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Changes in 4.4.57:
usb: core: hub: hub_port_init lock controller instead of bus
USB: don't free bandwidth_mutex too early
crypto: ghash-clmulni - Fix load failure
crypto: cryptd - Assign statesize properly
crypto: mcryptd - Fix load failure
cxlflash: Increase cmd_per_lun for better throughput
ACPI / video: skip evaluating _DOD when it does not exist
pinctrl: cherryview: Do not mask all interrupts in probe
Drivers: hv: balloon: don't crash when memory is added in non-sorted order
Drivers: hv: avoid vfree() on crash
xen/qspinlock: Don't kick CPU if IRQ is not initialized
KVM: PPC: Book3S PR: Fix illegal opcode emulation
s390/pci: fix use after free in dma_init
drm/amdgpu: add missing irq.h include
tpm_tis: Use devm_free_irq not free_irq
hv_netvsc: use skb_get_hash() instead of a homegrown implementation
kernek/fork.c: allocate idle task for a CPU always on its local node
give up on gcc ilog2() constant optimizations
perf/core: Fix event inheritance on fork()
cpufreq: Fix and clean up show_cpuinfo_cur_freq()
powerpc/boot: Fix zImage TOC alignment
md/raid1/10: fix potential deadlock
target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export
scsi: lpfc: Add shutdown method for kexec
scsi: libiscsi: add lock around task lists to fix list corruption regression
target: Fix VERIFY_16 handling in sbc_parse_cdb
isdn/gigaset: fix NULL-deref at probe
gfs2: Avoid alignment hole in struct lm_lockname
percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages
ext4: fix fencepost in s_first_meta_bg validation
Linux 4.4.57
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit ab2a4bf83902c170d29ba130a8abb5f9d90559e1 upstream.
The USB core contains a bug that can show up when a USB-3 host
controller is removed. If the primary (USB-2) hcd structure is
released before the shared (USB-3) hcd, the core will try to do a
double-free of the common bandwidth_mutex.
The problem was described in graphical form by Chung-Geol Kim, who
first reported it:
=================================================
At *remove USB(3.0) Storage
sequence <1> --> <5> ((Problem Case))
=================================================
VOLD
------------------------------------|------------
(uevent)
________|_________
|<1> |
|dwc3_otg_sm_work |
|usb_put_hcd |
|peer_hcd(kref=2)|
|__________________|
________|_________
|<2> |
|New USB BUS #2 |
| |
|peer_hcd(kref=1) |
| |
--(Link)-bandXX_mutex|
| |__________________|
|
___________________ |
|<3> | |
|dwc3_otg_sm_work | |
|usb_put_hcd | |
|primary_hcd(kref=1)| |
|___________________| |
_________|_________ |
|<4> | |
|New USB BUS #1 | |
|hcd_release | |
|primary_hcd(kref=0)| |
| | |
|bandXX_mutex(free) |<-
|___________________|
(( VOLD ))
______|___________
|<5> |
| SCSI |
|usb_put_hcd |
|peer_hcd(kref=0) |
|*hcd_release |
|bandXX_mutex(free*)|<- double free
|__________________|
=================================================
This happens because hcd_release() frees the bandwidth_mutex whenever
it sees a primary hcd being released (which is not a very good idea
in any case), but in the course of releasing the primary hcd, it
changes the pointers in the shared hcd in such a way that the shared
hcd will appear to be primary when it gets released.
This patch fixes the problem by changing hcd_release() so that it
deallocates the bandwidth_mutex only when the _last_ hcd structure
referencing it is released. The patch also removes an unnecessary
test, so that when an hcd is released, both the shared_hcd and
primary_hcd pointers in the hcd's peer will be cleared.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Chung-Geol Kim <chunggeol.kim@samsung.com>
Tested-by: Chung-Geol Kim <chunggeol.kim@samsung.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit feb26ac31a2a5cb88d86680d9a94916a6343e9e6 upstream.
The XHCI controller presents two USB buses to the system - one for USB2
and one for USB3. The hub init code (hub_port_init) is reentrant but
only locks one bus per thread, leading to a race condition failure when
two threads attempt to simultaneously initialise a USB2 and USB3 device:
[ 8.034843] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 13.183701] usb 3-3: device descriptor read/all, error -110
On a test system this failure occurred on 6% of all boots.
The call traces at the point of failure are:
Call Trace:
[<ffffffff81b9bab7>] schedule+0x37/0x90
[<ffffffff817da7cd>] usb_kill_urb+0x8d/0xd0
[<ffffffff8111e5e0>] ? wake_up_atomic_t+0x30/0x30
[<ffffffff817dafbe>] usb_start_wait_urb+0xbe/0x150
[<ffffffff817db10c>] usb_control_msg+0xbc/0xf0
[<ffffffff817d07de>] hub_port_init+0x51e/0xb70
[<ffffffff817d4697>] hub_event+0x817/0x1570
[<ffffffff810f3e6f>] process_one_work+0x1ff/0x620
[<ffffffff810f3dcf>] ? process_one_work+0x15f/0x620
[<ffffffff810f4684>] worker_thread+0x64/0x4b0
[<ffffffff810f4620>] ? rescuer_thread+0x390/0x390
[<ffffffff810fa7f5>] kthread+0x105/0x120
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
[<ffffffff81ba183f>] ret_from_fork+0x3f/0x70
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
Call Trace:
[<ffffffff817fd36d>] xhci_setup_device+0x53d/0xa40
[<ffffffff817fd87e>] xhci_address_device+0xe/0x10
[<ffffffff817d047f>] hub_port_init+0x1bf/0xb70
[<ffffffff811247ed>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff817d4697>] hub_event+0x817/0x1570
[<ffffffff810f3e6f>] process_one_work+0x1ff/0x620
[<ffffffff810f3dcf>] ? process_one_work+0x15f/0x620
[<ffffffff810f4684>] worker_thread+0x64/0x4b0
[<ffffffff810f4620>] ? rescuer_thread+0x390/0x390
[<ffffffff810fa7f5>] kthread+0x105/0x120
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
[<ffffffff81ba183f>] ret_from_fork+0x3f/0x70
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
Which results from the two call chains:
hub_port_init
usb_get_device_descriptor
usb_get_descriptor
usb_control_msg
usb_internal_control_msg
usb_start_wait_urb
usb_submit_urb / wait_for_completion_timeout / usb_kill_urb
hub_port_init
hub_set_address
xhci_address_device
xhci_setup_device
Mathias Nyman explains the current behaviour violates the XHCI spec:
hub_port_reset() will end up moving the corresponding xhci device slot
to default state.
As hub_port_reset() is called several times in hub_port_init() it
sounds reasonable that we could end up with two threads having their
xhci device slots in default state at the same time, which according to
xhci 4.5.3 specs still is a big no no:
"Note: Software shall not transition more than one Device Slot to the
Default State at a time"
So both threads fail at their next task after this.
One fails to read the descriptor, and the other fails addressing the
device.
Fix this in hub_port_init by locking the USB controller (instead of an
individual bus) to prevent simultaneous initialisation of both buses.
Fixes: 638139eb95d2 ("usb: hub: allow to process more usb hub events in parallel")
Link: https://lkml.org/lkml/2016/2/8/312
Link: https://lkml.org/lkml/2016/2/4/748
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[sumits: minor merge conflict resolution for linux-4.4.y]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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am: 72bb2b96b8
Change-Id: Ie1079bef9c43dce4ccecb52acbee12b4dd044e3f
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am: e71c7bad68
Change-Id: I865b297bdb9d8c9eb69e7548ceef6e640f9061e6
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am: 6498086195
Change-Id: Ib6ec11fa0bef224af9368ee4aba48d8d4663da50
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am: 179295c38d
Change-Id: If8771741f6228ec6af891a160d5af5f6789f5409
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am: 54f11a9662
Change-Id: If2605f1daf506ae915776138b6268d0769a39487
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am: 3cdc946387
Change-Id: I2a29b5d7a753bd94d320bda52427bd62ab042787
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am: cf09c7d60c
Change-Id: I5cab1e3af61dd148ff737ba1dc68935407342983
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am: 40c5634ffe
Change-Id: I41ed67d92ce661cb607ae65e297856b34e6a05d5
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am: 4a1a3bb70f
Change-Id: I7b29e1d8050144b745f4885566e37d2bbca122a3
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am: 10af248565
Change-Id: I5c852ac4d0fbe9276986df1a57e93979ec8f6cf9
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am: f47b97f2cd
Change-Id: Ifad25d5604ef1bc2c10cc4c5414348c23f37beb0
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am: a8cb5c02a2
Change-Id: I542f42e517db3d00ff3a2b5735149af2bf989c55
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am: 4d95645f3d
Change-Id: Iabb41fdc9064da31bd16e93ecc1ed5846fca8df5
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Reapplying fix by Darren Whobrey (Change 69674)
Fixes issues: 20545, 59667 and 61390.
With prior version of f_accessory.c, UsbAccessories would not
unbind cleanly when application is closed or i/o stopped
while the usb cable is still connected. The accessory gadget
driver would be left in an invalid state which was not reset
on subsequent binding or opening. A reboot was necessary to clear.
In some phones this issues causes the phone to reboot upon
unplugging the USB cable.
Main problem was that acc_disconnect was being called on I/O error
which reset disconnected and online.
Minor fix required to properly track setting and unsetting of
disconnected and online flags. Also added urb Q wakeup's on unbind
to help unblock waiting threads.
Tested on Nexus 7 grouper. Expected behaviour now observed:
closing accessory causes blocked i/o to interrupt with IOException.
Accessory can be restarted following closing of file handle
and re-opening.
This is a generic fix that applies to all devices.
Change-Id: I4e08b326730dd3a2820c863124cee10f7cb5501e
Signed-off-by: Darren Whobrey <d.whobrey@mildai.org>
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
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am: 80190fcc48
Change-Id: Ib4f93f39b176b203c78a63bcdd8ab6b215db5b31
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am: 61e9e9bcfd
Change-Id: I34fa79dc6db2afab25940511c4993bf616a194bc
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am: 900466a746
Change-Id: Icbe05d3d58966174fac972609a3b0aeba34c01d3
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Fix checkpatch.pl warning:
Block comments use * on subsequent lines
Change-Id: I9c92f128fdb3aeeb6ab9c7039e11f857bebb9539
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
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This is the 4.4.48 stable release
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This is the 4.4.45 stable release
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This is the 4.4.43 stable release
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This is the 4.4.40 stable release
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This is the 4.4.36 stable release
Change-Id: I757d3c6e2c6d8722b38160885ec52e177ce0735a
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Fix warning generated by checkpatch.pl:
Missing a blank line after declarations
Change-Id: Id129bb8cc8fa37c67a647e2e5996bb2817020e65
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
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This is the 4.4.34 stable release
Change-Id: Ic90323945584a7173f54595e0482d26fafd10174
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Change-Id: I38c4f4a850b0329fb4a06b2c7e45558e16d66151
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
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This is the 4.4.32 stable release
Change-Id: I5028402eadfcf055ac44a5e67abc6da75b2068b3
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Simplify MTP/PTP dev NULL pointer check introduced in
Change-Id: Ic44a699d96df2e13467fc081bff88b97dcc5afb2
and restrict it to MTP/PTP function level only.
Return ERR_PTR() instead of NULL from mtp_ptp function
to skip doing NULL pointer checks all the way up to
configfs.c
Fixes: Change-Id: Ic44a699d96df2e13467fc081bff88b97dcc5afb2
("usb: gadget: fix NULL ptr derefer while symlinking PTP func")
Change-Id: Iab7c55089c115550c3506f6cca960a07ae52713d
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
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Use div_s64() instead of do_div() to fix following "comparison of
distinct pointer types lacks a cast" warning in do_div() call in
audio_send() for ARCH=arm in Linux 4.8-rc6:
CC drivers/usb/gadget/function/f_audio_source.o
In file included from ./arch/arm/include/asm/div64.h:126:0,
from ./include/linux/kernel.h:142,
from ./include/linux/list.h:8,
from ./include/linux/kobject.h:20,
from ./include/linux/device.h:17,
from drivers/usb/gadget/function/f_audio_source.c:17:
drivers/usb/gadget/function/f_audio_source.c: In function ‘audio_send’:
./include/asm-generic/div64.h:207:28: warning: comparison of distinct pointer types lacks a cast
(void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
^
drivers/usb/gadget/function/f_audio_source.c:381:2: note: in expansion of macro ‘do_div’
do_div(msecs, 1000000);
^
./include/asm-generic/div64.h:207:28: warning: comparison of distinct pointer types lacks a cast
(void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
^
drivers/usb/gadget/function/f_audio_source.c:383:2: note: in expansion of macro ‘do_div’
do_div(frames, 1000);
^
LD drivers/usb/gadget/function/usb_f_audio_source.o
Change-Id: Ie1a920c8948f3fc3f1263add25a402ded132fd66
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
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(cherry picked from commit 38740a5b87d53ceb89eb2c970150f6e94e00373a)
When using asynchronous read or write operations on the USB endpoints the
issuer of the IO request is notified by calling the ki_complete() callback
of the submitted kiocb when the URB has been completed.
Calling this ki_complete() callback will free kiocb. Make sure that the
structure is no longer accessed beyond that point, otherwise undefined
behaviour might occur.
Fixes: 2e4c7553cd6f ("usb: gadget: f_fs: add aio support")
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Change-Id: I3c7b643f6440c4fb6160a57c1058523030b46a6c
Bug: 30950866
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commit 8835ba4a39cf53f705417b3b3a94eb067673f2c9 upstream.
An attack has become available which pretends to be a quirky
device circumventing normal sanity checks and crashes the kernel
by an insufficient number of interfaces. This patch adds a check
to the code path for quirky devices.
BUG: 28242610
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I9a5f7f3c704b65e866335054f470451fcfae9d1c
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commit 4ec0ef3a82125efc36173062a50624550a900ae0 upstream.
The iowarrior driver expects at least one valid endpoint. If given
malicious descriptors that specify 0 for the number of endpoints,
it will crash in the probe function. Ensure there is at least
one endpoint on the interface before using it.
The full report of this issue can be found here:
http://seclists.org/bugtraq/2016/Mar/87
BUG: 28242610
Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: If5161c23928e9ef77cb3359cba9b36622b1908df
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commit 0b818e3956fc1ad976bee791eadcbb3b5fec5bfd upstream.
Attacks that trick drivers into passing a NULL pointer
to usb_driver_claim_interface() using forged descriptors are
known. This thwarts them by sanity checking.
BUG: 28242610
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ib43ec5edb156985a9db941785a313f6801df092a
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commit 4e9a0b05257f29cf4b75f3209243ed71614d062e upstream.
An attack using the lack of sanity checking in probe is known. This
patch checks for the existence of a second port.
CVE-2016-3136
BUG: 28242610
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
[johan: add error message ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I284ad648c2087c34a098d67e0cc6d948a568413c
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commit c55aee1bf0e6b6feec8b2927b43f7a09a6d5f754 upstream.
An attack using missing endpoints exists.
CVE-2016-3137
BUG: 28242610
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I1cc7957a5924175d24f12fdc41162ece67c907e5
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This is the 4.4.24 stable release
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This is the 4.4.22 stable release
Change-Id: Id49e3c87d2cacb2fa85d85a17226f718f4a5ac28
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This is the 4.4.20 stable release
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There may be a race condition if f_fs calls unregister_gadget_item in
ffs_closed() when unregister_gadget is called by UDC store at the same time.
this leads to a kernel NULL pointer dereference:
[ 310.644928] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[ 310.645053] init: Service 'adbd' is being killed...
[ 310.658938] pgd = c9528000
[ 310.662515] [00000004] *pgd=19451831, *pte=00000000, *ppte=00000000
[ 310.669702] Internal error: Oops: 817 [#1] PREEMPT SMP ARM
[ 310.675211] Modules linked in:
[ 310.678294] CPU: 0 PID: 1537 Comm: ->transport Not tainted 4.1.15-03725-g793404c #2
[ 310.685958] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[ 310.692493] task: c8e24200 ti: c945e000 task.ti: c945e000
[ 310.697911] PC is at usb_gadget_unregister_driver+0xb4/0xd0
[ 310.703502] LR is at __mutex_lock_slowpath+0x10c/0x16c
[ 310.708648] pc : [<c075efc0>] lr : [<c0bfb0bc>] psr: 600f0113
<snip..>
[ 311.565585] [<c075efc0>] (usb_gadget_unregister_driver) from [<c075e2b8>] (unregister_gadget_item+0x1c/0x34)
[ 311.575426] [<c075e2b8>] (unregister_gadget_item) from [<c076fcc8>] (ffs_closed+0x8c/0x9c)
[ 311.583702] [<c076fcc8>] (ffs_closed) from [<c07736b8>] (ffs_data_reset+0xc/0xa0)
[ 311.591194] [<c07736b8>] (ffs_data_reset) from [<c07738ac>] (ffs_data_closed+0x90/0xd0)
[ 311.599208] [<c07738ac>] (ffs_data_closed) from [<c07738f8>] (ffs_ep0_release+0xc/0x14)
[ 311.607224] [<c07738f8>] (ffs_ep0_release) from [<c023e030>] (__fput+0x80/0x1d0)
[ 311.614635] [<c023e030>] (__fput) from [<c014e688>] (task_work_run+0xb0/0xe8)
[ 311.621788] [<c014e688>] (task_work_run) from [<c010afdc>] (do_work_pending+0x7c/0xa4)
[ 311.629718] [<c010afdc>] (do_work_pending) from [<c010770c>] (work_pending+0xc/0x20)
for functions using functionFS, i.e. android adbd will close /dev/usb-ffs/adb/ep0
when usb IO thread fails, but switch adb from on to off also triggers write
"none" > UDC. These 2 operations both call unregister_gadget, which will lead
to the panic above.
add a mutex before calling unregister_gadget for api used in f_fs.
Signed-off-by: Winter Wang <wente.wang@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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This is the 4.4.19 stable release
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This is the 4.4.17 stable release
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This is the 4.4.16 stable release
Change-Id: Ibaf7b7e03695e1acebc654a2ca1a4bfcc48fcea4
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usb_ep_autoconfig is called twice for allocating
bulk out endpoint.
Removed the unwanted call.
Fixes Issue: 67180
Change-Id: I03e87a86fbbbc85831ff7f0496adf038d1de2956
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
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