmrvl_sdio: Refactor irq wakeup
Use device_init_wakeup to allow the Bluetooth dev to wake the system
from suspend. Currently, the device can wake the system but no
power/wakeup entry is created in sysfs to allow userspace to disable
wakeup.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Thu, 11 Jun 2020 01:53:54 +0000 (18:53 -0700)]
Bluetooth: btmrvl_sdio: Implement prevent_wake
Use the parent device's power/wakeup to control whether we support
remote wake. If remote wakeup is disabled, Bluetooth will not enable
scanning for incoming connections.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Thu, 11 Jun 2020 01:53:53 +0000 (18:53 -0700)]
Bluetooth: btmrvl_sdio: Set parent dev to hdev
Set the correct parent dev when registering hdev. This allows userspace
tools to find the parent device (for example, to set the power/wakeup
property).
Before this change, the path was /sys/devices/virtual/bluetooth/hci0
and after this change, it looks more like:
/sys/bus/mmc/devices/mmc1:0001/mmc1:0001:2/bluetooth/hci0
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Chethan T N [Mon, 8 Jun 2020 12:27:47 +0000 (17:57 +0530)]
Bluetooth: btusb: Configure Intel debug feature based on available support
This patch shall enable the Intel telemetry exception format
based on the supported features
Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Ps AyappadasX <AyappadasX.Ps@intel.com>
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Chethan T N [Mon, 8 Jun 2020 12:27:46 +0000 (17:57 +0530)]
Bluetooth: btusb: Add support to read Intel debug feature
The command shall read the Intel controller supported
debug feature. Based on the supported features additional debug
configuration shall be enabled.
Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Ps AyappadasX <AyappadasX.Ps@intel.com>
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Venkata Lakshmi Narayana Gubba [Tue, 9 Jun 2020 15:57:08 +0000 (21:27 +0530)]
Bluetooth: hci_qca: Bug fix during SSR timeout
Due to race conditions between qca_hw_error and qca_controller_memdump
during SSR timeout,the same pointer is freed twice. This results in a
double free. Now a lock is acquired before checking the stauts of SSR
state.
Fixes:
d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Abhishek Pandit-Subedi [Fri, 5 Jun 2020 20:50:15 +0000 (13:50 -0700)]
Bluetooth: Allow suspend even when preparation has failed
It is preferable to allow suspend even when Bluetooth has problems
preparing for sleep. When Bluetooth fails to finish preparing for
suspend, log the error and allow the suspend notifier to continue
instead.
To also make it clearer why suspend failed, change bt_dev_dbg to
bt_dev_err when handling the suspend timeout.
Fixes:
dd522a7429b07e ("Bluetooth: Handle LE devices during suspend")
Reported-by: Len Brown <len.brown@intel.com>
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Matthias Kaehlcke [Fri, 5 Jun 2020 18:46:11 +0000 (11:46 -0700)]
Bluetooth: hci_qca: Refactor error handling in qca_suspend()
If waiting for IBS sleep times out jump to the error handler, this is
easier to read than multiple 'if' branches and a fall through to the
error handler.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Matthias Kaehlcke [Fri, 5 Jun 2020 18:46:10 +0000 (11:46 -0700)]
Bluetooth: hci_qca: Skip serdev wait when no transfer is pending
qca_suspend() calls serdev_device_wait_until_sent() regardless of
whether a transfer is pending. While it does no active harm since
the function should return immediately it makes the code more
confusing. Add a flag to track whether a transfer is pending and
only call serdev_device_wait_until_sent() is needed.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Matthias Kaehlcke [Fri, 5 Jun 2020 18:46:09 +0000 (11:46 -0700)]
Bluetooth: hci_qca: Only remove TX clock vote after TX is completed
qca_suspend() removes the vote for the UART TX clock after
writing an IBS sleep request to the serial buffer. This is
not a good idea since there is no guarantee that the request
has been sent at this point. Instead remove the vote after
successfully entering IBS sleep. This also fixes the issue
of the vote being removed in case of an aborted suspend due
to a failure of entering IBS sleep.
Fixes:
41d5b25fed0a0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Matthias Kaehlcke [Sat, 6 Jun 2020 16:53:06 +0000 (09:53 -0700)]
Bluetooth: hci_qca: Simplify determination of serial clock on/off state from votes
The serial clocks should be on when there is a vote for at least one
of the clocks (RX or TX), and off when there is no 'on' vote. The
current logic to determine the combined state is a bit redundant
in the code paths for different types of votes, use a single
statement in the common path instead.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Dan Carpenter [Fri, 29 May 2020 09:59:48 +0000 (12:59 +0300)]
Bluetooth: hci_qca: Fix an error pointer dereference
When a function like devm_clk_get_optional() function returns both error
pointers on error and NULL then the NULL return means that the optional
feature is deliberately disabled. It is a special sort of success and
should not trigger an error message. The surrounding code should be
written to check for NULL and not crash.
On the other hand, if we encounter an error, then the probe from should
clean up and return a failure.
In this code, if devm_clk_get_optional() returns an error pointer then
the kernel will crash inside the call to:
clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ);
The error handling must be updated to prevent that.
Fixes:
77131dfec6af ("Bluetooth: hci_qca: Replace devm_gpiod_get() with devm_gpiod_get_optional()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alain Michaud [Mon, 1 Jun 2020 14:20:59 +0000 (14:20 +0000)]
Bluetooth: Removing noisy dbg message
This patch removes a particularly noisy dbg message. The debug message
isn't particularly interesting for debuggability so it was simply
removed to reduce noise in dbg logs.
Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Manish Mandlik [Tue, 2 Jun 2020 01:42:51 +0000 (18:42 -0700)]
Bluetooth: Check scan state before disabling during suspend
Check current scan state by checking HCI_LE_SCAN flag and send scan
disable command only if scan is already enabled.
Signed-off-by: Manish Mandlik <mmandlik@google.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pali Rohár [Wed, 3 Jun 2020 08:22:29 +0000 (10:22 +0200)]
btmrvl: Fix firmware filename for sd8997 chipset
Firmware for sd8997 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8997_combo_v4.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8997.
Fixes:
f0ef67485f591 ("Bluetooth: btmrvl: add sd8997 chipset support")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pali Rohár [Wed, 3 Jun 2020 08:22:28 +0000 (10:22 +0200)]
btmrvl: Fix firmware filename for sd8977 chipset
Firmware for sd8977 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8977_combo_v2.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8977.
Fixes:
8c57983bf7a79 ("Bluetooth: btmrvl: add support for sd8977 chipset")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pali Rohár [Wed, 3 Jun 2020 08:22:27 +0000 (10:22 +0200)]
mwifiex: Fix firmware filename for sd8997 chipset
Firmware for sd8997 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8997_combo_v4.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8997.
Fixes:
6d85ef00d9dfe ("mwifiex: add support for 8997 chipset")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pali Rohár [Wed, 3 Jun 2020 08:22:26 +0000 (10:22 +0200)]
mwifiex: Fix firmware filename for sd8977 chipset
Firmware for sd8977 chipset is distributed by Marvell package and also as
part of the linux-firmware repository in filename sdsd8977_combo_v2.bin.
This patch fixes mwifiex driver to load correct firmware file for sd8977.
Fixes:
1a0f547831dce ("mwifiex: add support for sd8977 chipset")
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Thadeu Lima de Souza Cascardo [Tue, 2 Jun 2020 18:38:37 +0000 (15:38 -0300)]
selftests: net: ip_defrag: ignore EPERM
When running with conntrack rules, the dropped overlap fragments may cause
EPERM to be returned to sendto. Instead of completely failing, just ignore
those errors and continue. If this causes packets with overlap fragments to
be dropped as expected, that is okay. And if it causes packets that are
expected to be received to be dropped, which should not happen, it will be
detected as failure.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasily Averin [Tue, 2 Jun 2020 12:55:26 +0000 (15:55 +0300)]
net_failover: fixed rollback in net_failover_open()
found by smatch:
drivers/net/net_failover.c:65 net_failover_open() error:
we previously assumed 'primary_dev' could be null (see line 43)
Fixes:
cfc80d9a1163 ("net: Introduce net_failover driver")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 2 Jun 2020 22:13:47 +0000 (15:13 -0700)]
Merge branch 'tipc-revert-two-patches'
Tuong Lien says:
====================
tipc: revert two patches
We revert two patches:
tipc: Fix potential tipc_node refcnt leak in tipc_rcv
tipc: Fix potential tipc_aead refcnt leak in tipc_crypto_rcv
which prevented TIPC encryption from working properly and caused kernel
panic.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Tuong Lien [Tue, 2 Jun 2020 04:46:41 +0000 (11:46 +0700)]
Revert "tipc: Fix potential tipc_aead refcnt leak in tipc_crypto_rcv"
This reverts commit
441870ee4240cf67b5d3ab8e16216a9ff42eb5d6.
Like the previous patch in this series, we revert the above commit that
causes similar issues with the 'aead' object.
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tuong Lien [Tue, 2 Jun 2020 04:46:40 +0000 (11:46 +0700)]
Revert "tipc: Fix potential tipc_node refcnt leak in tipc_rcv"
This reverts commit
de058420767df21e2b6b0f3bb36d1616fb962032.
There is no actual tipc_node refcnt leak as stated in the above commit.
The refcnt is hold carefully for the case of an asynchronous decryption
(i.e. -EINPROGRESS/-EBUSY and skb = NULL is returned), so that the node
object cannot be freed in the meantime. The counter will be re-balanced
when the operation's callback arrives with the decrypted buffer if any.
In other cases, e.g. a synchronous crypto the counter will be decreased
immediately when it is done.
Now with that commit, a kernel panic will occur when there is no node
found (i.e. n = NULL) in the 'tipc_rcv()' or a premature release of the
node object.
This commit solves the issues by reverting the said commit, but keeping
one valid case that the 'skb_linearize()' is failed.
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Tested-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ronak Doshi [Tue, 2 Jun 2020 03:02:39 +0000 (20:02 -0700)]
vmxnet3: allow rx flow hash ops only when rss is enabled
It makes sense to allow changes to get/set rx flow hash callback only
when rss is enabled. This patch restricts get_rss_hash_opts and
set_rss_hash_opts methods to allow querying and configuring different
Rx flow hash configurations only when rss is enabled
Signed-off-by: Ronak Doshi <doshir@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Luo bin [Tue, 2 Jun 2020 00:40:32 +0000 (08:40 +0800)]
hinic: add set_channels ethtool_ops support
add support to change TX/RX queue number with "ethtool -L combined".
V5 -> V6: remove check for carrier in hinic_xmit_frame
V4 -> V5: change time zone in patch header
V3 -> V4: update date in patch header
V2 -> V3: remove check for zero channels->combined_count
V1 -> V2: update commit message("ethtool -L" to "ethtool -L combined")
V0 -> V1: remove check for channels->tx_count/rx_count/other_count
Signed-off-by: Luo bin <luobin9@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 2 Jun 2020 22:09:39 +0000 (15:09 -0700)]
Merge git://git./linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-06-02
The following pull-request contains BPF _fixes-only_ for your *net-next*
tree.
We've added 10 non-merge commits during the last 1 day(s) which contain
a total of 15 files changed, 229 insertions(+), 74 deletions(-).
The main changes are:
1) Several fixes to s390 BPF JIT e.g. fixing kernel panic when BPF stack is
not 8-byte aligned, from Ilya Leoshkevich.
2) Fix bpf_skb_adjust_room() helper's CHECKSUM_UNNECESSARY handling which
was wrongly bypassing TCP checksum verification, from Daniel Borkmann.
3) Fix tools/bpf/ build under MAKEFLAGS=rR which causes built-in CXX and
others vars to be undefined, also from Ilya Leoshkevich.
4) Fix BPF ringbuf's selftest shared sample_cnt variable to avoid compiler
optimizations on it, from Andrii Nakryiko.
5) Fix up test_verifier selftest due to addition of rx_queue_mapping to
the bpf_sock structure, from Alexei Starovoitov.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilya Leoshkevich [Tue, 2 Jun 2020 17:56:49 +0000 (19:56 +0200)]
selftests/bpf: Add a default $(CXX) value
When using make kselftest TARGETS=bpf, tools/bpf is built with
MAKEFLAGS=rR, which causes $(CXX) to be undefined, which in turn causes
the build to fail with
CXX test_cpp
/bin/sh: 2: g: not found
Fix by adding a default $(CXX) value, like tools/build/feature/Makefile
already does.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602175649.2501580-3-iii@linux.ibm.com
Ilya Leoshkevich [Tue, 2 Jun 2020 17:56:48 +0000 (19:56 +0200)]
tools/bpf: Don't use $(COMPILE.c)
When using make kselftest TARGETS=bpf, tools/bpf is built with
MAKEFLAGS=rR, which causes $(COMPILE.c) to be undefined, which in turn
causes the build to fail with
CC kselftest/bpf/tools/build/bpftool/map_perf_ring.o
/bin/sh: 1: -MMD: not found
Fix by using $(CC) $(CFLAGS) -c instead of $(COMPILE.c).
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602175649.2501580-2-iii@linux.ibm.com
Ilya Leoshkevich [Tue, 2 Jun 2020 17:44:48 +0000 (19:44 +0200)]
bpf, selftests: Use bpf_probe_read_kernel
Since commit
0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to
archs where they work") 44 verifier tests fail on s390 due to not having
bpf_probe_read anymore. Fix by using bpf_probe_read_kernel.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602174448.2501214-1-iii@linux.ibm.com
Ilya Leoshkevich [Tue, 2 Jun 2020 17:45:55 +0000 (19:45 +0200)]
s390/bpf: Use bcr 0,%0 as tail call nop filler
Currently used 0x0000 filler confuses bfd disassembler, making bpftool
prog dump xlated output nearly useless. Fix by using a real instruction.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602174555.2501389-1-iii@linux.ibm.com
Ilya Leoshkevich [Tue, 2 Jun 2020 17:43:39 +0000 (19:43 +0200)]
s390/bpf: Maintain 8-byte stack alignment
Certain kernel functions (e.g. get_vtimer/set_vtimer) cause kernel
panic when the stack is not 8-byte aligned. Currently JITed BPF programs
may trigger this by allocating stack frames with non-rounded sizes and
then being interrupted. Fix by using rounded fp->aux->stack_depth.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602174339.2501066-1-iii@linux.ibm.com