linux-stable.git/drivers/uwb, branch linux-4.9.y

uwb: hwa-rc: fix memory leak at probe

2018-10-04T00:01:42+00:00

[ Upstream commit 11b71782c1d10d9bccc31825cf84291cd7588a1e ]

hwarc_probe() allocates memory for hwarc, but does not free it
if uwb_rc_add() or hwarc_get_version() fail.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

uwb: ensure that endpoint is interrupt

2017-10-12T09:51:19+00:00

commit 70e743e4cec3733dc13559f6184b35d358b9ef3f upstream.

hwarc_neep_init() assumes that endpoint 0 is interrupt, but there's no
check for that, which results in a WARNING in USB core code, when a bad
USB descriptor is provided from a device:

usb 1-1: BOGUS urb xfer, pipe 1 != type 3
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3 at drivers/usb/core/urb.c:449 usb_submit_urb+0xf8a/0x11d0
Modules linked in:
CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.13.0+ #111
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Workqueue: usb_hub_wq hub_event
task: ffff88006bdc1a00 task.stack: ffff88006bde8000
RIP: 0010:usb_submit_urb+0xf8a/0x11d0 drivers/usb/core/urb.c:448
RSP: 0018:ffff88006bdee3c0 EFLAGS: 00010282
RAX: 0000000000000029 RBX: ffff8800672a7200 RCX: 0000000000000000
RDX: 0000000000000029 RSI: ffff88006c815c78 RDI: ffffed000d7bdc6a
RBP: ffff88006bdee4c0 R08: fffffbfff0fe00ff R09: fffffbfff0fe00ff
R10: 0000000000000018 R11: fffffbfff0fe00fe R12: 1ffff1000d7bdc7f
R13: 0000000000000003 R14: 0000000000000001 R15: ffff88006b02cc90
FS:  0000000000000000(0000) GS:ffff88006c800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe4daddf000 CR3: 000000006add6000 CR4: 00000000000006f0
Call Trace:
 hwarc_neep_init+0x4ce/0x9c0 drivers/uwb/hwa-rc.c:710
 uwb_rc_add+0x2fb/0x730 drivers/uwb/lc-rc.c:361
 hwarc_probe+0x34e/0x9b0 drivers/uwb/hwa-rc.c:858
 usb_probe_interface+0x351/0x8d0 drivers/usb/core/driver.c:361
 really_probe drivers/base/dd.c:385
 driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
 __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
 bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
 __device_attach+0x269/0x3c0 drivers/base/dd.c:682
 device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
 bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
 device_add+0xcf9/0x1640 drivers/base/core.c:1703
 usb_set_configuration+0x1064/0x1890 drivers/usb/core/message.c:1932
 generic_probe+0x73/0xe0 drivers/usb/core/generic.c:174
 usb_probe_device+0xaf/0xe0 drivers/usb/core/driver.c:266
 really_probe drivers/base/dd.c:385
 driver_probe_device+0x610/0xa00 drivers/base/dd.c:529
 __device_attach_driver+0x230/0x290 drivers/base/dd.c:625
 bus_for_each_drv+0x15e/0x210 drivers/base/bus.c:463
 __device_attach+0x269/0x3c0 drivers/base/dd.c:682
 device_initial_probe+0x1f/0x30 drivers/base/dd.c:729
 bus_probe_device+0x1da/0x280 drivers/base/bus.c:523
 device_add+0xcf9/0x1640 drivers/base/core.c:1703
 usb_new_device+0x7b8/0x1020 drivers/usb/core/hub.c:2457
 hub_port_connect drivers/usb/core/hub.c:4890
 hub_port_connect_change drivers/usb/core/hub.c:4996
 port_event drivers/usb/core/hub.c:5102
 hub_event+0x23c8/0x37c0 drivers/usb/core/hub.c:5182
 process_one_work+0x9fb/0x1570 kernel/workqueue.c:2097
 worker_thread+0x1e4/0x1350 kernel/workqueue.c:2231
 kthread+0x324/0x3f0 kernel/kthread.c:231
 ret_from_fork+0x25/0x30 arch/x86/entry/entry_64.S:425
Code: 48 8b 85 30 ff ff ff 48 8d b8 98 00 00 00 e8 8e 93 07 ff 45 89
e8 44 89 f1 4c 89 fa 48 89 c6 48 c7 c7 a0 e5 55 86 e8 20 08 8f fd <0f>
ff e9 9b f7 ff ff e8 4a 04 d6 fd e9 80 f7 ff ff e8 60 11 a6
---[ end trace 55d741234124cfc3 ]---

Check that endpoint is interrupt.

Found by syzkaller.

Signed-off-by: Andrey Konovalov 
Signed-off-by: Greg Kroah-Hartman

uwb: properly check kthread_run return value

2017-10-12T09:51:19+00:00

commit bbf26183b7a6236ba602f4d6a2f7cade35bba043 upstream.

uwbd_start() calls kthread_run() and checks that the return value is
not NULL. But the return value is not NULL in case kthread_run() fails,
it takes the form of ERR_PTR(-EINTR).

Use IS_ERR() instead.

Also add a check to uwbd_stop().

Signed-off-by: Andrey Konovalov 
Signed-off-by: Greg Kroah-Hartman

uwb: fix device quirk on big-endian hosts

2017-05-25T13:44:46+00:00

commit 41318a2b82f5d5fe1fb408f6d6e0b22aa557111d upstream.

Add missing endianness conversion when using the USB device-descriptor
idProduct field to apply a hardware quirk.

Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver")
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

uwb: hwa-rc: fix NULL-deref at probe

2017-03-30T07:41:24+00:00

commit daf229b15907fbfdb6ee183aac8ca428cb57e361 upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.

Note that the dereference happens in the start callback which is called
during probe.

Fixes: de520b8bd552 ("uwb: add HWA radio controller driver")
Cc: Inaky Perez-Gonzalez 
Cc: David Vrabel 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

uwb: i1480-dfu: fix NULL-deref at probe

2017-03-30T07:41:24+00:00

commit 4ce362711d78a4999011add3115b8f4b0bc25e8c upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.

Note that the dereference happens in the cmd and wait_init_done
callbacks which are called during probe.

Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver")
Cc: Inaky Perez-Gonzalez 
Cc: David Vrabel 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

uwb: fix device reference leaks

2016-11-01T15:04:04+00:00

This subsystem consistently fails to drop the device reference taken by
class_find_device().

Note that some of these lookup functions already take a reference to the
returned data, while others claim no reference is needed (or does not
seem need one).

Fixes: 183b9b592a62 ("uwb: add the UWB stack (core files)")
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

uwb: hwa-rc: don't print error when allocating urb fails

2016-08-15T13:52:40+00:00

kmalloc will print enough information in case of failure.

Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

uwb: uwbd() is not freezable kthread

2015-12-01T22:26:33+00:00

uwbd() calls try_to_freeze(), but the thread doesn't mark itself freezable
through set_freezable(), so the try_to_freeze() call is useless.

Signed-off-by: Jiri Kosina 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2015-11-05T05:50:37+00:00

Pull driver core updates from Greg KH:
 "Here's the "big" driver core updates for 4.4-rc1.  Primarily a bunch
  of debugfs updates, with a smattering of minor driver core fixes and
  updates as well.

  All have been in linux-next for a long time"

* tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  debugfs: Add debugfs_create_ulong()
  of: to support binding numa node to specified device in devicetree
  debugfs: Add read-only/write-only bool file ops
  debugfs: Add read-only/write-only size_t file ops
  debugfs: Add read-only/write-only x64 file ops
  debugfs: Consolidate file mode checks in debugfs_create_*()
  Revert "mm: Check if section present during memory block (un)registering"
  driver-core: platform: Provide helpers for multi-driver modules
  mm: Check if section present during memory block (un)registering
  devres: fix a for loop bounds check
  CMA: fix CONFIG_CMA_SIZE_MBYTES overflow in 64bit
  base/platform: assert that dev_pm_domain callbacks are called unconditionally
  sysfs: correctly handle short reads on PREALLOC attrs.
  base: soc: siplify ida usage
  kobject: move EXPORT_SYMBOL() macros next to corresponding definitions
  kobject: explain what kobject's sd field is
  debugfs: document that debugfs_remove*() accepts NULL and error values
  debugfs: Pass bool pointer to debugfs_create_bool()
  ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'