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| author | Sebastian Ott <sebott@redhat.com> | 2025-05-05 20:31:48 +0300 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2025-05-05 22:12:27 +0300 |
| commit | 157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c (patch) | |
| tree | eec83e760417c9711a719ac8fa42a7e3924746be /rust/helpers/helpers.c | |
| parent | b4432656b36e5cc1d50a1f2dc15357543add530e (diff) | |
| download | linux-157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c.tar.xz | |
KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the
initialization of the local memcache variable in user_mem_abort()
conditional, leaving a codepath where it is used uninitialized via
kvm_pgtable_stage2_map().
This can fail on any path that requires a stage-2 allocation
without transition via a permission fault or dirty logging.
Fix this by making sure that memcache is always valid.
Fixes: fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM")
Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/kvmarm/3f5db4c7-ccce-fb95-595c-692fa7aad227@redhat.com/
Link: https://lore.kernel.org/r/20250505173148.33900-1-sebott@redhat.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions