[GIT PULL] KVM/arm64 fixes for 6.8, take #3

[GIT PULL] KVM/arm64 fixes for 6.8, take #3

[Marc Zyngier]

Hey Paolo,

Another week, another couple of fixes. This time, two fixes for the
ITS emulation that could result in non-existent LPIs being used, with
unpredictable consequences. Thanks to Oliver for spotting those as he
was reworking the ITS translation cache.

Please pull,

	M.

The following changes since commit c60d847be7b8e69e419e02a2b3d19c2842a3c35d:

  KVM: arm64: Fix double-free following kvm_pgtable_stage2_free_unlinked() (2024-02-13 19:22:03 +0000)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.8-3

for you to fetch changes up to 85a71ee9a0700f6c18862ef3b0011ed9dad99aca:

  KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler (2024-02-21 10:06:41 +0000)

----------------------------------------------------------------
KVM/arm64 fixes for 6.8, take #3

- Check for the validity of interrupts handled by a MOVALL
  command

- Check for the validity of interrupts while reading the
  pending state on enabling LPIs.

----------------------------------------------------------------
Oliver Upton (2):
      KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
      KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler

 arch/arm64/kvm/vgic/vgic-its.c | 5 +++++
 1 file changed, 5 insertions(+)

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Re: [GIT PULL] KVM/arm64 fixes for 6.8, take #3

[Paolo Bonzini]

On Wed, Feb 21, 2024 at 11:17 AM Marc Zyngier <maz@kernel.org> wrote:
>
> Hey Paolo,
>
> Another week, another couple of fixes. This time, two fixes for the
> ITS emulation that could result in non-existent LPIs being used, with
> unpredictable consequences. Thanks to Oliver for spotting those as he
> was reworking the ITS translation cache.

The consequences would really be NULL pointer dereferences, wouldn't they?

Pulled, thanks (not pushed so that I can adjust the merge commit message).

Paolo


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Re: [GIT PULL] KVM/arm64 fixes for 6.8, take #3

[Marc Zyngier]

On Wed, 21 Feb 2024 10:22:04 +0000,
Paolo Bonzini <pbonzini@redhat.com> wrote:
> 
> On Wed, Feb 21, 2024 at 11:17 AM Marc Zyngier <maz@kernel.org> wrote:
> >
> > Hey Paolo,
> >
> > Another week, another couple of fixes. This time, two fixes for the
> > ITS emulation that could result in non-existent LPIs being used, with
> > unpredictable consequences. Thanks to Oliver for spotting those as he
> > was reworking the ITS translation cache.
> 
> The consequences would really be NULL pointer dereferences, wouldn't they?

That's the effect. The consequences depend on how the fault is
handled ('benign' oops, panic, or reboot...).

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.

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