A particular touchpad (SIPODEV SP1064) refuses to supply the HID
descriptors. This patch provides the framework for overriding these
descriptors based on DMI data. It also includes the descriptors for
said touchpad, which were extracted by listening to the traffic of the
windows filter driver, as well as the DMI data for the laptops known
to use this device.
Relevant Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1526312
Cc: Hans de Goede <hdegoede@redhat.com>
Reported-and-tested-by: ahormann@gmx.net
Reported-and-tested-by: Bruno Jesus <bruno.fl.jesus@gmail.com>
Reported-and-tested-by: Dietrich <enaut.w@googlemail.com>
Reported-and-tested-by: kloxdami@yahoo.com
Signed-off-by: Julian Sax <jsbc@gmx.de>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Currently wr_msg_ctl_info is used in ishtp_device just for list head
purpose, using list_head directly can save ~150 bytes size for
each replacement.
Also this patch can save ~170 bytes of code size in intel-ish-ipc.ko.
Signed-off-by: Hong Liu <hong.liu@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Use resource-managed api to simplify error handling in probe and
driver remove logic.
With this patch, we can save ~170 bytes code size in intel-ish-ipc.ko.
before:
text data bss dec hex filename
11495 1568 72 13135 334f intel-ish-ipc.ko
after:
text data bss dec hex filename
11327 1568 72 12967 32a7 intel-ish-ipc.ko
Signed-off-by: Hong Liu <hong.liu@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Added two APIs:
- ishtp_cl_get_tx_free_buffer_size:
This returns total size available for a client to queue TX data.
- ishtp_cl_get_tx_free_rings:
This returns total number of TX rings available for a client.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ishtp exposed helper ishtp_fw_cl_get_client() function for client
information searching, so switch to use it.
Signed-off-by: Even Xu <even.xu@intel.com>
Reviewed-by: Andriy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ishtp bus driver exposed helper functions for client buffer accessing,
so change to use these functions in ishtp-hid-client driver to avoid
access client buffer directly.
Signed-off-by: Even Xu <even.xu@intel.com>
Reviewed-by: Andriy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Use helper set/get function to set/get driver data in ishtp-hid-client
driver instead of directly accessing cl_device driver_data member.
Signed-off-by: Even Xu <even.xu@intel.com>
Reviewed-by: Andriy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Add helper function ishtp_set_drvdata() and ishtp_get_drvdata() for
different ISH client drivers to set/get private driver data.
Signed-off-by: Even Xu <even.xu@intel.com>
Reviewed-by: Andriy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull HID fixes from Jiri Kosina:
- functional regression fix for sensor-hub driver from Hans de Goede
- stop doing device reset for i2c-hid devices, which unbreaks some of
them (and is in line with the specification), from Kai-Heng Feng
- error handling fix for hid-core from Gustavo A. R. Silva
- functional regression fix for some Elan panels from Benjamin
Tissoires
- a few new device ID additions and misc small fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: i2c-hid: Don't reset device upon system resume
HID: sensor-hub: Restore fixup for Lenovo ThinkPad Helix 2 sensor hub report
HID: core: fix NULL pointer dereference
HID: core: fix grouping by application
HID: multitouch: fix Elan panels with 2 input modes declaration
HID: hid-saitek: Add device ID for RAT 7 Contagion
HID: core: fix memory leak on probe
HID: input: fix leaking custom input node name
HID: add support for Apple Magic Keyboards
HID: i2c-hid: Fix flooded incomplete report after S3 on Rayd touchscreen
HID: intel-ish-hid: Enable Sunrise Point-H ish driver
- Fix possible FD type confusion crash
- Fix a user trigger-able crash in cxgb4
- Fix bad handling of IOMMU resources causing user controlled leaking in
bnxt
- Add missing locking in ipoib to fix a rare 'stuck tx' situation
- Add missing locking in cma
- Add two missing missing uverbs cleanups on failure paths, regressions
from this merge window
- Fix a regression from this merge window that caused RDMA NFS to not work
with the mlx4 driver due to the max_sg changes
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"This fixes one major regression with NFS and mlx4 due to the max_sg
rework in this merge window, tidies a few minor error_path
regressions, and various small fixes.
The HFI1 driver is broken this cycle due to a regression caused by a
PCI change, it is looking like Bjorn will merge a fix for this. Also,
the lingering ipoib issue I mentioned earlier still remains unfixed.
Summary:
- Fix possible FD type confusion crash
- Fix a user trigger-able crash in cxgb4
- Fix bad handling of IOMMU resources causing user controlled leaking
in bnxt
- Add missing locking in ipoib to fix a rare 'stuck tx' situation
- Add missing locking in cma
- Add two missing missing uverbs cleanups on failure paths,
regressions from this merge window
- Fix a regression from this merge window that caused RDMA NFS to not
work with the mlx4 driver due to the max_sg changes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/mlx4: Ensure that maximal send/receive SGE less than supported by HW
RDMA/cma: Protect cma dev list with lock
RDMA/uverbs: Fix error cleanup path of ib_uverbs_add_one()
bnxt_re: Fix couple of memory leaks that could lead to IOMMU call traces
IB/ipoib: Avoid a race condition between start_xmit and cm_rep_handler
iw_cxgb4: only allow 1 flush on user qps
IB/core: Release object lock if destroy failed
RDMA/ucma: check fd type in ucma_migrate_id()
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for x86:
- Prevent multiplication result truncation on 32bit. Introduced with
the early timestamp reworrk.
- Ensure microcode revision storage to be consistent under all
circumstances
- Prevent write tearing of PTEs
- Prevent confusion of user and kernel reegisters when dumping fatal
signals verbosely
- Make an error return value in a failure path of the vector
allocation negative. Returning EINVAL might the caller assume
success and causes further wreckage.
- A trivial kernel doc warning fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Use WRITE_ONCE() when setting PTEs
x86/apic/vector: Make error return value negative
x86/process: Don't mix user/kernel regs in 64bit __show_regs()
x86/tsc: Prevent result truncation on 32bit
x86: Fix kernel-doc atomic.h warnings
x86/microcode: Update the new microcode revision unconditionally
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
Pull timekeeping fixes from Thomas Gleixner:
"Two fixes for timekeeping:
- Revert to the previous kthread based update, which is unfortunately
required due to lock ordering issues. The removal caused boot
failures on old Core2 machines. Add a proper comment why the thread
needs to stay to prevent accidental removal in the future.
- Fix a silly typo in a function declaration"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Revert "Remove kthread"
timekeeping: Fix declaration of read_persistent_wall_and_boot_offset()
Pull irqchip fix from Thomas Gleixner:
"A single fix to prevent allocating excessive memory in the GIC/ITS
driver.
While the subject of the patch might suggest otherwise this is a real
fix as some SoCs exceed the memory allocation limits and fail to boot"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint
Pull cpu hotplug fixes from Thomas Gleixner:
"Two fixes for the hotplug state machine code:
- Move the misplaces smb() in the hotplug thread function to the
proper place, otherwise a half update control struct could be
observed
- Prevent state corruption on error rollback, which causes the state
to advance by one and as a consequence skip it in the bringup
sequence"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Prevent state corruption on error rollback
cpu/hotplug: Adjust misplaced smb() in cpuhp_thread_fun()
initialize the CRNG is configurable via the boot option
random.trust_cpu={on,off}
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random driver fix from Ted Ts'o:
"Fix things so the choice of whether or not to trust RDRAND to
initialize the CRNG is configurable via the boot option
random.trust_cpu={on,off}"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: make CPU trust a boot parameter
- make setlocalversion more robust about -dirty check
- loosen the pkg-config requirement for Kconfig
- change missing depmod to a warning from an error
- warn modules_install when System.map is missing
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Merge tag 'kbuild-fixes-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- make setlocalversion more robust about -dirty check
- loosen the pkg-config requirement for Kconfig
- change missing depmod to a warning from an error
- warn modules_install when System.map is missing
* tag 'kbuild-fixes-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: modules_install: warn when missing System.map file
kbuild: make missing $DEPMOD a Warning instead of an Error
kconfig: do not require pkg-config on make {menu,n}config
kconfig: remove a spurious self-assignment
scripts/setlocalversion: git: Make -dirty check more robust
If there is no System.map file for "make modules_install",
scripts/depmod.sh will silently exit with success, having done
nothing. Since this is an unexpected situation, change it to
report a Warning for the missing file. The behavior is not
changed except for the Warning message.
The (previous) silent success and new Warning can be reproduced
by:
$ make mrproper; make defconfig
$ make modules; make modules_install
and since System.map is produced by "make vmlinux", the steps
above omit producing the System.map file.
Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
ARM:
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
s390:
- Fallout from the hugetlbfs support: pfmf interpretion and locking
- VSIE: fix keywrapping for nested guests
PPC:
- Fix a bug where pages might not get marked dirty, causing
guest memory corruption on migration,
- Fix a bug causing reads from guest memory to use the wrong guest
real address for very large HPT guests (>256G of memory), leading to
failures in instruction emulation.
x86:
- Fix out of bound access from malicious pv ipi hypercalls (introduced
in rc1)
- Fix delivery of pending interrupts when entering a nested guest,
preventing arbitrarily late injection
- Sanitize kvm_stat output after destroying a guest
- Fix infinite loop when emulating a nested guest page fault
and improve the surrounding emulation code
- Two minor cleanups
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"ARM:
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
s390:
- Fallout from the hugetlbfs support: pfmf interpretion and locking
- VSIE: fix keywrapping for nested guests
PPC:
- Fix a bug where pages might not get marked dirty, causing guest
memory corruption on migration
- Fix a bug causing reads from guest memory to use the wrong guest
real address for very large HPT guests (>256G of memory), leading
to failures in instruction emulation.
x86:
- Fix out of bound access from malicious pv ipi hypercalls
(introduced in rc1)
- Fix delivery of pending interrupts when entering a nested guest,
preventing arbitrarily late injection
- Sanitize kvm_stat output after destroying a guest
- Fix infinite loop when emulating a nested guest page fault and
improve the surrounding emulation code
- Two minor cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
KVM: LAPIC: Fix pv ipis out-of-bounds access
KVM: nVMX: Fix loss of pending IRQ/NMI before entering L2
arm64: KVM: Remove pgd_lock
KVM: Remove obsolete kvm_unmap_hva notifier backend
arm64: KVM: Only force FPEXC32_EL2.EN if trapping FPSIMD
KVM: arm/arm64: Clean dcache to PoC when changing PTE due to CoW
KVM: s390: Properly lock mm context allow_gmap_hpage_1m setting
KVM: s390: vsie: copy wrapping keys to right place
KVM: s390: Fix pfmf and conditional skey emulation
tools/kvm_stat: re-animate display of dead guests
tools/kvm_stat: indicate dead guests as such
tools/kvm_stat: handle guest removals more gracefully
tools/kvm_stat: don't reset stats when setting PID filter for debugfs
tools/kvm_stat: fix updates for dead guests
tools/kvm_stat: fix handling of invalid paths in debugfs provider
tools/kvm_stat: fix python3 issues
KVM: x86: Unexport x86_emulate_instruction()
KVM: x86: Rename emulate_instruction() to kvm_emulate_instruction()
KVM: x86: Do not re-{try,execute} after failed emulation in L2
KVM: x86: Default to not allowing emulation retry in kvm_mmu_page_fault
...
A few more fixes who have trickled in:
- MMC bus width fixup for some Allwinner platforms
- Fix for NULL deref in ti-aemif when no platform data is passed in
- Fix div by 0 in SCMI code
- Add a missing module alias in a new RPi driver
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A few more fixes who have trickled in:
- MMC bus width fixup for some Allwinner platforms
- Fix for NULL deref in ti-aemif when no platform data is passed in
- Fix div by 0 in SCMI code
- Add a missing module alias in a new RPi driver"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
memory: ti-aemif: fix a potential NULL-pointer dereference
firmware: arm_scmi: fix divide by zero when sustained_perf_level is zero
hwmon: rpi: add module alias to raspberrypi-hwmon
arm64: allwinner: dts: h6: fix Pine H64 MMC bus width
Just one fix for H6 mmc on the Pine H64: the mmc bus width was missing
from the device tree. This was added in 4.19-rc1.
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Merge tag 'sunxi-fixes-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Allwinner fixes for 4.19
Just one fix for H6 mmc on the Pine H64: the mmc bus width was missing
from the device tree. This was added in 4.19-rc1.
* tag 'sunxi-fixes-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
arm64: allwinner: dts: h6: fix Pine H64 MMC bus width
Signed-off-by: Olof Johansson <olof@lixom.net>
When page-table entries are set, the compiler might optimize their
assignment by using multiple instructions to set the PTE. This might
turn into a security hazard if the user somehow manages to use the
interim PTE. L1TF does not make our lives easier, making even an interim
non-present PTE a security hazard.
Using WRITE_ONCE() to set PTEs and friends should prevent this potential
security hazard.
I skimmed the differences in the binary with and without this patch. The
differences are (obviously) greater when CONFIG_PARAVIRT=n as more
code optimizations are possible. For better and worse, the impact on the
binary with this patch is pretty small. Skimming the code did not cause
anything to jump out as a security hazard, but it seems that at least
move_soft_dirty_pte() caused set_pte_at() to use multiple writes.
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180902181451.80520-1-namit@vmware.com
activate_managed() returns EINVAL instead of -EINVAL in case of
error. While this is unlikely to happen, the positive return value would
cause further malfunction at the call site.
Fixes: 2db1f959d9 ("x86/vector: Handle managed interrupts proper")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Pull i2c fixes from Wolfram Sang:
- bugfixes for uniphier, i801, and xiic drivers
- ID removal (never produced) for imx
- one MAINTAINER addition
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: xiic: Record xilinx i2c with Zynq fragment
i2c: xiic: Make the start and the byte count write atomic
i2c: i801: fix DNV's SMBCTRL register offset
i2c: imx-lpi2c: Remove mx8dv compatible entry
dt-bindings: imx-lpi2c: Remove mx8dv compatible entry
i2c: uniphier-f: issue STOP only for last message or I2C_M_STOP
i2c: uniphier: issue STOP only for last message or I2C_M_STOP
Fix the cell specification mechanism to allow cells to be pre-created
without having to specify at least one address (the addresses will be
upcalled for).
This allows the cell information preload service to avoid the need to issue
loads of DNS lookups during boot to get the addresses for each cell (500+
lookups for the 'standard' cell list[*]). The lookups can be done later as
each cell is accessed through the filesystem.
Also remove the print statement that prints a line every time a new cell is
added.
[*] There are 144 cells in the list. Each cell is first looked up for an
SRV record, and if that fails, for an AFSDB record. These get a list
of server names, each of which then has to be looked up to get the
addresses for that server. E.g.:
dig srv _afs3-vlserver._udp.grand.central.org
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull MD fixes from Shaohua Li:
- Fix a locking issue for md-cluster (Guoqing)
- Fix a sync crash for raid10 (Ni)
- Fix a reshape bug with raid5 cache enabled (me)
* tag 'md/4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md-cluster: release RESYNC lock after the last resync message
RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0
md/raid5-cache: disable reshape completely
went into -rc1 and a use-after-free fix.
The rbd changes have been sitting in a branch for quite a while but
couldn't be included into the -rc1 pull request because of a pending
wire protocol backwards compatibility fixup that only got committed
early this week.
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Merge tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two rbd patches to complete support for images within namespaces that
went into -rc1 and a use-after-free fix.
The rbd changes have been sitting in a branch for quite a while but
couldn't be included into the -rc1 pull request because of a pending
wire protocol backwards compatibility fixup that only got committed
early this week"
* tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client:
rbd: support cloning across namespaces
rbd: factor out get_parent_info()
ceph: avoid a use-after-free in ceph_destroy_options()
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Merge tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify fix from Jan Kara:
"A small fsnotify fix from Amir"
* tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: fix ignore mask logic in fsnotify()
- Remove accidental VM_WARN_ON
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
"Just one small fix here, preventing a VM_WARN_ON when a !present
PMD/PUD is "freed" as part of a huge ioremap() operation.
The correct behaviour is to skip the free silently in this case, which
is a little weird (the function is a bit of a misnomer), but it
follows the x86 implementation"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix erroneous warnings in page freeing functions
- Fix a power management regression in the ACPI driver for Intel
SoCs (LPSS) introduced by a system-wide suspend/resume fix during
the 4.18 cycle (Zhang Rui).
- Prevent dmi_check_system() from being called on non-x86 systems in
the ACPI core (Jean Delvare).
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Merge tag 'acpi-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a regression from the 4.18 cycle in the ACPI driver for
Intel SoCs (LPSS) and prevent dmi_check_system() from being called on
non-x86 systems in the ACPI core.
Specifics:
- Fix a power management regression in the ACPI driver for Intel SoCs
(LPSS) introduced by a system-wide suspend/resume fix during the
4.18 cycle (Zhang Rui).
- Prevent dmi_check_system() from being called on non-x86 systems in
the ACPI core (Jean Delvare)"
* tag 'acpi-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / LPSS: Force LPSS quirks on boot
ACPI / bus: Only call dmi_check_system() on X86
Just a few small fixes:
- a fix for the recursive work cancellation in a specific HD-audio
operation mode
- a fix for potentially uninitialized memory access via rawmidi
- the register bit access fixes for ASoC HD-audio
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Merge tag 'sound-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a few small fixes:
- a fix for the recursive work cancellation in a specific HD-audio
operation mode
- a fix for potentially uninitialized memory access via rawmidi
- the register bit access fixes for ASoC HD-audio"
* tag 'sound-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda: Fix several mismatch for register mask and value
ALSA: rawmidi: Initialize allocated buffers
ALSA: hda - Fix cancel_work_sync() stall from jackpoll work
Dan Carpenter reported that the untrusted data returns from kvm_register_read()
results in the following static checker warning:
arch/x86/kvm/lapic.c:576 kvm_pv_send_ipi()
error: buffer underflow 'map->phys_map' 's32min-s32max'
KVM guest can easily trigger this by executing the following assembly sequence
in Ring0:
mov $10, %rax
mov $0xFFFFFFFF, %rbx
mov $0xFFFFFFFF, %rdx
mov $0, %rsi
vmcall
As this will cause KVM to execute the following code-path:
vmx_handle_exit() -> handle_vmcall() -> kvm_emulate_hypercall() -> kvm_pv_send_ipi()
which will reach out-of-bounds access.
This patch fixes it by adding a check to kvm_pv_send_ipi() against map->max_apic_id,
ignoring destinations that are not present and delivering the rest. We also check
whether or not map->phys_map[min + i] is NULL since the max_apic_id is set to the
max apic id, some phys_map maybe NULL when apic id is sparse, especially kvm
unconditionally set max_apic_id to 255 to reserve enough space for any xAPIC ID.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Liran Alon <liran.alon@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
[Add second "if (min > map->max_apic_id)" to complete the fix. -Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Consider the case L1 had a IRQ/NMI event until it executed
VMLAUNCH/VMRESUME which wasn't delivered because it was disallowed
(e.g. interrupts disabled). When L1 executes VMLAUNCH/VMRESUME,
L0 needs to evaluate if this pending event should cause an exit from
L2 to L1 or delivered directly to L2 (e.g. In case L1 don't intercept
EXTERNAL_INTERRUPT).
Usually this would be handled by L0 requesting a IRQ/NMI window
by setting VMCS accordingly. However, this setting was done on
VMCS01 and now VMCS02 is active instead. Thus, when L1 executes
VMLAUNCH/VMRESUME we force L0 to perform pending event evaluation by
requesting a KVM_REQ_EVENT.
Note that above scenario exists when L1 KVM is about to enter L2 but
requests an "immediate-exit". As in this case, L1 will
disable-interrupts and then send a self-IPI before entering L2.
Reviewed-by: Nikita Leshchenko <nikita.leshchenko@oracle.com>
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
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Merge tag 'kvm-arm-fixes-for-v4.19-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
Fixes for KVM/ARM for Linux v4.19 v2:
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
The lock has never been used and the page tables are protected by
mmu_lock in struct kvm.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
kvm_unmap_hva is long gone, and we only have kvm_unmap_hva_range to
deal with. Drop the now obsolete code.
Fixes: fb1522e099 ("KVM: update to new mmu_notifier semantic v2")
Cc: James Hogan <jhogan@kernel.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
If trapping FPSIMD in the context of an AArch32 guest, it is critical
to set FPEXC32_EL2.EN to 1 so that the trapping is taken to EL2 and
not EL1.
Conversely, it is just as critical *not* to set FPEXC32_EL2.EN to 1
if we're not going to trap FPSIMD, as we then corrupt the existing
VFP state.
Moving the call to __activate_traps_fpsimd32 to the point where we
know for sure that we are going to trap ensures that we don't set that
bit spuriously.
Fixes: e6b673b741 ("KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing")
Cc: stable@vger.kernel.org # v4.18
Cc: Dave Martin <dave.martin@arm.com>
Reported-by: Alexander Graf <agraf@suse.de>
Tested-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
When triggering a CoW, we unmap the RO page via an MMU notifier
(invalidate_range_start), and then populate the new PTE using another
one (change_pte). In the meantime, we'll have copied the old page
into the new one.
The problem is that the data for the new page is sitting in the
cache, and should the guest have an uncached mapping to that page
(or its MMU off), following accesses will bypass the cache.
In a way, this is similar to what happens on a translation fault:
We need to clean the page to the PoC before mapping it. So let's just
do that.
This fixes a KVM unit test regression observed on a HiSilicon platform,
and subsequently reproduced on Seattle.
Fixes: a9c0e12ebe ("KVM: arm/arm64: Only clean the dcache on translation fault")
Cc: stable@vger.kernel.org # v4.16+
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Include xilinx soft i2c controller to Zynq fragment to make clear who is
responsible for it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Merge tag 'drm-fixes-2018-09-07' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Seems to have been overly quiet this week so I expect next week will
be more stuff, just one pull from Rodrigo with i915 fixes in it.
Quoting Rodrigo:
'The critical fix here on display side is the DP MST regression one.
But this pull also include fixes for DP SST, small VDSC register
fix and GVT's bucked with "BXT fixes, two guest warning fixes,
dmabuf format mod fix and one for recent multiple VM timeout
failure'."
* tag 'drm-fixes-2018-09-07' of git://anongit.freedesktop.org/drm/drm:
drm/i915/dp_mst: Fix enabling pipe clock for all streams
drm/i915/dsc: Fix PPS register definition macros for 2nd VDSC engine
drm/i915: Re-apply "Perform link quality check, unconditionally during long pulse"
drm/i915/gvt: Give new born vGPU higher scheduling chance
drm/i915/gvt: Fix drm_format_mod value for vGPU plane
drm/i915/gvt: move intel_runtime_pm_get out of spin_lock in stop_schedule
drm/i915/gvt: Handle GEN9_WM_CHICKEN3 with F_CMD_ACCESS.
drm/i915/gvt: Make correct handling to vreg BXT_PHY_CTL_FAMILY
drm/i915/gvt: emulate gen9 dbuf ctl register access
Pull m68knommu fix from Greg Ungerer:
"A single change to fix booting on ColdFire platforms that have RAM
starting at a non-0 address"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: fix early memory reservation for ColdFire MMU systems
But this pull also include fixes for DP SST, small VDSC register fix
and GVT's bucked with "BXT fixes, two guest warning fixes, dmabuf
format mod fix and one for recent multiple VM timeout failure."
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Merge tag 'drm-intel-fixes-2018-09-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
The critical fix here on display side is the DP MST regression one.
But this pull also include fixes for DP SST, small VDSC register fix
and GVT's bucked with "BXT fixes, two guest warning fixes, dmabuf
format mod fix and one for recent multiple VM timeout failure."
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905183000.GA2151@intel.com
for systems with dcache aliasing. Those systems could previously observe
stale data, causing clock_gettime() & gettimeofday() to return incorrect
values.
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Merge tag 'mips_fixes_4.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fix from Paul Burton:
"A single fix for v4.19-rc3, resolving a problem with our VDSO data
page for systems with dcache aliasing. Those systems could previously
observe stale data, causing clock_gettime() & gettimeofday() to return
incorrect values"
* tag 'mips_fixes_4.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: VDSO: Match data page cache colouring when D$ aliases
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Merge tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Four small SMB3 fixes, three for stable, and one minor debug
clarification"
* tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: connect to servername instead of IP for IPC$ share
smb3: check for and properly advertise directory lease support
smb3: minor debugging clarifications in rfc1001 len processing
SMB3: Backup intent flag missing for directory opens with backupuid mounts
fs/cifs: don't translate SFM_SLASH (U+F026) to backslash
I turns out that the silly spawn kthread from worker was actually needed.
clocksource_watchdog_kthread() cannot be called directly from
clocksource_watchdog_work(), because clocksource_select() calls
timekeeping_notify() which uses stop_machine(). One cannot use
stop_machine() from a workqueue() due lock inversions wrt CPU hotplug.
Revert the patch but add a comment that explain why we jump through such
apparently silly hoops.
Fixes: 7197e77abc ("clocksource: Remove kthread")
Reported-by: Siegfried Metz <frame@mailbox.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Tested-by: Kevin Shanahan <kevin@shanahan.id.au>
Tested-by: viktor_jaegerskuepper@freenet.de
Tested-by: Siegfried Metz <frame@mailbox.org>
Cc: rafael.j.wysocki@intel.com
Cc: len.brown@intel.com
Cc: diego.viola@gmail.com
Cc: rui.zhang@intel.com
Cc: bjorn.andersson@linaro.org
Link: https://lkml.kernel.org/r/20180905084158.GR24124@hirez.programming.kicks-ass.net
