commit e860d2c904 upstream.
Validate the output buffer length for L2CAP config requests and responses
to avoid overflowing the stack buffer used for building the option blocks.
Signed-off-by: Ben Seri <ben@armis.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6c6b5a39c4 upstream.
Several distributions mount the "proper root" as ro during initrd and
then remount it as rw before pivot_root(2). Thus, if a rescan had been
aborted by a previous shutdown, the rescan would never be resumed.
This issue would manifest itself as several btrfs ioctl(2)s causing the
entire machine to hang when btrfs_qgroup_wait_for_completion was hit
(due to the fs_info->qgroup_rescan_running flag being set but the rescan
itself not being resumed). Notably, Docker's btrfs storage driver makes
regular use of BTRFS_QUOTA_CTL_DISABLE and BTRFS_IOC_QUOTA_RESCAN_WAIT
(causing this problem to be manifested on boot for some machines).
Cc: Jeff Mahoney <jeffm@suse.com>
Fixes: b382a324b6 ("Btrfs: fix qgroup rescan resume on mount")
Signed-off-by: Aleksa Sarai <asarai@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 40a5fce495 upstream.
The default host NQN, which is generated based on the host's UUID,
does not follow the UUID-based NQN format laid out in the NVMe 1.3
specification. Remove the "NVMf:" portion of the NQN to match the spec.
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 10777de570 upstream.
The configuration for BCH is not correct in the current driver.
The ECC_CFG_ECC_DISABLE bit defines whether to enable or disable the
BCH ECC in which
0x1 : BCH_DISABLED
0x0 : BCH_ENABLED
But currently host->bch_enabled is being assigned to BCH_DISABLED.
Fixes: c76b78d8ec ("mtd: nand: Qualcomm NAND controller driver")
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d8a9b320a2 upstream.
The NAND page read fails without complete boot chain since
NAND_DEV_CMD_VLD value is not proper. The default power on reset
value for this register is
0xe - ERASE_START_VALID | WRITE_START_VALID | READ_STOP_VALID
The READ_START_VALID should be enabled for sending PAGE_READ
command. READ_STOP_VALID should be cleared since normal NAND
page read does not require READ_STOP command.
Fixes: c76b78d8ec ("mtd: nand: Qualcomm NAND controller driver")
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3bff08dffe upstream.
Commit a894cf6c5a ("mtd: nand: mxc: switch to mtd_ooblayout_ops")
introduced a bug in the OOB layout description. Even if the driver claims
that 3 ECC bytes are reserved to protect 512 bytes of data, it's actually
5 ECC bytes to protect 512+6 bytes of data (some OOB bytes are also
protected using extra ECC bytes).
Fix the mxc_v1_ooblayout_{free,ecc}() functions to reflect this behavior.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: a894cf6c5a ("mtd: nand: mxc: switch to mtd_ooblayout_ops")
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8d26f49111 upstream.
Commit 1bc0eb0446 ("scsi: sg: protect accesses to 'reserved' page
array") adds needed concurrency protection for the "reserve" buffer.
Some checks that are initially made outside the lock are replicated once
the lock is taken to ensure the checks and resulting decisions are made
using consistent state.
The check that a request with flag SG_FLAG_MMAP_IO set fits in the
reserve buffer also needs to be performed again under the lock to ensure
the reserve buffer length compared against matches the value in effect
when the request is linked to the reserve buffer. An -ENOMEM should be
returned in this case, instead of switching over to an indirect buffer
as for non-MMAP_IO requests.
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6a8dadcca8 upstream.
Take f_mutex around mmap() processing to protect against races with the
SG_SET_RESERVED_SIZE ioctl. Ensure the reserve buffer length remains
consistent during the mapping operation, and set the "mmap called" flag
to prevent further changes to the reserved buffer size as an atomic
operation with the mapping.
[mkp: fixed whitespace]
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 591b6bb605 upstream.
Several legacy devices such as Geode-based Cisco ASA appliances
and DB800 development board do possess CS5536 IDE controller
with different PCI id than existing one. Using pata_generic is
not always feasible as at least DB800 requires MSR quirk from
pata_cs5536 to be used with vendor firmware.
Signed-off-by: Andrey Korolyov <andrey@xdel.ru>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fbf1c41fc0 upstream.
Commit 0a94efb5ac ("workqueue: implicit ordered attribute should be
overridable") introduced a __WQ_ORDERED_EXPLICIT flag but gave it the
same value as __WQ_LEGACY. I don't believe these were intended to
mean the same thing, so renumber __WQ_ORDERED_EXPLICIT.
Fixes: 0a94efb5ac ("workqueue: implicit ordered attribute should be ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bc60c90f47 upstream.
It appears that MSI does not work on either G5 PPC nor on a E5500-based
platform, where other hardware is reported to work fine with MSI.
Both tests were conducted with NV4x hardware, so perhaps other (or even
this) hardware can be made to work. It's still possible to force-enable
with config=NvMSI=1 on load.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fa41ba0d08 upstream.
Right now there is a potential hang situation for postcopy migrations,
if the guest is enabling storage keys on the target system during the
postcopy process.
For storage key virtualization, we have to forbid the empty zero page as
the storage key is a property of the physical page frame. As we enable
storage key handling lazily we then drop all mappings for empty zero
pages for lazy refaulting later on.
This does not work with the postcopy migration, which relies on the
empty zero page never triggering a fault again in the future. The reason
is that postcopy migration will simply read a page on the target system
if that page is a known zero page to fault in an empty zero page. At
the same time postcopy remembers that this page was already transferred
- so any future userfault on that page will NOT be retransmitted again
to avoid races.
If now the guest enters the storage key mode while in postcopy, we will
break this assumption of postcopy.
The solution is to disable the empty zero page for KVM guests early on
and not during storage key enablement. With this change, the postcopy
migration process is guaranteed to start after no zero pages are left.
As guest pages are very likely not empty zero pages anyway the memory
overhead is also pretty small.
While at it this also adds proper page table locking to the zero page
removal.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit acf5e051ac upstream.
This patch adds the resources and DMI ID's for the MEN SC31,
which uses a different address region to map the LPC bus than
the one used for the existing SC24.
Signed-off-by: Michael Moese <michael.moese@men.de>
[jth add stable tag]
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4b5dde2d62 upstream.
mwifiex records information about various channels as it receives scan
information. It does this by appending to a buffer that was sized
to the max number of supported channels on any band, but there are
numerous problems:
(a) scans can return info from more than one band (e.g., both 2.4 and 5
GHz), so the determined "max" is not large enough
(b) some firmware appears to return multiple results for a given
channel, so the max *really* isn't large enough
(c) there is no bounds checking when stashing these stats, so problems
(a) and (b) can easily lead to buffer overflows
Let's patch this by setting a slightly-more-correct max (that accounts
for a combination of both 2.4G and 5G bands) and adding a bounds check
when writing to our statistics buffer.
Due to problem (b), we still might not properly report all known survey
information (e.g., with "iw <dev> survey dump"), since duplicate results
(or otherwise "larger than expected" results) will cause some
truncation. But that's a problem for a future bugfix.
(And because of this known deficiency, only log the excess at the WARN
level, since that isn't visible by default in this driver and would
otherwise be a bit too noisy.)
Fixes: bf35443314 ("mwifiex: channel statistics support for mwifiex")
Cc: Avinash Patil <patila@marvell.com>
Cc: Xinming Hu <huxm@marvell.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fc81bab5ee upstream.
_rtl_pci_find_adapter fail path will jump to label fail3 for
unsupported adapter types.
However, on course for fail3 there will be call rtl_deinit_core
before rtl_init_core.
For the inclusion of checking pci_iounmap this fail can be moved to
fail2.
Fixes
[ 4.492963] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 4.493067] IP: rtl_deinit_core+0x31/0x90 [rtlwifi]
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 293b915fd9 upstream.
Trackpoint buttons detection fails on ThinkPad 570 and 470 series,
this makes the middle button of the trackpoint to not being recogized.
As I don't believe there is any trackpoint with less than 3 buttons this
patch just assumes three buttons when the extended button information
read fails.
Signed-off-by: Oscar Campos <oscar.campos@member.fsf.org>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f35a7f91f6 upstream.
The rx ring buffers are added to a hash table if
firmware support full rx reorder. If the full rx
reorder support flag is not set before allocating
the rx ring buffers, none of the buffers are added
to the hash table.
There is a race condition between rx ring refill and
rx buffer replenish from napi poll. The interrupts are
enabled in hif start, before the rx ring is refilled during init.
We replenish buffers from napi poll due to the interrupts which
get enabled after hif start. Hence before the entire rx ring is
refilled during the init, the napi poll replenishes a few buffers
in steps of 100 buffers per attempt. During this rx ring replenish
from napi poll, the rx reorder flag has not been set due to which
the replenished buffers are not added to the hash table
Set the rx full reorder support flag before we allocate
the rx ring buffer to avoid the memory leak.
Signed-off-by: Rakesh Pillai <pillair@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0f9b011d33 upstream.
The .release function of driver_ktype is 'driver_release()'.
This function frees the container_of this kobject.
So, this memory must not be freed explicitly in the error handling path of
'bus_add_driver()'. Otherwise a double free will occur.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4744d4e2af upstream.
This driver assumes that the device is operating in the continuous
conversion mode which performs the conversion continuously. So this driver
inserts a wait time before reading the conversion register if the
configuration is changed from a previous request.
Currently, the wait time is only the period required for a single
conversion that is calculated as the reciprocal of the sampling frequency.
However we also need to wait for the the previous conversion to complete.
Otherwise we probably get the conversion result for the previous
configuration when the sampling frequency is lower.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a6fe5e52d5 upstream.
pm_runtime_get_sync() and pm_runtime_put_autosuspend() return 0 on
success, 1 if the device's runtime PM status was already requested status
or error code on failure. So a positive return value doesn't indicate an
error condition.
However, any non-zero return values from buffer preenable and postdisable
callbacks are recognized as an error and this driver reuses the return
value from pm_runtime_get_sync() and pm_runtime_put_autosuspend() in
these callbacks. This change fixes the false error detections.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 73e3e3fc50 upstream.
This driver assumes that the device is operating in the continuous
conversion mode which performs the conversion continuously. So this driver
doesn't insert a wait time before reading the conversion register if the
configuration is not changed from a previous request.
This assumption is broken if the device is runtime suspended and entered
a power-down state. The forthcoming request causes reading a stale result
from the conversion register as the device is runtime resumed just before.
Fix it by adding a flag to detect that condition and insert a necessary
wait time.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e8245c6835 upstream.
The ADS1015 device have two operating modes, continuous conversion mode
and single-shot mode. This driver assumes that the continuous conversion
mode is selected by runtime resume callback when the ADC result is
requested.
If CONFIG_PM is disabled, the device is always in the default single-shot
mode and no one begins a single conversion. So the conversion register
doesn't contain valid ADC result. Fix it by changing the continuous mode
in probe function.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8d0e8e7956 upstream.
The ti-ads1015 driver supports ADS1015 and ADS1115 devices. The same
scale information is used for both devices in this driver, however they
have actually different values and the ADS1115's one is not correct.
These devices have the same full-scale input voltage range for each PGA
selection. So instead of adding another hardcoded scale information,
compute a correct scale on demand from each device's resolution.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0d106b74c5 upstream.
The ti-ads1015 driver has eight iio voltage channels and each iio channel
can hold own sampling frequency information.
The ADS1015 device only have a single config register which contains an
input multiplexer selection, PGA and data rate settings. So the driver
should load the correct settings when the input multiplexer selection is
changed.
However, regardless of which channlel is currently selected, changing any
iio channel's sampling frequency information immediately overwrites the
current data rate setting in the config register.
It breaks the current data rate setting if the different channel's sampling
frequency information is changed because the data rate setting is not
reloaded when the input multiplexer is switched.
This removes the unexpected config register update and correctly load the
data rate setting before getting adc result.
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 34ff1bf492 upstream.
The mask of sns_key_info1 suggests the upper nybble is being extracted
however the following shift of 8 bits is too large and always results in
0. Fix this by shifting only by 4 bits to correctly get the upper nybble.
Detected by CoverityScan, CID#142891 ("Operands don't affect result")
Fixes: fa590c222f ("staging: rts5208: add support for rts5208 and rts5288")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ed62ca2f4f upstream.
While running reboot tests w/ a specific set of USB devices (and
slub_debug enabled), I found that once every few hours my device would
be crashed with a stack that looked like this:
[ 14.012445] BUG: spinlock bad magic on CPU#0, modprobe/2091
[ 14.012460] lock: 0xffffffc0cb055978, .magic: ffffffc0, .owner: cryption contexts: %lu/%lu
[ 14.012460] /1025536097, .owner_cpu: 0
[ 14.012466] CPU: 0 PID: 2091 Comm: modprobe Not tainted 4.4.79 #352
[ 14.012468] Hardware name: Google Kevin (DT)
[ 14.012471] Call trace:
[ 14.012483] [<....>] dump_backtrace+0x0/0x160
[ 14.012487] [<....>] show_stack+0x20/0x28
[ 14.012494] [<....>] dump_stack+0xb4/0xf0
[ 14.012500] [<....>] spin_dump+0x8c/0x98
[ 14.012504] [<....>] spin_bug+0x30/0x3c
[ 14.012508] [<....>] do_raw_spin_lock+0x40/0x164
[ 14.012515] [<....>] _raw_spin_lock_irqsave+0x64/0x74
[ 14.012521] [<....>] __wake_up+0x2c/0x60
[ 14.012528] [<....>] async_completed+0x2d0/0x300
[ 14.012534] [<....>] __usb_hcd_giveback_urb+0xc4/0x138
[ 14.012538] [<....>] usb_hcd_giveback_urb+0x54/0xf0
[ 14.012544] [<....>] xhci_irq+0x1314/0x1348
[ 14.012548] [<....>] usb_hcd_irq+0x40/0x50
[ 14.012553] [<....>] handle_irq_event_percpu+0x1b4/0x3f0
[ 14.012556] [<....>] handle_irq_event+0x4c/0x7c
[ 14.012561] [<....>] handle_fasteoi_irq+0x158/0x1c8
[ 14.012564] [<....>] generic_handle_irq+0x30/0x44
[ 14.012568] [<....>] __handle_domain_irq+0x90/0xbc
[ 14.012572] [<....>] gic_handle_irq+0xcc/0x18c
Investigation using kgdb() found that the wait queue that was passed
into wake_up() had been freed (it was filled with slub_debug poison).
I analyzed and instrumented the code and reproduced. My current
belief is that this is happening:
1. async_completed() is called (from IRQ). Moves "as" onto the
completed list.
2. On another CPU, proc_reapurbnonblock_compat() calls
async_getcompleted(). Blocks on spinlock.
3. async_completed() releases the lock; keeps running; gets blocked
midway through wake_up().
4. proc_reapurbnonblock_compat() => async_getcompleted() gets the
lock; removes "as" from completed list and frees it.
5. usbdev_release() is called. Frees "ps".
6. async_completed() finally continues running wake_up(). ...but
wake_up() has a pointer to the freed "ps".
The instrumentation that led me to believe this was based on adding
some trace_printk() calls in a select few functions and then using
kdb's "ftdump" at crash time. The trace follows (NOTE: in the trace
below I cheated a little bit and added a udelay(1000) in
async_completed() after releasing the spinlock because I wanted it to
trigger quicker):
<...>-2104 0d.h2 13759034us!: async_completed at start: as=ffffffc0cc638200
mtpd-2055 3.... 13759356us : async_getcompleted before spin_lock_irqsave
mtpd-2055 3d..1 13759362us : async_getcompleted after list_del_init: as=ffffffc0cc638200
mtpd-2055 3.... 13759371us+: proc_reapurbnonblock_compat: free_async(ffffffc0cc638200)
mtpd-2055 3.... 13759422us+: async_getcompleted before spin_lock_irqsave
mtpd-2055 3.... 13759479us : usbdev_release at start: ps=ffffffc0cc042080
mtpd-2055 3.... 13759487us : async_getcompleted before spin_lock_irqsave
mtpd-2055 3.... 13759497us!: usbdev_release after kfree(ps): ps=ffffffc0cc042080
<...>-2104 0d.h2 13760294us : async_completed before wake_up(): as=ffffffc0cc638200
To fix this problem we can just move the wake_up() under the ps->lock.
There should be no issues there that I'm aware of.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 082df8be45 upstream.
Make sure that the controller is runtime resumed when system suspending
to avoid an external abort when accessing the interrupt registers:
Unhandled fault: external abort on non-linefetch (0x1008) at 0xd025840a
...
[<c05481a4>] (musb_default_readb) from [<c0545abc>] (musb_disable_interrupts+0x84/0xa8)
[<c0545abc>] (musb_disable_interrupts) from [<c0546b08>] (musb_suspend+0x38/0xb8)
[<c0546b08>] (musb_suspend) from [<c04a57f8>] (platform_pm_suspend+0x3c/0x64)
This is easily reproduced on a BBB by enabling the peripheral port only
(as the host port may enable the shared clock) and keeping it
disconnected so that the controller is runtime suspended. (Well, you
would also need to the not-yet-merged am33xx-suspend patches by Dave
Gerlach to be able to suspend the BBB.)
This is a regression that was introduced by commit 1c4d0b4e18 ("usb:
musb: Remove pm_runtime_set_irq_safe") which allowed the parent glue
device to runtime suspend and thereby exposed a couple of older issues:
Register accesses without explicitly making sure the controller is
runtime resumed during suspend was first introduced by commit c338412b5d
("usb: musb: unconditionally save and restore the context on suspend")
in 3.14.
Commit a1fc1920aa ("usb: musb: core: make sure musb is in RPM_ACTIVE on
resume") later started setting the RPM status to active during resume,
and this was also implicitly relying on the parent always being active.
Since commit 71723f9546 ("PM / runtime: print error when activating a
child to unactive parent") this now also results in the following
warning:
musb-hdrc musb-hdrc.0: runtime PM trying to activate child device
musb-hdrc.0 but parent (47401400.usb) is not active
This patch has been verified on 4.13-rc2, 4.12 and 4.9 using a BBB
(the dsps glue would always be active also in 4.8).
Fixes: c338412b5d ("usb: musb: unconditionally save and restore the context on suspend")
Fixes: a1fc1920aa ("usb: musb: core: make sure musb is in RPM_ACTIVE on resume")
Fixes: 1c4d0b4e18 ("usb: musb: Remove pm_runtime_set_irq_safe")
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e6b422b88b upstream.
The following commit cause a regression on ATI chipsets.
'commit e788787ef4 ("usb:xhci:Add quirk for Certain
failing HP keyboard on reset after resume")'
This causes pinfo->smbus_dev to be wrongly set to NULL on
systems with the ATI chipset that this function checks for first.
Added conditional check for AMD chipsets to avoid the overwriting
pinfo->smbus_dev.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: e788787ef4 ("usb:xhci:Add quirk for Certain
failing HP keyboard on reset after resume")
cc: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <Sandeep.Singh@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a1279ef74e upstream.
Commit e0429362ab
("usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e")
introduced quirk to workaround an issue with some Logitech webcams.
Apparently model C920-C has the same issue so applying
the same quirk as well.
See aforementioned commit message for detailed explanation of the problem.
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit de3af5bf25 upstream.
Corsair Strafe RGB keyboard has trouble to initialize:
[ 1.679455] usb 3-6: new full-speed USB device number 4 using xhci_hcd
[ 6.871136] usb 3-6: unable to read config index 0 descriptor/all
[ 6.871138] usb 3-6: can't read configurations, error -110
[ 6.991019] usb 3-6: new full-speed USB device number 5 using xhci_hcd
[ 12.246642] usb 3-6: unable to read config index 0 descriptor/all
[ 12.246644] usb 3-6: can't read configurations, error -110
[ 12.366555] usb 3-6: new full-speed USB device number 6 using xhci_hcd
[ 17.622145] usb 3-6: unable to read config index 0 descriptor/all
[ 17.622147] usb 3-6: can't read configurations, error -110
[ 17.742093] usb 3-6: new full-speed USB device number 7 using xhci_hcd
[ 22.997715] usb 3-6: unable to read config index 0 descriptor/all
[ 22.997716] usb 3-6: can't read configurations, error -110
Although it may work after several times unpluging/pluging:
[ 68.195240] usb 3-6: new full-speed USB device number 11 using xhci_hcd
[ 68.337459] usb 3-6: New USB device found, idVendor=1b1c, idProduct=1b20
[ 68.337463] usb 3-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 68.337466] usb 3-6: Product: Corsair STRAFE RGB Gaming Keyboard
[ 68.337468] usb 3-6: Manufacturer: Corsair
[ 68.337470] usb 3-6: SerialNumber: 0F013021AEB8046755A93ED3F5001941
Tried three quirks: USB_QUIRK_DELAY_INIT, USB_QUIRK_NO_LPM and
USB_QUIRK_DEVICE_QUALIFIER, user confirmed that USB_QUIRK_DELAY_INIT alone
can workaround this issue. Hence add the quirk for Corsair Strafe RGB.
BugLink: https://bugs.launchpad.net/bugs/1678477
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 138e4ad67a upstream.
The race was introduced by me in commit 971316f050 ("epoll:
ep_unregister_pollwait() can use the freed pwq->whead"). I did not
realize that nothing can protect eventpoll after ep_poll_callback() sets
->whead = NULL, only whead->lock can save us from the race with
ep_free() or ep_remove().
Move ->whead = NULL to the end of ep_poll_callback() and add the
necessary barriers.
TODO: cleanup the ewake/EPOLLEXCLUSIVE logic, it was confusing even
before this patch.
Hopefully this explains use-after-free reported by syzcaller:
BUG: KASAN: use-after-free in debug_spin_lock_before
...
_raw_spin_lock_irqsave+0x4a/0x60 kernel/locking/spinlock.c:159
ep_poll_callback+0x29f/0xff0 fs/eventpoll.c:1148
this is spin_lock(eventpoll->lock),
...
Freed by task 17774:
...
kfree+0xe8/0x2c0 mm/slub.c:3883
ep_free+0x22c/0x2a0 fs/eventpoll.c:865
Fixes: 971316f050 ("epoll: ep_unregister_pollwait() can use the freed pwq->whead")
Reported-by: 范龙飞 <long7573@126.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit dea3eb8b45 upstream.
Using sg_miter_start and sg_miter_next, the buffer of an SG is kmap'ed
to *buff. The current code calls sg_miter_stop (and thus kunmap) on the
SG entry before the last access of *buff.
The patch moves the sg_miter_stop call after the last access to *buff to
ensure that the memory pointed to by *buff is still mapped.
Fixes: 4816c94064 ("lib/mpi: Fix SG miter leak")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
