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
-----BEGIN PGP SIGNATURE-----
iQEcBAABCAAGBQJbk5gAAAoJEED/6hsPKofoS0UH/1clCzg/8x3jhpDcKKp6tDm7
9XHOOQ6XmydT0HXYJNqZepGNqU99ip+2u4x8E9LCT5MTvTMZ1BcNM6PmenjJVULY
GMJtwZhjqoklrOcNkXGqIye4Ec+I0pBuMmt0AN0N85CcHO8VUBpMzsdxgJLuxcRm
UT6OZnCLyJsock6BqkZmqVsJj/gemFnI9MpudnrU8cCFk60roXmQWJ66fMIFfKjt
q0R61t8nmbapQKE8pjqBNgbCsuotVOtU1zgMkeM5LkaYEfc65ZPdgt3sdpyG8Guq
WA7Vt6HEvmNrcQxHFX5P0GxTVM9lOVCUx1bKXE4+57CMZOYl/8hDaTudlcacutg=
=FyuN
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----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=oZbn
-----END PGP SIGNATURE-----
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.
-----BEGIN PGP SIGNATURE-----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=WbHO
-----END PGP SIGNATURE-----
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
According to the documentation in msg_zerocopy.rst, the SO_ZEROCOPY
flag was introduced because send(2) ignores unknown message flags and
any legacy application which was accidentally passing the equivalent of
MSG_ZEROCOPY earlier should not see any new behaviour.
Before commit f214f915e7 ("tcp: enable MSG_ZEROCOPY"), a send(2) call
which passed the equivalent of MSG_ZEROCOPY without setting SO_ZEROCOPY
would succeed. However, after that commit, it fails with -ENOBUFS. So
it appears that the SO_ZEROCOPY flag fails to fulfill its intended
purpose. Fix it.
Fixes: f214f915e7 ("tcp: enable MSG_ZEROCOPY")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When nla_put*() fails after nla_nest_start(), we need
to call nla_nest_cancel() to cancel the message, otherwise
we end up calling nla_nest_end() like a success.
Fixes: 0ed5269f9e ("net/sched: add tunnel option support to act_tunnel_key")
Cc: Davide Caratti <dcaratti@redhat.com>
Cc: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 822fb18a82 ("xen-netfront: wait xenbus state change when load
module manually") added a new wait queue to wait on for a state change
when the module is loaded manually. Unfortunately there is no wakeup
anywhere to stop that waiting.
Instead of introducing a new wait queue rename the existing
module_unload_q to module_wq and use it for both purposes (loading and
unloading).
As any state change of the backend might be intended to stop waiting
do the wake_up_all() in any case when netback_changed() is called.
Fixes: 822fb18a82 ("xen-netfront: wait xenbus state change when load module manually")
Cc: <stable@vger.kernel.org> #4.18
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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>
Commit 3559d81e76 ("r8169: simplify rtl_hw_start_8169") changed order of
two register writes:
1) Caused RxConfig to be written before TX / RX is enabled,
2) Caused TxConfig to be written before TX / RX is enabled.
At least on XIDs 10000000 ("RTL8169sb/8110sb") and
18000000 ("RTL8169sc/8110sc") such writes are ignored by the chip, leaving
values in these registers intact.
Change 1) was reverted by
commit 05212ba813 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices"),
however change 2) wasn't.
In practice, this caused TxConfig's "InterFrameGap time" and "Max DMA Burst
Size per Tx DMA Burst" bits to be zero dramatically reducing TX performance
(in my tests it dropped from around 500Mbps to around 50Mbps).
This patch fixes the issue by moving TxConfig register write a bit later in
the code so it happens after TX / RX is already enabled.
Fixes: 05212ba813 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices")
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAluSrJYTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi/N8B/4sZzRCJMCejvU/yRq91NlaPDrxbVHh
nfICZ/8Fsy/fmvK8NWNyHcCIWx+nWrbCvCJMj0fxWMhk/1t75yC+TdyCJnyuhsQU
V/CPTs9BTdwrSUiTB83/n/ukGL6mpESk0CQ1er/l1EO6FnNOXvgzHDnCqUQZLdzU
1aRcx5JQWWo/QlCmzt2KWENhfQRMvLAtf04F5cUuR+JTrMjwWia6MAuRGuOhVQkW
XIlFNakBKab89Vod1pmA7BrG/+sHXCpVGX6sjAp9vQUWO3WWKBRnNtVwo9dPSHah
hBR8IzOkihw7HfTlINWVpiR69nTfM80PQHXJkFSp36E6Sfq8EShRpFIZ
=pga5
-----END PGP SIGNATURE-----
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()
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAluSNfQACgkQnJ2qBz9k
QNloSAf/RpsqUnmQvJKK7hQUVNMCQP/Kf3KND5iN5RfMbhU9r7tzERkNvqhdA6QZ
uoPi8dEecI+ihY5F8ddyw1Chaou4MToWKdNz4ojwJXVrN6bb+pq+xj0hTvT5FjFh
iM1JXHtSEk6W+CnXPE5CycrZppIHxJfJxeaWg7av5Zyc4nkTesxtG8PycMBxROW8
detUcJt15VGBswi19udztf7XY/lwDwUQ9LwC0W5B+o8pKIwuN3ENMVVOeAriAyoy
hXTpPA8twBhM7i8D/1eppDCkYLTr08bquNsDpn8kUEf2RxcxiFJuDLOeXiH3sQRq
BZmf/QIIRA8R+SPeFiuxY/795FDC6Q==
=CWu1
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABCgAGBQJbkorgAAoJELescNyEwWM0my8IAKsVsc5heKBeL/0Ep5gfXJLS
H3kjkToFKfOeVADLfZXfTkPzlx9f1NrEP4+b/hQYgqGqXQcvCIwEXzpTMFg4pT4/
ERhYtq9qYBNQmg4AZnTHl2cKSRFt+s7knTZMoTEwNk1NxdBQAtbIZa9HB9Ly2mSn
xK6UP7zsZvRcY02BlyDQ0A/QBjzQAi3I83FRLizxjPYaSUhF0QqhrzTr0ANoKEjv
DnX04nJEMYqLEjSKWTn3rzot2PgLVDcMEjXKwMB3XB6LML3KLRUsvnTpxED5c+dW
tv+wzKKdaFeHWmfFxUgYZXSd4igh0IKf3OZDohRKz+lNOhKrTYUE35dtFyyw04I=
=xYN8
-----END PGP SIGNATURE-----
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).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQIcBAABCAAGBQJbkjqmAAoJEILEb/54YlRxUn0QAKNCccsWcBnli0OkFKQNvgHN
cSq8sBLi6PoBULbkOKXgUPxjOajoeJ4I4YyZUIKD8sj4MJyLjGFQY+eDGHqjIetO
8MmAtSPlmu9xwO3T9OAhnRFI/zMYXHoT1PP7fGfQr8Ok0CpPlfIVZBGzy/9G8PeR
wgEYSIEcHpD6KphOG0FcUsA2aJdQf9pFe+OPBnNJpj8s7d6nsNhcYqoxQS4R7auz
2jJkh7khSwuY9EK8+mTLxnx9KUK3E39sTpgFbaixuujUEMnH5hVe1WpH38SC1ufZ
tGmXA19wZ9xzH02TA5tymx4dViDWMAQBNjoQ7uyqqLWM20oELE0MLbORyIqrUORP
wf6A+45xNxoVfQieqr8JJMjj0uPeCjKD1kLfPw6xerAI1+xXU7RRGcnaca1UoTVa
BmKrmReuC+7vpPJ6kZgR0m+LsaIyDF+b4/glgSJH28KoZwv6ZePxvd1tNZsdgYon
P5lBwLAMXvXvIrEkyx7MAz211EXM0AfJ4Vlt+How9vJt0g6y7cOETsP8hcguYTSb
KNUiCTL2/+lGMnPYPsWpRFRYYtWMI2gFs97/HO+Ay2MdH3NjQS0CkZ9sNphlixMV
5dhVidswOwP1lQomps0PZkE2ZW38WedHXuGtQSl3imYhJbWLkoo8PINBt2vwh6cm
YP+/eFIk4D/hvPFESjvA
=R0It
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----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=nuWw
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJbkngmAAoJEEtpOizt6ddyeaoH/15bbGHlwWf23tGjSoDzhyD4
zAXfy+SJdm4cR8K7jEkVrNffkEMAby7Zl28hTHKB9jsY1K8DD+EuCE3Nd4kkVAsc
iHJwV4aiHil/zC5SyE0MqMzELeS8UhsxESYebG6yNF0ElQDQ0SG+QAFr47/OBN9S
u4I7x0rhyJP6Kg8z9U4KtEX0hM6C7VVunGWu44/xZSAecTaMuJnItCIM4UMdEkSs
xpAoI59lwM6BWrXLvEunekAkxEXoR7AVpQER2PDINoLK2I0i0oavhPim9Xdt2ZXs
rqQqfmwmPOVvYbexDp97JtfWo3/psGLqvgoK1tq9bzF3u6Y3ylnUK5IspyVYwuQ=
=TK8A
-----END PGP SIGNATURE-----
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>
__tipc_nl_compat_dumpit() uses a netlink_callback on stack,
so the only way to align it with other ->dumpit() call path
is calling tipc_dump_start() and tipc_dump_done() directly
inside it. Otherwise ->dumpit() would always get NULL from
cb->args[].
But tipc_dump_start() uses sock_net(cb->skb->sk) to retrieve
net pointer, the cb->skb here doesn't set skb->sk, the net pointer
is saved in msg->net instead, so introduce a helper function
__tipc_dump_start() to pass in msg->net.
Ying pointed out cb->args[0...3] are already used by other
callbacks on this call path, so we can't use cb->args[0] any
more, use cb->args[4] instead.
Fixes: 9a07efa9ae ("tipc: switch to rhashtable iterator")
Reported-and-tested-by: syzbot+e93a2c41f91b8e2c7d9b@syzkaller.appspotmail.com
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-----BEGIN PGP SIGNATURE-----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=722Y
-----END PGP SIGNATURE-----
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."
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJbkCCZAAoJEPpiX2QO6xPKmhgIAIX+VmEMS+dP6YOP9ghTbBrI
rNa6iAss17EvxQ3DXxS3dPEQHFiyIGfnZo1Kc/BCIs00qUUU10DlsszQkDurnfAp
18w8aDH6CRZmDeq6CA4g0K1DjkHJYhnPutrLUHpnZwZE1W6avAXjo4kM5pXKehza
IPKQK063DacNOcjN1hhzLoPM7FJTBof4X62bv8lGuhv44N8ei1v3bTqii2YQrakg
h6PdF4uGpjrXeGs+1VFD5gGbYFWkNwTVVkFZg2yKF91axPZrtSAo/CroEiKDsrfM
iPMRll5Hm5fgOJM3wCd2NUp/10NXO/BX9h+87w988lsDeExwqVJel/OdX9B3n1c=
=xY7e
-----END PGP SIGNATURE-----
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.
-----BEGIN PGP SIGNATURE-----
iIsEABYIADMWIQRgLjeFAZEXQzy86/s+p5+stXUA3QUCW5GjkhUccGF1bC5idXJ0
b25AbWlwcy5jb20ACgkQPqefrLV1AN3LmgEA3bCpFJNpj6Ep4ffwHx6bLOgHzr3T
1CPx6UWPktIBZIgBAMmOWzCC5U/fqp3974lwohEG0orAzOfpuLn6uX9X0m4O
=TEC0
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----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=WRXo
-----END PGP SIGNATURE-----
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
Bump target version to reflect the documented fixes are available.
Also fix some code comments (typos and clarity).
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
On fast devices such as NVMe, a flaw in rs_get_progress() results in
false target status output when userspace lvm2 requests leg rebuilds
(symptom of the failure is device health chars 'aaaaaaaa' instead of
expected 'aAaAAAAA' causing lvm2 to fail).
The correct sync action state definitions already exist in
decipher_sync_action() so fix rs_get_progress() to use it.
Change decipher_sync_action() to return an enum rather than a string for
the sync states and call it from rs_get_progress(). Introduce
sync_str() to translate from enum to the string that is needed by
raid_status().
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Update superblock when particular devices are requested via rebuild
(e.g. lvconvert --replace ...) to avoid spurious failure with the "New
device injected into existing raid set without 'delta_disks' or
'rebuild' parameter specified" error message.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
When initiating a stripe adding reshape, a deadlock between
md_stop_writes() waiting for the sync thread to stop and the running
sync thread waiting for inactive stripes occurs (this frequently happens
on single-core but rarely on multi-core systems).
Fix this deadlock by setting MD_RECOVERY_WAIT to have the main MD
resynchronization thread worker (md_do_sync()) bail out when initiating
the reshape via constructor arguments.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAluRkywQHGF4Ym9lQGtl
cm5lbC5kawAKCRD301j7KXHgpm8uEAC8vBFb5tzZ2dOeRbGQ6LaPTToBmRrLtOcP
kDRnfZIw0raNStOpn1dkGLz8IOSjwOGftx9Q4pJed25vynTEq5lYmmLVUlJQ6cJ7
oNpYiCdPxJvbKz5fChGG2nHHa1RLer1d728NZtkeZU/ChPmw56EO5ORghE7zPG7K
Z/0qHYsgwS427o8pUDsymmt6I62IJGrjzqJdC0pqBy6RePQWtlwkmtd7CIgFiffY
tDnk6RSwcihnIalMMLvFXeGf6cSaZvuH4oK1QNdfojAyS8kWeA6gHtjRS8UcuuUY
t6o+hU0vki8bghoNoI40RrLgAmV91BVv1/Voo79dQvDWAigyie51HwFFkqdWzJxJ
g4MCZYpys26w/VUGBFCku0hiRIAhZFO8Sun5zbVCJpyt8hTXF0RrG3CpwmCF7Lc0
m+h8tJanEMCesfYMztTD31L1BOFhJeOgBJr4a5QURy0LbIvC0V52IKiOQ0475E8E
H10rQaRw/7Am+mZugedMUGMgYD/eN33NQoRuTWZdck/58big2SU78zGpR/GqTmy3
w9v2I8ksBTivzEayBV0G4Z5Gxu7QYA7NMsO5RS/wuGfUX8D/1QtQU9Ejh5TESbek
R3WUyhXJJ2S+DWTUlmX7TgPxYxG3sXatQbSAgFJiucxyIRdpdqfeoXmOHvPrWZEq
O3VDm0D6pw==
=qhv7
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20180906' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Small collection of fixes that should go into this release. This
contains:
- Small series that fixes a race between blkcg teardown and writeback
(Dennis Zhou)
- Fix disallowing invalid block size settings from the nbd ioctl (me)
- BFQ fix for a use-after-free on last release of a bfqg (Konstantin
Khlebnikov)
- Fix for the "don't warn for flush" fix (Mikulas)"
* tag 'for-linus-20180906' of git://git.kernel.dk/linux-block:
block: bfq: swap puts in bfqg_and_blkg_put
block: don't warn when doing fsync on read-only devices
nbd: don't allow invalid blocksize settings
blkcg: use tryget logic when associating a blkg with a bio
blkcg: delay blkg destruction until after writeback has finished
Revert "blk-throttle: fix race between blkcg_bio_issue_check() and cgroup_rmdir()"
If a HPD pulse signalling the need to retrain the link occurs between
the KMS driver releasing the output and the supervisor interrupt that
finishes the teardown, it was possible get a NULL-ptr deref.
Avoid this by marking the link as inactive earlier.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This Falcon application doesn't appear to be present on some newer
systems, so let's not fail init if we can't find it.
TBD: is there a way to determine whether it *should* be there?
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The NV_ERROR macro requires drm->client to be initialised, which it may not
be at this stage of the init process.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
It looks like that when we moved over to using
drm_connector_for_each_possible_encoder() in nouveau, that one rather
important part of this function got dropped by accident:
/* Right v here */
for (i = 0; nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER; i++) {
int id = connector->encoder_ids[i];
if (id == 0)
break;
Since it's rather difficult to notice: the conditional in this loop is
actually:
nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER
Meaning that all early breaks result in nv_encoder keeping it's value,
otherwise nv_encoder = NULL. Ugh.
Since this got dropped, nouveau_connector_ddc_detect() now returns an
encoder for every single connector, regardless of whether or not it's
detected:
[ 1780.056185] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DP-2
So: fix this to ensure we only return an encoder if we actually found
one, and clean up the rest of the function while we're at it since it's
nearly impossible to read properly.
Changes since v1:
- Don't skip ddc probing for LVDS if we can't switch DDC through
vga-switcheroo, just do the DDC probing without calling
vga_switcheroo_lock_ddc() - skeggsb
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: ddba766dd0 ("drm/nouveau: Use drm_connector_for_each_possible_encoder()")
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Currently, there's nothing in nouveau that actually cancels this work
struct. So, cancel it on suspend/unload. Otherwise, if we're unlucky
enough hpd_work might try to keep running up until the system is
suspended.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
On most systems with ACPI hotplugging support, it seems that we always
receive a hotplug event once we re-enable EC interrupts even if the GPU
hasn't even been resumed yet.
This can cause problems since even though we schedule hpd_work to handle
connector reprobing for us, hpd_work synchronizes on
pm_runtime_get_sync() to wait until the device is ready to perform
reprobing. Since runtime suspend/resume callbacks are disabled before
the PM core calls ->suspend(), any calls to pm_runtime_get_sync() during
this period will grab a runtime PM ref and return immediately with
-EACCES. Because we schedule hpd_work from our ACPI HPD handler, and
hpd_work synchronizes on pm_runtime_get_sync(), this causes us to launch
a connector reprobe immediately even if the GPU isn't actually resumed
just yet. This causes various warnings in dmesg and occasionally, also
prevents some displays connected to the dedicated GPU from coming back
up after suspend. Example:
usb 1-4: USB disconnect, device number 14
usb 1-4.1: USB disconnect, device number 15
WARNING: CPU: 0 PID: 838 at drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h:170 nouveau_dp_detect+0x17e/0x370 [nouveau]
CPU: 0 PID: 838 Comm: kworker/0:6 Not tainted 4.17.14-201.Lyude.bz1477182.V3.fc28.x86_64 #1
Hardware name: LENOVO 20EQS64N00/20EQS64N00, BIOS N1EET77W (1.50 ) 03/28/2018
Workqueue: events nouveau_display_hpd_work [nouveau]
RIP: 0010:nouveau_dp_detect+0x17e/0x370 [nouveau]
RSP: 0018:ffffa15143933cf0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8cb4f656c400 RCX: 0000000000000000
RDX: ffffa1514500e4e4 RSI: ffffa1514500e4e4 RDI: 0000000001009002
RBP: ffff8cb4f4a8a800 R08: ffffa15143933cfd R09: ffffa15143933cfc
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8cb4fb57a000
R13: ffff8cb4fb57a000 R14: ffff8cb4f4a8f800 R15: ffff8cb4f656c418
FS: 0000000000000000(0000) GS:ffff8cb51f400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78ec938000 CR3: 000000073720a003 CR4: 00000000003606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
? _cond_resched+0x15/0x30
nouveau_connector_detect+0x2ce/0x520 [nouveau]
? _cond_resched+0x15/0x30
? ww_mutex_lock+0x12/0x40
drm_helper_probe_detect_ctx+0x8b/0xe0 [drm_kms_helper]
drm_helper_hpd_irq_event+0xa8/0x120 [drm_kms_helper]
nouveau_display_hpd_work+0x2a/0x60 [nouveau]
process_one_work+0x187/0x340
worker_thread+0x2e/0x380
? pwq_unbound_release_workfn+0xd0/0xd0
kthread+0x112/0x130
? kthread_create_worker_on_cpu+0x70/0x70
ret_from_fork+0x35/0x40
Code: 4c 8d 44 24 0d b9 00 05 00 00 48 89 ef ba 09 00 00 00 be 01 00 00 00 e8 e1 09 f8 ff 85 c0 0f 85 b2 01 00 00 80 7c 24 0c 03 74 02 <0f> 0b 48 89 ef e8 b8 07 f8 ff f6 05 51 1b c8 ff 02 0f 84 72 ff
---[ end trace 55d811b38fc8e71a ]---
So, to fix this we attempt to grab a runtime PM reference in the ACPI
handler itself asynchronously. If the GPU is already awake (it will have
normal hotplugging at this point) or runtime PM callbacks are currently
disabled on the device, we drop our reference without updating the
autosuspend delay. We only schedule connector reprobes when we
successfully managed to queue up a resume request with our asynchronous
PM ref.
This also has the added benefit of preventing redundant connector
reprobes from ACPI while the GPU is runtime resumed!
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Cc: Karol Herbst <kherbst@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1477182#c41
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
