Commit graph

767485 commits

Author SHA1 Message Date
Dongjiu Geng
be26b3a734 arm64: KVM: export the capability to set guest SError syndrome
For the arm64 RAS Extension, user space can inject a virtual-SError
with specified ESR. So user space needs to know whether KVM support
to inject such SError, this interface adds this query for this capability.

KVM will check whether system support RAS Extension, if supported, KVM
returns true to user space, otherwise returns false.

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
[expanded documentation wording]
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:31 +01:00
Dongjiu Geng
b7b27facc7 arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS
For the migrating VMs, user space may need to know the exception
state. For example, in the machine A, KVM make an SError pending,
when migrate to B, KVM also needs to pend an SError.

This new IOCTL exports user-invisible states related to SError.
Together with appropriate user space changes, user space can get/set
the SError exception state to do migrate/snapshot/suspend.

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
[expanded documentation wording]
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:30 +01:00
Christoffer Dall
327432c246 KVM: arm/arm64: vgic: Update documentation of the GIC devices wrt IIDR
Update the documentation to reflect the ordering requirements of
restoring the GICD_IIDR register before any other registers and the
effects this has on restoring the interrupt groups for an emulated GICv2
instance.

Also remove some outdated limitations in the documentation while we're
at it.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:30 +01:00
Christoffer Dall
32f8777ed9 KVM: arm/arm64: vgic: Let userspace opt-in to writable v2 IGROUPR
Simply letting IGROUPR be writable from userspace would break
migration from old kernels to newer kernels, because old kernels
incorrectly report interrupt groups as group 1.  This would not be a big
problem if userspace wrote GICD_IIDR as read from the kernel, because we
could detect the incompatibility and return an error to userspace.
Unfortunately, this is not the case with current userspace
implementations and simply letting IGROUPR be writable from userspace for
an emulated GICv2 silently breaks migration and causes the destination
VM to no longer run after migration.

We now encourage userspace to write the read and expected value of
GICD_IIDR as the first part of a GIC register restore, and if we observe
a write to GICD_IIDR we know that userspace has been updated and has had
a chance to cope with older kernels (VGICv2 IIDR.Revision == 0)
incorrectly reporting interrupts as group 1, and therefore we now allow
groups to be user writable.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:29 +01:00
Christoffer Dall
d53c2c29ae KVM: arm/arm64: vgic: Allow configuration of interrupt groups
Implement the required MMIO accessors for GICv2 and GICv3 for the
IGROUPR distributor and redistributor registers.

This can allow guests to change behavior compared to running on previous
versions of KVM, but only to align with the architecture and hardware
implementations.

This also allows userspace to configure the interrupts groups for GICv3.
We don't allow userspace to write the groups on GICv2 just yet, because
that would result in GICv2 guests not receiving interrupts after
migrating from an older kernel that exposes GICv2 interrupts as group 1.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:29 +01:00
Christoffer Dall
b489edc361 KVM: arm/arm64: vgic: Return error on incompatible uaccess GICD_IIDR writes
If userspace attempts to write a GICD_IIDR that does not match the
kernel version, return an error to userspace.  The intention is to allow
implementation changes inside KVM while avoiding silently breaking
migration resulting in guests not running without any clear indication
of what went wrong.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:28 +01:00
Christoffer Dall
c6e0917b67 KVM: arm/arm64: vgic: Permit uaccess writes to return errors
Currently we do not allow any vgic mmio write operations to fail, which
makes sense from mmio traps from the guest.  However, we should be able
to report failures to userspace, if userspace writes incompatible values
to read-only registers.  Rework the internal interface to allow errors
to be returned on the write side for userspace writes.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:27 +01:00
Christoffer Dall
8732209905 KVM: arm/arm64: vgic: Signal IRQs using their configured group
Now when we have a group configuration on the struct IRQ, use this state
when populating the LR and signaling interrupts as either group 0 or
group 1 to the VM.  Depending on the model of the emulated GIC, and the
guest's configuration of the VMCR, interrupts may be signaled as IRQs or
FIQs to the VM.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:26 +01:00
Christoffer Dall
8df3c8f33f KVM: arm/arm64: vgic: Add group field to struct irq
In preparation for proper group 0 and group 1 support in the vgic, we
add a field in the struct irq to store the group of all interrupts.

We initialize the group to group 0 when emulating GICv2 and to group 1
when emulating GICv3, just like we treat them today.  LPIs are always
group 1.  We also continue to ignore writes from the guest, preserving
existing functionality, for now.

Finally, we also add this field to the vgic debug logic to show the
group for all interrupts.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:24 +01:00
Christoffer Dall
dd6251e463 KVM: arm/arm64: vgic: GICv2 IGROUPR should read as zero
We currently don't support grouping in the emulated VGIC, which is a
known defect on KVM (not hurting any currently used guests as far as
we're aware). This is currently handled by treating all interrupts as
group 0 interrupts for an emulated GICv2 and always signaling interrupts
as group 0 to the virtual CPU interface.

However, when reading which group interrupts belongs to in the guest
from the emulated VGIC, the VGIC currently reports group 1 instead of
group 0, which is misleading.  Fix this temporarily before introducing
full group support by changing the hander to _raz instead of _rao.

Fixes: fb848db396 "KVM: arm/arm64: vgic-new: Add GICv2 MMIO handling framework"
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:22 +01:00
Christoffer Dall
aa075b0f30 KVM: arm/arm64: vgic: Keep track of implementation revision
As we are about to tweak implementation aspects of the VGIC emulation,
while still preserving some level of backwards compatibility support,
add a field to keep track of the implementation revision field which is
reported to the VM and to userspace.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:21 +01:00
Christoffer Dall
a2dca217da KVM: arm/arm64: vgic: Define GICD_IIDR fields for GICv2 and GIv3
Instead of hardcoding the shifts and masks in the GICD_IIDR register
emulation, let's add the definition of these fields to the GIC header
files and use them.

This will make things more obvious when we're going to bump the revision
in the IIDR when we'll make guest-visible changes to the implementation.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:19 +01:00
Marc Zyngier
9bc03f1df3 arm64: KVM: Cleanup tpidr_el2 init on non-VHE
When running on a non-VHE system, we initialize tpidr_el2 to
contain the per-CPU offset required to reach per-cpu variables.

Actually, we initialize it twice: the first time as part of the
EL2 initialization, by copying tpidr_el1 into its el2 counterpart,
and another time by calling into __kvm_set_tpidr_el2.

It turns out that the first part is wrong, as it includes the
distance between the kernel mapping and the linear mapping, while
EL2 only cares about the linear mapping. This was the last vestige
of the first per-cpu use of tpidr_el2 that came in with SDEI.
The only caller then was hyp_panic(), and its now using the
pc-relative get_host_ctxt() stuff, instead of kimage addresses
from the literal pool.

It is not a big deal, as we override it straight away, but it is
slightly confusing. In order to clear said confusion, let's
set this directly as part of the hyp-init code, and drop the
ad-hoc HYP helper.

Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:17 +01:00
Marc Zyngier
e294cb3a6d KVM: arm/arm64: vgic-debug: Show LPI status
The vgic debugfs file only knows about SGI/PPI/SPI interrupts, and
completely ignores LPIs. Let's fix that.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:16 +01:00
Kees Cook
2326aceebc KVM: arm64: vgic-its: Remove VLA usage
In the quest to remove all stack VLA usage from the kernel[1], this
switches to using a maximum size and adds sanity checks. Additionally
cleans up some of the int-vs-u32 usage and adds additional bounds checking.
As it currently stands, this will always be 8 bytes until the ABI changes.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Kees Cook <keescook@chromium.org>
[maz: dropped WARN_ONs]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:14 +01:00
Christoffer Dall
1d47191de7 KVM: arm/arm64: Fix vgic init race
The vgic_init function can race with kvm_arch_vcpu_create() which does
not hold kvm_lock() and we therefore have no synchronization primitives
to ensure we're doing the right thing.

As the user is trying to initialize or run the VM while at the same time
creating more VCPUs, we just have to refuse to initialize the VGIC in
this case rather than silently failing with a broken VCPU.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-21 16:02:07 +01:00
Marc Zyngier
de73708915 KVM: arm/arm64: Enable adaptative WFE trapping
Trapping blocking WFE is extremely beneficial in situations where
the system is oversubscribed, as it allows another thread to run
while being blocked. In a non-oversubscribed environment, this is
the complete opposite, and trapping WFE is just unnecessary overhead.

Let's only enable WFE trapping if the CPU has more than a single task
to run (that is, more than just the vcpu thread).

Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:38:24 +01:00
Marc Zyngier
0a72a5ab9f KVM: arm/arm64: Remove unnecessary CMOs when creating HYP page tables
There is no need to perform cache maintenance operations when
creating the HYP page tables if we have the multiprocessing
extensions. ARMv7 mandates them with the virtualization support,
and ARMv8 just mandates them unconditionally.

Let's remove these operations.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:42 +01:00
Marc Zyngier
0db9dd8a0f KVM: arm/arm64: Stop using the kernel's {pmd,pud,pgd}_populate helpers
The {pmd,pud,pgd}_populate accessors usage have always been a bit weird
in KVM. We don't have a struct mm to pass (and neither does the kernel
most of the time, but still...), and the 32bit code has all kind of
cache maintenance that doesn't make sense on ARMv7+ when MP extensions
are mandatory (which is the case when the VEs are present).

Let's bite the bullet and provide our own implementations. The only bit
of architectural code left has to do with building the table entry
itself (arm64 having up to 52bit PA, arm lacking PUD level).

Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:42 +01:00
Marc Zyngier
88dc25e8ea KVM: arm/arm64: Consolidate page-table accessors
The arm and arm64 KVM page tables accessors are pointlessly different
between the two architectures, and likely both wrong one way or another:
arm64 lacks a dsb(), and arm doesn't use WRITE_ONCE.

Let's unify them.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:42 +01:00
Marc Zyngier
2f6ea23f63 arm64: KVM: Avoid marking pages as XN in Stage-2 if CTR_EL0.DIC is set
On systems where CTR_EL0.DIC is set, we don't need to perform
icache invalidation to guarantee that we'll fetch the right
instruction stream.

This also means that taking a permission fault to invalidate the
icache is an unnecessary overhead.

On such systems, we can safely leave the page as being executable.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:42 +01:00
Marc Zyngier
09605e94c2 arm64: KVM: Handle Set/Way CMOs as NOPs if FWB is present
Set/Way handling is one of the ugliest corners of KVM. We shouldn't
have to handle that, but better safe than sorry.

Thankfully, FWB fixes this for us by not requiering any maintenance
(the guest is forced to use cacheable memory, no matter what it says,
and the whole system is garanteed to be cache coherent), which means
we don't have to emulate S/W CMOs, and don't have to track VM ops either.

We still have to trap S/W though, if only to prevent the guest from
doing something bad.

Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:41 +01:00
Marc Zyngier
e48d53a91f arm64: KVM: Add support for Stage-2 control of memory types and cacheability
Up to ARMv8.3, the combinaison of Stage-1 and Stage-2 attributes
results in the strongest attribute of the two stages.  This means
that the hypervisor has to perform quite a lot of cache maintenance
just in case the guest has some non-cacheable mappings around.

ARMv8.4 solves this problem by offering a different mode (FWB) where
Stage-2 has total control over the memory attribute (this is limited
to systems where both I/O and instruction fetches are coherent with
the dcache). This is achieved by having a different set of memory
attributes in the page tables, and a new bit set in HCR_EL2.

On such a system, we can then safely sidestep any form of dcache
management.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2018-07-09 11:37:41 +01:00
Linus Torvalds
1e4b044d22 Linux 4.18-rc4 2018-07-08 16:34:02 -07:00
Linus Torvalds
ca04b3cca1 ARM: SoC fixes for 4.18-rc
A small collection of fixes, sort of the usual at this point, all for
 i.MX or OMAP:
  - Enable ULPI drivers on i.MX to avoid a hang
  - Pinctrl fix for touchscreen on i.MX51 ZII RDU1
  - Fixes for ethernet clock references on am3517
  - mmc0 write protect detection fix for am335x
  - kzalloc->kcalloc conversion in an OMAP driver
  - USB metastability fix for USB on dra7
  - Fix touchscreen wakeup on am437x
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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 small collection of fixes, sort of the usual at this point, all for
  i.MX or OMAP:

   - Enable ULPI drivers on i.MX to avoid a hang

   - Pinctrl fix for touchscreen on i.MX51 ZII RDU1

   - Fixes for ethernet clock references on am3517

   - mmc0 write protect detection fix for am335x

   - kzalloc->kcalloc conversion in an OMAP driver

   - USB metastability fix for USB on dra7

   - Fix touchscreen wakeup on am437x"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: imx_v4_v5_defconfig: Select ULPI support
  ARM: imx_v6_v7_defconfig: Select ULPI support
  ARM: dts: omap3: Fix am3517 mdio and emac clock references
  ARM: dts: am335x-bone-common: Fix mmc0 Write Protect
  bus: ti-sysc: Use 2-factor allocator arguments
  ARM: dts: dra7: Disable metastability workaround for USB2
  ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl
  ARM: dts: am437x: make edt-ft5x06 a wakeup source
2018-07-08 14:12:46 -07:00
Linus Torvalds
23adbe6fb5 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/pti updates from Thomas Gleixner:
 "Two small fixes correcting the handling of SSB mitigations on AMD
  processors"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
  x86/bugs: Update when to check for the LS_CFG SSBD mitigation
2018-07-08 13:56:25 -07:00
Linus Torvalds
6f27a64092 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:

 - Prevent an out-of-bounds access in mtrr_write()

 - Break a circular dependency in the new hyperv IPI acceleration code

 - Address the build breakage related to inline functions by enforcing
   gnu_inline and explicitly bringing native_save_fl() out of line,
   which also adds a set of _ARM_ARG macros which provide 32/64bit
   safety.

 - Initialize the shadow CR4 per cpu variable before using it.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mtrr: Don't copy out-of-bounds data in mtrr_write
  x86/hyper-v: Fix the circular dependency in IPI enlightenment
  x86/paravirt: Make native_save_fl() extern inline
  x86/asm: Add _ASM_ARG* constants for argument registers to <asm/asm.h>
  compiler-gcc.h: Add __attribute__((gnu_inline)) to all inline declarations
  x86/mm/32: Initialize the CR4 shadow before __flush_tlb_all()
2018-07-08 13:26:55 -07:00
Linus Torvalds
6fb2489d7f Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:

 - The hopefully final fix for the reported race problems in
   kthread_parkme(). The previous attempt still left a hole and was
   partially wrong.

 - Plug a race in the remote tick mechanism which triggers a warning
   about updates not being done correctly. That's a false positive if
   the race condition is hit as the remote CPU is idle. Plug it by
   checking the condition again when holding run queue lock.

 - Fix a bug in the utilization estimation of a run queue which causes
   the estimation to be 0 when a run queue is throttled.

 - Advance the global expiration of the period timer when the timer is
   restarted after a idle period. Otherwise the expiry time is stale and
   the timer fires prematurely.

 - Cure the drift between the bandwidth timer and the runqueue
   accounting, which leads to bogus throttling of runqueues

 - Place the call to cpufreq_update_util() correctly so the function
   will observe the correct number of running RT tasks and not a stale
   one.

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kthread, sched/core: Fix kthread_parkme() (again...)
  sched/util_est: Fix util_est_dequeue() for throttled cfs_rq
  sched/fair: Advance global expiration when period timer is restarted
  sched/fair: Fix bandwidth timer clock drift condition
  sched/rt: Fix call to cpufreq_update_util()
  sched/nohz: Skip remote tick on idle task entirely
2018-07-08 12:41:23 -07:00
Linus Torvalds
f5c926b99e Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fix from Thomas Gleixner:
 "A single fix for objtool to address a bug in handling the cold
  subfunction detection for aliased functions which was added recently.
  The bug causes objtool to enter an infinite loop"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Support GCC 8 '-fnoreorder-functions'
2018-07-08 11:57:40 -07:00
Linus Torvalds
124b99fb80 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:

 - add missing RETs in x86 aegis/morus

 - fix build error in arm speck

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: x86 - Add missing RETs
  crypto: arm/speck - fix building in Thumb2 mode
2018-07-08 11:29:14 -07:00
Linus Torvalds
70a2dc6abc Bug fixes for ext4; most of which relate to vulnerabilities where a
maliciously crafted file system image can result in a kernel OOPS or
 hang.  At least one fix addresses an inline data bug could be
 triggered by userspace without the need of a crafted file system
 (although it does require that the inline data feature be enabled).
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 bugfixes from Ted Ts'o:
 "Bug fixes for ext4; most of which relate to vulnerabilities where a
  maliciously crafted file system image can result in a kernel OOPS or
  hang.

  At least one fix addresses an inline data bug could be triggered by
  userspace without the need of a crafted file system (although it does
  require that the inline data feature be enabled)"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: check superblock mapped prior to committing
  ext4: add more mount time checks of the superblock
  ext4: add more inode number paranoia checks
  ext4: avoid running out of journal credits when appending to an inline file
  jbd2: don't mark block as modified if the handle is out of credits
  ext4: never move the system.data xattr out of the inode body
  ext4: clear i_data in ext4_inode_info when removing inline data
  ext4: include the illegal physical block in the bad map ext4_error msg
  ext4: verify the depth of extent tree in ext4_find_extent()
  ext4: only look at the bg_flags field if it is valid
  ext4: make sure bitmaps and the inode table don't overlap with bg descriptors
  ext4: always check block group bounds in ext4_init_block_bitmap()
  ext4: always verify the magic number in xattr blocks
  ext4: add corruption check in ext4_xattr_set_entry()
  ext4: add warn_on_error mount option
2018-07-08 11:10:30 -07:00
Linus Torvalds
8979319f2d pci-v4.18-fixes-2
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Merge tag 'pci-v4.18-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix a use-after-free in the endpoint code (Dan Carpenter)

 - Stop defaulting CONFIG_PCIE_DW_PLAT_HOST to yes (Geert Uytterhoeven)

 - Fix an nfp regression caused by a change in how we limit the number
   of VFs we can enable (Jakub Kicinski)

 - Fix failure path cleanup issues in the new R-Car gen3 PHY support
   (Marek Vasut)

 - Fix leaks of OF nodes in faraday, xilinx-nwl, xilinx (Nicholas Mc
   Guire)

* tag 'pci-v4.18-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  nfp: stop limiting VFs to 0
  PCI/IOV: Reset total_VFs limit after detaching PF driver
  PCI: faraday: Add missing of_node_put()
  PCI: xilinx-nwl: Add missing of_node_put()
  PCI: xilinx: Add missing of_node_put()
  PCI: endpoint: Use after free in pci_epf_unregister_driver()
  PCI: controller: dwc: Do not let PCIE_DW_PLAT_HOST default to yes
  PCI: rcar: Clean up PHY init on failure
  PCI: rcar: Shut the PHY down in failpath
2018-07-08 10:55:21 -07:00
Linus Torvalds
b2d44d145d five smb3/cifs fixes for stable (including for some leaks and memory overwrites) and also a few fixes for recent regressions in packet signing
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Merge tag '4.18-rc3-smb3fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Five smb3/cifs fixes for stable (including for some leaks and memory
  overwrites) and also a few fixes for recent regressions in packet
  signing.

  Additional testing at the recent SMB3 test event, and some good work
  by Paulo and others spotted the issues fixed here. In addition to my
  xfstest runs on these, Aurelien and Stefano did additional test runs
  to verify this set"

* tag '4.18-rc3-smb3fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix stack out-of-bounds in smb{2,3}_create_lease_buf()
  cifs: Fix infinite loop when using hard mount option
  cifs: Fix slab-out-of-bounds in send_set_info() on SMB2 ACE setting
  cifs: Fix memory leak in smb2_set_ea()
  cifs: fix SMB1 breakage
  cifs: Fix validation of signed data in smb2
  cifs: Fix validation of signed data in smb3+
  cifs: Fix use after free of a mid_q_entry
2018-07-07 18:31:34 -07:00
Linus Torvalds
4f572efde4 Revert an incorrect dma-mapping commit for 4.18-rc
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Merge tag 'dma-mapping-4.18-3' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:
 "Revert an incorrect dma-mapping commit for 4.18-rc"

* tag 'dma-mapping-4.18-3' of git://git.infradead.org/users/hch/dma-mapping:
  Revert "iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent()"
2018-07-07 17:55:16 -07:00
Linus Torvalds
89ac2233d3 dmaengine fixes for v4.18-rc4
- Driver fixes for k3dma (off by one), pl330 (burst residue granularity)
    and omap-dma (incorrect residue_granularity)
  - Sinan's email update
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Merge tag 'dmaengine-fix-4.18-rc4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "We have few odd driver fixes and one email update change for you this
  time:

   - Driver fixes for k3dma (off by one), pl330 (burst residue
     granularity) and omap-dma (incorrect residue_granularity)

   - Sinan's email update"

* tag 'dmaengine-fix-4.18-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate()
  dmaengine: pl330: report BURST residue granularity
  MAINTAINERS: Update email-id of Sinan Kaya
  dmaengine: ti: omap-dma: Fix OMAP1510 incorrect residue_granularity
2018-07-07 17:29:08 -07:00
Linus Torvalds
ea9561cfc9 A couple of small fixes, one to the BMC side of things that fixes
an interrupt issue, and one oops fix if init fails in a certain
 way on the client driver.
 
 -corey
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Merge tag 'for-linus-4.18-2' of git://github.com/cminyard/linux-ipmi

Pull IPMI fixes from Corey Minyard:
 "A couple of small fixes: one to the BMC side of things that fixes an
  interrupt issue, and one oops fix if init fails in a certain way on
  the client driver"

* tag 'for-linus-4.18-2' of git://github.com/cminyard/linux-ipmi:
  ipmi: kcs_bmc: fix IRQ exception if the channel is not open
  ipmi: Cleanup oops on initialization failure
2018-07-07 17:15:38 -07:00
Linus Torvalds
43b6b6eca8 arm64 LDFLAGS clean-up:
- use aarch64elf instead of aarch64linux
 - move endianness options to LDFLAGS instead from LD
 - remove no-op '-p' linker flag
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 LDFLAGS clean-up from Catalin Marinas:

 - use aarch64elf instead of aarch64linux

 - move endianness options to LDFLAGS instead from LD

 - remove no-op '-p' linker flag

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: remove no-op -p linker flag
  arm64: add endianness option to LDFLAGS instead of LD
  arm64: Use aarch64elf and aarch64elfb emulation mode variants
2018-07-07 10:51:25 -07:00
Jann Horn
15279df6f2 x86/mtrr: Don't copy out-of-bounds data in mtrr_write
Don't access the provided buffer out of bounds - this can cause a kernel
out-of-bounds read when invoked through sys_splice() or other things that
use kernel_write()/__kernel_write().

Fixes: 7f8ec5a4f0 ("x86/mtrr: Convert to use strncpy_from_user() helper")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180706215003.156702-1-jannh@google.com
2018-07-07 18:58:41 +02:00
Linus Torvalds
624434af25 SCSI fixes on 20180706
This is two minor bug fixes (aacraid, target) and a fix for a
 potential exploit in the way sg handles teardown.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is two minor bug fixes (aacraid, target) and a fix for a
  potential exploit in the way sg handles teardown"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: sg: mitigate read/write abuse
  scsi: aacraid: Fix PD performance regression over incorrect qd being set
  scsi: target: Fix truncated PR-in ReadKeys response
2018-07-06 19:45:47 -07:00
Linus Torvalds
29119529d8 for-linus-20180706
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Merge tag 'for-linus-20180706' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Two minor fixes for this series:

   - add LOOP_SET_BLOCK_SIZE as compat ioctl (Evan Green)

   - drbd use-after-free fix (Lars Ellenberg)"

* tag 'for-linus-20180706' of git://git.kernel.dk/linux-block:
  loop: Add LOOP_SET_BLOCK_SIZE in compat ioctl
  drbd: fix access after free
2018-07-06 19:13:42 -07:00
Linus Torvalds
c2b58149d2 The usual collection of driver fixlets:
- Build cleanup/fix for the sunxi makefile that tried to save size
    but failed and prevented dead code elimination from working
 
  - Two Davinci clk driver fixes for a typo causing build failures
    in different configurations and an error check that checks
    the wrong variable.
 
  - Undo the DT ABI breaking imx6ul binding header shuffle that got
    merged this cycle.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "The usual collection of driver fixlets:

   - build cleanup/fix for the sunxi makefile that tried to save size
     but failed and prevented dead code elimination from working

   - two Davinci clk driver fixes for a typo causing build failures in
     different configurations and an error check that checks the wrong
     variable.

   - undo the DT ABI breaking imx6ul binding header shuffle that got
     merged this cycle"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  dt-bindings: clock: imx6ul: Do not change the clock definition order
  clk: davinci: fix a typo (which leads to build failures)
  clk: davinci: cfgchip: testing the wrong variable
  clk: sunxi-ng: replace lib-y with obj-y
2018-07-06 12:32:17 -07:00
Linus Torvalds
1bb155702d VFIO fixes for v4.18
- Make vfio-pci IGD extensions optional via Kconfig (Alex Williamson)
 
  - Remove unused and soon to be removed map_atomic callback from mbochs
    sample driver, add unmap callback to avoid dmabuf leaks (Gerd Hoffmann)
 
  - Fix usage of get_user_pages_longterm() (Jason Gunthorpe)
 
  - Fix sample mbochs driver vm_operations_struct.fault return type
    (Souptick Joarder)
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Merge tag 'vfio-v4.18-rc4' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Make vfio-pci IGD extensions optional via Kconfig (Alex Williamson)

 - Remove unused and soon to be removed map_atomic callback from mbochs
   sample driver, add unmap callback to avoid dmabuf leaks (Gerd
   Hoffmann)

 - Fix usage of get_user_pages_longterm() (Jason Gunthorpe)

 - Fix sample mbochs driver vm_operations_struct.fault return type
   (Souptick Joarder)

* tag 'vfio-v4.18-rc4' of git://github.com/awilliam/linux-vfio:
  sample/vfio-mdev: Change return type to vm_fault_t
  vfio: Use get_user_pages_longterm correctly
  sample/mdev/mbochs: add mbochs_kunmap_dmabuf
  sample/mdev/mbochs: remove mbochs_kmap_atomic_dmabuf
  vfio/pci: Make IGD support a configurable option
2018-07-06 12:23:53 -07:00
Linus Torvalds
b4d0562137 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "A few more changes for v4.18:

   - wire up the two new system calls io_pgetevents and rseq

   - fix a register corruption in the expolines code for machines
     without EXRL

   - drastically reduce the memory utilization of the dasd driver

   - fix reference counting for KVM page table pages"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: wire up rseq system call
  s390: wire up io_pgetevents system call
  s390/mm: fix refcount usage for 4K pgste
  s390/dasd: reduce the default queue depth and nr of hardware queues
  s390: Correct register corruption in critical section cleanup
2018-07-06 09:14:34 -07:00
K. Y. Srinivasan
1268ed0c47 x86/hyper-v: Fix the circular dependency in IPI enlightenment
The IPI hypercalls depend on being able to map the Linux notion of CPU ID
to the hypervisor's notion of the CPU ID. The array hv_vp_index[] provides
this mapping. Code for populating this array depends on the IPI functionality.
Break this circular dependency.

[ tglx: Use a proper define instead of '-1' with a u32 variable as pointed
  	out by Vitaly ]

Fixes: 68bb7bfb79 ("X86/Hyper-V: Enable IPI enlightenments")
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Cc: gregkh@linuxfoundation.org
Cc: devel@linuxdriverproject.org
Cc: olaf@aepfle.de
Cc: apw@canonical.com
Cc: jasowang@redhat.com
Cc: hpa@zytor.com
Cc: sthemmin@microsoft.com
Cc: Michael.H.Kelley@microsoft.com
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180703230155.15160-1-kys@linuxonhyperv.com
2018-07-06 12:32:59 +02:00
Linus Torvalds
c42c12a905 amdgpu, i915, exynos, udl, sii8620 and core fixes
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Merge tag 'drm-fixes-2018-07-06' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This is the drm fixes for rc4.

  It's a bit larger than I'd like but the exynos cleanups are pretty
  mechanical, and I'd rather have them in sooner rather than later so we
  can avoid too much conflicts around them. The non-mechanincal exynos
  changes are mostly fixes for new feature recently introduced.

  Apart from the exynos updates, we have:

  i915:
   - GVT and GGTT mapping fixes

  amdgpu:
   - fix HDMI2.0 4K@60 Hz regression
   - Hotplug fixes for dual-GPU laptops to make power management better
   - misc vega12 bios fixes, a race fix and some typos.

  sii8620 bridge:
   - small fixes around mode setting

  core:
   - use kvzalloc to allocate blob property memory"

* tag 'drm-fixes-2018-07-06' of git://anongit.freedesktop.org/drm/drm: (34 commits)
  drm/amd/display: add a check for display depth validity
  drm/amd/display: adding ycbcr420 pixel encoding for hdmi
  drm/udl: fix display corruption of the last line
  drm/bridge/sii8620: Fix link mode selection
  drm/bridge/sii8620: Fix display of packed pixel modes
  drm/bridge/sii8620: Send AVI infoframe in all MHL versions
  drm/amdgpu: fix user fence write race condition
  drm/i915: Try GGTT mmapping whole object as partial
  drm/amdgpu/pm: fix display count in non-DC path
  drm/amdgpu: fix swapped emit_ib_size in vce3
  drm: Use kvzalloc for allocating blob property memory
  drm/i915/gvt: changed DDI mode emulation type
  drm/i915/gvt: fix a bug of partially write ggtt enties
  drm/exynos: Replace drm_dev_unref with drm_dev_put
  drm/exynos: Replace drm_gem_object_unreference_unlocked with put function
  drm/exynos: Replace drm_framebuffer_{un/reference} with put,get functions
  drm/exynos: ipp: use correct enum type
  drm/exynos: decon5433: Fix WINCONx reset value
  drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes
  drm/exynos: fimc: Use real buffer width for configuring the hardware
  ...
2018-07-05 19:43:29 -07:00
Linus Torvalds
97f4e14229 While cleaning out my INBOX, I found a few patches that were lost
in the noise. These are minor bug fixes and clean ups. Those include:
 
  - Avoiding a string overflow
  - Code that didn't match the comment (but should)
  - A small code optimization (use of a conditional)
  - Quieting printf warnings
  - Nuking unused code
  - Fixing function graph interrupt annotation
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Merge tag 'trace-v4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes and cleanups from Steven Rostedt:
 "While cleaning out my INBOX, I found a few patches that were lost in
  the noise. These are minor bug fixes and clean ups. Those include:

   - avoid a string overflow

   - code that didn't match the comment (but should)

   - a small code optimization (use of a conditional)

   - quiet printf warnings

   - nuke unused code

   - fix function graph interrupt annotation"

* tag 'trace-v4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix missing return symbol in function_graph output
  ftrace: Nuke clear_ftrace_function
  tracing: Use __printf markup to silence compiler
  tracing: Optimize trace_buffer_iter() logic
  tracing: Make create_filter() code match the comments
  tracing: Avoid string overflow
2018-07-05 19:29:07 -07:00
Dave Airlie
c78d1f9d95 Fixups
- Fix several problems to IPPv2 merged to mainline recentely.
   . An align problem of width size that IPP driver incorrectly
     calculated the real buffer size.
   . Horizontal and vertical flip problem.
   . Per-plane global alpha for XRGB modes.
   . Incorrect variant of the YUV modes.
 - Fix plane overlapping problem.
   . The stange order of overlapping planes on XRGB modes
     by setting global alpha value to maximum value.
 
 Cleanup
 - Rename a enum type, drm_ipp_size_id, to one specific to Exynos,
   drm_exynos_ipp_limit_type.
 - Replace {un/reference} with {put,get} functions.
   . it replaces several reference/unreference functions with Linux
     kernel nameing standard.
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Merge tag 'exynos-drm-fixes-for-v4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

Fixups
- Fix several problems to IPPv2 merged to mainline recentely.
  . An align problem of width size that IPP driver incorrectly
    calculated the real buffer size.
  . Horizontal and vertical flip problem.
  . Per-plane global alpha for XRGB modes.
  . Incorrect variant of the YUV modes.
- Fix plane overlapping problem.
  . The stange order of overlapping planes on XRGB modes
    by setting global alpha value to maximum value.

Cleanup
- Rename a enum type, drm_ipp_size_id, to one specific to Exynos,
  drm_exynos_ipp_limit_type.
- Replace {un/reference} with {put,get} functions.
  . it replaces several reference/unreference functions with Linux
    kernel nameing standard.

Signed-off-by: Dave Airlie <airlied@redhat.com>

Link: https://patchwork.freedesktop.org/patch/msgid/1530512041-21392-1-git-send-email-inki.dae@samsung.com
2018-07-06 10:47:02 +10:00
Dave Airlie
c8440a70bd Merge branch 'drm-fixes-4.18' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
- Fix an HDMI 2.0 4k@60 regression
- Hotplug fixes for PX/HG laptops
- Fixes for vbios changes in vega12
- Fix a race in the user fence code
- Fix a couple of misc typos

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180705155206.2752-1-alexander.deucher@amd.com
2018-07-06 10:44:43 +10:00
Dave Airlie
0581a5cb06 A couple of GVT fixes, and a GGTT mmapping fix.
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Merge tag 'drm-intel-fixes-2018-07-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

A couple of GVT fixes, and a GGTT mmapping fix.

Signed-off-by: Dave Airlie <airlied@redhat.com>

Link: https://patchwork.freedesktop.org/patch/msgid/8736wxq35t.fsf@intel.com
2018-07-06 10:44:09 +10:00
Dave Airlie
b7716735bb Fixes for v4.18-rc4:
- A few small fixes for the sii8620 bridge.
 - Allocate blob property memory using kvzalloc instead of kmalloc.
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Merge tag 'drm-misc-fixes-2018-07-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Fixes for v4.18-rc4:
- A few small fixes for the sii8620 bridge.
- Allocate blob property memory using kvzalloc instead of kmalloc.

Signed-off-by: Dave Airlie <airlied@redhat.com>

Link: https://patchwork.freedesktop.org/patch/msgid/4267636e-bb7c-8f69-eeff-12e045b3e7e1@linux.intel.com
2018-07-06 10:41:29 +10:00