Some sync_state() implementations might need to call APIs that in turn
make calls to device link APIs. So, do the sync_state() callbacks
without holding the device link lock.
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20191114225646.251277-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry-pick from commit 26e77708fdhttps://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next)
Change-Id: I0787645c410137f9f91fb808675ccf7dd1b5a7c0
When a thread is being killed process_notifier() is called to record
the final accounting of the thread. But after that uid_cputime_show()
and add_uid_io_stats() can be called before the dying thread is
removed from the parent's thread_group resulting in double accounting.
This can cause the user and system time for a given UID to move
backwards in /proc/uid_cputime/show_uid_stat. That gives negative delta
times in KernelCpuUidUserSysTimeReader.readDeltaImpl() and it logs
an error:
"Negative user/sys time delta for UID=..."
One consequence of which was incorrectly calculated power consumptions
in BatteryStats.
With this change we avoid the double accounting by ignoring the thread
if it has the PF_EXITING flag set.
Bug: 144366911
Change-Id: I6b929e8f558cd81ce1c00481c8b550d24877aa2c
Signed-off-by: Rickard Möller <rickard.moller@sony.com>
Add support for parsing additional cea extension blocks
such as CEA HDR metadata block, VCDB block, Colorimetry
data block and VSVDB.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: Iae84749b816cd8bc0f598654c018cde475a31df9
Add additional drm mode flags to specify panel capability
to support command mode and video mode seamless transition.
Additionally, add mode flags to specify support for
YUV, RGB formats.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: Ifdc71a123f1f697ff9b5dbe6a6e2f557c3069060
DRM framework does not have upper bound on number of open
file descriptors, this resulted in exhaustion
of file descriptors while fuzzing. Also, adding a
upper bound on memory allocation for
drm_propert_blob structure.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I42bd3696371db6ae37789e3f7f43db045e166898
Add support for notfier of panel blank/unblank events.
This allows external drivers such as touch, backlight
drivers etc to subscribe to panel related events.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I3ac644c1c931b959a511ee4a999a417a4b7bdcd1
Add the definitions for various DPCD register offsets and
corresponding parameter values for DP Link compliance tests
for PHY audio/link training/link status tests.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: If6aa7d9b77e6234780086f27515c346b6495a46f
Add two dsi mode flag namely MIPI_DSI_MODE_VIDEO_BLLP
and MIPI_DSI_MODE_VIDEO_EOF_BLLP. MIPI_DSI_MODE_VIDEO_BLLP
flag is used when DSI is allowed to enter low power stop mode
during BLLP period, and MIPI_DSI_MODE_VIDEO_EOF_BLLP
is used when DSI is allowed to enter low power stop mode in
the BLLP area of the last line of a frame.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I54c1d0cc7a87d23054b82cfa975117f0590ca2d3
Add support into the drm_mipi_dsi framework to support
unicasting DCS commands to specific DSI controls within a panel.
This is required for partial update where region of interest
spans only on one controller in a dual controller configuration.
Also, Some display panel have the requirement of waiting for certain
duration before dsi host can read back the response from panel during
a DCS read command. This change adds the support to store
the delay required in dsi message structure.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I3a99437441410a2514f9486d08ae3ba68670769e
Increase drm property count from 24 to 64 to make
room for custom properties of drm plane and drm
crtc objects.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: I3e42c1fc684d7d7cea828fc35b96673bdef598f4
Add QCOM modifiers to support frame buffer size
calculations for linear and compressed tp10 format
and a5x tile pixel formats.
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>
Bug: 139653858
Change-Id: If2c5777514130f5f1dfeadf241af06b7adc9429c
Causes CONFIG_RELR to be enabled, resulting in a gki_defconfig image size
decrease of 2.2MB/10.3% uncompressed or 170KB/2.0% compressed.
Bug: 137200966
Change-Id: I85d36e346ca54bfc50aaca6804684b9bf16c47f0
Signed-off-by: Peter Collingbourne <pcc@google.com>
This is an intermediate (mid-week) merge of Linus's tree into
android-mainline to take all of the "big" security fixes that went into
there into the android-mainline tree to get testing happening sooner.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ie4d7914776ac1f917de0436061e46295ad919ead
DragonBoard 845c is currently crashing at boot time because the device
tree doesn't include the UFS crypto registers. There are likely to be
other issues with the crypto support that will need to be addressed too.
Disable crypto support in ufs-qcom until we can get it working properly.
Bug: 137270441
Change-Id: I54e32fa14431bbbe39f054cda20c646164c687f7
Signed-off-by: Eric Biggers <ebiggers@google.com>
HiKey960 doesn't play well with the inline crypto logic, and
seems to deviate from the UFS standard.
Eric Biggers noted:
"It declares that it has 32 crypto configurations (a.k.a.
keyslots), starting at offset 1280 from the start of the UFS
registers. Per the UFS standard, each crypto configuration is
128 bytes, so that means they go until offset 5376.
However, the device tree node for the UFS host controller (in
hi3660.dtsi) only declares 4096 bytes for the UFS standard
registers, and then the next 4096 physical bytes are declared to
be vendor-specific UFS registers. The ufs-hisi driver already
uses these vendor-specific registers to do things like reset the
UFS controller and configure the clocks. But if we follow the
UFS standard, the very same memory addresses have a different
meaning.
Also, even if I hardcode the number of keyslots to 22 so they fit
in the first 4096 bytes, then there is either an SError interrupt
while programming keyslot 0, or CRYPTO_GENERAL_ERROR is reported
from the UFS request."
So until we can understand the hardware better disable inline
crypto using the quirks flag in the driver.
Bug: 137270441
Change-Id: I69b1c10018bae9ac8ed2a32b02d253afbff64c34
Signed-off-by: John Stultz <john.stultz@linaro.org>
A number of devices (hikey960 and db845c at least) don't work
well with the inline crypto enablement, causing them to crash in
early boot.
In order to allow those boards to continue booting, add a
BROKEN_CRYPTO quirk flag that the drivers can enable until we
sort out how/if they can be fixed.
Bug: 137270441
Change-Id: I9f2c3d75412e0aaa22fe6e7c9929cd18b1efa9ba
Signed-off-by: John Stultz <john.stultz@linaro.org>
UFS initialization should carry on even if inline crypto support is
absent, instead of just erroring out.
Bug: 137270441
Change-Id: I4a508640f803dc8aaff1033b5e1d5c229a0b03de
Signed-off-by: Satya Tangirala <satyat@google.com>
This reverts commit 3fde1dfb00.
Revert to the upstream version by reinstating the original
modules-for-v5.4 merge.
Bug: 142892219
Bug: 144336692
Change-Id: I3871c67dd3cba0a5b9b2e1a87be8653a14cb9de5
Signed-off-by: Matthias Maennich <maennich@google.com>
This went into staging in rc7. It turns out that was a mistake, and
apparently it wasn't even supposed to go there at all, but be introduced
as a regular filesystem.
We don't try to sneak in whole new filesystems this late in the rc, just
delete the whole thing, and it can be re-introduced as a proper patch
with proper acks from actual filesystem people instead of some odd
late-rc staging back-door.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
VT-d posted interrupts, DAX/ZONE_DEVICE,
module unload/reload.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJdyrEsAAoJEL/70l94x66DIOkH/Asqrh4o4pwfRHWE+9rnM6PI
j8oFi7Q4eRXJnP4zEMnMbb6xD/BfSH1tWEcPcYgIxD/t0DFx8F92/xsETAJ/Qc5n
CWpmnhMkJqERlV+GSRuBqnheMo0CEH1Ab1QZKhh5U3//pK3OtGY9WyydJHWcquTh
bGh2pnxwVZOtIIEmclUUfKjyR2Fu8hJLnQwzWgYZ27UK7J2pLmiiTX0vwQG359Iq
sDn9ND33pCBW5e/D2mzccRjOJEvzwrumewM1sRDsoAYLJzUjg9+xD83vZDa1d7R6
gajCDFWVJbPoLvUY+DgsZBwMMlogElimJMT/Zft3ERbCsYJbFvcmwp4JzyxDxQ4=
=J6KN
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Fix unwinding of KVM_CREATE_VM failure, VT-d posted interrupts,
DAX/ZONE_DEVICE, and module unload/reload"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: MMU: Do not treat ZONE_DEVICE pages as being reserved
KVM: VMX: Introduce pi_is_pir_empty() helper
KVM: VMX: Do not change PID.NDST when loading a blocked vCPU
KVM: VMX: Consider PID.PIR to determine if vCPU has pending interrupts
KVM: VMX: Fix comment to specify PID.ON instead of PIR.ON
KVM: X86: Fix initialization of MSR lists
KVM: fix placement of refcount initialization
KVM: Fix NULL-ptr deref after kvm_create_vm fails
Pull x86 TSX Async Abort and iTLB Multihit mitigations from Thomas Gleixner:
"The performance deterioration departement is not proud at all of
presenting the seventh installment of speculation mitigations and
hardware misfeature workarounds:
1) TSX Async Abort (TAA) - 'The Annoying Affair'
TAA is a hardware vulnerability that allows unprivileged
speculative access to data which is available in various CPU
internal buffers by using asynchronous aborts within an Intel TSX
transactional region.
The mitigation depends on a microcode update providing a new MSR
which allows to disable TSX in the CPU. CPUs which have no
microcode update can be mitigated by disabling TSX in the BIOS if
the BIOS provides a tunable.
Newer CPUs will have a bit set which indicates that the CPU is not
vulnerable, but the MSR to disable TSX will be available
nevertheless as it is an architected MSR. That means the kernel
provides the ability to disable TSX on the kernel command line,
which is useful as TSX is a truly useful mechanism to accelerate
side channel attacks of all sorts.
2) iITLB Multihit (NX) - 'No eXcuses'
iTLB Multihit is an erratum where some Intel processors may incur
a machine check error, possibly resulting in an unrecoverable CPU
lockup, when an instruction fetch hits multiple entries in the
instruction TLB. This can occur when the page size is changed
along with either the physical address or cache type. A malicious
guest running on a virtualized system can exploit this erratum to
perform a denial of service attack.
The workaround is that KVM marks huge pages in the extended page
tables as not executable (NX). If the guest attempts to execute in
such a page, the page is broken down into 4k pages which are
marked executable. The workaround comes with a mechanism to
recover these shattered huge pages over time.
Both issues come with full documentation in the hardware
vulnerabilities section of the Linux kernel user's and administrator's
guide.
Thanks to all patch authors and reviewers who had the extraordinary
priviledge to be exposed to this nuisance.
Special thanks to Borislav Petkov for polishing the final TAA patch
set and to Paolo Bonzini for shepherding the KVM iTLB workarounds and
providing also the backports to stable kernels for those!"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs
Documentation: Add ITLB_MULTIHIT documentation
kvm: x86: mmu: Recovery of shattered NX large pages
kvm: Add helper function for creating VM worker threads
kvm: mmu: ITLB_MULTIHIT mitigation
cpu/speculation: Uninline and export CPU mitigations helpers
x86/cpu: Add Tremont to the cpu vulnerability whitelist
x86/bugs: Add ITLB_MULTIHIT bug infrastructure
x86/tsx: Add config options to set tsx=on|off|auto
x86/speculation/taa: Add documentation for TSX Async Abort
x86/tsx: Add "auto" option to the tsx= cmdline parameter
kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
x86/speculation/taa: Add sysfs reporting for TSX Async Abort
x86/speculation/taa: Add mitigation for TSX Async Abort
x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
x86/cpu: Add a helper function x86_read_arch_cap_msr()
x86/msr: Add the IA32_TSX_CTRL MSR
Explicitly exempt ZONE_DEVICE pages from kvm_is_reserved_pfn() and
instead manually handle ZONE_DEVICE on a case-by-case basis. For things
like page refcounts, KVM needs to treat ZONE_DEVICE pages like normal
pages, e.g. put pages grabbed via gup(). But for flows such as setting
A/D bits or shifting refcounts for transparent huge pages, KVM needs to
to avoid processing ZONE_DEVICE pages as the flows in question lack the
underlying machinery for proper handling of ZONE_DEVICE pages.
This fixes a hang reported by Adam Borowski[*] in dev_pagemap_cleanup()
when running a KVM guest backed with /dev/dax memory, as KVM straight up
doesn't put any references to ZONE_DEVICE pages acquired by gup().
Note, Dan Williams proposed an alternative solution of doing put_page()
on ZONE_DEVICE pages immediately after gup() in order to simplify the
auditing needed to ensure is_zone_device_page() is called if and only if
the backing device is pinned (via gup()). But that approach would break
kvm_vcpu_{un}map() as KVM requires the page to be pinned from map() 'til
unmap() when accessing guest memory, unlike KVM's secondary MMU, which
coordinates with mmu_notifier invalidations to avoid creating stale
page references, i.e. doesn't rely on pages being pinned.
[*] http://lkml.kernel.org/r/20190919115547.GA17963@angband.pl
Reported-by: Adam Borowski <kilobyte@angband.pl>
Analyzed-by: David Hildenbrand <david@redhat.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: stable@vger.kernel.org
Fixes: 3565fce3a6 ("mm, x86: get_user_pages() for dax mappings")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Streamline the PID.PIR check and change its call sites to use
the newly added helper.
Suggested-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When vCPU enters block phase, pi_pre_block() inserts vCPU to a per pCPU
linked list of all vCPUs that are blocked on this pCPU. Afterwards, it
changes PID.NV to POSTED_INTR_WAKEUP_VECTOR which its handler
(wakeup_handler()) is responsible to kick (unblock) any vCPU on that
linked list that now has pending posted interrupts.
While vCPU is blocked (in kvm_vcpu_block()), it may be preempted which
will cause vmx_vcpu_pi_put() to set PID.SN. If later the vCPU will be
scheduled to run on a different pCPU, vmx_vcpu_pi_load() will clear
PID.SN but will also *overwrite PID.NDST to this different pCPU*.
Instead of keeping it with original pCPU which vCPU had entered block
phase on.
This results in an issue because when a posted interrupt is delivered, as
the wakeup_handler() will be executed and fail to find blocked vCPU on
its per pCPU linked list of all vCPUs that are blocked on this pCPU.
Which is due to the vCPU being placed on a *different* per pCPU
linked list i.e. the original pCPU in which it entered block phase.
The regression is introduced by commit c112b5f502 ("KVM: x86:
Recompute PID.ON when clearing PID.SN"). Therefore, partially revert
it and reintroduce the condition in vmx_vcpu_pi_load() responsible for
avoiding changing PID.NDST when loading a blocked vCPU.
Fixes: c112b5f502 ("KVM: x86: Recompute PID.ON when clearing PID.SN")
Tested-by: Nathan Ni <nathan.ni@oracle.com>
Co-developed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 17e433b543 ("KVM: Fix leak vCPU's VMCS value into other pCPU")
introduced vmx_dy_apicv_has_pending_interrupt() in order to determine
if a vCPU have a pending posted interrupt. This routine is used by
kvm_vcpu_on_spin() when searching for a a new runnable vCPU to schedule
on pCPU instead of a vCPU doing busy loop.
vmx_dy_apicv_has_pending_interrupt() determines if a
vCPU has a pending posted interrupt solely based on PID.ON. However,
when a vCPU is preempted, vmx_vcpu_pi_put() sets PID.SN which cause
raised posted interrupts to only set bit in PID.PIR without setting
PID.ON (and without sending notification vector), as depicted in VT-d
manual section 5.2.3 "Interrupt-Posting Hardware Operation".
Therefore, checking PID.ON is insufficient to determine if a vCPU has
pending posted interrupts and instead we should also check if there is
some bit set on PID.PIR if PID.SN=1.
Fixes: 17e433b543 ("KVM: Fix leak vCPU's VMCS value into other pCPU")
Reviewed-by: Jagannathan Raman <jag.raman@oracle.com>
Co-developed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The Outstanding Notification (ON) bit is part of the Posted Interrupt
Descriptor (PID) as opposed to the Posted Interrupts Register (PIR).
The latter is a bitmap for pending vectors.
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The three MSR lists(msrs_to_save[], emulated_msrs[] and
msr_based_features[]) are global arrays of kvm.ko, which are
adjusted (copy supported MSRs forward to override the unsupported MSRs)
when insmod kvm-{intel,amd}.ko, but it doesn't reset these three arrays
to their initial value when rmmod kvm-{intel,amd}.ko. Thus, at the next
installation, kvm-{intel,amd}.ko will do operations on the modified
arrays with some MSRs lost and some MSRs duplicated.
So define three constant arrays to hold the initial MSR lists and
initialize msrs_to_save[], emulated_msrs[] and msr_based_features[]
based on the constant arrays.
Cc: stable@vger.kernel.org
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
[Remove now useless conditionals. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a DEFINE_SIMPLE_PROP macro to make it easy to add support for simple
properties with fixed names that just list phandles and phandle args.
Add a DEFINE_SUFFIX_PROP macro to make it easy to add support for
properties with fixes suffix that just list phandles and phandle args.
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191105065000.50407-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry-pick from commit a436ef4abahttps://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next)
Change-Id: I162bdb94191b0b556c86b0c519c74de4ef35c356
This reverts commit 87337fb791.
The patch I sent upstream to add iommu support is nicer than this and
also adds mboxes and io-channels support. So just revert this and pull
in the upstream patches to avoid conflicts and pull in support for
mboxes and io-channels.
Change-Id: I98ef50eb5cff310a5717d0fb78eceb04ff2510ec
Signed-off-by: Saravana Kannan <saravanak@google.com>
This fixes two different classes of bugs in the Intel graphics hardware:
MMIO register read hang:
"On Intels Gen8 and Gen9 Graphics hardware, a read of specific graphics
MMIO registers when the product is in certain low power states causes
a system hang.
There are two potential triggers for DoS:
a) H/W corruption of the RC6 save/restore vector
b) Hard hang within the MIPI hardware
This prevents the DoS in two areas of the hardware:
1) Detect corruption of RC6 address on exit from low-power state,
and if we find it corrupted, disable RC6 and RPM
2) Permanently lower the MIPI MMIO timeout"
Blitter command streamer unrestricted memory accesses:
"On Intels Gen9 Graphics hardware the Blitter Command Streamer (BCS)
allows writing to Memory Mapped Input Output (MMIO) that should be
blocked. With modifications of page tables, this can lead to privilege
escalation. This exposure is limited to the Guest Physical Address
space and does not allow for access outside of the graphics virtual
machine.
This series establishes a software parser into the Blitter command
stream to scan for, and prevent, reads or writes to MMIO's that should
not be accessible to non-privileged contexts.
Much of the command parser infrastructure has existed for some time,
and is used on Ivybridge/Haswell/Valleyview derived products to allow
the use of features normally blocked by hardware. In this legacy
context, the command parser is employed to allow normally unprivileged
submissions to be run with elevated privileges in order to grant
access to a limited set of extra capabilities. In this mode the parser
is optional; In the event that the parser finds any construct that it
cannot properly validate (e.g. nested command buffers), it simply
aborts the scan and submits the buffer in non-privileged mode.
For Gen9 Graphics, this series makes the parser mandatory for all
Blitter submissions. The incoming user buffer is first copied to a
kernel owned buffer, and parsed. If all checks are successful the
kernel owned buffer is mapped READ-ONLY and submitted on behalf of the
user. If any checks fail, or the parser is unable to complete the scan
(nested buffers), it is forcibly rejected. The successfully scanned
buffer is executed with NORMAL user privileges (key difference from
legacy usage).
Modern usermode does not use the Blitter on later hardware, having
switched over to using the 3D engine instead for performance reasons.
There are however some legacy usermode apps that rely on Blitter,
notably the SNA X-Server. There are no known usermode applications
that require nested command buffers on the Blitter, so the forcible
rejection of such buffers in this patch series is considered an
acceptable limitation"
* Intel graphics fixes in emailed bundle from Jon Bloomfield <jon.bloomfield@intel.com>:
drm/i915/cmdparser: Fix jump whitelist clearing
drm/i915/gen8+: Add RC6 CTX corruption WA
drm/i915: Lower RM timeout to avoid DSI hard hangs
drm/i915/cmdparser: Ignore Length operands during command matching
drm/i915/cmdparser: Add support for backward jumps
drm/i915/cmdparser: Use explicit goto for error paths
drm/i915: Add gen9 BCS cmdparsing
drm/i915: Allow parsing of unsized batches
drm/i915: Support ro ppgtt mapped cmdparser shadow buffers
drm/i915: Add support for mandatory cmdparsing
drm/i915: Remove Master tables from cmdparser
drm/i915: Disable Secure Batches for gen6+
drm/i915: Rename gen7 cmdparser tables
Pull cgroup fix from Tejun Heo:
"There's an inadvertent preemption point in ptrace_stop() which was
reliably triggering for a test scenario significantly slowing it down.
This contains Oleg's fix to remove the unwanted preemption point"
* 'for-5.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: freezer: call cgroup_enter_frozen() with preemption disabled in ptrace_stop()
Three small changes: two in the core and one in the qla2xxx
driver. The sg_tablesize fix affects a thinko in the migration to
blk-mq of certain legacy drivers which could cause an oops and the sd
core change should only affect zoned block devices which were wrongly
suppressing error messages for reset all zones.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXcmURyYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishV63APoCnP9P
kJP1Bp1fd7f91FrFaxY7sKH9VZqbioUtwUhE9AD/f0o5/gg/5jSIM90GKXdZYVpt
KIsIaQzVOPL3K7EaFDs=
=77IM
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three small changes: two in the core and one in the qla2xxx driver.
The sg_tablesize fix affects a thinko in the migration to blk-mq of
certain legacy drivers which could cause an oops and the sd core
change should only affect zoned block devices which were wrongly
suppressing error messages for reset all zones"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: Handle drivers which set sg_tablesize to zero
scsi: qla2xxx: fix NPIV tear down process
scsi: sd_zbc: Fix sd_zbc_complete()
When a jump_whitelist bitmap is reused, it needs to be cleared.
Currently this is done with memset() and the size calculation assumes
bitmaps are made of 32-bit words, not longs. So on 64-bit
architectures, only the first half of the bitmap is cleared.
If some whitelist bits are carried over between successive batches
submitted on the same context, this will presumably allow embedding
the rogue instructions that we're trying to reject.
Use bitmap_zero() instead, which gets the calculation right.
Fixes: f8c08d8fae ("drm/i915/cmdparser: Add support for backward jumps")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jon Bloomfield <jon.bloomfield@intel.com>
Reported by syzkaller:
=============================
WARNING: suspicious RCU usage
-----------------------------
./include/linux/kvm_host.h:536 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
no locks held by repro_11/12688.
stack backtrace:
Call Trace:
dump_stack+0x7d/0xc5
lockdep_rcu_suspicious+0x123/0x170
kvm_dev_ioctl+0x9a9/0x1260 [kvm]
do_vfs_ioctl+0x1a1/0xfb0
ksys_ioctl+0x6d/0x80
__x64_sys_ioctl+0x73/0xb0
do_syscall_64+0x108/0xaa0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Commit a97b0e773e (kvm: call kvm_arch_destroy_vm if vm creation fails)
sets users_count to 1 before kvm_arch_init_vm(), however, if kvm_arch_init_vm()
fails, we need to decrease this count. By moving it earlier, we can push
the decrease to out_err_no_arch_destroy_vm without introducing yet another
error label.
syzkaller source: https://syzkaller.appspot.com/x/repro.c?x=15209b84e00000
Reported-by: syzbot+75475908cd0910f141ee@syzkaller.appspotmail.com
Fixes: a97b0e773e ("kvm: call kvm_arch_destroy_vm if vm creation fails")
Cc: Jim Mattson <jmattson@google.com>
Analyzed-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reported by syzkaller:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14727 Comm: syz-executor.3 Not tainted 5.4.0-rc4+ #0
RIP: 0010:kvm_coalesced_mmio_init+0x5d/0x110 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:121
Call Trace:
kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3446 [inline]
kvm_dev_ioctl+0x781/0x1490 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3494
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x196/0x1150 fs/ioctl.c:696
ksys_ioctl+0x62/0x90 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:718
do_syscall_64+0xca/0x5d0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Commit 9121923c45 ("kvm: Allocate memslots and buses before calling kvm_arch_init_vm")
moves memslots and buses allocations around, however, if kvm->srcu/irq_srcu fails
initialization, NULL will be returned instead of error code, NULL will not be intercepted
in kvm_dev_ioctl_create_vm() and be dereferenced by kvm_coalesced_mmio_init(), this patch
fixes it.
Moving the initialization is required anyway to avoid an incorrect synchronize_srcu that
was also reported by syzkaller:
wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
__synchronize_srcu+0x197/0x250 kernel/rcu/srcutree.c:921
synchronize_srcu_expedited kernel/rcu/srcutree.c:946 [inline]
synchronize_srcu+0x239/0x3e8 kernel/rcu/srcutree.c:997
kvm_page_track_unregister_notifier+0xe7/0x130 arch/x86/kvm/page_track.c:212
kvm_mmu_uninit_vm+0x1e/0x30 arch/x86/kvm/mmu.c:5828
kvm_arch_destroy_vm+0x4a2/0x5f0 arch/x86/kvm/x86.c:9579
kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:702 [inline]
so do it.
Reported-by: syzbot+89a8060879fa0bd2db4f@syzkaller.appspotmail.com
Reported-by: syzbot+e27e7027eb2b80e44225@syzkaller.appspotmail.com
Fixes: 9121923c45 ("kvm: Allocate memslots and buses before calling kvm_arch_init_vm")
Cc: Jim Mattson <jmattson@google.com>
Cc: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 9acb7c07b6.
The root problem has now been fixed in 5.4-rc7, so revert this to
prevent merge issues.
Bug: 142182814
Cc: Quentin Perret <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
A set of fixes that have trickled in over the last couple of weeks:
- MAINTAINER update for Cavium/Marvell ThunderX2
- stm32 tweaks to pinmux for Joystick/Camera, and RAM allocation for CAN
interfaces
- i.MX fixes for voltage regulator GPIO mappings, fixes voltage scaling
issues
- More i.MX fixes for various issues on i.MX eval boards: interrupt
storm due to u-boot leaving pins in new states, fixing power button
config, a couple of compatible-string corrections.
- Powerdown and Suspend/Resume fixes for Allwinner A83-based tablets
- A few documentation tweaks and a fix of a memory leak in the reset
subsystem
-----BEGIN PGP SIGNATURE-----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=Ei7j
-----END PGP SIGNATURE-----
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
"A set of fixes that have trickled in over the last couple of weeks:
- MAINTAINER update for Cavium/Marvell ThunderX2
- stm32 tweaks to pinmux for Joystick/Camera, and RAM allocation for
CAN interfaces
- i.MX fixes for voltage regulator GPIO mappings, fixes voltage
scaling issues
- More i.MX fixes for various issues on i.MX eval boards: interrupt
storm due to u-boot leaving pins in new states, fixing power button
config, a couple of compatible-string corrections.
- Powerdown and Suspend/Resume fixes for Allwinner A83-based tablets
- A few documentation tweaks and a fix of a memory leak in the reset
subsystem"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
MAINTAINERS: update Cavium ThunderX2 maintainers
ARM: dts: stm32: change joystick pinctrl definition on stm32mp157c-ev1
ARM: dts: stm32: remove OV5640 pinctrl definition on stm32mp157c-ev1
ARM: dts: stm32: Fix CAN RAM mapping on stm32mp157c
ARM: dts: stm32: relax qspi pins slew-rate for stm32mp157
arm64: dts: zii-ultra: fix ARM regulator GPIO handle
ARM: sunxi: Fix CPU powerdown on A83T
ARM: dts: sun8i-a83t-tbs-a711: Fix WiFi resume from suspend
arm64: dts: imx8mn: fix compatible string for sdma
arm64: dts: imx8mm: fix compatible string for sdma
reset: fix reset_control_ops kerneldoc comment
ARM: dts: imx6-logicpd: Re-enable SNVS power key
soc: imx: gpc: fix initialiser format
ARM: dts: imx6qdl-sabreauto: Fix storm of accelerometer interrupts
arm64: dts: ls1028a: fix a compatible issue
reset: fix reset_control_get_exclusive kerneldoc comment
reset: fix reset_control_lookup kerneldoc comment
reset: fix of_reset_control_get_count kerneldoc comment
reset: fix of_reset_simple_xlate kerneldoc comment
reset: Fix memory leak in reset_control_array_put()
Here is a mix of a number of IIO driver fixes for 5.4-rc7, and a whole
new staging driver.
The IIO fixes resolve some reported issues, all are tiny.
The staging driver addition is the vboxsf filesystem, which is the
VirtualBox guest shared folder code. Hans has been trying to get
filesystem reviewers to review the code for many months now, and
Christoph finally said to just merge it in staging now as it is
stand-alone and the filesystem people can review it easier over time
that way.
I know it's late for this big of an addition, but it is stand-alone.
The code has been in linux-next for a while, long enough to pick up a
few tiny fixes for it already so people are looking at it.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXcgvVg8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylt6gCdG1hmZiOXhmoO1HBBFILqJkrzEVEAn3amZIJJ
n0gz5/FDfQVFGl/PpKCE
=u/mY
-----END PGP SIGNATURE-----
Merge tag 'staging-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull IIO fixes and staging driver from Greg KH:
"Here is a mix of a number of IIO driver fixes for 5.4-rc7, and a whole
new staging driver.
The IIO fixes resolve some reported issues, all are tiny.
The staging driver addition is the vboxsf filesystem, which is the
VirtualBox guest shared folder code. Hans has been trying to get
filesystem reviewers to review the code for many months now, and
Christoph finally said to just merge it in staging now as it is
stand-alone and the filesystem people can review it easier over time
that way.
I know it's late for this big of an addition, but it is stand-alone.
The code has been in linux-next for a while, long enough to pick up a
few tiny fixes for it already so people are looking at it.
All of these have been in linux-next with no reported issues"
* tag 'staging-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: Fix error return code in vboxsf_fill_super()
staging: vboxsf: fix dereference of pointer dentry before it is null checked
staging: vboxsf: Remove unused including <linux/version.h>
staging: Add VirtualBox guest shared folder (vboxsf) support
iio: adc: stm32-adc: fix stopping dma
iio: imu: inv_mpu6050: fix no data on MPU6050
iio: srf04: fix wrong limitation in distance measuring
iio: imu: adis16480: make sure provided frequency is positive
Here are a number of late-arrival driver fixes for issues reported for
some char/misc drivers for 5.4-rc7
These all come from the different subsystem/driver maintainers as things
that they had reports for and wanted to see fixed.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXcguaA8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+yk9agCdHawCyOWaCfWrUF+66DfI0ql5HhQAoKI0n4yT
7N8GuJ5KsVKmtkkg9Oww
=CZY+
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are a number of late-arrival driver fixes for issues reported for
some char/misc drivers for 5.4-rc7
These all come from the different subsystem/driver maintainers as
things that they had reports for and wanted to see fixed.
All of these have been in linux-next with no reported issues"
* tag 'char-misc-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
intel_th: pci: Add Jasper Lake PCH support
intel_th: pci: Add Comet Lake PCH support
intel_th: msu: Fix possible memory leak in mode_store()
intel_th: msu: Fix overflow in shift of an unsigned int
intel_th: msu: Fix missing allocation failure check on a kstrndup
intel_th: msu: Fix an uninitialized mutex
intel_th: gth: Fix the window switching sequence
soundwire: slave: fix scanf format
soundwire: intel: fix intel_register_dai PDI offsets and numbers
interconnect: Add locking in icc_set_tag()
interconnect: qcom: Fix icc_onecell_data allocation
soundwire: depend on ACPI || OF
soundwire: depend on ACPI
thunderbolt: Drop unnecessary read when writing LC command in Ice Lake
thunderbolt: Fix lockdep circular locking depedency warning
thunderbolt: Read DP IN adapter first two dwords in one go
- fix a regression from this merge window in the configfs
symlink handling (Honggang Li)
-----BEGIN PGP SIGNATURE-----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=kgn+
-----END PGP SIGNATURE-----
Merge tag 'configfs-for-5.4-2' of git://git.infradead.org/users/hch/configfs
Pull configfs regression fix from Christoph Hellwig:
"Fix a regression from this merge window in the configfs symlink
handling (Honggang Li)"
* tag 'configfs-for-5.4-2' of git://git.infradead.org/users/hch/configfs:
configfs: calculate the depth of parent item
Pull x86 fixes from Thomas Gleixner:
"A small set of fixes for x86:
- Make the tsc=reliable/nowatchdog command line parameter work again.
It was broken with the introduction of the early TSC clocksource.
- Prevent the evaluation of exception stacks before they are set up.
This causes a crash in dumpstack because the stack walk termination
gets screwed up.
- Prevent a NULL pointer dereference in the rescource control file
system.
- Avoid bogus warnings about APIC id mismatch related to the LDR
which can happen when the LDR is not in use and therefore not
initialized. Only evaluate that when the APIC is in logical
destination mode"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tsc: Respect tsc command line paraemeter for clocksource_tsc_early
x86/dumpstack/64: Don't evaluate exception stacks before setup
x86/apic/32: Avoid bogus LDR warnings
x86/resctrl: Prevent NULL pointer dereference when reading mondata
Pull timer fixes from Thomas Gleixner:
"A small set of fixes for timekeepoing and clocksource drivers:
- VDSO data was updated conditional on the availability of a VDSO
capable clocksource. This causes the VDSO functions which do not
depend on a VDSO capable clocksource to operate on stale data.
Always update unconditionally.
- Prevent a double free in the mediatek driver
- Use the proper helper in the sh_mtu2 driver so it won't attempt to
initialize non-existing interrupts"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping/vsyscall: Update VDSO data unconditionally
clocksource/drivers/sh_mtu2: Do not loop using platform_get_irq_by_name()
clocksource/drivers/mediatek: Fix error handling
Pull scheduler fixes from Thomas Gleixner:
"Two fixes for scheduler regressions:
- Plug a subtle race condition which was introduced with the rework
of the next task selection functionality. The change of task
properties became unprotected which can be observed inconsistently
causing state corruption.
- A trivial compile fix for CONFIG_CGROUPS=n"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix pick_next_task() vs 'change' pattern race
sched/core: Fix compilation error when cgroup not selected
Pull perf tooling fixes from Thomas Gleixner:
- Fix the time sorting algorithm which was broken due to truncation of
big numbers
- Fix the python script generator fail caused by a broken tracepoint
array iterator
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Fix time sorting
perf tools: Remove unused trace_find_next_event()
perf scripting engines: Iterate on tep event arrays directly
